CN205231218U - Super broad band filter based on multimode resonance - Google Patents
Super broad band filter based on multimode resonance Download PDFInfo
- Publication number
- CN205231218U CN205231218U CN201521049528.4U CN201521049528U CN205231218U CN 205231218 U CN205231218 U CN 205231218U CN 201521049528 U CN201521049528 U CN 201521049528U CN 205231218 U CN205231218 U CN 205231218U
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- Prior art keywords
- ultra
- wide band
- band filter
- filter based
- open circuit
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Abstract
The utility model discloses a super broad band filter based on multimode resonance. Root structure (1), microstrip feeder structure (2) are deposited to this wave filter by opening a way, ground (5) of dielectric plate lower surface are constituteed. The utility model discloses the utilization is opened a way and is deposited the toe coupled structure realization ultra wide band that the transmission microstrip line in root structure and the microstrip feeder structure is constituteed. The utility model relates to a wave filter has very little return loss and insertion loss, good low frequency characteristic and harmonic inhibition. This filter design is simple, compact structure, appearance are pleasing to the eye, processing convenience, low cost, can realize 3.1~10.6GHz's ultra wide band.
Description
Technical field
The utility model relates to a kind of ultra-wide band filter based on multimode resonance, and this filter can realize the ultra broadband of 3.1 ~ 10.6GHz frequency range.
Background technology
UWB technology comes across late 1950s, until be all mainly used in the communication system of military radar and low intercepting and capturing rate the nineties in 20th century.In recent years, along with the development of microelectronic component technology and technique, UWB technology just started progressively to be applied in civil area.On February 14th, 2002, ultrawideband obtains the approval of FCC FCC first, can be used in short-distance wireless communication, this commercial applications being super-broadband tech product opens gate, facilitate radio ultra wide band system and device thereof as UWB filter, UWB antenna, the progress of research such as UWB amplifier.
Super-broadband tech field applicatory is very extensive, and for the ease of management, radio ultra wide band system is divided into 3 classes by FCC: imaging system, comprises ground-penetrating radar system, wall imaging system, wall penetrate imaging system, surveillance and medical imaging system; Vehicular radar system; Indoor ultra-broadband system
In recent years, along with the fast development of wireless communication technology and multimedia service, ultra broadband (UWB) technology is subject to people in the world and more and more payes attention to.UWB system is fast, low in energy consumption with its transmission speed, system is simple, strong security and antijamming capability is strong etc. that advantage is with a wide range of applications and huge market value.Meanwhile, it is also to we have proposed more challenge, because existing most communication systems are operated in same frequency range, mutual interference problem will have to consider.As one of the critical component of radio-frequency (RF) communication system, UWB filter will directly have influence on the performance of whole ultra-wideband communication system, and therefore, its performance quality is most important.
Radio frequency low side major part has been used in Modern wireless communication, and therefore the use of FCC to low frequency end has quite strict requirement.This requires that radio ultra wide band system is to outside band, especially has good suppression to low-frequency range.In so need a high performance ultra-wide band filter bandwidth to be strictly limited in scope that FCC specifies.So it is good to design a skirt selectivity, the ultra-wide band filter higher to harmonics restraint is one of key overcome the above problems.
Utility model content
It is little that the purpose of this utility model there are provided volume in, compact conformation, is convenient to integrated and interconnected ultra-wide band filter, and this filter can make the ultra broadband of acquisition have lower return loss and insertion loss, may be used for radio frequency network leading portion, realize good communication.
The technical scheme that the utility model adopts:
A kind of ultra-wide band filter based on multimode resonance, it is characterized in that, the open circuit counterfoil structure (1) of dielectric-slab upper surface, microstrip feed line structure (2), described open circuit counterfoil structure (1) are made up of the identical transmission microstrip line of four width and the rectangular patch that is carved with two rectangular channels and a dumbbell shape groove, and microstrip feed line structure (2) is made up of transmission microstrip line and the rectangular patch that is carved with U-lag.
Described a kind of ultra-wide band filter based on multimode resonance, is characterized in that, two rectangular channels on open circuit counterfoil structure (1) rectangular patch are symmetrical about dumbbell shape groove, and four transmission microstrip lines are symmetrical about rectangular patch.
Described a kind of ultra-wide band filter based on multimode resonance, it is characterized in that, four transmission coupling lines in open circuit counterfoil structure (1) and the microstrip feed line structure (2) on both sides, (3) the transmission microstrip line composition toe coupled structure in, and total presents symmetry.
