CN106876842A - Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading - Google Patents
Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading Download PDFInfo
- Publication number
- CN106876842A CN106876842A CN201510943409.1A CN201510943409A CN106876842A CN 106876842 A CN106876842 A CN 106876842A CN 201510943409 A CN201510943409 A CN 201510943409A CN 106876842 A CN106876842 A CN 106876842A
- Authority
- CN
- China
- Prior art keywords
- minor matters
- circuit minor
- toroidal cavity
- cavity resonator
- open circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading, the wave filter includes 4 λ/4 short circuit minor matters resonator (101) of foldable structure, single open circuit minor matters resonator (102), toroidal cavity resonator (103), two input/output ports (104), half-wavelength microstrip line (105), medium substrate (106), metal ground plate (107) under medium substrate, the present invention realizes the bandpass filter with double trap characteristics using short-circuit minor matters and E type resonators, design is simple, compact conformation, it is easy to process, it is with low cost.
Description
Technical field
The present invention proposes double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading, and the wave filter is that have double traps
Ultra-wide band filter, wherein the λ/4 short circuit minor matters of 4 foldable structures realize the ultra wide band characteristic of wave filter, by loading
Toroidal cavity resonator loading is single to open a way minor matters resonator to realize double trap bandpass filters.
Background technology
2 months 2002, FCC (FCC) approval 3.1-10.6GHz frequency ranges were used for business telecommunication, because
This ultra wide band is widely used.However, in the commercial scope of FCC definition, ultra-broadband signal may be subject to such as WiAX
The interference of the signal such as (3.5-GHz), WLAN (5.15-5.825GHz), RFID (6.8GHz).How co-channel interference is solved
Important content is studied as ultra wide band, multiband filter is used as one of indispensable Primary Component, ultra-wide in Multi-Frequency Signaling System
Band double frequency band-pass filter obtains extensive concern and research.
Some mentalities of designing, such as multimode resonator (MMR), via structure are occurred in that in recent years, although this writes structure, energy is real
The effect of existing trap, but the size of these structures is larger, and trap is non-adjustable.So design wave filter trap is precipitous, size
Compact double trap bandpass filters are significant.
The content of the invention
The purpose of the present invention be is a kind of precipitous trap, small size are provided, with double trap characteristics and the adjustable filtering of trap
Device, the wave filter can reduce interference of the WLAN signal to UWB signal, realize ultra-wideband communication system and narrowband systems it
Between communication for coordination.
The technical solution adopted in the present invention：
Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading, including 4 λ/4 short circuit minor matters of foldable structure
Resonator (101), single open circuit minor matters resonator (102), toroidal cavity resonator (103), two input/output ports (104), half-wave
Microstrip line (105) long, medium substrate (106), the metal ground plate (107) under medium substrate.
Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading according to claim 1, it is characterized in that being situated between
λ/4 short circuit minor matters resonator (101) of 4 foldable structures on scutum surface, toroidal cavity resonator (103), two input/output terminals
Mouth (104), half-wavelength microstrip line (105) is symmetrical.
Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading according to claim 1, it is characterized in that with
The characteristic of ultra wide band is realized in λ/4 short circuit minor matters resonator (101) of 4 foldable structures, is loaded by toroidal cavity resonator and singly opened
Road minor matters realize double trap bandpass filters.
The invention wave filter has following characteristic and advantage relative to existing wave filter：
Design simple, compact conformation, easy to process, with low cost, passband is adjustable, bandpass characteristics is adjustable.
When toroidal cavity resonator (103) works, the wave filter is operated in the first passband.When single open circuit minor matters resonator (102) works,
The wave filter is operated in the second passband.
When wave filter is operated in the first passband, toroidal cavity resonator (103) does not work and as one of input port output port
Point, coupled come the source of introducing-load by adjusting the minor matters length of toroidal cavity resonator (103), improve the first passband selectivity.
When wave filter is operated in the second passband, single open circuit minor matters resonator (102) connects and input port, output port between,
Tap feed is formed, a transmission zero can be respectively introduced in passband both sides, the selectivity of the second passband is effectively improved.
Brief description of the drawings
Fig. 1 is the basic structure top view of embodiment of the present invention；
Fig. 2 is the basic structure dimensional drawing of embodiment of the present invention；
Fig. 3 is the basic structure side view of embodiment of the present invention；
Fig. 4 is the frequency response characteristic of embodiment of the present invention；
Specific embodiment
The present invention devises double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading, the wave filter trap is adjustable,
Passband is adjustable.
