CN102610884A - Low temperature co-fired ceramic ultra-wideband micro filter - Google Patents
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Abstract
The invention relates to a low-temperature co-fired ceramic ultra-wideband micro filter, comprising input and output interfaces suitable for pasting on a surface; input and output inductors; nine parallel resonance units implemented by three-layer folded coupling strip line and comb type coupled resonance structures; and eight groups of enhanced coupling diaphragms with resonance levels which are directly connected with each other, the structures are implemented by multi-layer low-temperature co-fired ceramic technology. According to the invention, the low-temperature co-fired ceramic ultra-wideband micro filter has the advantages of wide frequency coverage, low insertion loss, good controllability, small volume, light weight, high reliability, good electrical property, good phase frequency characteristic linearity, good temperature stability, low cost and mass production, and is particularly applied to fields of millimeter wave communication, microwave navigation, guidance, telemetry, remote control, satellite communication and military confrontation, and corresponding frequency range systems having excessive demand on volume, weight, electrical property and reliability.
Description
Technical field
The present invention relates to a kind of filter, particularly a kind of LTCC ultra broadband microfilter.
Background technology
In systems such as microwave and millimeter wave communication, radar; Especially in ambulatory handheld formula wireless communication terminal, individual soldier's satellite mobile communication terminal, military and civilian multimode multiplex communication terminal, airborne, missile-borne, the aerospace communication system; Band pass filter is the crucial electronic unit in corresponding wave band reception and the transmitting branch; And the ultra broadband microfilter is an one of which important developing direction; Have characteristics such as high transfer rate, low power consumption and strong anti-interference ability, become one of key component in the wireless communication system.The key technical indexes of describing this component capabilities has: passband operating frequency range, stop-band frequency scope, passband input/output voltage standing-wave ratio, passband insert loss, stopband attenuation, form factor, insertion phase shift and delay/frequency characteristic, temperature stability, volume, weight, reliability etc.Developing rapidly of mobile communication proposed increasingly high requirement to the electrical property of microwave device and miniaturization, easy of integration, stability etc.In order in device miniaturization, to reduce its loss, obtain higher quality factor, just need seek new material and technology.With the filter of conventional method design, all there is volume and inserts the bigger shortcoming of loss like hair clip type filter construction, resonant cavity filter structure and coaxial line filter structure etc., and for requiring harsh application scenario often can't use.
Summary of the invention
The object of the present invention is to provide that a kind of volume is little, in light weight, controllability is high, reliability is high, electrical property is excellent, simple in structure, rate of finished products is high, in batches high conformity, cost is low, temperature performance is stable, the ultra broadband low-loss minisize band-pass filter of phase-frequency characteristic linear change.
The technical scheme that realizes the object of the invention is: a kind of LTCC ultra broadband microfilter; It is characterized in that comprising between surface-pasted 50 ohmage input ports, first order parallel resonance unit, the first order between coupling circuit, parallel resonance unit, the second level, the second level between coupling circuit, third level parallel resonance unit, the third level between coupling circuit, fourth stage parallel resonance unit, the fourth stage coupling circuit between coupling circuit, level V parallel resonance unit, level V, the 6th grade of parallel resonance unit, the 6th interstage coupling circuit, the 7th grade of parallel resonance unit, the 7th interstage coupling circuit, the 8th grade of parallel resonance unit, the 8th interstage coupling circuit, the 9th grade of parallel resonance unit, outputting inductance, surface-pasted 50 ohmage output port and earth terminals; One termination input signal of input port; One end of another termination input inductance of input port; One end of outputting inductance one termination output port; The other end of output port is exported signal; The other end of input port and the other end of output port parallel connection first order parallel resonance unit, parallel resonance unit, the second level, third level parallel resonance unit, fourth stage parallel resonance unit, level V parallel resonance unit, the 6th grade of parallel resonance unit, the 7th grade of parallel resonance unit, the 8th grade of parallel resonance unit, the 9th grade of parallel resonance unit; Coupling circuit between the series connection first order between first order parallel resonance unit and the parallel resonance unit, the second level; Coupling circuit between the series connection second level between parallel resonance unit, the second level and the third level parallel resonance unit; Coupling circuit between the series connection third level between third level parallel resonance unit and the fourth stage parallel resonance unit; Coupling circuit between the series connection fourth stage between fourth stage parallel resonance unit and the level V parallel resonance unit; Coupling circuit between the series connection level V between level V parallel resonance unit and the 6th grade of parallel resonance unit; Series connection the 6th interstage coupling circuit between the 6th grade of parallel resonance unit and the 7th grade of parallel resonance unit; Series connection the 7th interstage coupling circuit between the 7th grade of parallel resonance unit and the 8th grade of parallel resonance unit, series connection the 8th interstage coupling circuit between the 8th grade of parallel resonance unit and the 9th grade of parallel resonance unit.