Described a kind of ultra-wide band filter based on multimode resonance, is characterized in that, the microstrip feed line structure on both sides is symmetric about open circuit counterfoil structure (1).
This utility model filter has following characteristic and advantage relative to existing filter:
Simplicity of design, compact conformation, easy to process, with low cost, can ultra broadband be realized.
By transmitting the gap of microstrip line to produce the ultra broadband of 3.1-10.6GHz in adjustment toe coupled structure.
By regulating the size of flute profile in open circuit counterfoil structure, good low frequency characteristic and band external characteristic can be realized.
Accompanying drawing explanation
Fig. 1 is the basic structure vertical view of the utility model embodiment 1;
Fig. 2 is the basic structure end view of the utility model embodiment 1;
Embodiment
The utility model devises a kind of ultra-wide band filter based on multimode resonance, and this filter has wider passband, less return loss and insertion loss, good band external characteristic.
Specifically utility model is described in more detail below in conjunction with accompanying drawing:
An example of the present utility model as shown in Figure 1, medium substrate (4) to be dielectric constant be 4.9 FR-4.The thickness of this medium substrate is 1mm.Ground plate (5) under medium substrate adopts copper product.
As shown in Figure 1, the utility model is based on the ultra-wide band filter of multimode resonance, and the open circuit counterfoil structure (1) on medium substrate, the microstrip feed line structure (2) on both sides, (3) adopt copper product.
This utility model is based on the design parameter of the ultra-wide band filter of multimode resonance:
The selection of medium substrate: relative dielectric constant is the FR4 material of 4.9, FR4 material has that electrical insulation capability is stablized, evenness is good, smooth surface, feature without pit, thickness deviation standard, its excellent electrical properties, working temperature is higher, performance own is affected by environment little, be common used material, be convenient to make and industrial production.Microband paste on medium substrate and the metal ground plate under medium substrate all adopt copper product.
The design of multimode resonator: according to filter correlation theory, design meets the toe coupled structure resonant element of ultra-wideband communications.By transmitting the gap of microstrip line in adjustment toe coupled structure, producing mode of resonance, making the ultra broadband of generation have wider passband, less return loss and insertion loss and good low frequency characteristic and harmonic wave inhibition.
Open circuit counterfoil loading structure design: according to micro-band transmission theory, design the size of open circuit counterfoil loading structure, produce ultra broadband.
Claims (4)
1. the ultra-wide band filter based on multimode resonance, it is characterized in that, the open circuit counterfoil structure (1) of dielectric-slab upper surface, microstrip feed line structure (2), described open circuit counterfoil structure (1) are made up of the identical transmission microstrip line of four width and the rectangular patch that is carved with two rectangular channels and a dumbbell shape groove, and microstrip feed line structure (2) is made up of transmission microstrip line and the rectangular patch that is carved with U-lag.
2. a kind of ultra-wide band filter based on multimode resonance according to claim 1, is characterized in that, two rectangular channels on open circuit counterfoil structure (1) rectangular patch are symmetrical about dumbbell shape groove, and four transmission microstrip lines are symmetrical about rectangular patch.
3. a kind of ultra-wide band filter based on multimode resonance according to claim 1, it is characterized in that, four in open circuit counterfoil structure (1) the transmission microstrip lines transmitted in the microstrip feed line structure on coupling lines and both sides form toe coupled structure, and total presents symmetry.
4. a kind of ultra-wide band filter based on multimode resonance according to claim 1, is characterized in that, the microstrip feed line structure on both sides is symmetric about open circuit counterfoil structure (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521049528.4U CN205231218U (en) | 2015-12-12 | 2015-12-12 | Super broad band filter based on multimode resonance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521049528.4U CN205231218U (en) | 2015-12-12 | 2015-12-12 | Super broad band filter based on multimode resonance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205231218U true CN205231218U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521049528.4U Expired - Fee Related CN205231218U (en) | 2015-12-12 | 2015-12-12 | Super broad band filter based on multimode resonance |
Country Status (1)
| Country | Link |
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| CN (1) | CN205231218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876839A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of ultra-wide band filter based on multimode resonance |
-
2015
- 2015-12-12 CN CN201521049528.4U patent/CN205231218U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876839A (en) * | 2015-12-12 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of ultra-wide band filter based on multimode resonance |
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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: 20160511 Termination date: 20161212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |