CN204130667U - A kind of half module substrate integrated wave guide two band filter - Google Patents
A kind of half module substrate integrated wave guide two band filter Download PDFInfo
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- CN204130667U CN204130667U CN201420383159.1U CN201420383159U CN204130667U CN 204130667 U CN204130667 U CN 204130667U CN 201420383159 U CN201420383159 U CN 201420383159U CN 204130667 U CN204130667 U CN 204130667U
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- short circuit
- resonant ring
- metal patch
- complementary openings
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Abstract
The utility model discloses a kind of half module substrate integrated wave guide two band filter based on complementary openings resonant ring and short circuit composite left-and-right-hand transmission line structure, this filter is made up of two resonators.Its key is: described two band filter comprises dielectric substrate, dielectric substrate is arranged metal patch and grounded metal paster, the complementary openings resonant ring structure of metal patch etching and short circuit composite right/left-handed transmission line.Metal patch is also provided with row's metal throuth hole, impedance matching unit, incoming feeder and output feed line.Described complementary openings resonant ring structure is etched on metal patch, and this structure produces first passband, produces a transmission zero simultaneously; Short circuit composite left-and-right-hand line transmission line produces second passband and a transmission zero, and two transmission zeros introduced by this filter, and Out-of-band rejection is improved, and improves passband selectivity; Adopt the feeding classification of conical gradual change, improve external sort factor.
Description
Technical field
The utility model relates to a kind of filter being applied in wireless communication system, especially relates to half module substrate integrated wave guide two band filter.
Background technology
Along with the development of radio communication, the continuous increase of communication equipment, the limited frequency spectrum resource of efficiency utilization becomes a focus of current Development of Wireless Communications.Structurally design has small size, low cost, flexible design and the high active demand becoming radio-frequency filter of selectivity.In order to cost-saving, some devices in communication system can work in multiple frequency range simultaneously, and such device has huge prospect.And half-modular substrate integral wave guide filter has absolute predominance in low cost.
Filter is the indispensable component units of communication equipment, and its performance quality directly affects whole system.Therefore, high q-factor little, lightweight in the urgent need to high-performance, volume, low-loss, low cost, filter easy of integration.
Half module substrate integrated wave guide etches the two band filter of complementary openings resonant ring and the design of short circuit composite left-and-right-hand transmission line structure, achieves filter and there is small size, high-performance, high q-factor, low-loss, low cost, advantage easy of integration.
Utility model content
Main purpose of the present utility model is to provide a kind of half module substrate integrated wave guide two band filter based on complementary openings resonant ring and short circuit composite left-and-right-hand transmission line structure; its overall dimensions is little, separate between passband, can realize on the basis of existing technique.
The purpose of this utility model is realized by following technical scheme:
A kind of half module substrate integrated wave guide two band filter based on complementary openings resonant ring and short circuit composite left-and-right-hand transmission line structure; described two band filter comprises dielectric substrate; dielectric substrate is arranged metal patch, grounded metal paster, metal patch is etched with complementary openings resonant ring structure and short circuit composite right/left-handed transmission line.The cascade of two short circuit composite right/left-handed transmission lines, one end is connected with metal patch, and the other end is connected with grounded metal paster by plated-through hole; Metal patch edge is provided with row's metal throuth hole, load incoming feeder on metal patch both sides respectively and export feed line, incoming feeder is connected with metal patch respectively by impedance matching unit with output feed line, and described incoming feeder, output feed line are at the upper surface of dielectric substrate; Described complementary openings resonant ring Structure composing resonator A, two short circuit composite right/left-handed transmission lines of connection level form resonator B by coupling, and these two resonators form two band filter, and entirety is axially symmetric structure.
Adopt above structure, the metal patch of dielectric substrate etches complementary openings resonant ring and produces first passband, produce a transmission zero simultaneously; On-chip short circuit composite right/left-handed transmission line produces second passband and a transmission zero, and this filter introduces two transmission zeros, and Out-of-band rejection is improved, and improves passband selectivity;
The structure of described complementary openings resonant ring is made up of gap, periphery and inner circumferential gap, and the opening in two weeks gaps is contrary, the centre frequency of the length in gap, periphery and width control system first passband of metal; The frequency of the width control system transmission zero in gap, periphery and inner circumferential gap, improves the selectivity of its passband.