Compared with prior art, because the present invention adopts low-loss low-temperature co-burning ceramic material and 3 D stereo integrated, the remarkable advantage that is brought is: (1) passband internal loss is low, the outer height that suppresses of band; (2) ultra work broadband; (3) volume is little, in light weight, reliability is high, cost is low; (4) electrical property is excellent, the phase-frequency characteristic linear change; (5) temperature stability is high, and heat conductivity is good, satisfies big electric current and high-temperature stability requirement; (7) the disposable sinter molding of manufacture craft, it is high to print precision, and multilager base plate green band can progressively be checked, helps the raising of production efficiency; (9) easy to install and use, can use full-automatic chip mounter to install and welding; (10) be specially adapted to millimetre-wave attenuator, microwave-navigation, guidance, remote measuring and controlling, satellite communication and military confrontation field, and volume, weight, electrical property and reliability etc. are had in the harsh corresponding band system that requires.
Description of drawings
Fig. 1 is the electrical schematic diagram of LTCC ultra broadband microfilter of the present invention.
Fig. 2 is the profile and the internal structure sketch map of LTCC ultra broadband microfilter of the present invention.
Fig. 3 is the parallel resonance cellular construction sketch map of LTCC ultra broadband microfilter of the present invention.
Fig. 4 is the line model that is of coupled connections between the resonance level of LTCC ultra broadband microfilter of the present invention.
Fig. 5 is the three-dimensional all-wave simulation performance of a LTCC ultra broadband microfilter of the present invention curve.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
In conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4; The present invention is a kind of LTCC ultra broadband microfilter, and this filter comprises between surface-pasted 50 ohmage input port P1, input inductance L10, first order parallel resonance unit L1, C1, the first order between coupling circuit L12, C12, parallel resonance unit, second level L2, C2, the second level between coupling circuit L23, C23, third level parallel resonance unit L3, C3, the third level between coupling circuit L34, C34, fourth stage parallel resonance unit L4, C4, the fourth stage 50 ohmage output port P2 and earth terminals of coupling circuit L56 between coupling circuit L45, C45, level V parallel resonance unit L5, C5, level V, C56, the 6th grade of parallel resonance unit L6, C6, the 6th interstage coupling circuit L67, C67, the 7th grade of parallel resonance unit L7, C7, the 7th interstage coupling circuit L78, C78, the 8th grade of parallel resonance unit L8, C8, the 8th interstage coupling circuit L89, C89, the 9th grade of parallel resonance unit L9, C9, outputting inductance L11, mounted on surface; 50 ohmage input port P1, the one termination input signal of mounted on surface; The end of another termination input inductance L10; The other end of input inductance L10 respectively with the end of first order parallel resonance unit L1, C1 and the first order between the end of coupling circuit L12, C12 be connected; Wherein first order parallel resonance unit L1, C1 are formed in parallel by first inductance L 1 and first capacitor C 1, and coupling circuit is in series by the first coupling inductance L12 and the first coupling capacitance C12 between the first order; Between the first order between the end of the other end of coupling circuit L12, C12 and parallel resonance unit, second level L2, C2 and the second level end of coupling circuit L23, C23 link to each other; Wherein second level parallel resonance unit L2, C2 are formed in parallel by first inductance L 2 and first capacitor C 2, and coupling circuit L23, C23 are in series by the first coupling inductance L23 and the second coupling capacitance C23 between the second level; Between the second level between the end of coupling circuit L23, the C23 other end and third level parallel resonance unit L3, C3 and the third level end of coupling circuit L34, C34 link to each other; Wherein third level parallel resonance unit L3, C3 are formed in parallel by the 3rd inductance L 3 and the 3rd capacitor C 3, and coupling circuit L34, C34 are in series by the 3rd coupling inductance L34 and the 3rd coupling capacitance C34 between the third level; Between the third level between the end of the other end of coupling circuit L34, C34 and fourth stage parallel resonance unit L4, C4 and the fourth stage end of coupling circuit L45, C45 link to each other; Wherein fourth stage parallel resonance unit L4, C4 are formed in parallel by the 4th inductance L 4 and the 4th capacitor C 4, and coupling circuit L45, C45 are in series by the 4th coupling inductance L45 and the 4th coupling capacitance C45 between the fourth stage; Between the fourth stage between the end of the other end of coupling circuit L45, C45 and level V parallel resonance unit L5, C5 and level V the end of coupling circuit L56, C56 link to each other; Wherein level V parallel resonance unit L5, C5 are formed in parallel by the 5th inductance L 5 and the 5th capacitor C 5, and coupling circuit L56, C56 are in series by the 5th coupling inductance L56 and the 5th coupling capacitance C56 between level V; The end of the other end of coupling circuit L56, C56 and the 6th grade of parallel resonance unit L6, C6 links to each other with the end of the 6th interstage coupling circuit L67, C67 between level V; Wherein the 6th grade of parallel resonance unit L6, C6 are formed in parallel by the 6th inductance L 6 and the 6th capacitor C 6, and the 6th interstage coupling circuit L67, C67 are in series by the 6th coupling inductance L67 and the 6th coupling capacitance C67; The end of the other end of the 6th interstage coupling circuit L67, C67 and the 7th grade of parallel resonance unit L7, C7 links to each other with the end of the 7th interstage coupling circuit L78, C78; Wherein the 7th grade of parallel resonance unit L7, C7 are formed in