CN102324602A - Inductance coupling device for TE01delta mode dielectric resonator - Google Patents
Inductance coupling device for TE01delta mode dielectric resonator Download PDFInfo
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- CN102324602A CN102324602A CN201110257212A CN201110257212A CN102324602A CN 102324602 A CN102324602 A CN 102324602A CN 201110257212 A CN201110257212 A CN 201110257212A CN 201110257212 A CN201110257212 A CN 201110257212A CN 102324602 A CN102324602 A CN 102324602A
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Abstract
The invention discloses an inductance coupling device for a TE01delta mode dielectric resonator, relating to a radio frequency and microwave filter in the technical field of wireless communication. The inductance coupling device comprises a traditional tuning screw (1), a nut (2), a dielectric tuning disk (3), a resonator (4), a base (5), a low-loss screw (6), a cavity (7), a cover plate (8), and a coupling window (10). The inductance coupling device is characterized by being provided with an inductance coupling ring (9) and an earthing screw (11); the coupling ring (9) is in a bending shape to be not less than 1/4 circular and not more than 1/3 circular and is attached to the resonator (4); and the coupling ring (9) is fixed on the cavity (7) through the earthing screw (11). The inductance coupling ring for enhancing coupling is only provided, thus the inductance coupling device is simply realized and brings certain convenience for the design of the filter; and the inductance coupling ring is used to remarkably improve the coupling amount between the dielectric resonators and conveniently realizes the control over the coupling amount.
Description
Technical field
The present invention relates to radio frequency and microwave filter in the wireless communication technology field, relate in particular to a kind of inductance coupling device of the TE01 of being used for δ mould dielectric resonator, promptly relate to the inductance coupling device in a kind of filter that is the basis with TE01 δ mould dielectric resonator.
Background technology
Along with development of wireless communication devices, the equipment of various frequency ranges, various communication standards is constantly put on market, causes the increase of networking cost.If adopt mixer that multiple standard is lumped together access network again, just can reduce the cost of networking greatly.Simultaneously, on the frequency division wireless communication apparatus,, realize simultaneously isolating each other, disturb, need to use duplexer in case transmitter produces receiver in order on same antenna, to realize receiving and sending signal.For existing radio-frequency front-end system, mainly adopt the mode of the coaxial resonant cavity filter of high Q to realize duplexer and mixer, can realize less consumption and bigger power capacity.But along with the development of technology, market to the passive product loss require increasingly high.Therefore, in order to realize littler loss requirement, need to use the higher dual-resonator microwave filter of Q value.
Especially the dielectric resonator Q value with TE01 δ mould is the highest in the industry medium resonator at present, and the loss of filter is minimum; But in existing technology, notable attribute is arranged: a little less than the interstage coupling too, cause the bandwidth of this filter too narrow thus, be not suitable for doing broadband filter in the filter of this pattern.For mixer, filter major part wherein is the filter of wide-band ratio broad especially, the difficulty that causes TE01 δ mould dielectric resonance on mixer, to use thus.
Fig. 1 is a two-stage TE01 δ mould dual-resonator microwave filter, and its coupling device relatively has typicalness: this device is made up of tuning screw 1, nut 2, dielectric tuning dish 3, resonator 4, base 5, low-loss screw 6, cavity 7, cover plate 8, coupling window 10;
Its two-stage resonator 4 is bonded in respectively on the base 5 (low-k, high-hardness ceramic support column); Adopt low-loss screw 6 to be installed in two cavitys of filter again; This mounting means can be introduced bigger horizontal direction tolerance when assembling; When producing in batches, resonator 4 spacings are inconsistent, thereby cause coupling amount uncontrollable between the resonator 4.4 of two resonators are opened a coupling window 10, and the size of this coupling window 10 is the consistent relation of variation tendency with the interstage coupling amount, when these coupling window 10 machining accuracies do not reach controlled requiring, also can have influence on the coupling amount.
This shows that there is following problem in prior art: interstage coupling intensity is low, coupling amount poor controllability.
Summary of the invention
The object of the invention just is to overcome the shortcoming and defect that prior art exists, and a kind of inductance coupling device of the TE01 of being used for δ mould dielectric resonator is provided, and can solve the problem of the low and coupling amount poor controllability of interstage coupling intensity easily.