Described short circuit composite right/left-handed transmission line and metal patch while be connected, this filter connection level two short circuit composite right/left-handed transmission lines, form resonator by coupling, produce a resonance frequency and transmission zero.The metallization via hole that short circuit compound left and right transmission line comprises 4 interdigital, folding short-circuit lines and is connected to the ground.Interdigital length, width, the width in interdigital gap, the performance of diameter control filter second passband of the length of shorting stub, width and metallic vias.
Described impedance matching unit is cone shaped microstrip transition line, one end of impedance matching unit and incoming feeder or exports feed line and be connected, and the other end is for being connected with half module substrate integrated wave guide.The field structure that the electric field structure that transition line is supported and half module substrate integrated wave guide transmit main mould has a kind of naturally similitude, one section of cone shaped microstrip transition line can realize half module substrate integrated wave guide and 50 Ω input, export patten transformation, impedance transformation between microstrip line.
Compared with prior art, tool has the following advantages and beneficial effect the utility model:
1, the utility model utilizes complementary openings resonant ring structure and composite left-and-right-hand transmission line structure, such that circuit integrity size is little, compact conformation, space availability ratio are high; Two passbands are controlled by two resonators respectively, and between two passbands, interference is little mutually.
2, the utility model introduces two transmission zeros, and improve the selectivity of two passbands of filter, Out-of-band rejection improves.
3, adopt the mode feed of conical gradual change in the utility model, effectively can improve external sort factor Q.
Accompanying drawing explanation
Fig. 1 is the structural representation of half module substrate integrated wave guide two band filter described in the utility model;
Fig. 2 is the structural representation of complementary openings resonant ring (2) in Fig. 1;
Fig. 3 is the structural representation of short circuit composite right/left-handed transmission line (3) in Fig. 1;
Fig. 4 is the frequency response curve of a half module substrate integrated wave guide two band filter described in the utility model example.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
As shown in Figure 1 to Figure 3, a kind of half module substrate integrated wave guide two band filter based on complementary openings resonant ring and short circuit composite left-and-right-hand transmission line structure, it comprises dielectric substrate; in the present embodiment; dielectric substrate adopts Rogers 5880, and dielectric constant is 2.2, and thickness is 0.508mm.Dielectric substrate is arranged metal patch 1 (a) and grounded metal paster 1 (b).Metal patch 1 (a) is etched with complementary openings resonant ring structure 2 and short circuit composite right/left-handed transmission line 3.
Two short circuit composite right/left-handed transmission lines 3
cascade,one end is connected with metal patch 1 (a), and the other end is connected with grounded metal paster 1 (b) by plated-through hole.
on metal patch 1 (a) edgebe provided with row's metal throuth hole 4,
load incoming feeder 6 on metal patch 1 (a) both sides respectively and export feed line 7, incoming feeder 6 is connected with metal patch 1 (a) respectively by impedance matching unit 5 with output feed line 7,incoming feeder 6, output feed line 7 are at the upper surface of dielectric substrate.
The complementary openings resonant ring structure 2 of the upper etching of metal patch 1 (a) is made up of gap, periphery 2-1 and inner circumferential gap 2-2; Metal width between two gaps is 0.25mm, and the wide of gap, periphery 2-1 and inner circumferential gap 2-2 is 0.25mm, and the length of gap, periphery 2-1 is 24.75mm, and the length of inner circumferential gap 2-2 is 20.75mm,
the aperture slots metal 2-3 of gap, periphery 2-1wide be 0.25mm.
The short circuit composite right/left-handed transmission line 3 of the upper etching of metal patch 1 (a) is made up of microstrip line, there are four interdigital 3-1, long is 8.1mm, wide is 0.2mm, the gap 3-2 of interdigital is 0.1mm, and folding the wide of shorting stub 3-3 is 0.2mm, and the diameter of the metallization via hole 3-4 be connected to the ground is 0.8mm, distance between two metallization via holes is 1.4mm, and the shorting stub 3-3 in two short circuit composite right/left-handed transmission lines is at a distance of 0.4mm.
