CN203932263U - A kind of ultra-wide band filter based on T font open circuit minor matters - Google Patents
A kind of ultra-wide band filter based on T font open circuit minor matters Download PDFInfo
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- CN203932263U CN203932263U CN201320764138.XU CN201320764138U CN203932263U CN 203932263 U CN203932263 U CN 203932263U CN 201320764138 U CN201320764138 U CN 201320764138U CN 203932263 U CN203932263 U CN 203932263U
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Abstract
The utility model discloses a kind of simple in structure, volume is small and exquisite, a kind of ultra-wide band filter based on T font open circuit minor matters with good skirt selectivity and inhibition co-channel interference, its composition comprises: medium substrate (1), transmission coupling line (2), multimode resonator (3), T font open circuit minor matters (4), rectangular channel (5), ground plane (6).Described multimode resonator, coupled transmission line, T font open circuit minor matters are all printed on medium substrate upper surface, and described T font open circuit minor matters are positioned at resonator top, and coupled transmission line adopts toe type coupled structure.Rectangular channel, ground plane are printed on the medium substrate back side, and two rectangular channels are symmetrical about central shaft.The utility model compact conformation, compact size, by adjusting open a way minor matters size and position, capable of regulating trap frequency, solves the problem of co-channel interference in ultra-wideband communication system.
Description
Technical field
The utility model relates to a kind of filter, a kind of ultra-wide band filter based on T font open circuit minor matters of specific design, and this filter has good broadband character, well omnidirectional radiation characteristic and have trap characteristic in 3.1～10.6 frequency ranges.By the design of ultra broadband and T font open circuit minor matters are combined, thereby realize the compatible communication performance of ultra broadband (UWB) system and narrowband systems.
Background technology
Along with the develop rapidly of wireless communication technology and radio multimedium business, ultra broadband (UWB) technology receives more and more researchers' concern.Ultra broadband, with advantages such as its two-forty, low-power consumption, high security and antijamming capability are strong, has boundless application prospect and quite huge market value.Due to the potential tempting application prospect of super-broadband tech, US Federal Communication Committee (FCC) has ratified the application of super-broadband tech in short-distance wireless communication field in February, 2002, this has opened gate for the commercial applications of super-broadband tech product, has promoted radio ultra wide band system and device progress of research thereof.As one of Primary Component of radio-frequency front-end, the quality of ultra-wide band filter performance directly affects the quality of whole communication system.In order to adapt to the requirement of microwave integrated circuit miniaturization, filter not only wants performance good, and wants that volume is little, compact conformation, is convenient to integrated and interconnected.Radio frequency low side major part is used in Modern wireless communication, so FCC has quite strict requirement to the use of low frequency end.This requires radio ultra wide band system to outside being with, and especially low-frequency range is had to good inhibition.So just need a high performance ultra-wide band filter that bandwidth is strictly limited in the scope of FCC regulation.So it is good to design a skirt selectivity, it is one of key overcoming the above problems that harmonic wave is suppressed to higher ultra-wide band filter.
Yet, owing to there being the conflict of WLAN (wireless local area network) (WLAN), broadband intercommunication microwave access (WIMAX) frequency range in ultra broadband band limits, how solving co-channel interference becomes the important content of UWB research, so suppress the key that co-channel interference becomes design ultra-wide band filter.Traditional implementation method of the many passbands of UWB filter is by the cascade of a plurality of filters, but can cause like this volume to increase, and cost also increases simultaneously, and the mismatch between unit also can reduce the efficiency of system.So project organization is simple, skirt selectivity is good, and the ultra-wide band filter that suppresses co-channel interference has great importance.
Utility model content
The purpose of this utility model is to provide a kind of simple in structure, and volume is small and exquisite, has a kind of ultra-wide band filter based on T font open circuit minor matters of good skirt selectivity and inhibition co-channel interference, can be used in radio-frequency devices front end, realizes good communication performance.