The objective of the invention is to realize like this:
This device comprises existing tuning screw, nut, dielectric tuning dish, resonator, base, low-loss screw, cavity, cover plate and coupling window;
Be provided with coupling loop and earthing screw;
Two resonators, two bases and two low-loss screws are set in cavity, and the bottom of resonator, base, low-loss screw and cavity is connected successively, and the two ends of inductance coupling high ring connect two earthing screws respectively; On cavity, be provided with coupling window;
On the cover board be provided with two relative apertures of resonator position, two nuts and two dielectric tuning dishes, resonator is connected with the dielectric tuning dish after passing nut, aperture;
Cover plate covers on cavity.
Operation principle:
The inter-stage inductance coupling high of this device places cavity and the formed confined space of cover plate through two resonators, and resonator is fixed on the base through bonding mode, and this base is installed on the cavity through the low-loss screw, and the cavity upper surface is sealed with cover plate; On the cover board beat screwed hole and stretch into tuning screw, the bonding dielectric tuning dish in tuning screw bottom, the advance and retreat tuning screw can move up and down by related dielectric tuning dish, thus the resonance frequency of scalable resonator; Nut is fixed in tuning screw on the cover plate, and this tuning screw material therefor is nonmetallic materials, in order to avoid cause higher mode and cause the decline of resonator Q value.
The low-loss screw is distributed in the homonymy of two resonators, and inductance coupling high ring, low-loss screw and cavity have constituted an inductance coupling high ring thus, can play the effect that increases the coupling amount; Because in TE01 δ mould, near the magnetic direction the inductance coupling high loop wire is consistent with the tuning screw direction, and therefore, in order to obtain bigger magnetic flux, the inductance coupling high ring is curved afterwards tries one's best near resonator, and with the position on inductance coupling high articulating ground away from resonator.
Said cavity bottom all is fixed in through earthing screw in said inductance coupling high ring two ends; Be distributed in the both sides of coupling iris, simultaneously away from resonator, dielectric resonator is pressed close at inductance coupling high ring top; Construct the ring of a cutting magnetic field, this ring has the performance of forceful electric power sense coupling.Through the height of regulating this inductance coupling high ring and the distance that leaves resonator, then can realize control very easily to the coupling amount.
The present invention has advantage and good effect:
1. owing to only a kind of inductance coupling high ring that adds close coupling is provided, implementation is simple, for Filter Design is brought certain convenience;
2. utilize the inductance coupling high ring can significantly improve the coupling amount between the dielectric resonator, and realized control easily the coupling amount.
3. the present invention is applicable to the improvement to the inductance coupling device of TE01 δ mould dielectric resonator.
Description of drawings
Fig. 1 is existing a kind of TE01 δ mould dielectric resonator coupling device sketch map;
Fig. 2 is a schematic perspective view of the present invention;
Fig. 3 is schematic perspective view of the present invention (after removing the cover plate resonator);
Fig. 4 is a cutaway view of the present invention.
Among the figure:
The 1-tuning screw;
The 2-nut;
3-dielectric tuning dish;
4-TE01 δ mould dual-resonator microwave filter (abbreviation resonator);
The 5-base;
6-low-loss screw;
The 7-cavity;
The 8-cover plate;
9-inductance coupling high ring;
The 10-coupling window;
The 11-earthing screw.
Embodiment
The present invention is elaborated with preferred embodiment below in conjunction with accompanying drawing:
1, overall
Like Fig. 2,3,4, this device comprises existing tuning screw 1, nut 2, dielectric tuning dish 3, resonator 4, base 5, low-loss screw 6, cavity 7, cover plate 8, coupling window 10;
Be provided with inductance coupling high ring 9 and earthing screw 11;
Two resonators 4, two bases 5 and two low-loss screws 6 are set in cavity 7, and resonator 4, base 5, low-loss screw 6 and the bottom of cavity 7 are connected successively, and the two ends of inductance coupling high ring 9 connect two low-loss screws 6 respectively; On cavity 7, be provided with coupling window 10;
2, functional part
1) the inductance coupling high ring 9
Inductance coupling high ring 9 is curved, 1/4 circle≤curved≤1/3 circle, and press close to resonator 4, can obtain bigger interstage coupling coefficient (the coupling amount is double) like this.
When design, if need to obtain more coupling amount, the 9 length increases of inductance coupling high ring are made curved 1/4 circle that surpasses, the height that also can increase coupling line obtains bigger coupling amount; Distance or the height of change inductance coupling high ring 9 of also can be curved through shortening, changing between inductance coupling high ring 9 and the dielectric resonator 4 obtain required coupling amount.
2) earthing screw 11
Earthing screw 11 inductance coupling high ring 9 is fixed on the cavity 7, and good ground connection is provided for the inductance coupling high ring.
