CN108736114A - A kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners - Google Patents
A kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners Download PDFInfo
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- CN108736114A CN108736114A CN201710250460.3A CN201710250460A CN108736114A CN 108736114 A CN108736114 A CN 108736114A CN 201710250460 A CN201710250460 A CN 201710250460A CN 108736114 A CN108736114 A CN 108736114A
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- 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
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Abstract
The invention discloses a kind of high clutter reduction cross-coupling band pass filters for S frequency range tuners, including input feed-in mating end, resonance resonator element, zero compensation unit and output end feed-in mating end, utilize doubling plate printed circuit board microstrip circuit, upper layer is microstrip line, lower layer is full stratum, circuit is microstrip line microwave circuit at the middle and upper levels for it, input signal is input to the input terminal Port1 of input feed-in mating end by 50 ohm microstrips, and input feed-in mating end matches front end input impedance and filter impedance simultaneously；Signal is filtered by resonance resonator element, while zero compensation unit increases the negative feedback of resonance resonator element.The present invention is designed to that totem pattern half-wavelength resonance resonator realizes cross-coupling characteristics, to realize high clutter reduction outside S frequency range proximity band in a manner of particular arrangement using microstrip lines characteristic with position using printed circuit board microstrip circuit.
Description
Technical field
The invention belongs to tuner, satellite reception, satellite television, satellite communication, communication equipment fields, and in particular to a kind of
High clutter reduction cross-coupling band pass filter for S frequency range tuners.
Background technology
The prosperity of science and technology is communicated, the universal and update of communication system, especially in dense population areas, these communication signals are opposite
It is thousands of up to ten thousand times or more strong in the weak signals that tuner to be received, and the very close reception frequency range 2520 of signal~
2670MHz, this is to S frequency ranges tuner especially such as nightmare, miscellaneous filter consequentiality.
Invention content
Technical problem to be solved by the invention is to provide a kind of totem type is designed to using printed circuit board microstrip circuit
Formula half-wavelength resonance resonator realizes that cross-couplings are special in a manner of particular arrangement using adjacent microstrip lines characteristic with position
Property, to realize a kind of high clutter reduction cross coupling strip for S frequency range tuners of high clutter reduction outside S frequency range proximity band
Bandpass filter.
The present invention is achieved through the following technical solutions：A kind of high clutter reduction for S frequency range tuners intersects
Couple bandpass filter, including input feed-in mating end, resonance resonator element, zero compensation unit and output end feed-in
With end, using doubling plate printed circuit board microstrip circuit, upper layer is microstrip line, and lower layer is full stratum, and circuit is micro- at the middle and upper levels
Band line microwave circuit, input signal are input to the input terminal Port1 of input feed-in mating end by 50 ohm microstrips, input feed-in
Mating end matches front end input impedance and filter impedance simultaneously；Signal is filtered by resonance resonator element, while zero compensation
Unit increases the negative feedback of resonance resonator element；By output end feed-in mating end matching impedance via Port2 after signal filtering
Output signal is to 50 ohmage microstrip lines.
The resonance resonator element 12 is to include six totem type resonators 121, resonance as a preferred technical solution,
Device is total length about filter passband centre frequency half wave microstrip line.
Six resonators are respectively 1~No. 6 resonator as a preferred technical solution, and median filter mainly passes
The coupling path for passing signal is resonator 1 to 2,2 to 3,3 to 4,4 to 5,5 to 6, and the negative feedback path of secondary transmitting signals is
Resonator 2 to 5 and 1 to 6, above-mentioned main transmission coupling path mainly determine filter poles, the secondary main decision zero of transmission path.
It is described as a preferred technical solution, to use frequency range for 2520~2670MHz of S-band.
Six totems type resonator forms a six resonator cross-couplings filtering as a preferred technical solution,
Device, it includes signal matching feed side, digital circul resonance resonator, the pole coupling path with solid-line paths and and void
The zero coupling path of thread path.
It is 50 ohm microstrip output/input systems as a preferred technical solution,.
