CN209233814U - A kind of frequency-selective switch filtering unit - Google Patents
A kind of frequency-selective switch filtering unit Download PDFInfo
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- CN209233814U CN209233814U CN201821322861.1U CN201821322861U CN209233814U CN 209233814 U CN209233814 U CN 209233814U CN 201821322861 U CN201821322861 U CN 201821322861U CN 209233814 U CN209233814 U CN 209233814U
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Abstract
The utility model discloses a kind of frequency-selective switch filtering unit, including 1 road pattern-band signal input port, 1 road L-band input signal and 1 road signal input end of intermediate frequency mouth；IF input signals export 1 road signal after dividing two-way, 1 tunnel intermediate-freuqncy signal and pattern-band input signal to be input to frequency mixer through power splitter, and another way intermediate-freuqncy signal and L-band input signal export 1 road signal after being input to frequency mixer；The two paths of signals of 2 frequency mixers output exports up-conversion signal through filter amplification circuit respectively, it is exported again through switching circuit and filtering and amplifying circuit, 2 tunnel output signals export 1 road signal through single-pole double-throw switch (SPDT), then divide two-way output pattern-band output signal and L-band output signal through power splitter.The utility model can realize the switching at any time of pattern-band Yu L-band signal, and switch speed is fast；Frequency selection signal phase noise is small, spuious small, power stability.
Description
Technical field
The utility model belongs to signal processing technology field, and in particular to a kind of frequency-selective switch filtering unit.
Background technique
With the development of broadband communications technologies, frequency-selective network is widely used in frequency synthesizer, transmitter, receiver,
Seek the performances such as frequency selection signal purity of frequency spectrum height, quick tracking frequency variation, bandwidth.Switch filtering component is used for radar receiver
In, it is the critical component in frequency-selective network.Existing frequency-selective switch filtering unit has the following deficiencies: the frequency selection signal purity of frequency spectrum
It is low, phase noise is big, power is unstable, frequency selection signal switch speed is slow.
Utility model content
Purpose of utility model: the utility model aim is in view of the deficiencies of the prior art, to provide a kind of frequency selection signal phase
The frequency-selective switch filtering unit that position noise is small, spuious small, power stability, switch speed are fast.
Technical solution: frequency-selective switch filtering unit described in the utility model, including 1 road pattern-band signal input port, 1 road L
Wave band input signal and 1 road signal input end of intermediate frequency mouth；IF input signals divide two-way, 1 tunnel intermediate-freuqncy signal and P wave through power splitter
Section input signal exports 1 road signal after being input to frequency mixer, and another way intermediate-freuqncy signal and L-band input signal are input to frequency mixer
After export 1 road signal；The two paths of signals of 2 frequency mixers output exports up-conversion signal through filter amplification circuit respectively, then through opening
Powered-down road and filtering and amplifying circuit output, 2 tunnel output signals export 1 road signal through single-pole double-throw switch (SPDT), then are divided to two through power splitter
Road exports pattern-band output signal and L-band output signal.
Further improving above-mentioned technical proposal, the switching circuit includes four throw switch of two-stage hilted broadsword and 4 filters,
The up-conversion signal is divided into 4 band frequencies through the output of four throw switch of hilted broadsword point, 4 tunnels, then through 4 filters, then opens through hilted broadsword four-throw
It closes as the output of 1 road signal.
Further, the pattern-band input signal is successively input to frequency mixer after amplifier and filter amplification filtering.
Further, the L-band input signal is input to frequency mixer after amplifier amplifies.
Further, the filter amplification circuit includes sequentially connected filter and amplifier, the letter of frequency mixer output
Number up-conversion signal is taken through filter, then through amplifier amplifying power.
Further, the filtering and amplifying circuit includes sequentially connected amplifier and filter, is exported through switching circuit
1 road signal filter out harmonic wave through amplifier amplifying power, then through filter.
Further, four throw switch of hilted broadsword described in two-stage is controlled by TTL realizes that the selection of 4 band frequencies switches, the list
Double-pole double throw switch controls the switching for realizing pattern-band output signal and L-band output signal by TTL.
Further, the signal input port and signal output port are SSMA-KFK2 type.
The utility model has the advantages that (1) the utility model pattern-band can switch at any time with L-band output signal, switch speed is fast；Mixing
The pattern-band signal and L-band signal of outputting high quality afterwards, phase noise is small, spuious small, power stability, excellent performance, pre- to improving
Radar detection sensitivity on alert machine plays key effect.