Above complementary openings resonant ring structure 2 forms resonator A, and two short circuit composite right/left-handed transmission lines 3 of connection level form resonator B by coupling, and these two resonators form two band filter, and entirety is axially symmetric structure.
As shown in Figure 4, be the frequency response curve of this example.Figure comprises two large curve ︱ S
21︱, ︱ S
11︱, curve ︱ S
21︱ is the transfer curve of signal, curve ︱ S
11︱ is the coverage diagram of port.As seen from the figure, this filter has biobelt passband response, and the centre frequency of one of them passband is 2.25GHz, minimum Insertion Loss 0.78dB in passband, and return loss is greater than 21dB, and its passband three dB bandwidth is 8.9%; The centre frequency of the second passband is 3GHz, and in passband, minimum insertion loss is 0.805dB, and in passband, return loss is greater than 33.46dB, and its passband 3dB broadband is 6.7%; The wide-band ratio of first and second passband is approximately 1:1; Two transmission zeros are respectively at 2.64GHz, 3.48GHz, and Out-of-band rejection reaches more than 30, the effective selectivity improving half module substrate integrated wave guide two band filter passband based on complementary openings resonant ring and short circuit composite left-and-right-hand transmission line structure.
Relatively existing technology, the utility model is a kind of half module substrate integrated wave guide two band filter based on complementary openings resonant ring and short circuit composite left-and-right-hand transmission line structure, and two passband is controlled by different resonators respectively.Out-of-band rejection and the selectivity of filter is improved by introducing two transmission zeros.Application compound left and right transmission line structure, can effectively reduce filter volume, adopt the gradual change feed microstrip line mode of taper, can improve external sort factor.
Execution mode of the present utility model is not subject to the restriction of above-described embodiment, other any do not deviate from Spirit Essence of the present utility model with do under principle be equal to replacement or change, all comprise within protection range of the present utility model.
Claims (5)
1. the half module substrate integrated wave guide two band filter based on complementary openings resonant ring and short circuit composite left-and-right-hand transmission line structure, its characteristic is: described two band filter comprises dielectric substrate, dielectric substrate is arranged metal patch (1 (a)) and grounded metal paster (1 (b)), metal patch (1 (a)) is etched with complementary openings resonant ring structure (2) and two short circuit composite right/left-handed transmission lines (3), the cascade of two short circuit composite right/left-handed transmission lines (3), one end is connected with metal patch (1 (a)), the other end is connected with grounded metal paster (1 (b)) by plated-through hole, metal patch (1 (a)) edge is provided with row's metal throuth hole (4), load 50 ohm of incoming feeders (6) on the both sides of metal patch (1 (a)) respectively and export feed line (7), metal patch (1 (a)) is drawn 50 ohm of incoming feeders (6) by impedance matching unit (5) and is exported feed line (7), and described incoming feeder (6), output feed line (7) are at the upper surface of dielectric substrate, described complementary openings resonant ring structure (2) forms resonator A, and two short circuit composite right/left-handed transmission lines (3) of connection level form resonator B by coupling, and these two resonators form two band filter, and entirety is axially symmetric structure.
2. the half module substrate integrated wave guide two band filter based on complementary openings resonant ring and short circuit composite left-and-right-hand transmission line structure according to claim 1; it is characterized in that: described complementary openings resonant ring structure (2) comprises gap, periphery (2-1) and inner circumferential gap (2-2), and their opening direction is contrary.
3. the half module substrate integrated wave guide two band filter based on complementary openings resonant ring and short circuit composite left-and-right-hand transmission line structure according to claim 1 and 2, is characterized in that: the metallization via hole (3-4) that described composite right/left-handed transmission line (3) comprises 4 interdigital (3-1), folding short-circuit line (3-3) and is connected to the ground.
4. the half module substrate integrated wave guide two band filter based on complementary openings resonant ring and short circuit composite left-and-right-hand transmission line structure according to claim 3; it is characterized in that: described impedance matching unit (5) is cone shaped microstrip transition line; one end of impedance matching unit (5) and incoming feeder (6) or export feed line (7) and be connected, the other end is used for being connected with metal patch (1 (a)).
