CN203707287U - Source and multiple resonators-coupled substrate integrated waveguide filter - Google Patents
Source and multiple resonators-coupled substrate integrated waveguide filter Download PDFInfo
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- CN203707287U CN203707287U CN201420083602.3U CN201420083602U CN203707287U CN 203707287 U CN203707287 U CN 203707287U CN 201420083602 U CN201420083602 U CN 201420083602U CN 203707287 U CN203707287 U CN 203707287U
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Abstract
The utility model discloses a source and multiple resonators-coupled substrate integrated waveguide filter. The source and multiple resonators-coupled substrate integrated waveguide filter includes a dielectric substrate of which the upper surface and the lower surface are both provided with a metal layer; the upper part of the dielectric substrate is provided with a first waveguide cavity, and the lower part of the dielectric substrate is provided with a substrate integrated waveguide representing a source and a second waveguide cavity, wherein the first waveguide cavity, the substrate integrated waveguide and the second waveguide cavity can achieve energy coupling through a first metal column inductive window, a second metal column inductive window and a third metal column inductive window, and the substrate integrated waveguide and the second waveguide cavity can achieve electric coupling through an interdigital slot structure. According to the source and multiple resonators-coupled substrate integrated waveguide filter of the utility model, one resonator of a trisection filter is replaced by the source, such that one substrate integrated waveguide cavity can be decreased. With the source and multiple resonators-coupled substrate integrated waveguide filter adopted, a transmission zero point can be realized, and another transmission zero point is introduced through a hybrid coupling mode, and therefore, two transmission zero points can be realized. The source and multiple resonators-coupled substrate integrated waveguide filter is advantageous in small insertion loss. According to the source and multiple resonators-coupled substrate integrated waveguide filter, source and multi-resonator coupling theories and hybrid coupling technologies are adopted, and therefore, the source and multiple resonators-coupled substrate integrated waveguide filter is further advantageous in smaller size and smaller loss compared with a traditional filter.
Description
Technical field
The utility model relates to a kind of integral wave guide filter, relates in particular to the substrate integral wave guide filter of a provenance and multi-resmator coupling.
Background technology
Microwave in a certain particular range almost undamped or decay passes through filter tinily, and at this frequency microwave in addition, filter has very strong reflection or absorption to it, thereby almost cannot pass through filter.The quality of performance of filter is determining the quality of whole system communication quality.Early stage microwave circuit, mainly take metal waveguide as representative, can form filter by metal-loaded bar in waveguide.Filter power capacity based on metal waveguide is high, and loss is low, excellent performance, but processing cost is high, and be not suitable for modern planar circuit integrated.The appearance of microstrip circuit is significant to the development of microwave and millimeter wave circuit.The advantage of microstrip circuit mainly contains: volume is little, lightweight, compact conformation.But along with the rising of frequency, the shortcoming of microstrip circuit also comes out gradually, mainly contains: radiation and leakage become large, the Q value step-down of circuit, insertion loss is large.Because waveguide and micro-band have its unsurmountable shortcoming, people have to develop new microwave technology.Substrate integration wave-guide (SIW) is a kind of novel waveguide structure proposing recent years, its basic structure is that upper bottom surface is metal level, centre is low loss dielectric substrate, then on medium, add two row's plated-through holes, so just can on dielectric substrate, realize traditional metal waveguide transmission characteristic.Substrate integration wave-guide combines the advantage of micro-band and waveguide to a certain extent, is keeping conventional filter high power capacity, when low-loss advantage, has also retained general closed planar line filter and has been easy to integratedly, lightweight, is easy to the advantages such as processing.Because frequency spectrum resource is limited, Modern Communication System has proposed more and more higher requirement to the selectivity of filter.Conventional method is to produce transmission zero by the cross-couplings of multiple independently resonant cavitys.But the method design is complicated, and filter volume is also bigger than normal.
Prior art utilizes the cross-couplings of three resonators to realize a transmission zero, needs four resonant cavitys and realize two transmission zeros, and it is more difficult that such filter implements, and filter volume is larger, and loss is higher.
Summary of the invention
The purpose of this utility model is just to provide one to address the above problem, and only needs two resonant cavitys just can realize the source of two transmission zeros and the substrate integral wave guide filter of multi-resmator coupling.