parallel by the 7th inductance L 7 and the 7th capacitor C 7, and the 7th interstage coupling circuit L78, C78 are in series by the 7th coupling inductance L78 and the 7th coupling capacitance C78; The end of the other end of the 7th interstage coupling circuit L78, C78 and the 8th grade of parallel resonance unit L8, C8 links to each other with the end of the 8th interstage coupling circuit L89, C89; Wherein the 8th grade of parallel resonance unit L8, C8 are formed in parallel by the 8th inductance L 8 and the 8th capacitor C 8, and the 8th interstage coupling circuit L89, C89 are in series by the 8th coupling inductance L89 and the 8th coupling capacitance C89; The other end of the 8th interstage coupling circuit L89, C89 links to each other with the end of outputting inductance L11 with the end of the 9th antiresonant circuit L9, C9 respectively; The end of the other end of outputting inductance L11 and output port P2, the other end of output port P2 is exported signal; The other end of said first order parallel resonance unit L1, C1, parallel resonance unit, second level L2, C2, third level parallel resonance unit L3, C3, fourth stage parallel resonance unit L4, C4, level V parallel resonance unit L5, C5, the 6th grade of parallel resonance unit L6, C6, the 7th grade of parallel resonance unit L7, C7, the 8th grade of parallel resonance unit L8, C8, the 9th grade of parallel resonance unit L9, C9 is ground connection respectively.
In conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4; The present invention is a kind of LTCC ultra broadband microfilter; Coupling circuit L45, C45, the 5th parallel resonance unit L5, C5 between coupling circuit L34, C34, fourth stage parallel resonance unit L4, C4, the fourth stage between coupling circuit L23, C23, third level parallel resonance unit L3, C3, the third level between coupling circuit L12, C12, parallel resonance unit, second level L2, C2, the second level between input port P1, input inductance L10, first order parallel resonance unit L1, C1, the first order; Coupling circuit L56, C56, the 6th parallel resonance unit L6, C6 between level V; The 6th interstage coupling circuit L67, C67, the 7th parallel resonance unit L7, C7; The 7th interstage coupling circuit L78, C78, the 8th parallel resonance unit L8, C8; The 8th interstage coupling circuit L89, C89, the 9th parallel resonance unit L9, C9; Outputting inductance L11; Output port P2 and earth terminal all adopt multilayer LTCC technology to realize; Wherein input inductance L10, outputting inductance L11 all adopt the strip line of distributed constant to realize; First order parallel resonance unit L1, C1, parallel resonance unit, second level L2, C2, third level parallel resonance unit L3, C3, fourth stage parallel resonance unit L4, C4, level V parallel resonance unit L5, C5, the 6th grade of parallel resonance unit L6, C6, the 7th grade of parallel resonance unit L7, C7, the 8th grade of parallel resonance unit L8, C8, the 9th grade of parallel resonance unit L9, C9 all adopt three layers of folding coupling strip line of distributed constant to realize that wherein every layer of strip line one end is unsettled, other end ground connection..
In conjunction with Fig. 2, Fig. 3 and Fig. 4; The present invention is a kind of LTCC ultra broadband microfilter; Between the first order between coupling circuit L12, C12, the second level between coupling circuit L23, C23, the third level between coupling circuit L34, C34, the fourth stage between coupling circuit L45, C45, level V coupling circuit L56, C56, the 6th interstage coupling circuit L67, C67, the 7th interstage coupling circuit L78, C78, the 8th interstage coupling circuit L89, C89 all introduced direct coupling, directly strengthen coupling transverse slat S12 between first order parallel resonance unit L1, C1 and parallel resonance unit, second level L2, the C2 and link to each other with first; Directly strengthening coupling transverse slat S23 with second between parallel resonance unit, second level L2, C2 and third level parallel resonance unit L3, the C3 links to each other; Directly strengthening coupling transverse slat S34 with the 3rd between third level parallel resonance unit L3, C3 and fourth stage parallel resonance unit L4, the C4 links to each other; Directly strengthening coupling transverse slat S45 with the 4th between fourth stage parallel resonance unit L4, C4 and level V parallel resonance unit L5, the C5 links to each other; Directly strengthening coupling transverse slat S56 with the 5th between level V parallel resonance unit L5, C5 and the 6th grade of parallel resonance unit L6, the C6 links to each other; Directly strengthening coupling transverse slat S67 with the 6th between the 6th grade of parallel resonance unit L6, C6 and the 7th grade of parallel resonance unit L7, the C7 links to each other; Directly strengthening coupling transverse slat S78 with the 7th between the 7th grade of parallel resonance unit L7, C7 and the 8th grade of parallel resonance unit L8, the C8 links to each other; Directly strengthening coupling transverse slat S89 with the 8th between the 8th grade of parallel resonance unit L8, C8 and the 9th grade of parallel resonance unit L9, the C9 links to each other; First strengthens coupling transverse slat S12, second strengthens coupling transverse slat S23, the 3rd and strengthens coupling transverse slat S34, the 4th and strengthen coupling transverse slat S45, the 5th and strengthen coupling transverse slat S56, the 6th and strengthen coupling transverse slat S67, the 7th and strengthen coupling transverse slat S78 and the 8th to strengthen coupling transverse slat S89 all are segment strip lines, all adopts multilayer LTCC technology to realize; Said first order parallel resonance unit L1, C1, parallel resonance unit, second level L2, C2, third level parallel resonance unit L3, C3, fourth stage parallel resonance unit L4, C4, level V parallel resonance unit L5, C5, the 6th grade of parallel resonance unit L6, C6, the 7th grade of parallel resonance unit L7, C7, the 8th grade of parallel resonance unit L8, C8, the 9th grade of parallel resonance unit L9, C9 distinguish ground connection.