5. the half module substrate integrated wave guide two band filter based on complementary openings resonant ring and short circuit composite left-and-right-hand transmission line structure according to claim 4, is characterized in that: dielectric substrate described in this filter adopts Rogess 5880.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420383159.1U CN204130667U (en) | 2014-07-11 | 2014-07-11 | A kind of half module substrate integrated wave guide two band filter |
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| CN201420383159.1U CN204130667U (en) | 2014-07-11 | 2014-07-11 | A kind of half module substrate integrated wave guide two band filter |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789786A (en) * | 2016-03-29 | 2016-07-20 | 西南大学 | Low-insertion-loss broadband filter based on SIW (substrate integrated waveguide) complementary open resonant rings |
| CN106549200A (en) * | 2016-06-04 | 2017-03-29 | 南京理工大学 | Miniaturization Double-band-pass microstrip filter based on right-hand man's structure |
| CN106549199A (en) * | 2016-06-04 | 2017-03-29 | 南京理工大学 | Miniaturisation high-performance microstrip wave filter based on right-hand man's structure |
| CN107508038A (en) * | 2017-07-13 | 2017-12-22 | 中国人民解放军空军工程大学 | Work in the double-frequency micro-strip antenna battle array and its design method of C-band and X-band |
| CN107565195A (en) * | 2017-08-21 | 2018-01-09 | 成都艺馨达科技有限公司 | Microwave filter |
| CN109244611A (en) * | 2018-08-30 | 2019-01-18 | 成都频岢微电子有限公司 | A kind of adjustable substrate integral wave guide filter of miniaturization |
| CN110531166A (en) * | 2019-09-10 | 2019-12-03 | 河南师范大学 | A kind of broadband microfluid dielectric property test device of metamaterial structure load |
| CN117907349A (en) * | 2024-03-19 | 2024-04-19 | 成都信息工程大学 | Portable material micro defect radio frequency detection system and detection method |
-
2014
- 2014-07-11 CN CN201420383159.1U patent/CN204130667U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789786A (en) * | 2016-03-29 | 2016-07-20 | 西南大学 | Low-insertion-loss broadband filter based on SIW (substrate integrated waveguide) complementary open resonant rings |
| CN105789786B (en) * | 2016-03-29 | 2018-05-04 | 西南大学 | Filter with low insertion loss broadband filter based on substrate integration wave-guide complementary openings resonant ring |
| CN106549200A (en) * | 2016-06-04 | 2017-03-29 | 南京理工大学 | Miniaturization Double-band-pass microstrip filter based on right-hand man's structure |
| CN106549199A (en) * | 2016-06-04 | 2017-03-29 | 南京理工大学 | Miniaturisation high-performance microstrip wave filter based on right-hand man's structure |
| CN106549200B (en) * | 2016-06-04 | 2019-08-09 | 南京理工大学 | Miniaturization Double-band-pass microstrip filter based on right-hand man's structure |
| CN107508038A (en) * | 2017-07-13 | 2017-12-22 | 中国人民解放军空军工程大学 | Work in the double-frequency micro-strip antenna battle array and its design method of C-band and X-band |
| CN107565195A (en) * | 2017-08-21 | 2018-01-09 | 成都艺馨达科技有限公司 | Microwave filter |
| CN109244611A (en) * | 2018-08-30 | 2019-01-18 | 成都频岢微电子有限公司 | A kind of adjustable substrate integral wave guide filter of miniaturization |
| CN109244611B (en) * | 2018-08-30 | 2020-07-07 | 成都频岢微电子有限公司 | Miniaturized adjustable substrate integrated waveguide filter |
| CN110531166A (en) * | 2019-09-10 | 2019-12-03 | 河南师范大学 | A kind of broadband microfluid dielectric property test device of metamaterial structure load |
| CN117907349A (en) * | 2024-03-19 | 2024-04-19 | 成都信息工程大学 | Portable material micro defect radio frequency detection system and detection method |
| CN117907349B (en) * | 2024-03-19 | 2024-05-24 | 成都信息工程大学 | Portable material micro defect radio frequency detection system and detection method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20210711 |