CN101453054B - The structure of the double symmetrical antenna - Google Patents
The structure of the double symmetrical antenna Download PDFInfo
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- CN101453054B CN101453054B CN200710198701A CN200710198701A CN101453054B CN 101453054 B CN101453054 B CN 101453054B CN 200710198701 A CN200710198701 A CN 200710198701A CN 200710198701 A CN200710198701 A CN 200710198701A CN 101453054 B CN101453054 B CN 101453054B
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- 230000009977 dual effect Effects 0.000 claims 10
- 230000010287 polarization Effects 0.000 description 12
- 230000005855 radiation Effects 0.000 description 10
- 238000013461 design Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention relates to a structure of a double-symmetrical antenna, which is used on a broadband product to provide a wide frequency band of 2.1 GHz-5.8 GHz. When the printed circuit board of the double symmetrical antenna is manufactured, two symmetrical ladder-shaped antennas are respectively manufactured on two surfaces of the printed circuit board, wherein one ladder-shaped antenna on one surface of the printed circuit board is provided with a signal feed-in part at the tail edge of the adjacent side facing the other ladder-shaped antenna, and each ladder-shaped antenna on each surface is respectively penetrated through the printed circuit board by a lead and is electrically connected with the ladder-shaped antenna on the other surface, so that the two ladder-shaped antennas on one surface of the printed circuit board can correspond to a first frequency range, the two ladder-shaped antennas on the other surface can correspond to a second frequency range, and the first frequency range and the second frequency range are partially overlapped.
Description
Technical field
The present invention relates to a kind of structure of broad-band antenna, particularly relate to the antenna structure that a broad frequency range can be provided on a kind of broadband product.
Background technology
When broadband product was used in the WiMAX system at present, the modal antenna element frequency range in various countries was: (1) licensed band (Licensed Band): U.S. WCS (Wireless Communication Services) frequency range: 2.305-2.320GHz, 2.345-2.360GHz; U.S. MMDS (Multi-point MicrowaveDistribution System or Multi-channel Multi-point Distribution System) frequency range: 2.50-2.69GHz; International FWA (Fixed Wireless Access) frequency range: 3.4-3.7GHz.(2) unlicensed band (Unlicensed Band): 2.4GHz industry science doctor (ISM) frequency range: 2.4000-2.4835GHz; 5GHz U-NII (Unlicensed National InformationInfrastructure) frequency range: 5.15-5.35GHz, 5.470-5.725GHz, 5.725-5.825GHz; International FWA (Fixed Wireless Access) frequency range: 3.4-3.7GHz.(3) be applied to the system of the UWB (Ultra-WideBand) of IEEE802.15.3a, its operation frequency range is at the wireless telecommunication system of the high speed of 3.1GHz-4.8GHz, short distance, Hypomobility.
Yet, be used in separately in the above-mentioned frequency range, do not have the technology that can cover above-mentioned frequency range fully as yet; Like United States Patent (USP) 7; Double-antenna structure in 230, No. 578 " dual-band dipole antenna " only can provide two kinds of frequency ranges of 2.3GHz～2.6GHz and 5GHz～6GHz, and United States Patent (USP) 7; 242; Multiple frequency antenna structure in No. 352 " Multi-band or wide-band antenna " can provide 4 kinds of frequencies of 2.4GHz, 5.4GHz or 2.9GHz, 6.2GHz, but 4 kinds of above-mentioned frequencies can't be provided under the same time, covers the above-mentioned various frequencies of introducing fully and reach.So, if can design a kind of structure of broad-band antenna, a plurality of frequencies can be provided simultaneously, be enough to coat fully above-mentioned various frequency ranges, to satisfy everybody's demand, the problem that solves of the anxious desire of industry for this reason then.
Summary of the invention
The objective of the invention is is providing a kind of disymmetry antenna structure, so that the broad frequency range with 2.1GHz～5.8GHz to be provided, to meet all frequency ranges of WiMAX standard.