A kind of LTCC ultra broadband of the present invention microfilter; Its operation principle is summarized as follows: a kind of LTCC ultra broadband microfilter is to adopt pectination type coupled resonators structure to realize; For realizing ultra broadband, must strengthen the stiffness of coupling between the resonance level, increase resonance level intensity on the one hand through increasing resonance level progression; Totally 9 grades, on the other hand through between resonance level, directly linking to each other with strengthening the coupling transverse slat.The broadband microwave signal of input arrives first order parallel resonance unit L1, C1 through input port P1 through input inductance L10; In the described broadband microwave signal; Get between first order parallel resonance unit L1, C1 and parallel resonance unit, second level L2, the C2 coupling circuit L12, C12 between the first order near the microwave signal the first order parallel resonance unit resonance frequency; Near all the other non-first order parallel resonance unit resonance frequencies microwave signal realizes first order filtering through first inductance L 1 and first capacitor C, 1 ground connection among first order parallel resonance unit L1, the C1; Behind coupling circuit L12, C12 between the first order filtering and the first order; Get into coupling circuit L23, C23 between the second level near the microwave signal parallel resonance unit, second level L2, the C2 resonance frequency; Near all the other non-second level parallel resonance unit resonance frequencies microwave signal realizes second level filtering through second inductance L 2 and second capacitor C, 2 ground connection among parallel resonance unit, second level L2, the C2; Behind coupling circuit L23, C23 between the second level filtering and the second level; Get into coupling circuit L34, C34 between the third level near the microwave signal third level parallel resonance unit L3, the C3 resonance frequency; Near all the other non-third level parallel resonance unit resonance frequencies microwave signal realizes third level filtering through the 3rd inductance L 3 and the 3rd capacitor C 3 ground connection among third level parallel resonance unit L3, the C3; Behind coupling circuit L34, C34 between the third level filtering and the third level; Get into coupling circuit L45, C45 between the fourth stage near the microwave signal fourth stage parallel resonance unit L4, the C4 resonance frequency; Near all the other non-fourth stage parallel resonance unit resonance frequencies microwave signal realizes fourth stage filtering through the 4th inductance L 4 and the 4th capacitor C 4 ground connection among fourth stage parallel resonance unit L4, the C4; Behind coupling circuit L45, C45 between the fourth stage filtering and the fourth stage; Get into coupling circuit L56, C56 between level V near the microwave signal level V parallel resonance unit L5, the C5 resonance frequency; Near all the other non-level V parallel resonance unit resonance frequencies microwave signal realizes level V filtering through the 5th inductance L 5 and the 5th capacitor C 5 ground connection among level V parallel resonance unit L5, the C5; Behind coupling circuit L56, C56 between level V filtering and level V; Near the 6th grade of parallel resonance unit L6, C6 resonance frequency microwave signal gets into the 6th interstage coupling circuit L67, C67; Near all the other non-the 6th grade of parallel resonance unit resonance frequencies microwave signal realizes the 6th grade of filtering through the 6th inductance L 6 and the 6th capacitor C 6 ground connection among the 6th grade of parallel resonance unit L6, the C6; Behind the 6th grade of filtering and the 6th interstage coupling circuit L67, C67; Near the 7th grade of parallel resonance unit L7, C7 resonance frequency microwave signal gets into the 7th interstage coupling circuit L78, C78; Near all the other non-the 7th grade of parallel resonance unit resonance frequencies microwave signal realizes the 7th grade of filtering through the 7th inductance L 7 and the 7th capacitor C 7 ground connection among the 7th grade of parallel resonance unit L7, the C7; Behind the 7th grade of filtering and the 7th interstage coupling circuit L78, C78; Near the 8th grade of parallel resonance unit L8, C8 resonance frequency microwave signal gets into the 8th interstage coupling circuit L89, C89; Near all the other non-the 8th grade of parallel resonance unit resonance frequencies microwave signal realizes the 8th grade of filtering through the 8th inductance L 8 and the 8th capacitor C 8 ground connection among the 8th grade of parallel resonance unit L8, the C8; Behind the 8th grade of filtering and the 8th interstage coupling circuit L89, C89; Near the 9th grade of parallel resonance unit L9, C9 resonance frequency microwave signal process outputting inductance L11 is to output port P2; Near all the other non-the 9th grade of parallel resonance unit resonance frequencies microwave signal realizes the 9th grade of filtering through the 9th inductance L 9 and the 9th capacitor C 9 ground connection among the 9th grade of parallel resonance unit L9, the C9; Microwave signal through first order filtering, second level filtering, third level filtering, fourth stage filtering, level V filtering, the 6th grade of filtering, the 7th grade of filtering, the 8th grade of filtering, the 9th grade of filtering is exported through the end of surface-pasted 50 ohmage output port P2 by outputting inductance, thereby realizes the miniature filter function of ultra broadband.