3, adjustment method
Adjustment method comprises the following steps:
1. calculate required coupling window 10 width (computational methods commonly used) according to required coupling coefficient;
2. if coupling window 10 width can satisfy the coupling coefficient requirement in theory, then coupling window 10 is suitably reduced to increase behind 3～5mm again the length of inductance coupling high ring 9;
3. if coupling window 10 can not satisfy the coupling coefficient requirement, then directly increase the length of inductance coupling high ring 9;
4. debug again inductance coupling high ring 9 height and and resonator 4 between distance, conform to up to required coupling coefficient.
Claims (3)
1. an inductance coupling device that is used for TE01 δ mould dielectric resonator comprises existing tuning screw (1), nut (2), dielectric tuning dish (3), resonator (4), base (5), low-loss screw (6), cavity (7), cover plate (8), coupling window (10);
It is characterized in that: be provided with inductance coupling high ring (9) and earthing screw (11);
Two resonators (4), two bases (5) and two low-loss screws (6) are set in cavity (7); Resonator (4), base (5), low-loss screw (6) and the bottom of cavity (7) are connected successively, and the two ends of inductance coupling high ring (9) connect two earthing screws (11) respectively; On cavity (7), be provided with coupling window (10);
Cover plate (8) is provided with two relative apertures of resonator (4) position, two nuts (2) and two dielectric tuning dishes (3), and tuning screw (1) is connected with dielectric tuning dish (3) after passing nut (2), aperture;
Cover plate (8) covers on cavity (7).
2. by the described a kind of inductance coupling device that is used for TE01 δ mould dielectric resonator of claim 1, it is characterized in that:
Described inductance coupling high ring (9) is curved, 1/4 circle≤curved≤1/3 circle, and press close to resonator (4).
3. by the described a kind of adjustment method that is used for the inductance coupling device of TE01 δ mould dielectric resonator of claim 1, it is characterized in that adjustment method comprises the following steps:
1. calculate required coupling window (10) width according to required coupling coefficient;
2. if coupling window (10) width can satisfy the coupling coefficient requirement in theory, then coupling window (10) is suitably reduced to increase behind 3～5mm again the length of inductance coupling high ring (9);
3. if coupling window (10) can not satisfy the coupling coefficient requirement, then directly increase the length of inductance coupling high ring (9);
4. debug again inductance coupling high ring (9) height and and resonator (4) between distance, up to conforming to required coupling coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110257212A CN102324602A (en) | 2011-09-01 | 2011-09-01 | Inductance coupling device for TE01delta mode dielectric resonator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110257212A CN102324602A (en) | 2011-09-01 | 2011-09-01 | Inductance coupling device for TE01delta mode dielectric resonator |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2500112A (en) * | 2012-03-05 | 2013-09-11 | Filtronic Wireless Ltd | A tuneable filter with detuning arm |
| CN103296344A (en) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | Media of dielectric filter and connection method of media |
| CN103296372A (en) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | Resonance cavity |
| CN103311634A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Dielectric resonator tuning structure |
| CN104201448A (en) * | 2014-09-10 | 2014-12-10 | 江苏贝孚德通讯科技股份有限公司 | Inductive coupling structure of dielectric filter |
| EP2824759A1 (en) * | 2012-05-16 | 2015-01-14 | Huawei Technologies Co., Ltd | Filtering device |
| CN106299556A (en) * | 2015-05-27 | 2017-01-04 | 深圳光启创新技术有限公司 | Wave filter and tuning dish thereof |
| WO2017096536A1 (en) * | 2015-12-08 | 2017-06-15 | 华为技术有限公司 | Resonant cavity and filter |
| CN108155452A (en) * | 2017-11-08 | 2018-06-12 | 安徽华东光电技术研究所 | A kind of assembling and setting device and method for microwave coaxial medium oscillating circuit |
| CN109411852A (en) * | 2018-09-04 | 2019-03-01 | 香港凡谷發展有限公司 | Cavity high-Q three-mode dielectric resonance structure and filter comprising same |