According to above-mentioned purpose, the present invention is a kind of structure of disymmetry antenna, can be applicable to comprise on the broadband product:
One printed circuit board (PCB);
2 first ladder type antennas are the one sides that respectively are disposed at this printed circuit board (PCB) with an adjacent top margin symmetrically, and this 2 first ladder type antenna can supply in a first frequency scope, to pass and connect signal;
2 second ladder type antennas; Be that each is disposed at the one side of this printed circuit board (PCB) back to these 2 first ladder type antennas symmetrically with an adjacent top margin; And each this second ladder type antenna passes this printed circuit board (PCB) with at least one lead; Respectively with equidirectional one first the ladder type antenna is electric joins, and this 2 second ladder type antenna can supply in a second frequency scope, to pass and connect signal, and this second frequency scope and this first frequency range section are overlapping.
The frequency range of corresponding 2.1～3.3 gigahertzs of this 2 first ladder type antenna wherein, and the signal that can supply to receive in the same frequency band and transmitted.
Wherein this 2 first ladder type antenna in the face of the spacing of this top margin of the length of this top margin and these 2 first ladder type antennas, is in order to control this pairing frequency range of 2 first ladder type antennas and frequency starting point mutually.
Wherein the length of this top margin of facing mutually of this 2 first ladder type antenna is 8 millimeters～11 millimeters, and the spacing between this top margin of facing mutually of this 2 first ladder type antenna is 1.5 millimeters～5.5 millimeters.
Wherein the trapezoidal height of this 2 first ladder type antenna and trapezoidal opening angle are in order to control the pairing frequency band of this 2 first ladder type antenna.
Wherein the trapezoidal height of this 2 first ladder type antenna is 18 millimeters～30 millimeters, and the opening angle of these 2 first ladder type antennas is 1.2 degree～6.2 degree.
The frequency range of corresponding 3～5.8 gigahertzs of this 2 second ladder type antenna wherein, and the signal that can supply to receive in the same frequency band and transmitted.
Wherein the spacing between the length of this top margin of facing mutually of this 2 second ladder type antenna and this top margin that this 2 second ladder type antenna is faced mutually is in order to control this pairing frequency range of 2 second ladder type antennas and frequency starting point.
Wherein the length of this top margin of facing mutually of this 2 second ladder type antenna is 6 millimeters～11 millimeters, and the spacing between this top margin of facing mutually of this 2 second ladder type antenna is 0.5 millimeter～5.5 millimeters.
Wherein the trapezoidal height of this 2 second ladder type antenna and its ladder type opening angle are in order to control the pairing frequency band of this 2 second ladder type antenna.
Wherein the height of these 2 second ladder type antennas is 12 millimeters～25 millimeters, and the opening angle of these 2 second ladder type antennas is 1.2 degree～6.2 degree.
In sum, by the structure of the above-mentioned disymmetry antenna of the present invention,, be enough to coat fully the standard frequency range common of WiMAX in various countries so that a plurality of frequencies to be provided simultaneously.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
For letting above and other objects of the present invention, characteristic, advantage and the embodiment can be more obviously understandable, appended graphic detailed description be following:
Fig. 1 is the schematic perspective view of the structure of disymmetry antenna of the present invention;
Fig. 2 is the top view of the structure of disymmetry antenna of the present invention in printed circuit board (PCB);
Fig. 3 is the following view of the structure of disymmetry antenna of the present invention in printed circuit board (PCB);
Fig. 4 is actual measurement voltage standing wave ratio oscillogram (VSWR) schematic diagram data of the structure of disymmetry antenna of the present invention;
Fig. 5 a is the radiation pattern figure for the structure operation of disymmetry antenna of the present invention perpendicular polarization when bandwidth 2.1～2.7 gigahertzs (GHz);
Fig. 5 b is the radiation pattern figure for the structure operation of disymmetry antenna of the present invention perpendicular polarization when bandwidth 3.1～3.7 gigahertzs (GHz);
Fig. 5 c is the radiation pattern figure for the structure operation of disymmetry antenna of the present invention perpendicular polarization when bandwidth 4.1～4.7 gigahertzs (GHz);
Fig. 5 d is the radiation pattern figure for the structure operation of disymmetry antenna of the present invention perpendicular polarization when bandwidth 5.1～5.8 gigahertzs (GHz);
Fig. 6 a is the radiation pattern figure for the structure operation of disymmetry antenna of the present invention horizontal polarization when bandwidth 2.1～2.7 gigahertzs (GHz);
Fig. 6 b is the radiation pattern figure for the structure operation of disymmetry antenna of the present invention horizontal polarization when bandwidth 3.1～3.7 gigahertzs (GHz);
Fig. 6 c is the radiation pattern figure for the structure operation of disymmetry antenna of the present invention horizontal polarization when bandwidth 4.1～4.7 gigahertzs (GHz);
Fig. 6 d is the radiation pattern figure for the structure operation of disymmetry antenna of the present invention horizontal polarization when bandwidth 5.1～5.8 gigahertzs (GHz).