The beneficial effects of the invention are as follows：The present invention is designed to that totem pattern half-wavelength is total using printed circuit board microstrip circuit
Shake resonator, and using microstrip lines characteristic, cross-coupling characteristics are realized with position in a manner of particular arrangement, to realize S frequencies
High clutter reduction outside section proximity band.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1：The present invention realizes six resonator cross-coupled filter line map of micro-strip；
Fig. 2：The present invention realizes six resonator cross-coupled filter configuration diagrams；
Fig. 3：The present invention realizes six resonator cross-coupled filter analog feature figure of micro-strip；
Fig. 4：The present invention realizes three resonator cross-coupled filter configuration diagrams；
Fig. 5：The present invention realizes three resonator cross-coupled filter line map of micro-strip；
Fig. 6：The present invention realizes three resonator cross-coupled filter analog feature figure of micro-strip.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other equivalent or with similar purpose alternative features.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
As shown in Figure 1, using doubling plate printed circuit board microstrip circuit, upper layer is microstrip line, and lower layer is full stratum (full gold
Belong to layer), circuit is microstrip line microwave circuit as shown in Figure 1 at the middle and upper levels；Input signal is input to defeated by 50 ohm microstrips
Enter the input terminal Port1 of feed-in mating end 11, input feed-in mating end matches front end input impedance and filter impedance simultaneously；News
Number again via resonance resonator element 12 (including six resonators) filtering, while zero compensation unit 13 can increase resonance resonance
The negative feedback of device unit can increase the inhibition of special frequency channel to generate additional zero filtering characteristic；By defeated after signal filtering
14 matching impedance of outlet feed-in mating end is via Port2 output signals to 50 ohmage microstrip lines；
Above-mentioned resonance resonator element 12 is comprising six totem type resonators 121, and resonator is total length about filter
Passband central frequency half wavelength (half-wavelength) microstrip line, peripheral length-width ratio can change according to actual use；Resonate resonance
Device unit can pass through different directions, arrangement, relative distance, and the appearance characteristics such as different length-width ratios ..., and in place additional
Increase zero compensation unit 13, to realize the filtering characteristic of particular requirement.
As shown in Figure 2, this schematic diagram is used for the above-mentioned Fig. 1 that simply remarks additionally, including the signal with arrow solid-line paths
Feed side 21 is matched, there is digital circul resonance resonator 22, pole coupling path 23 and dashed path with solid-line paths
Zero coupling path 24, other resemblances no longer illustrate；Above-mentioned filter is respectively altogether 1~No. 6 resonance there are six resonator
Device, the coupling paths (above-mentioned solid-line paths) of the main transmitting signals of median filter be resonator 1 to 2,2 to 3,3 to 4,4 to 5,
5 to 6, and the negative feedback path (above-mentioned dashed path) of secondary transmitting signals is resonator 2 to 5 and 1 to 6；Above-mentioned main transmission coupling
Combining diameter mainly determines filter poles (passband), the secondary main decision zero of transmission path (band is outer).
As shown in Figure 3, wherein curve 31 is insertion loss (Insert Loss), and curve 32 is reflection loss (Return
Loss)；This example realizes that filter circuit is as shown in Figure 1, circuit ruler using model RO4233 thickness 20mil double-layer circuit boards
Very little is 1200x650mil, and band connection frequency is 2520~2670MHz, and band is outer<2490MHz and>2700MHz it is existing be more than 30dB with
On inhibition, wherein out-of-band frequency is relative to being about 1.16% with interior centre frequency.
Another specific implementation illustrates resonator cross-coupling band pass filter there are three tools below.
As shown in Figure 4, this schematic diagram illustrates similar above-mentioned Fig. 2 explanations；Filter is respectively altogether 1~3 there are three resonator
The coupling path (above-mentioned solid-line paths) of number resonator, other main transmitting signals of filter is resonator 1 to 2,2 to 3, and secondary
It is resonator 2 to 3 to want the negative feedback path (above-mentioned dashed path) of transmitting signals；Above-mentioned main transmission coupling path mainly determines to filter
Wave device pole (passband), the secondary main decision zero of transmission path (band is outer).
As shown in Figure 5, this example is realized using model RO4233 thickness 20mil double-layer circuit boards, and circuit size is
880x400mil；Wherein resonator is half wavelength totem type resonator, and respective length-width ratio is respectively different because characteristic designs.
As shown in Figure 6, it is above-mentioned Fig. 5 simulated properties, wherein curve 61 is insertion loss (Insert Loss), curve 62
For reflection loss (Return Loss)；Band connection frequency is 2520~2670MHz, and band is outer<2300MHz is existing to be more than 30dB or more
Inhibition, wherein out-of-band frequency is relative to being about 8.48% with interior centre frequency.