LTCC ultra broadband microfilter is owing to be to adopt multilayer LTCC technology to realize; Its low-temperature co-burning ceramic material and metallic pattern form at about 900 ℃ of sintering temperatures; So have extreme high reliability and temperature stability; 3 D stereo is integrated to be grounded and to encapsulate with multilayer folding structure and outer surface metallic shield because structure adopts, thereby volume is significantly reduced.
It is 3.2mm*2.0mm*1.2mm that LTCC ultra broadband microfilter is implemented volume.This filter center frequency is 6500MHz, and bandwidth is 7000MHz, and relative bandwidth surpasses 100%, and the logical in-band insertion loss of simulation filter device is all less than 2 decibels, and low stopband suppresses to be superior to-30 decibels, and high stopband suppresses to be superior to-25 decibels, has good performance of filter.
Claims (5)
1. LTCC ultra broadband microfilter is characterized in that: comprise surface-pasted 50 ohmage input ports (P1), input inductance (L10), first order parallel resonance unit (L1, C1), coupling circuit (L12 between the first order; C12), parallel resonance unit, the second level (L2, C2), coupling circuit between the second level (L23, C23), third level parallel resonance unit (L3; C3), coupling circuit between the third level (L34, C34), fourth stage parallel resonance unit (L4, C4), coupling circuit (L45 between the fourth stage; C45), level V parallel resonance unit (L5; C5), coupling circuit between level V (L56, C56), the 6th grade of parallel resonance unit (L6, C6), the 6th interstage coupling circuit (L67; C67), the 7th grade of parallel resonance unit (L7; C7), the 7th interstage coupling circuit (L78, C78), the 8th grade of parallel resonance unit (L8, C8), the 8th interstage coupling circuit (L89; C89), the 9th grade of parallel resonance unit (L9, C9), outputting inductance (L11), surface-pasted 50 ohmage input port (P2) and earth terminals; One termination input signal of surface-pasted 50 ohmage input ports (P1), an end of another termination input inductance (L10) of input port (P1), an end of the surface-pasted 50 ohmage output ports (P2) of a termination of outputting inductance (L11), the other end of surface-pasted 50 ohmage output ports is exported signal; The other end of the other end of the input port (P1) of surface mount 50 ohmages and the output port (P2) of surface mount 50 ohmages parallel connection first order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), third level parallel resonance unit (L3, C3), fourth stage parallel resonance unit (L4; C4), level V parallel resonance unit (L5, C5), the 6th grade of parallel resonance unit (L6, C6), the 7th grade of parallel resonance unit (L7, C7), the 8th grade of parallel resonance unit (L8; C8), the 9th grade of parallel resonance unit (L9, C9), (L1 is C1) with parallel resonance unit, the second level (L2 in first order parallel resonance unit; C2) between the series connection first order between coupling circuit (L12, C12), parallel resonance unit, the second level (L2; C2) and third level parallel resonance unit (L3, C3) between the series connection second level between coupling circuit (L23, C23); Third level parallel resonance unit (L3, C3) with fourth stage parallel resonance unit (L4, C4) between the series connection third level between coupling circuit (L34; C34), (L4 is C4) with level V parallel resonance unit (L5 in fourth stage parallel resonance unit; C5) between the series connection fourth stage between coupling circuit (L45, C45), level V parallel resonance unit (L5; C5) and the 6th grade of parallel resonance unit (L6, C6) between coupling circuit between the series connection level V (L56, C56); The 6th grade of parallel resonance unit (L6, C6) with the 7th grade of parallel resonance unit (L7, C7) between series connection the 6th interstage coupling circuit (L67; C67), (L7 is C7) with the 8th grade of parallel resonance unit (L8 in the 7th grade of parallel resonance unit; Series connection the 7th interstage coupling circuit C8) (L78, C78), the 8th grade of parallel resonance unit (L8; C8) and the 9th grade of parallel resonance unit (L9, C9) between series connection the 8th interstage coupling circuit (L89, C89); Said first order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), third level parallel resonance unit (L3; C3), fourth stage parallel resonance unit (L4, C4), level V parallel resonance unit (L5, C5), the 6th grade of parallel resonance unit (L6; C6), the 7th grade of humorous parallel connection unit (L7 that shakes; C7), the 8th grade of parallel resonance unit (L8, C8), the 9th grade of parallel resonance unit (L9, C9) ground connection respectively.