Wherein, Reference numeral:
1: disymmetry antenna structure 131: conducting end
10: printed circuit board (PCB) 132: earth terminal
11: the first 141,142: lead
12: the second h: trapezoidal height
111,112: the first ladder type antenna l: length
121,122: the second ladder type antenna d: spacing
13: signal feed-in part θ: opening angle
130: signal conductor
Embodiment
The present invention exposes a kind of structure of disymmetry antenna; See also Fig. 1～shown in Figure 3; Wherein Fig. 1 is the schematic perspective view of the structure of disymmetry antenna of the present invention; Fig. 2 is the top view of the structure of disymmetry antenna of the present invention in printed circuit board (PCB), and Fig. 3 is the following view of the structure of disymmetry antenna of the present invention in printed circuit board (PCB).The structure 1 of disymmetry antenna of the present invention is respectively to be provided with two ladder type antennas 111,112 and 121,122 on first 11 and second 12 in two opposites of a printed circuit board (PCB) 10; First 11 and second 12 two ladder type antennas 111,112 and 121,122 respectively symmetrically; Be that two symmetrical each other ladder type antennas 111,112 respectively are called the first ladder type antenna 111 of left and the first right-hand ladder type antenna 112 on its first 11; And first ladder type antenna 111 of left and the right-hand first ladder type antenna 112 each is symmetrical with an adjacent top margin; On its second 12 two each other the ladder type antennas 121,122 of symmetry respectively be called the second ladder type antenna 121 of left and the second right-hand ladder type antenna 122, and second ladder type antenna 121 of left and the right-hand second ladder type antenna 122 each is symmetrical with an adjacent top margin.And the first ladder type antenna 111 of first 11 left of printed circuit board (PCB) 10 is provided with a signal feed-in part 13 (RF Feed point) in the edge place, top margin end in the face of the first right-hand ladder type antenna 112; And each first ladder type antenna 111,112 that printed circuit board (PCB) is 10 first 11 sees through printed circuit board (PCB) 10 with lead 141,142 respectively; And have respectively 121,122 electric joining of the second ladder type antenna of equidirectional with each first ladder type antenna 111,112 on 10 second 12 of the printed circuit board (PCB)s; And 2 first echelon antennas 111,112 on first 11 of printed circuit board (PCB) 10 can a corresponding first frequency scope; And second 12 2 second echelon antennas 121,122 of printed circuit board (PCB) 10 can a corresponding second frequency scope, and wherein first frequency scope and second frequency scope have the overlapping of part.
In the preferred embodiment of the present invention; The structure 1 of this disymmetry antenna can be supplied in-building type or the external hanging type antenna that is used for a broadband product (as: network card); When being the printed circuit board (PCB) 10 in the structure 1 of making this disymmetry antenna; On printed circuit board (PCB) 10, be laid with the part of required control circuit of this broadband product and required installation; And with the pattern of metal micro-strip, be provided with area and 2 first all symmetrical ladder type antennas 111,112 of shape in first 11 of printed circuit board (PCB) 10, second 12 in printed circuit board (PCB) 10 is provided with area and 2 second all symmetrical ladder type antennas 121,122 of shape again.See also shown in Figure 2 again; And the first ladder type antenna 111 of 10 first 11 lefts of printed circuit board (PCB) is provided with a signal feed-in part 13 in the face of the edge place, top margin end of its first right-hand ladder type antenna 112; Signal feed-in part 13 is connected with the conducting end 131 of a signal conductor 130, and the earth terminal 132 of signal conductor 130 and with right-hand 112 electric the joining of the first ladder type antenna.