Above-mentioned two examples, can be by three resonator filters as the anti-locking system of front end (grade) pre-filtering in practical application
Front end is primarily due to insertion loss and size is smaller, six resonator filters are as main filtering, band because of the too strong and full conjunction of noise
The larger but insertion loss of outer inhibition is also relatively large；Though above example only there are three and six resonator junction filters, it is real
It, can be according to requiring change design 2 to N number of resonator, through different directions, arrangement, relative distance, and different length and width etc. when border is applied
Appearance characteristics, and additional increase zero compensation in place, to realize the filtering characteristic of particular requirement.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work, should be covered by the protection scope of the present invention.Therefore, of the invention
Protection domain should be determined by the scope of protection defined in the claims.
Claims (6)
1. a kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners, it is characterised in that：It is presented including input
Enter mating end, resonance resonator element, zero compensation unit and output end feed-in mating end, utilizes doubling plate printed circuit board
Microstripline, upper layer are microstrip line, and lower layer is full stratum, and circuit is microstrip line microwave circuit at the middle and upper levels, and input signal is by 50
Ohm microstrip is input to the input terminal Port1 of input feed-in mating end, and input feed-in mating end matches front end input resistance simultaneously
Anti- and filter impedance；Signal is filtered by resonance resonator element, while zero compensation unit increases resonance resonator element
Negative feedback；By output end feed-in mating end matching impedance via Port2 output signals to 50 ohmage micro-strips after signal filtering
Line.
2. a kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners as described in claim 1, special
Sign is：The resonance resonator element 12 is comprising six totem type resonators 121, and resonator is logical for total length about filter
Mid-band frequency half wave microstrip line.
3. a kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners as claimed in claim 2, special
Sign is：Six resonators are respectively 1~No. 6 resonator, and the coupling path of the main transmitting signals of median filter is humorous
Shake device 1 to 2,2 to 3,3 to 4,4 to 5,5 to 6, and the negative feedback path of secondary transmitting signals is resonator 2 to 5 and 1 to 6, on
It states main transmission coupling path and mainly determines filter poles, the secondary main decision zero of transmission path.
4. a kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners as described in claim 1, special
Sign is：It is described to use frequency range for 2520~2670MHz of S-band.
5. a kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners as claimed in claim 2, special
Sign is：Six totems type resonator forms a six resonator cross-coupled filters, and it includes signals to match feed-in
End, digital circul resonance resonator, the pole coupling path with solid-line paths and and dashed path zero coupling path.
6. a kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners as described in claim 1, special
Sign is：For 50 ohm microstrip output/input systems.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710250460.3A CN108736114A (en) | 2017-04-17 | 2017-04-17 | A kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710250460.3A CN108736114A (en) | 2017-04-17 | 2017-04-17 | A kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040196114A1 (en) * | 2003-02-26 | 2004-10-07 | Kabushiki Kaisha Toshiba | Filter circuit |
| CN201387928Y (en) * | 2009-04-21 | 2010-01-20 | 南京赛格微电子科技有限公司 | Hairpin microstrip bandpass filter |
| CN102280677A (en) * | 2010-06-08 | 2011-12-14 | 天津海泰超导电子有限公司 | Dual-bandpass high-temperature superconducting filter |
| CN104966871A (en) * | 2015-07-13 | 2015-10-07 | 南京恒电电子有限公司 | Microstrip planar spiral filter and design method thereof |
| CN104966872A (en) * | 2015-07-20 | 2015-10-07 | 成都顺为超导科技股份有限公司 | High-temperature superconducting filter device with controllable transmission zero |
| CN206758619U (en) * | 2017-04-17 | 2017-12-15 | 东莞百一电子有限公司 | A kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners |
-
2017
- 2017-04-17 CN CN201710250460.3A patent/CN108736114A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040196114A1 (en) * | 2003-02-26 | 2004-10-07 | Kabushiki Kaisha Toshiba | Filter circuit |
| CN201387928Y (en) * | 2009-04-21 | 2010-01-20 | 南京赛格微电子科技有限公司 | Hairpin microstrip bandpass filter |
| CN102280677A (en) * | 2010-06-08 | 2011-12-14 | 天津海泰超导电子有限公司 | Dual-bandpass high-temperature superconducting filter |
| CN104966871A (en) * | 2015-07-13 | 2015-10-07 | 南京恒电电子有限公司 | Microstrip planar spiral filter and design method thereof |
| CN104966872A (en) * | 2015-07-20 | 2015-10-07 | 成都顺为超导科技股份有限公司 | High-temperature superconducting filter device with controllable transmission zero |
| CN206758619U (en) * | 2017-04-17 | 2017-12-15 | 东莞百一电子有限公司 | A kind of high clutter reduction cross-coupling band pass filter for S frequency range tuners |
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