To achieve these goals, the technical solution adopted in the utility model is such: the substrate integral wave guide filter of a provenance and multi-resmator coupling, comprise that upper and lower surface is equipped with the dielectric substrate of metal level, described dielectric substrate is rectangle, top is provided with first wave guide cavity, bottom is from left to right provided with substrate integration wave-guide and second wave-guide cavity wave that represents source successively, and described first wave guide cavity and the second wave-guide cavity wave are all operated in TE
101pattern, between described first wave guide cavity and substrate integration wave-guide, be provided with the first metal column perception window, with the second wave-guide cavity wave between be provided with the perceptual window of the second metal column, between described substrate integration wave-guide and the second wave-guide cavity wave, be provided with the 3rd metal column perception window, and in the 3rd metal column perception window, be provided with interdigital type groove structure, substrate integration wave-guide and the second wave-guide cavity wave mutually away from one end be respectively equipped with co-planar waveguide input and co-planar waveguide output.
As preferably: described substrate integration wave-guide, first wave guide cavity and the second wave-guide cavity wave form by the plated-through hole array that runs through metal level and dielectric substrate.
As preferably: described dielectric substrate is Rogers5880, and dielectric constant is 2.2, thick 0.5 mm.
As preferably: in described plated-through hole array, the diameter of through hole is 0.5 mm, and the spacing between adjacent through-holes is 1 mm.
Compared with prior art, the utility model has the advantage of: a kind of second order filter with two transmission zeros is provided, and mainly based on substrate integrated waveguide technology, source and multi-resmator be coupling technique simultaneously, hybrid coupled technology is applicable to being applied to microwave and millimetre-wave circuit field very much.
The utility model, be equivalent to a resonator of common trisection filter to be replaced by source, this has just reduced by a substrate integrated wave-guide cavity wave, between substrate integration wave-guide, first wave guide cavity and this three of the second wave-guide cavity wave, first realize the coupling of energy by the first metal column perception window, the second metal column perception window and the 3rd metal column perception window, and represent between the substrate integration wave-guide in source and the second wave-guide cavity wave and also realize electric coupling by interdigital type groove structure, thereby realize hybrid coupled, from and introduce again a transmission zero.
The utlity model has less Insertion Loss, employing source and multi-resmator coupled wave theory and hybrid coupled technology, only use two cavitys just to realize two transmission zeros, and traditional cross-coupled filter is realized four cavitys of same performance need, thereby there is less volume than traditional filter, less loss.
Meanwhile, the utility model can produce two transmission zeros, has good selectivity, has also improved preferably attenuation outside a channel characteristic.
Finally, the utility model adopts single substrate integrated wave guide structure, make very simple, all utilize ripe standard industry technique, cost is low and precision is high, easily batch production, enclosed construction thereby radiation are little, isolation and antijamming capability are strong, easily integrated with active planar circuit, and this is a very large advantage for metal waveguide filter.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the cutaway view of Fig. 1;
Fig. 3 is transmission characteristic figure of the present utility model.
In figure: 1, dielectric substrate; 2, plated-through hole array; 31, first wave guide cavity; 32, the second wave-guide cavity wave; 4, substrate integration wave-guide; 51, the first metal column perception window; 52, the second metal column perception window; 53, the 3rd metal column perception window; 6, interdigital type groove structure; 71, co-planar waveguide input; 72, co-planar waveguide output; 8, metal level.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment 1: referring to Fig. 1, Fig. 2, the substrate integral wave guide filter of one provenance and multi-resmator coupling, comprise that upper and lower surface is equipped with the dielectric substrate 1 of metal level 8, described dielectric substrate 1 is rectangle, top is provided with first wave guide cavity 31, bottom is from left to right provided with substrate integration wave-guide 4 and second wave-guide cavity wave 32 that represents source successively, and described first wave guide cavity 31 and the second wave-guide cavity wave 32 are all operated in TE
101pattern, between described first wave guide cavity 31 and substrate integration wave-guide 4, be provided with the first metal column perception window 51, with the second wave-guide cavity wave 32 between be provided with the perceptual window 52 of the second metal column, between described substrate integration wave-guide 4 and the second wave-guide cavity wave 32, be provided with the 3rd metal column perception window 53, and in the 3rd metal column perception window 53, be provided with interdigital type groove structure 6, substrate integration wave-guide 4 and the second wave-guide cavity wave 32 mutually away from one end be respectively equipped with co-planar waveguide input 71 and co-planar waveguide output 72.