What this be worth to stress be, the position shown in signal feed-in part 13 is not limited on Fig. 2, the first ladder type antenna 111 of left is in all being made as signal feed-in part 13 of the present invention in the face of the arbitrary position on the top margin end edge of the first right-hand ladder type antenna 112.
And be the connection of guaranteeing each aerial signal on the printed circuit board (PCB) 10; To obtain the exchange of feedback signal etc.; The first ladder type antenna 111 of 10 first 11 lefts of printed circuit board (PCB) is electrically connected with at least one lead 141 (Via) respectively in the edge of a top margin of facing its right-hand first ladder type antenna 112; Each lead 141 runs through printed circuit board (PCB) 10, and with the second ladder type antenna 121 of 10 second 12 lefts of printed circuit board (PCB) electric joining of edge in the face of a top margin of its second right-hand ladder type antenna 122; Likewise; 10 first 11 first right-hand ladder type antennas 112 of printed circuit board (PCB) are electrically connected with at least one lead 142 (Via) in the edge of a top margin of the first ladder type antenna 111 of facing its left; Each lead 142 runs through printed circuit board (PCB) 10; With edge electric join of 10 second 12 second right-hand ladder type antennas 122 of printed circuit board (PCB) in the face of a top margin of the second ladder type antenna 121 of its left; So, 111,112 on the 2 first ladder type antennas that printed circuit board (PCB) is 10 first 11 can receive the signal that is transmitted in the same frequency band in order to the frequency range of corresponding 2.10～3.3 gigahertzs (GHz); The 2 second ladder type antennas 121,122 that printed circuit board (PCB) is 10 second 12 then can corresponding 3～5.8 gigahertzs (GHz) frequency range; Receive the signal that is transmitted in the same frequency band, then the ladder type antenna 111,112 and 121,122 of printed circuit board (PCB) 10 two-sided 11,12 just can be contained the frequency range of 2.10～5.8 gigahertzs (GHz), the signal that receives in the same frequency band simultaneously to be transmitted.
And; See also Fig. 2, shown in Figure 3 again; In the structure 1 of this case disymmetry antenna; If 2 first echelon antennas 111,112 on 10 first 11 of the printed circuit board (PCB)s and 2 second echelon antennas 121,122 on second 12 have different trapezoidal height (h) respectively, during mutually in the face of spacing (d) and the trapezoidal opening angle (θ) of the length (l) of a top margin, two between trapezoidal, also can influence each first and second echelon antenna 111,112 and 121,122 frequency range (band width), frequency starting point (frequency start point) and the frequency bands (band) of correspondences respectively:
(A) if adjust length (l) size of the top margin that each face ladder type antenna (i.e. first or two ladder type antennas 111,112 or 121,122) of printed circuit board (PCB) 10 faces mutually effectively; Again each face ladder type antenna of collocation control (i.e. first or two ladder type antennas 111,112 or 121,122) between spacing (d), the just frequency range of may command ladder type antenna and frequency starting point.
In present embodiment; The left and right side first ladder type antenna 111,112 that printed circuit board (PCB) of the present invention is 10 first 11 is 8 millimeters (mm)～11 millimeter (mm) in the face of the length (l) of a top margin each other; And its spacing (d) is 1.5 millimeters (mm)～5.5 millimeter (mm); 2 first ladder type antenna 111,112 to the frequency ranges of then therefore adjusting this face 11 are 1.2 gigahertzs (GHz), and the frequency starting point is the standard of 2.1 gigahertzs (GHz); Mode of operation likewise; The left and right side second ladder type antenna 121,122 that printed circuit board (PCB) is 10 second 12 is 6 millimeters (mm)～11 millimeter (mm) in the face of the length (l) of a top margin mutually; And its spacing (d) is 0.5 millimeter (mm)～5.5 millimeter (mm); 2 second ladder type antenna 121,122 to the frequency ranges of then therefore adjusting this face 12 are 2.8 gigahertzs (GHz), and the frequency starting point is the standard of 3 gigahertzs (GHz).
(B) if adjust the ladder type height (h) of each face ladder type antenna (i.e. first or two ladder type antennas 111,112 or 121,122) of printed circuit board (PCB) 10 effectively; The opening angle (θ) of each face ladder type antenna of the control printed circuit board of arranging in pairs or groups again 10 (i.e. first or two ladder type antennas 111,112 or 121,122), the just frequency band of may command ladder type antenna.
In present embodiment; The trapezoidal height (h) of the left and right side first ladder type antenna 111,112 that printed circuit board (PCB) of the present invention is 10 first 11 is 18 millimeters (mm)～30 millimeter (mm); And its opening angle (θ) is respectively 1.2 degree (deg)～6.2 degree (deg), and then the frequency band of these face 11 ladder type antennas 111,112 is 2.10～3.3 gigahertzs (GHz); Mode of operation likewise; The height (h) of the 2 second ladder type antennas 121,122 that printed circuit board (PCB) is 10 second 12 is respectively 12 millimeters (mm)～25 millimeter (mm); And when its opening angle (θ) was respectively 1.2 degree (deg)～6.2 degree (deg), the frequency band of the second ladder type antenna 121,122 of this face 12 then was 3～5.8 gigahertzs (GHz).
So can know; The present invention can be in response to the different frequency range characteristic (even reaching 7.0GHz) of different frequency range products; And to above-mentioned parameter (i.e. the length (1) of the trapezoidal height (h) of two ladder type antennas, two trapezoidal top margins of facing mutually, two trapezoidal spacing (d) and trapezoidal opening angle (θ)) with a certain proportion of variation; To obtain suitable size; Hence one can see that, and the ladder type antenna 121,122 that the ladder type antenna that printed circuit board (PCB) is 10 first 11 is 111,112 and second 12 can not need identical.
The present invention structure 1 actual fabrication of this disymmetry antenna is accomplished, and after detecting, its testing result is with as shown in Figure 4 according to the design condition of aforementioned preferred embodiment, and Fig. 4 is the measured data sketch map of disymmetry antenna of the present invention.Wherein the 2 first ladder type antennas 111,112 of 10 first 11 of this printed circuit board (PCB)s are that 2 gigahertzs (GHz) have good frequency response near 3.3 gigahertzs (GHz) at frequency band; And voltage standing wave ratio (Voltage Standing Wave Ratio; Hereinafter to be referred as VSWR) value is 2.067 when frequency band is 2.1 gigahertzs (GHz) only; All the other are all less than 2.0 design standard; And the second ladder type antenna 121,122 of 10 second 12 of this printed circuit board (PCB)s has good frequency response near frequency band is 3 gigahertzs (GHz) to 5.8 gigahertzs (GHz); And the VSWR value is all less than 2.0 design standard, so, this disymmetry antenna structure 1 just can have the frequency range that reaches 3.7 gigahertzs (GHz).
Moreover; For the expression disymmetry antenna of the present invention structure 1 each frequency range in 2.1 gigahertzs (GHz) to 5.8 gigahertzs (GHz) all available; See also shown in Fig. 5 a～Fig. 5 d; Fig. 5 a～Fig. 5 d is respectively disymmetry antenna structure 1 of the present invention when operating in 2.1～2.7 gigahertzs (GHz), 3.1～3.7 gigahertzs (GHz), 4.1～4.7 gigahertzs (GHz), 5.1～5.8 gigahertzs (GHz), in following perpendicular polarization radiation pattern figure that produces respectively of the measurement in antenna darkroom, can know among Fig. 5 a～Fig. 5 d thus; The antenna gain mean value of the structure 1 of disymmetry antenna in perpendicular polarization is approaching+2.0～-1.0 decibels of (decibel; DB), represent the structure 1 of disymmetry antenna in the frequency range of 2.1GHz～5.8GHz, all can use, and all be in the good state.