2. according to the desired LTCC ultra broadband of claim 1 microfilter; It is characterized in that: 50 ohmage input ports (P1) termination input signal of mounted on surface; One end of another termination input inductance (L10), the other end of input inductance (L10) respectively with first order parallel resonance unit (L1, coupling circuit (L12 between end C1) and the first order; C12) a end connects; Wherein (L1 C1) is formed in parallel by first inductance (L1) and first electric capacity (C1), and coupling circuit is in series by first coupling inductance (L12) and first coupling capacitance (C12) between the first order in first order parallel resonance unit; Coupling circuit (L12 between the first order; C12) the other end and parallel resonance unit, the second level (L2; Coupling circuit between an end C2) and the second level (L23, end C23) links to each other, and wherein second level parallel resonance unit (L2, C2) is formed in parallel by first inductance (L2) and first electric capacity (C2); (L23's coupling circuit between the second level C23) is in series by first coupling inductance (L23) and second coupling capacitance (C23); Coupling circuit (L23 between the second level; C23) the other end and third level parallel resonance unit (L3; Coupling circuit between an end C3) and the third level (L34, end C34) links to each other, and wherein third level parallel resonance unit (L3, C3) is formed in parallel by the 3rd inductance (L3) and the 3rd electric capacity (C3); (L34's coupling circuit between the third level C34) is in series by the 3rd coupling inductance (L34) and the 3rd coupling capacitance (C34); The 3rd coupling circuit (L34; C34) the other end and fourth stage parallel resonance unit (L4; Coupling circuit between an end C4) and the fourth stage (L45, end C45) links to each other, and wherein fourth stage parallel resonance unit (L4, C4) is formed in parallel by the 4th inductance (L4) and the 4th electric capacity (C4); (L45's coupling circuit between the fourth stage C45) is in series by the 4th coupling inductance (L45) and the 4th coupling capacitance (C45); Coupling circuit (L23 between the fourth stage; C23) the other end and level V parallel resonance unit (L5; Coupling circuit between an end C5) and level V (L56, end C56) links to each other, and wherein level V parallel resonance unit (L5, C5) is formed in parallel by the 5th inductance (L5) and the 5th electric capacity (C5); (L56's coupling circuit between level V C56) is in series by the 5th coupling inductance (L56) and the 5th coupling capacitance (C56); The 5th coupling circuit (L56; C56) the other end and the 6th grade of parallel resonance unit (L6; An end C6) and the 6th interstage coupling circuit (L67, end C67) links to each other, and wherein the 6th grade of parallel resonance unit (L6, C6) is formed in parallel by the 6th inductance (L6) and the 6th electric capacity (C6); (L67's the 6th interstage coupling circuit C67) is in series by the 6th coupling inductance (L67) and the 6th coupling capacitance (C67); The 6th interstage coupling circuit (L67; C67) the other end and the 7th grade of parallel resonance unit (L7; An end C7) and the 7th interstage coupling circuit (L78, end C78) links to each other, and wherein the 7th grade of parallel resonance unit (L7, C7) is formed in parallel by the 7th inductance (L7) and the 7th electric capacity (C7); (L78's the 7th interstage coupling circuit C78) is in series by the 7th coupling inductance (L78) and the 7th coupling capacitance (C78); The 7th interstage coupling circuit (L78; C78) the other end and the 8th grade of parallel resonance unit (L8; An end C8) and the 8th interstage coupling circuit (L89, end C89) links to each other, and wherein the 8th grade of parallel resonance unit (L8, C8) is formed in parallel by the 8th inductance (L8) and the 8th electric capacity (C8); (L89's the 8th interstage coupling circuit C89) is in series by the 8th coupling inductance (L89) and the 8th coupling capacitance (C89); The 8th coupling circuit (L89, other end C89) respectively with the 9th antiresonant circuit (L9, end C9) links to each other with an end of outputting inductance (L11); One end of the other end of outputting inductance (L11) and output port (P2), the other end of output port (P2) is exported signal; Said first order resonant element (L1, C1), second level resonant element (L2, C2), third level resonant element (L3; C3), fourth stage resonant element (L4, C4), the level V resonant element (L5, C5), the 6th grade of resonant element (L6; C6), the 7th grade of resonant element (L7; C7), the 8th grade of resonant element (L8, C8), (L9, other end C9) is ground connection respectively for the 9th grade of resonant element.