In the present embodiment, described substrate integration wave-guide 4, first wave guide cavity 31 and the second wave-guide cavity wave 32 form by the plated-through hole array 2 that runs through metal level 8 and dielectric substrate 1, described dielectric substrate 1 is Rogers5880, dielectric constant is 2.2, thick 0.5 mm, in described plated-through hole array 2, the diameter of through hole is 0.5 mm, and the spacing between adjacent through-holes is 1 mm.
The utility model is equivalent to a resonator of common trisection filter to be replaced by source, and this has just reduced by substrate integration wave-guide 4 cavitys, substrate integration wave-guide 4, first wave guide cavity 31 and second wave-guide cavity wave 32 these threes
betweenfirst realize the coupling of energy by the first metal column perception window 51, the second metal column perception window 52 and the 3rd metal column perception window 53, realize a transmission zero, and represent between the substrate integration wave-guide 4 in source and the second wave-guide cavity wave 32 and also realize electric coupling by interdigital type groove structure 6, thereby realize hybrid coupled, from and introduce again a transmission zero.
Between described first wave guide cavity 31 and substrate integration wave-guide 4, be provided with the first metal column perception window 51, with the second wave-guide cavity wave 32 between be provided with the perceptual window 52 of the second metal column, realize Energy Coupling by the first metal column perception window 51 and the second metal column perception window 52 respectively, between substrate integration wave-guide 4 and the second wave-guide cavity wave 32, be provided with the 3rd metal column perception window 53, the two realizes Energy Coupling by the 3rd metal column perception window 53, and above combination can provide a transmission zero.
Meanwhile, in the 3rd metal column perception window 53, be provided with interdigital type groove structure 6, between substrate integration wave-guide 4 and the second wave-guide cavity wave 32, can also realize electric coupling by interdigital type groove structure 6, from and introduce again a transmission zero.
The utility model utilizes source and the coupling of many wave-guide cavity waves and interdigital type groove structure 6 to realize hybrid coupled and produces transmission zero, has realized good frequency selectivity, and Out-of-band rejection is good, and in band, Insertion Loss is little, excellent performance, and design is also very convenient.
In the present embodiment, the transmission characteristic of filter emulation and actual measurement as shown in Figure 3.As we can see from the figure, actual measurement return loss is better than-12 dB, and in band, Insertion Loss is approximately 2.7 dB, this loss is to have comprised test splice, the impact of microstrip feed line and co-planar waveguide, and these losses are at Ku wave band or obvious, deduct this part loss, the loss meeting of filter is less.Test is very identical with simulation result, at the upper lower sideband of filter, can find two transmission zeros clearly, has improved well the selectivity of filter, has two limits in band, makes the passband of filter be tending towards smooth.
Claims (4)
1. the substrate integral wave guide filter of a provenance and multi-resmator coupling, comprise that upper and lower surface is equipped with the dielectric substrate of metal level, it is characterized in that: described dielectric substrate is rectangle, top is provided with first wave guide cavity, bottom is from left to right provided with substrate integration wave-guide and second wave-guide cavity wave that represents source successively, described first wave guide cavity and the second wave-guide cavity wave are all operated in TE101 pattern, between described first wave guide cavity and substrate integration wave-guide, be provided with the first metal column perception window, and between the second wave-guide cavity wave, be provided with the second metal column perception window, between described substrate integration wave-guide and the second wave-guide cavity wave, be provided with the 3rd metal column perception window, and be provided with interdigital type groove structure in the 3rd metal column perception window, substrate integration wave-guide and the second wave-guide cavity wave mutually away from one end be respectively equipped with co-planar waveguide input and co-planar waveguide output.
2. the substrate integral wave guide filter of source according to claim 1 and multi-resmator coupling, is characterized in that: described substrate integration wave-guide, first wave guide cavity and the second wave-guide cavity wave form by the plated-through hole array that runs through metal level and dielectric substrate.
3. the substrate integral wave guide filter of source according to claim 1 and multi-resmator coupling, is characterized in that: described dielectric substrate is Rogers5880, and dielectric constant is 2.2, thick 0.5 mm.