The invention is described in more detail below in conjunction with the accompanying drawings：
As shown in figure 1, double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading designed by the present invention, 4
λ/4 short circuit minor matters resonator (101) of foldable structure, single open circuit minor matters resonator (102), toroidal cavity resonator (103), two are defeated
Enter output port (104), half-wavelength microstrip line (105) uses copper product.
An example of the present invention is as shown in Fig. 2 it is 2.2 that medium substrate (106) is K dielectric constant
RT/Duorid5880, the thickness of the medium substrate is 1.0mm, and the metal ground plate (107) under medium substrate uses copper product.
As shown in Fig. 2 double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading designed by the present invention, pass through
Adjust the minor matters length of toroidal cavity resonator (103) to adjust the centre frequency and passband width of the first passband, by the double open circuit branches of regulation
The length of (102) is saved to adjust the centre frequency and passband width of the second passband.
The design parameter of double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading designed by the invention is as follows：
L1=5mm, L2=14mm, L3=4mm, L4=5.3mm, L6=2mm, L8=2mm, R1=0.1mm,
W1=1.7mm, W2=3mm, W3=0.3mm, W4=2.3mm, W8=0.3mm, specific structure are as shown in Figure 3.
The design of multimode resonator：The characteristic of ultra wide band is realized in λ/4 short circuit minor matters resonator (101) of 4 foldable structures,
First pass-band performance is realized by toroidal cavity resonator (103), one is respectively introduced in passband both sides by single open circuit minor matters resonator (102)
Transmission zero is with realizing the second pass-band performance.
The frequency response characteristic that Fig. 4 provides wave filter includes return loss | S11| and insertion loss | S21|.As seen from the figure, echo
Loss | S11| and insertion loss | S21| respectively less than -15dB, the wave filter realizes two in 5.8GHz frequency ranges and 10.7GHz frequency ranges
Isolation between individual trap, and the selectivity and passband of filter passband works well.
Claims (3)
1. double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading, including 4 λ/4 short circuit minor matters resonance of foldable structure
Device (101), single open circuit minor matters resonator (102), toroidal cavity resonator (103), two input/output ports (104), half-wave
Microstrip line (105) long, medium substrate (106), the metal ground plate (107) under medium substrate.
2. toroidal cavity resonator according to claim 1 loads double trap bandpass filters of single open circuit minor matters, it is characterized in that dielectric-slab
λ/4 short circuit minor matters resonator (101) of 4 foldable structures on surface, toroidal cavity resonator (103), two input/output terminals
Mouth (104), half-wavelength microstrip line (105) is symmetrical.
3. toroidal cavity resonator according to claim 1 loads double trap bandpass filters of single open circuit minor matters, it is characterized in that with 4
The characteristic of ultra wide band is realized in λ/4 short circuit minor matters resonator (101) of foldable structure, is loaded by toroidal cavity resonator and singly opened
Road minor matters realize double trap bandpass filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510943409.1A CN106876842A (en) | 2015-12-13 | 2015-12-13 | Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510943409.1A CN106876842A (en) | 2015-12-13 | 2015-12-13 | Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106876842A true CN106876842A (en) | 2017-06-20 |
Family
ID=59238746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510943409.1A Pending CN106876842A (en) | 2015-12-13 | 2015-12-13 | Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106876842A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742497A (en) * | 2019-02-28 | 2019-05-10 | 南京邮电大学 | A kind of four port reflectionless filter of transmission line |
| CN110137641A (en) * | 2019-06-17 | 2019-08-16 | 辽宁工程技术大学 | A kind of miniature double trap ultra-wide band filters based on the type of falling π resonator |
| CN110854484A (en) * | 2019-12-16 | 2020-02-28 | 辽宁工程技术大学 | DGS-based compact multi-notch ultra-wideband filter |
| CN112310584A (en) * | 2020-10-30 | 2021-02-02 | 广东鸿展通信技术有限公司 | Ring filter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950827A (en) * | 2010-09-06 | 2011-01-19 | 华东交通大学 | Branch node loaded ultra wideband microwave filter |