3. according to the desired LTCC ultra broadband of claim 1 microfilter, it is characterized in that: input port (P1), input inductance (L10), first order parallel resonance unit (L1, C1), coupling circuit between the first order (L12, C12), parallel resonance unit, the second level (L2; C2), coupling circuit between the second level (L23, C23), third level parallel resonance unit (L3, C3), coupling circuit between the third level (L34, C34), fourth stage parallel resonance unit (L4; C4), coupling circuit between the fourth stage (L45, C45), the 5th parallel resonance unit (L5, C5); Coupling circuit between level V (L56, C56), the 6th parallel resonance unit (L6, C6); The 6th interstage coupling circuit (L67, C67), the 7th parallel resonance unit (L7, C7); The 7th interstage coupling circuit (L78, C78), the 8th parallel resonance unit (L8, C8); The 8th interstage coupling circuit (L89, C89), the 9th parallel resonance unit (L9, C9); Outputting inductance (L11), output port (P2) and earth terminal all adopt multilayer LTCC technology to realize, wherein input inductance (L10), outputting inductance (L11) all adopt the strip line of distributed constant to realize; First order parallel resonance unit (L1, C1), parallel resonance unit, the second level (L2, C2), third level parallel resonance unit (L3; C3), fourth stage parallel resonance unit (L4, C4), level V parallel resonance unit (L5, C5), the 6th grade of parallel resonance unit (L6; C6), the 7th grade of parallel resonance unit (L7, C7), the 8th grade of parallel resonance unit (L8, C8), the 9th grade of parallel resonance unit (L9; C9) all adopt three layers of folding coupling strip line of distributed constant to realize that wherein every layer of strip line one end is unsettled, other end ground connection.
4. according to the desired LTCC ultra broadband of claim 1 microfilter; It is characterized in that: coupling circuit (L12 between the first order wherein; C12) in, first coupling inductance (L12) adopts first order parallel resonance unit, and (L1 is C1) with parallel resonance unit, the second level (L2; C2) directly coupling between, space coupling and distributed constant inductance are realized; First coupling capacitance (C12) adopt first order parallel resonance unit (L1, C1) with parallel resonance unit, the second level (L2, C2) between directly coupling, space coupling and distributed constant electric capacity realize; Coupling circuit (L23 between the second level; C23) in, coupling inductance between the second level (L23) adopts parallel resonance unit, the second level, and (L2 is C2) with third level parallel resonance unit (L3; C3) directly coupling between, space coupling and distributed constant inductance are realized; Second coupling capacitance (C23) adopt parallel resonance unit, the second level (L2, C2) with third level parallel resonance unit (L3, C3) between directly coupling, space coupling and distributed constant electric capacity realize; Coupling circuit (L34 between the third level; C34) in, the 3rd coupling inductance (L34) adopts third level parallel resonance unit, and (L3 is C3) with fourth stage parallel resonance unit (L4; C4) directly coupling between, space coupling and distributed constant inductance are realized; The 3rd coupling capacitance (C34) adopt third level parallel resonance unit (L3, C3) with fourth stage parallel resonance unit (L4, C4) between directly coupling, space coupling and distributed constant electric capacity realize; Coupling circuit (L45 between the fourth stage; C45) in, the 4th coupling inductance (L45) adopts fourth stage parallel resonance unit, and (L4 is C4) with level V parallel resonance unit (L5; C5) directly coupling between, space coupling and distributed constant inductance are realized; The 4th coupling capacitance (C45) adopt fourth stage parallel resonance unit (L4, C4) with level V parallel resonance unit (L5, C5) between directly coupling, space coupling and distributed constant electric capacity realize; Coupling circuit (L56 between level V; C56) in, the 5th coupling inductance (L56) adopts level V parallel resonance unit, and (L5 is C5) with the 6th grade of parallel resonance unit (L6; C6) directly coupling between, space coupling and distributed constant inductance are realized; The 5th coupling capacitance (C56) adopt level V parallel resonance unit (L5, C5) with the 6th grade of parallel resonance unit (L6, C6) between directly coupling, space coupling and distributed constant electric capacity realize; The 6th interstage coupling circuit (L67; C67) in, the 6th coupling inductance (L67) adopts the 6th grade of parallel resonance unit, and (L6 is C6) with the 7th grade of parallel resonance unit (L7; C7) directly coupling between, space coupling and distributed constant inductance are realized; The 6th coupling capacitance (C67) adopt the 6th grade of parallel resonance unit (L6, C6) with the 7th grade of parallel resonance unit (L7, C7) between directly coupling, space coupling and distributed constant electric capacity realize; The 7th interstage coupling circuit (L78; C78) in, the 7th coupling inductance (L78) adopts the 7th grade of parallel resonance unit, and (L7 is C7) with the 8th grade of parallel resonance unit (L8; C8) directly coupling between, space coupling and distributed constant inductance are realized; The 7th coupling capacitance (C78) adopt the 7th grade of parallel resonance unit (L7, C7) with the 8th grade of parallel resonance unit (L8, C8) between directly coupling, space coupling and distributed constant electric capacity realize; The 8th interstage coupling circuit (L89; C89) in, the 8th coupling inductance (L89) adopts the 8th grade of parallel resonance unit, and (L8 is C8) with the 9th grade of parallel resonance unit (L9; C9) directly coupling between, space coupling and distributed constant inductance are realized; The 8th coupling capacitance (C89) adopt the 8th grade of parallel resonance unit (L8, C8) with the 9th grade of parallel resonance unit (L9, C9) between directly coupling, space coupling and distributed constant electric capacity realize; Said first order resonant element (L1, C1), second level resonant element (L2, C2), third level resonant element (L3; C3), fourth stage resonant element (L4, C4), the level V resonant element (L5, C5), the 6th grade of resonant element (L6; C6), the 7th grade of resonant element (L7; C7), the 8th grade of resonant element (L8, C8), the 9th grade of resonant element (L9, C9) ground connection respectively.
5. according to the desired LTCC ultra broadband of claim 1 microfilter, it is characterized in that: coupling circuit between the first order (L12, C12), coupling circuit (L23 between the second level; C23), coupling circuit (L34 between the third level; C34), coupling circuit between the fourth stage (L45, C45), coupling circuit between level V (L56, C56), the 6th interstage coupling circuit (L67; C67), the 7th interstage coupling circuit (L78; C78), (L89 C89) has introduced direct coupling to the 8th interstage coupling circuit, first order parallel resonance unit (L1; C1) and the humorous unit of second level parallel connection (L1, it is continuous directly to strengthen the transverse slat (S12) that is coupled with first between C2); Parallel resonance unit, the second level (L2, C2) with the humorous unit of third level parallel connection (L3, it is continuous directly to strengthen the transverse slat (S23) that is coupled with second between C3); Third level parallel resonance unit (L3, C3) with the humorous unit of fourth stage parallel connection (L4, it is continuous directly to strengthen the transverse slat (S34) that is coupled with the 3rd between C4); Fourth stage parallel resonance unit (L4, C4) with the humorous unit of level V parallel connection (L5, it is continuous directly to strengthen the transverse slat (S45) that is coupled with the 4th between C5); Level V parallel resonance unit (L5, C5) with the 6th grade of humorous unit of parallel connection (L6, it is continuous directly to strengthen the transverse slat (S56) that is coupled with the 5th between C6); The 6th grade of parallel resonance unit (L6, C6) with the 7th grade of humorous unit of parallel connection (L7, it is continuous directly to strengthen the transverse slat (S67) that is coupled with the 6th between C7); The 7th grade of parallel resonance unit (L7, C7) with the 8th grade of humorous unit of parallel connection (L8, it is continuous directly to strengthen the transverse slat (S78) that is coupled with the 7th between C8); The 8th grade of parallel resonance unit (L8, C8) with the 9th grade of humorous unit of parallel connection (L9, it is continuous directly to strengthen the transverse slat (S89) that is coupled with the 8th between C9); First strengthens coupling transverse slat (S12), second strengthens coupling transverse slat (S23), the 3rd and strengthens coupling transverse slat (S34), the 4th and strengthen coupling transverse slat (S45), the 5th and strengthen coupling transverse slat (S56), the 6th and strengthen coupling transverse slat (S67), the 7th and strengthen coupling transverse slat (S78) and the 8th to strengthen coupling transverse slat (S89) all are segment strip lines, all adopts the realization of multilayer LTCC technology; Said first order resonant element (L1, C1), second level resonant element (L2, C2), third level resonant element (L3; C3), fourth stage resonant element (L4, C4), the level V resonant element (L5, C5), the 6th grade of resonant element (L6; C6), the 7th grade of resonant element (L7; C7), the 8th grade of resonant element (L8, C8), the 9th grade of resonant element (L9, C9) ground connection respectively.
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| CN104269590B (en) * | 2014-09-12 | 2016-09-21 | 南京理工大学 | A kind of new micro three-dimensional second order bimodulus high-performance band-pass filter device |
| CN106230395A (en) * | 2016-08-28 | 2016-12-14 | 戴永胜 | A kind of height suppression UHF waveband low noise amplifier module |
| CN106230395B (en) * | 2016-08-28 | 2019-04-05 | 深圳波而特电子科技有限公司 | A kind of height inhibition UHF waveband low noise amplifier module |
| CN109193085A (en) * | 2018-08-30 | 2019-01-11 | 南京理工大学 | A kind of LTCC high-performance micro balun filter |
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