See also again shown in Fig. 6 a～Fig. 6 d; When the structure 1 that Fig. 6 a～Fig. 6 d is respectively disymmetry antenna of the present invention operates in 2.1～2.7 gigahertzs (GHz), 3.1～3.7 gigahertzs (GHz), 4.1～4.7 gigahertzs (GHz), 5.1～5.8 gigahertzs (GHz); The horizontal polarization radiation pattern figure that produces respectively; Can know among Fig. 6 a～Fig. 6 d thus, and approaching-1.0～-2.0 decibels of the antenna gain mean value of the structure 1 of disymmetry antenna in horizontal polarization (decibel, dB); Represent the structure 1 of disymmetry antenna in the frequency range of 2.1GHz～5.8GHz, all can use, and all be in spendable state.
So; When a broadband product desire is used a kind of wireless telecommunications Internet protocol; As: IEEE802.11a/b/g/n, global intercommunication microwave access (Worldwide Interoperability for Microwave Access; WiMAX), when ultra broadband (Ultra Wide Band) standard or blue bud (Bluetooth) standard; The structure 1 that is disymmetry antenna of the present invention capable of using is covered in the characteristic of 2.1 gigahertzs (GHz) to 5.8 gigahertzs (GHz) frequency band fully, and enough broadband range are provided, and has effectively promoted the system effectiveness of broadband product.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710198701A CN101453054B (en) | 2007-12-06 | 2007-12-06 | The structure of the double symmetrical antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710198701A CN101453054B (en) | 2007-12-06 | 2007-12-06 | The structure of the double symmetrical antenna |
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| Publication Number | Publication Date |
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| CN101453054A CN101453054A (en) | 2009-06-10 |
| CN101453054B true CN101453054B (en) | 2012-10-24 |
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| CN200710198701A Expired - Fee Related CN101453054B (en) | 2007-12-06 | 2007-12-06 | The structure of the double symmetrical antenna |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4157548A (en) * | 1976-11-10 | 1979-06-05 | The United States Of America As Represented By The Secretary Of The Navy | Offset fed twin electric microstrip dipole antennas |
| CN1628399A (en) * | 2001-04-06 | 2005-06-15 | 泰科电子罗吉斯迪克思股份公司 | Dual band patch bowtie slot antenna structure |
| WO2006114724A1 (en) * | 2005-04-25 | 2006-11-02 | Koninklijke Philips Electronics N. V. | Wireless link module comprising two antennas |
| CN1898837A (en) * | 2003-11-21 | 2007-01-17 | 阿蒂密有限公司 | Ultrawide antenna |
| CN101005156A (en) * | 2006-01-16 | 2007-07-25 | 环隆电气股份有限公司 | High Gain Broadband Panel Antenna |
-
2007
- 2007-12-06 CN CN200710198701A patent/CN101453054B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4157548A (en) * | 1976-11-10 | 1979-06-05 | The United States Of America As Represented By The Secretary Of The Navy | Offset fed twin electric microstrip dipole antennas |
| CN1628399A (en) * | 2001-04-06 | 2005-06-15 | 泰科电子罗吉斯迪克思股份公司 | Dual band patch bowtie slot antenna structure |
| CN1898837A (en) * | 2003-11-21 | 2007-01-17 | 阿蒂密有限公司 | Ultrawide antenna |
| WO2006114724A1 (en) * | 2005-04-25 | 2006-11-02 | Koninklijke Philips Electronics N. V. | Wireless link module comprising two antennas |
| CN101005156A (en) * | 2006-01-16 | 2007-07-25 | 环隆电气股份有限公司 | High Gain Broadband Panel Antenna |
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| Publication number | Publication date |
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| CN101453054A (en) | 2009-06-10 |
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