| CN203056054U (en) * | 2012-12-06 | 2013-07-10 | 哈尔滨飞羽科技有限公司 | Double-trap-wave UWB filter with adjustable trap waves and adjustable pass-band |
| CN103199325A (en) * | 2013-03-09 | 2013-07-10 | 西安电子科技大学 | Band gap reconfigurable micro-band ultra wide band filter |
| CN203760612U (en) * | 2013-11-27 | 2014-08-06 | 哈尔滨飞羽科技有限公司 | Novel multi-mode resonance ultra-wideband filter |
| CN203932263U (en) * | 2013-11-27 | 2014-11-05 | 哈尔滨飞羽科技有限公司 | A kind of ultra-wide band filter based on T font open circuit minor matters |
-
2015
- 2015-12-13 CN CN201510943409.1A patent/CN106876842A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950827A (en) * | 2010-09-06 | 2011-01-19 | 华东交通大学 | Branch node loaded ultra wideband microwave filter |
| CN203056054U (en) * | 2012-12-06 | 2013-07-10 | 哈尔滨飞羽科技有限公司 | Double-trap-wave UWB filter with adjustable trap waves and adjustable pass-band |
| CN103199325A (en) * | 2013-03-09 | 2013-07-10 | 西安电子科技大学 | Band gap reconfigurable micro-band ultra wide band filter |
| CN203760612U (en) * | 2013-11-27 | 2014-08-06 | 哈尔滨飞羽科技有限公司 | Novel multi-mode resonance ultra-wideband filter |
| CN203932263U (en) * | 2013-11-27 | 2014-11-05 | 哈尔滨飞羽科技有限公司 | A kind of ultra-wide band filter based on T font open circuit minor matters |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742497A (en) * | 2019-02-28 | 2019-05-10 | 南京邮电大学 | A kind of four port reflectionless filter of transmission line |
| CN110137641A (en) * | 2019-06-17 | 2019-08-16 | 辽宁工程技术大学 | A kind of miniature double trap ultra-wide band filters based on the type of falling π resonator |
| CN110854484A (en) * | 2019-12-16 | 2020-02-28 | 辽宁工程技术大学 | DGS-based compact multi-notch ultra-wideband filter |
| CN112310584A (en) * | 2020-10-30 | 2021-02-02 | 广东鸿展通信技术有限公司 | Ring filter |
| CN112310584B (en) * | 2020-10-30 | 2021-11-05 | 广东鸿展通信技术有限公司 | Ring filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104409808B (en) | Comb filter based on multimode resonator | |
| CN106876843A (en) | Double trap bandpass filters of the double open circuit minor matters of toroidal cavity resonator loading | |
| CN106876842A (en) | Double trap bandpass filters of the single open circuit minor matters of toroidal cavity resonator loading | |
| CN103972617B (en) | The broadband duplexer of dual-mode resonator is loaded based on minor matters | |
| CN104037477A (en) | Multi-band tunable microstrip band-pass filter | |
| CN106099278B (en) | Resonant element and filter | |
| CN110137641A (en) | A kind of miniature double trap ultra-wide band filters based on the type of falling π resonator | |
| Moloudian et al. | A harmonic-free Wilkinson power divider using lowpass resonators | |
| CN106876844A (en) | Double trap bandpass filters based on open circuit minor matters and toroidal cavity resonator | |
| CN204375890U (en) | Based on the ultra-broadband dual-frequency band pass filter of dual-mode resonator | |
| CN106876845A (en) | The three trap bandpass filters based on step electric impedance resonator and open circuit minor matters | |
| CN204067532U (en) | A kind of double frequency band-pass filter based on defect microstrip line | |
| CN105789774A (en) | Ultra wideband dual-frequency pass-band filter based on stepped impedance resonator | |
| CN105789764A (en) | Multi-mode resonator based ultra-wide-band tri-band band-pass filter | |
| CN104795612A (en) | Three-notch ultra-wideband filter based on defected microstrip structures | |
| Zheng et al. | Design of UWB bandpass filter with dual notched bands using E-shaped resonator | |
| CN104934664A (en) | A high-selectivity submillimeter wave ultra wide band filter based on a vehicle-mounted radar system | |
| CN105322252A (en) | U-shaped slot resonator-based ultra-wideband notch filter | |
| CN105071009B (en) | A kind of LTCC duplexers based on public resonator | |
| CN104241750B (en) | A kind of double frequency band-pass filter based on defect microstrip line | |
| CN105789765A (en) | Dual-mode resonator based controllable UWB (ultra-wide-band) dual-band band-pass filter | |
| CN105789775A (en) | Ultra wideband dual-frequency pass-band filter based on dual-mode stepped impedance stud resonator | |
| CN204375893U (en) | Based on the ultra-broadband dual-frequency band pass filter of bimodulus stepped impedance counterfoil resonator | |
| CN204375892U (en) | Based on the compact double frequency band-pass ultra-wide band filter of step electric impedance resonator | |
| KR100729969B1 (en) | Repeater having dielectric band stop resonators |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170620 |