Technical scheme described in the utility model is:
A kind of ultra-wide band filter based on T font open circuit minor matters, it is characterized in that: comprise medium substrate (1), transmission coupling line (2), multimode resonator (3), T font open circuit minor matters (4), rectangular channel (5), ground plane (6), described transmission coupling line (2), multimode resonator (3), T font open circuit minor matters (4) are on medium substrate surface, and described rectangular channel (5), ground plane (6) are printed on the back side of medium substrate (1).
A ultra-wide band filter based on T font open circuit minor matters, is characterized in that: multimode resonator (3) is comprised of the open circuit counterfoil of two bendings, forms one group of toe electric capacity, and its size dimension equates.
A ultra-wide band filter based on T font open circuit minor matters, is characterized in that: multimode resonator (3) top loads open circuit minor matters, and open circuit minor matters are T font, and T font open circuit minor matters below is connected with multimode resonator (3).
A ultra-wide band filter based on T font open circuit minor matters, is characterized in that: transmission coupling line (2) adopts toe type coupled structure, and transmission line intersects to form coupled structure mutually, is connected with 50 ohm transmission line.
A ultra-wide band filter based on T font open circuit minor matters, is characterized in that: ground plane (6) is opened rectangular channel (5), is positioned at transmission coupling line (2) below, and the physical dimension of two rectangular channels equates.
Concrete structure:
(1) the utility model by loading toe electric capacity on transmission line, and ground plane is opened rectangular channel, well realizes ultra broadband filtering performance, has good skirt selectivity.
(2) coupled transmission line of the present utility model adopts toe coupling, and the spacing between coupling line has determined stiffness of coupling, determines the bandwidth of filter.
(3) the T font open circuit minor matters that load above resonator structure described in the utility model, by the open a way adjusted size trap frequency position of minor matters of adjustings, realize ultra-wideband communications and disturb mutually the compatible communication for coordination of communication system.
(4) the utility model filter single layer printed circuit plate technique can realize, and simple and compact for structure, volume is small and exquisite, easy to process, and cost is low, is convenient to batch production.
Accompanying drawing explanation
Fig. 1 is front elevation of the present utility model;
Fig. 2 is side view of the present utility model;
Embodiment
Filter examples:
As shown in Figure 1, a kind of ultra-wide band filter based on T font open circuit minor matters with trap characteristic, its composition comprises: medium substrate (1), transmission coupling line (2), multimode resonator (3), T font open circuit minor matters (4), rectangular channel (5), ground plane (6).Described multimode resonator, coupled transmission line, T font open circuit minor matters are all printed on medium substrate upper surface, and described T font open circuit minor matters are positioned at resonator top, and coupled transmission line adopts toe type coupled structure.Rectangular channel, ground plane are printed on the medium substrate back side, and two rectangular channels are symmetrical about central shaft.
Described medium substrate is polytetrafluoroethylene material, thickness 0.8mm, and relative dielectric constant is 2.55.
Described multimode resonator forms toe electric capacity by loading two open circuit minor matters, in the acting in conjunction of coupled transmission line, rectangular channel, makes full use of the characteristic that presents a plurality of modes of resonance in passband, realizes multi-mode filter and has many passbands ultra wideband.
Described center, multimode resonator top loads T font open circuit minor matters, is closely connected with multimode resonator, realizes trap function, suppresses homogenous frequency signal and disturbs.
Described coupled transmission line consists of toe coupled structure, and toe coupled structure is connected and composed by three parallel coupling feed and 50 ohm of feed port that are placed to toe type.
A kind of ultra-wide band filter based on T font open circuit counterfoil, this filter is mainly comprised of multimode resonator, T font open circuit minor matters, its impedance bandwidth can cover 3.1-10.6GHz, meet the demand of ultra-wideband communications, in passband, can produce a trap, effectively suppress the interference of homogenous frequency signal, mainly contain the contribution of T font open circuit minor matters.
Claims (4)
1. the ultra-wide band filter based on T font open circuit minor matters, it is characterized in that: comprise medium substrate (1), transmission coupling line (2), multimode resonator (3), T font open circuit minor matters (4), rectangular channel (5), ground plane (6), described transmission coupling line (2), multimode resonator (3), T font open circuit minor matters (4) are on medium substrate surface, and described rectangular channel (5), ground plane (6) are printed on the back side of medium substrate (1); Multimode resonator (3) is comprised of the open circuit counterfoil of two bendings, forms one group of toe electric capacity, and its size dimension equates.