4. the substrate integral wave guide filter of source according to claim 2 and multi-resmator coupling, is characterized in that: in described plated-through hole array, the diameter of through hole is 0.5 mm, and the spacing between adjacent through-holes is 1 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420083602.3U CN203707287U (en) | 2014-02-26 | 2014-02-26 | Source and multiple resonators-coupled substrate integrated waveguide filter |
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| CN201420083602.3U CN203707287U (en) | 2014-02-26 | 2014-02-26 | Source and multiple resonators-coupled substrate integrated waveguide filter |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048037A (en) * | 2015-07-21 | 2015-11-11 | 南京航空航天大学 | Micro-strip bandpass filter for loading interdigital trough line structures based on substrate integrated waveguide (SIW) |
| CN105048041A (en) * | 2015-06-18 | 2015-11-11 | 中国船舶重工集团公司第七一九研究所 | Three-passband cross coupling substrate integration waveguide filter topology structure and filter |
| CN107069155A (en) * | 2017-01-12 | 2017-08-18 | 深圳三星通信技术研究有限公司 | A kind of dielectric waveguide filter and its coupling inversion structures |
| CN108134167A (en) * | 2017-12-25 | 2018-06-08 | 石家庄创天电子科技有限公司 | Substrate integral wave guide filter |
| CN108134166A (en) * | 2017-12-25 | 2018-06-08 | 石家庄创天电子科技有限公司 | Substrate integral wave guide filter and resonator |
| CN108428984A (en) * | 2018-03-15 | 2018-08-21 | 南京邮电大学 | The bandpass filter of resonant cavity is integrated based on right angled triangle substrate |
| CN108736112A (en) * | 2017-04-14 | 2018-11-02 | 上海诺基亚贝尔股份有限公司 | Microwave electric coupling structure and its implementation |
| CN110098476A (en) * | 2019-05-15 | 2019-08-06 | 成都电科慧安科技有限公司 | A kind of substrate integration wave-guide filter aperture antenna |
| CN110943274A (en) * | 2018-09-25 | 2020-03-31 | 西安邮电大学 | LCP-based SIW band-pass filter structure |
| CN111740192A (en) * | 2020-08-21 | 2020-10-02 | 成都频岢微电子有限公司 | Substrate integrated waveguide filter loaded by interdigital structure |
-
2014
- 2014-02-26 CN CN201420083602.3U patent/CN203707287U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048041A (en) * | 2015-06-18 | 2015-11-11 | 中国船舶重工集团公司第七一九研究所 | Three-passband cross coupling substrate integration waveguide filter topology structure and filter |
| CN105048037A (en) * | 2015-07-21 | 2015-11-11 | 南京航空航天大学 | Micro-strip bandpass filter for loading interdigital trough line structures based on substrate integrated waveguide (SIW) |
| CN107069155A (en) * | 2017-01-12 | 2017-08-18 | 深圳三星通信技术研究有限公司 | A kind of dielectric waveguide filter and its coupling inversion structures |
| CN107069155B (en) * | 2017-01-12 | 2019-07-30 | 深圳三星通信技术研究有限公司 | A kind of dielectric waveguide filter and its coupling inversion structures |
| CN108736112A (en) * | 2017-04-14 | 2018-11-02 | 上海诺基亚贝尔股份有限公司 | Microwave electric coupling structure and its implementation |
| CN108736112B (en) * | 2017-04-14 | 2020-07-24 | 上海诺基亚贝尔股份有限公司 | Microwave electric coupling structure and implementation method thereof |
| CN108134167A (en) * | 2017-12-25 | 2018-06-08 | 石家庄创天电子科技有限公司 | Substrate integral wave guide filter |
| CN108134167B (en) * | 2017-12-25 | 2020-02-28 | 石家庄创天电子科技有限公司 | Substrate integrated waveguide filter |
| CN108134166A (en) * | 2017-12-25 | 2018-06-08 | 石家庄创天电子科技有限公司 | Substrate integral wave guide filter and resonator |
| CN108428984A (en) * | 2018-03-15 | 2018-08-21 | 南京邮电大学 | The bandpass filter of resonant cavity is integrated based on right angled triangle substrate |
| CN110943274A (en) * | 2018-09-25 | 2020-03-31 | 西安邮电大学 | LCP-based SIW band-pass filter structure |
| CN110098476A (en) * | 2019-05-15 | 2019-08-06 | 成都电科慧安科技有限公司 | A kind of substrate integration wave-guide filter aperture antenna |
| CN111740192A (en) * | 2020-08-21 | 2020-10-02 | 成都频岢微电子有限公司 | Substrate integrated waveguide filter loaded by interdigital structure |
| CN111740192B (en) * | 2020-08-21 | 2020-12-04 | 成都频岢微电子有限公司 | Substrate integrated waveguide filter loaded by interdigital structure |
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