| CN110021804A (en) * | 2019-03-28 | 2019-07-16 | 摩比天线技术（深圳）有限公司 | Simple resonant rod drop frequency structure and its filter |
| CN110148822A (en) * | 2019-06-20 | 2019-08-20 | 东莞鸿爱斯通信科技有限公司 | A kind of tuning block and cavity body filter for cavity body filter |
| CN110299594A (en) * | 2018-03-22 | 2019-10-01 | 上海华为技术有限公司 | Dual-mode resonator, filter and radio frequency unit |
| CN113098418A (en) * | 2021-04-06 | 2021-07-09 | 电子科技大学 | Wireless sensing-oriented micro disc resonator and processing method thereof |
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| EP0961338A1 (en) * | 1998-05-27 | 1999-12-01 | Ace Technology | Bandpass filter with dielectric resonators |
| CN1949585A (en) * | 2006-10-27 | 2007-04-18 | 镇江蓝宝石电子实业有限公司 | RF centre frequency adjustable filer |
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| CN101630768A (en) * | 2009-08-11 | 2010-01-20 | 京信通信系统（中国）有限公司 | Cavity medium filter |
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2011
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Patent Citations (4)
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| EP0961338A1 (en) * | 1998-05-27 | 1999-12-01 | Ace Technology | Bandpass filter with dielectric resonators |
| CN1949585A (en) * | 2006-10-27 | 2007-04-18 | 镇江蓝宝石电子实业有限公司 | RF centre frequency adjustable filer |
| CN201298583Y (en) * | 2008-11-24 | 2009-08-26 | 丹东华讯电子有限公司 | Cavity filter for mobile communication network |
| CN101630768A (en) * | 2009-08-11 | 2010-01-20 | 京信通信系统（中国）有限公司 | Cavity medium filter |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296344A (en) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | Media of dielectric filter and connection method of media |
| CN103296372A (en) * | 2012-03-01 | 2013-09-11 | 深圳光启创新技术有限公司 | Resonance cavity |
| GB2500112B (en) * | 2012-03-05 | 2019-07-03 | Filtronic Wireless Ltd | A tuneable filter |
| US9490512B2 (en) | 2012-03-05 | 2016-11-08 | Filtronic Wireless Limited | Tuneable filter |
| GB2500112A (en) * | 2012-03-05 | 2013-09-11 | Filtronic Wireless Ltd | A tuneable filter with detuning arm |
| CN103311634A (en) * | 2012-03-15 | 2013-09-18 | 成都赛纳赛德科技有限公司 | Dielectric resonator tuning structure |
| EP2824759A1 (en) * | 2012-05-16 | 2015-01-14 | Huawei Technologies Co., Ltd | Filtering device |
| EP2824759A4 (en) * | 2012-05-16 | 2015-02-25 | Huawei Tech Co Ltd | Filtering device |
| US9472835B2 (en) | 2012-05-16 | 2016-10-18 | Huawei Technologies Co., Ltd. | Filtering apparatus |
| CN104201448A (en) * | 2014-09-10 | 2014-12-10 | 江苏贝孚德通讯科技股份有限公司 | Inductive coupling structure of dielectric filter |
| CN106299556A (en) * | 2015-05-27 | 2017-01-04 | 深圳光启创新技术有限公司 | Wave filter and tuning dish thereof |
| WO2017096536A1 (en) * | 2015-12-08 | 2017-06-15 | 华为技术有限公司 | Resonant cavity and filter |
| CN108155452A (en) * | 2017-11-08 | 2018-06-12 | 安徽华东光电技术研究所 | A kind of assembling and setting device and method for microwave coaxial medium oscillating circuit |
| CN108155452B (en) * | 2017-11-08 | 2019-08-20 | 安徽华东光电技术研究所 | A kind of assembling and setting device and method for microwave coaxial medium oscillating circuit |
| CN110299594A (en) * | 2018-03-22 | 2019-10-01 | 上海华为技术有限公司 | Dual-mode resonator, filter and radio frequency unit |
| CN110299594B (en) * | 2018-03-22 | 2021-08-31 | 上海华为技术有限公司 | Dual-mode resonator, filter and radio frequency unit |
| US11271279B2 (en) | 2018-03-22 | 2022-03-08 | Huawei Technologies Co., Ltd. | Dual-mode resonator, filter, and radio frequency unit |
| CN109411852A (en) * | 2018-09-04 | 2019-03-01 | 香港凡谷發展有限公司 | Cavity high-Q three-mode dielectric resonance structure and filter comprising same |
| US11942672B2 (en) | 2018-09-04 | 2024-03-26 | Hongkong Fingu Development Company Limited | Cavity high-Q triple-mode dielectric resonance structure and filter with resonance structure |
| CN110021804A (en) * | 2019-03-28 | 2019-07-16 | 摩比天线技术（深圳）有限公司 | Simple resonant rod drop frequency structure and its filter |
| CN110148822A (en) * | 2019-06-20 | 2019-08-20 | 东莞鸿爱斯通信科技有限公司 | A kind of tuning block and cavity body filter for cavity body filter |
| CN113098418A (en) * | 2021-04-06 | 2021-07-09 | 电子科技大学 | Wireless sensing-oriented micro disc resonator and processing method thereof |
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Application publication date: 20120118 |