(2) the utility model has the characteristics that small in size, light-weight, low in energy consumption, use suitable for mass production.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Specific embodiment
Technical solutions of the utility model are described in detail below by attached drawing, but the protection scope of the utility model
It is not limited to the embodiment.
Embodiment 1: a kind of frequency-selective switch filtering unit, as shown in Figure 1, include 3 signal input ports XS3, XS4 and
XS5,2 signal output ports XS1 and XS2.Wherein, XS5 is pattern-band signal input port, and XS4 is signal input end of intermediate frequency
Mouthful, XS3 is L-band signal input port, and XS1 is pattern-band signal output port, and XS2 is L-band signal output port.It is described
Signal input port and signal output port are SSMA-KFK2 type.
Pattern-band signal input port is sequentially connected amplifier, filter and frequency mixer, and L-band signal input port is successively
Connect amplifier and frequency mixer.
Intermediate-freuqncy signal divides two-way to export through power splitter, 1 tunnel intermediate-freuqncy signal with to be amplified filtered pattern-band input signal defeated
Enter to frequency mixer and be mixed 1 road signal of output, another way intermediate-freuqncy signal and amplified L-band input signal are input to frequency mixer
Mixing 1 road signal of output.The two paths of signals of 2 frequency mixers output exports up-conversion signal through filter amplification circuit respectively, then passes through
Switching circuit and filtering and amplifying circuit output, 2 tunnel output signals export 1 road signal through single-pole double-throw switch (SPDT), then through power splitter point
Two-way exports pattern-band output signal and L-band output signal, and the single-pole double-throw switch (SPDT) is controlled by TTL realizes that pattern-band exports
The switching of signal and L-band output signal.
The filter amplification circuit includes sequentially connected filter and amplifier, and the signal of frequency mixer output is through filter
Up-conversion signal is taken, then through amplifier amplifying power.
The switching circuit includes four throw switch of two-stage hilted broadsword and 4 filters, and the up-conversion signal is through hilted broadsword four-throw
The output of 4 tunnels of switch point, then it is divided into 4 band frequencies through 4 filters, then be combined into the output of 1 road signal through four throw switch of hilted broadsword.Two-stage institute
It states four throw switch of hilted broadsword and controls the selection switching for realizing 4 band frequencies by TTL.
The filtering and amplifying circuit includes sequentially connected amplifier and filter, the 1 road signal exported through switching circuit
Harmonic wave is filtered out through amplifier amplifying power, then through filter.
The utility model pattern-band working principle: pattern-band frequency input signal A is mixed with intermediate-freuqncy signal by high degree of suppression
It is P wave that device mixing, which show that up-conversion and two frequency signals of down coversion → height inhibit band logical LC filter filtering to take up-conversion signal,
Band frequency B → pattern-band frequency B by power amplifier amplifying power → through four throw switch of SP4T hilted broadsword be divided into four accesses →
Four accesses, which pass through four high degree of suppression bandpass filter respectively and filter out out-of-band frequency, is divided into four band frequency signals → tetra- band frequencies
Signal is combined into an access using four throw switch of SP4T hilted broadsword, real by control of the TTL to four throw switch of two-stage SP4T hilted broadsword
The selection of existing four band frequency signals switches → filter out pattern-band frequency B's through power amplifier amplifying power → low-pass filtered device
Harmonic wave → pattern-band frequency B and L-band frequency B is combined into an access through SPDT single-pole double-throw switch (SPDT), by TTL to SPDT hilted broadsword
It is final that the control of commutator realizes that Way -0 ° of switching → 2 power splitter of pattern-band frequency B and L-band frequency B is divided into two-way
Output.
L-band working principle: L-band frequency A be mixed with intermediate-freuqncy signal by high degree of suppression frequency mixer obtain up-conversion with
It is L-band frequency B → L-band frequency that two frequency signals of down coversion → height, which inhibits band logical LC filter filtering to take up-conversion signal,
Rate B passes through four by power amplifier amplifying power → be divided into four access → tetra- accesses through four throw switch of SP4T hilted broadsword respectively
A high degree of suppression bandpass filter filters out out-of-band frequency and is divided into four band frequency signals → tetra- band frequency signals using SP4T hilted broadsword
Four throw switches are combined into an access, realize the choosing of four band frequency signals to the control of four throw switch of two-stage SP4T hilted broadsword by TTL
Select switching → through power amplifier amplifying power → low-pass filtered device filter out harmonic wave → pattern-band frequency B of L-band frequency B with
L-band frequency B is combined into an access through SPDT single-pole double-throw switch (SPDT), realizes P to the control of SPDT single-pole double-throw switch (SPDT) by TTL
Way -0 ° of switching → 2 power splitter of audio range frequency B and L-band frequency B is divided into two-way final output.