2. a kind of ultra-wide band filter based on T font open circuit minor matters according to claim 1, it is characterized in that: multimode resonator (3) top loads open circuit minor matters, open circuit minor matters are T font, and T font open circuit minor matters below is connected with multimode resonator (3).
3. a kind of ultra-wide band filter based on T font open circuit minor matters according to claim 1, is characterized in that: transmission coupling line (2) adopts toe type coupled structure, and transmission line intersects to form coupled structure mutually, is connected with 50 ohm transmission line.
4. a kind of ultra-wide band filter based on T font open circuit minor matters according to claim 1, is characterized in that: ground plane (6) is opened rectangular channel (5), and be positioned at transmission coupling line (2) below, the physical dimension of two rectangular channels equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320764138.XU CN203932263U (en) | 2013-11-27 | 2013-11-27 | A kind of ultra-wide band filter based on T font open circuit minor matters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320764138.XU CN203932263U (en) | 2013-11-27 | 2013-11-27 | A kind of ultra-wide band filter based on T font open circuit minor matters |
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| Publication Number | Publication Date |
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| CN203932263U true CN203932263U (en) | 2014-11-05 |
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| CN201320764138.XU Expired - Fee Related CN203932263U (en) | 2013-11-27 | 2013-11-27 | A kind of ultra-wide band filter based on T font open circuit minor matters |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070990A (en) * | 2015-08-13 | 2015-11-18 | 电子科技大学 | Micro-strip ultra wide band band-pass filter based on novel multimode resonator which is shaped like a Chinese character wang |
| CN106876842A (en) * | 2015-12-13 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading |
| CN106876847A (en) * | 2017-01-18 | 2017-06-20 | 南京邮电大学 | Broadband band-pass filter based on interdigital coupled resonators |
| CN109638394A (en) * | 2018-11-01 | 2019-04-16 | 深圳华中科技大学研究院 | A kind of chip-scale millimeter wave multi-pass band bandpass filter based on multimode resonator |
| CN110600842A (en) * | 2019-10-21 | 2019-12-20 | 合肥师范学院 | Four-frequency-band microstrip band-pass filter with trapped wave characteristic and design method thereof |
| CN110707401A (en) * | 2019-09-27 | 2020-01-17 | 南京邮电大学 | Coupling line loading low-pass or band-stop filter with reconfigurable transmission response |
| CN112736426A (en) * | 2020-12-23 | 2021-04-30 | 西安交通大学 | Broadband dielectric resonator filter antenna based on multimode resonator |
-
2013
- 2013-11-27 CN CN201320764138.XU patent/CN203932263U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070990A (en) * | 2015-08-13 | 2015-11-18 | 电子科技大学 | Micro-strip ultra wide band band-pass filter based on novel multimode resonator which is shaped like a Chinese character wang |
| CN105070990B (en) * | 2015-08-13 | 2018-03-09 | 电子科技大学 | A kind of micro band superwide band bandpass filter based on new king's font multimode resonator |
| CN106876842A (en) * | 2015-12-13 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading |
| CN106876847A (en) * | 2017-01-18 | 2017-06-20 | 南京邮电大学 | Broadband band-pass filter based on interdigital coupled resonators |
| CN109638394A (en) * | 2018-11-01 | 2019-04-16 | 深圳华中科技大学研究院 | A kind of chip-scale millimeter wave multi-pass band bandpass filter based on multimode resonator |
| CN110707401A (en) * | 2019-09-27 | 2020-01-17 | 南京邮电大学 | Coupling line loading low-pass or band-stop filter with reconfigurable transmission response |
| CN110600842A (en) * | 2019-10-21 | 2019-12-20 | 合肥师范学院 | Four-frequency-band microstrip band-pass filter with trapped wave characteristic and design method thereof |
| CN112736426A (en) * | 2020-12-23 | 2021-04-30 | 西安交通大学 | Broadband dielectric resonator filter antenna based on multimode resonator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20151127 |