As described above, although the utility model has been indicated and described referring to specific preferred embodiment, it must not
It is construed to the limitation to the utility model itself.In the spirit and scope for not departing from the utility model that appended claims define
Under the premise of, it can various changes can be made in the form and details to it.
Claims (8)
1. a kind of frequency-selective switch filtering unit, it is characterised in that: including 1 road pattern-band signal input port, 1 road L-band input letter
Number and 1 road signal input end of intermediate frequency mouth；IF input signals divide two-way, 1 tunnel intermediate-freuqncy signal and pattern-band input signal through power splitter
1 road signal is exported after being input to frequency mixer, another way intermediate-freuqncy signal and L-band input signal export 1 tunnel after being input to frequency mixer
Signal；The two paths of signals of 2 frequency mixers output exports up-conversion signal through filter amplification circuit respectively, then through switching circuit and puts
Big filter circuit output, 2 tunnel output signals export 1 road signal through single-pole double-throw switch (SPDT), then divide two-way to export pattern-band through power splitter
Output signal and L-band output signal.
2. frequency-selective switch filtering unit according to claim 1, it is characterised in that: the switching circuit includes two-stage hilted broadsword
Four throw switches and 4 filters, the up-conversion signal export through four throw switch of hilted broadsword point, 4 tunnels, then are divided into 4 through 4 filters
Band frequency, then the output of 1 road signal is combined into through four throw switch of hilted broadsword.
3. frequency-selective switch filtering unit according to claim 1, it is characterised in that: the pattern-band input signal successively passes through
Frequency mixer is input to after amplifier and filter amplification filtering.
4. frequency-selective switch filtering unit according to claim 1, it is characterised in that: the L-band input signal is through amplifying
Frequency mixer is input to after device amplification.
5. frequency-selective switch filtering unit according to claim 1, it is characterised in that: the filter amplification circuit includes successively
The signal of the filter and amplifier of connection, frequency mixer output takes up-conversion signal through filter, then through amplifier amplifying power.
6. frequency-selective switch filtering unit according to claim 1, it is characterised in that: the filtering and amplifying circuit includes successively
The amplifier and filter of connection, the 1 road signal through switching circuit output is through amplifier amplifying power, then filters out through filter humorous
Wave.
7. frequency-selective switch filtering unit according to claim 2, it is characterised in that: four throw switch of hilted broadsword described in two-stage passes through
The selection switching of 4 band frequencies is realized in TTL control, and the single-pole double-throw switch (SPDT) is controlled by TTL and realizes pattern-band output signal and L
The switching of wave band output signal.
8. frequency-selective switch filtering unit according to claim 1, it is characterised in that: the signal input port and signal are defeated
Exit port is SSMA-KFK2 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821322861.1U CN209233814U (en) | 2018-08-16 | 2018-08-16 | A kind of frequency-selective switch filtering unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821322861.1U CN209233814U (en) | 2018-08-16 | 2018-08-16 | A kind of frequency-selective switch filtering unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209233814U true CN209233814U (en) | 2019-08-09 |
Family
ID=67497730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821322861.1U Expired - Fee Related CN209233814U (en) | 2018-08-16 | 2018-08-16 | A kind of frequency-selective switch filtering unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209233814U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832940A (en) * | 2018-08-16 | 2018-11-16 | 南京迈强电子科技有限责任公司 | A kind of frequency-selective switch filtering unit |
| CN110677187A (en) * | 2019-08-30 | 2020-01-10 | 西安空间无线电技术研究所 | High-throughput communication satellite transponder of distributed gateway station and gateway station |
-
2018
- 2018-08-16 CN CN201821322861.1U patent/CN209233814U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832940A (en) * | 2018-08-16 | 2018-11-16 | 南京迈强电子科技有限责任公司 | A kind of frequency-selective switch filtering unit |
| CN108832940B (en) * | 2018-08-16 | 2023-09-26 | 南京迈强电子科技有限责任公司 | Frequency-selecting switch filtering assembly |
| CN110677187A (en) * | 2019-08-30 | 2020-01-10 | 西安空间无线电技术研究所 | High-throughput communication satellite transponder of distributed gateway station and gateway station |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190809 Termination date: 20200816 |
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| CF01 | Termination of patent right due to non-payment of annual fee |