CN108173529A - A kind of ultra-wide band radio-frequency electric tuning filter network - Google Patents
A kind of ultra-wide band radio-frequency electric tuning filter network Download PDFInfo
- Publication number
- CN108173529A CN108173529A CN201711380698.4A CN201711380698A CN108173529A CN 108173529 A CN108173529 A CN 108173529A CN 201711380698 A CN201711380698 A CN 201711380698A CN 108173529 A CN108173529 A CN 108173529A
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- Prior art keywords
- throw switch
- pole
- unit
- filter
- electric tuning
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H2009/02165—Tuning
- H03H2009/02173—Tuning of film bulk acoustic resonators [FBAR]
- H03H2009/02188—Electrically tuning
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Circuits Of Receivers In General (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
The invention discloses a kind of ultra-wide band radio-frequency electric tuning filter network, including：Single-pole double-throw switch (SPDT) A (1), single-pole double-throw switch (SPDT) B (8), single-pole three-throw switch A (2), single-pole three-throw switch B (5), single-pole three-throw switch C (4), single-pole three-throw switch D (7), digital signal processing unit (11), further include：Electric tuning filter unit A (3), electric tuning filter unit B (6), operation amplifier unit (9), D/A conversion unit (10).Host computer signal control digital signal processing unit (11) exports switch control level signal and controls six road single knife switches, selection open in six tunnels filtering access it is arbitrary all the way, host computer signal controls digital signal processing unit (11) outputs level signals, and analog voltage signal is exported by D/A conversion unit (10).Frequency band switching time of the present invention is less than 15us, applied in ultra wideband receiver and transmitter, can effectively reduce filter circuit scale, improve communication anti-interference capability.
Description
Technical field
The present invention relates to a kind of electric tuning filter network, particularly a kind of ultra-wide band radio-frequency electric tuning filter network.
Background technology
Filter unit is important component in communication RF front-end, can carry out signal pre-selection, so efficient that utilize frequency
Spectrum resource, and wideband filtered network is then the necessary part that broadband rf front end realizes narrow-band filtering function.High reliability is wireless
Communication system will realize certain safety while reliable and stable communication is ensured, reduce signal of communication and be disturbed or intercept
Possibility.Under electromagnetic environment increasingly complicated now, either carry out wireless communication or electromagnetic spectrum is scouted or electricity
Sub-information is fought, and transmitter is required with receiver covers wider frequency range.Receiver also needs to prevent obstruction interference problem, protects
The receiving sensitivity of card system, this just needs the narrow-band filtering ability that wideband filtered network provides.
General Conventional wide band filter network is made of fixed-bandwidth wave filter, RF switch and digital signal processing unit,
More using wave filter quantity, scale is big, and control signal connection is complicated, is unfavorable for not met the characteristics of integrating highly reliable now
Property wireless communication system miniaturization, unitized requirement.
Invention content
The purpose of the present invention is to provide a kind of ultra-wide band radio-frequency electric tuning filter networks, solve Conventional wide band filter network
More using wave filter quantity, scale is big, and control signal connection is complicated, is unfavorable for the problem of integrated.
A kind of ultra-wide band radio-frequency electric tuning filter network, including：Single-pole double-throw switch (SPDT) A, single-pole double-throw switch (SPDT) B, hilted broadsword three
Throw switch A, single-pole three-throw switch B, single-pole three-throw switch C, single-pole three-throw switch D and digital signal processing unit, further include：Electricity
Tuning filtering unit A, electric tuning filter unit B, operation amplifier unit and D/A conversion unit.Two of single-pole double-throw switch (SPDT) A
Output terminal connects the input terminal of single-pole three-throw switch A and single-pole three-throw switch B, the output terminal connection of single-pole three-throw switch A respectively
To the input terminal of electric tuning filter unit A, the output terminal of single-pole three-throw switch B is connected to the input terminal of electric tuning filter unit B.
Electric tuning filter unit A and electric tuning filter unit B is respectively comprising three electrically tunable filters, the output of electric tuning filter unit A
The output terminal of end connection single-pole three-throw switch C, the output terminal of the output terminal connection single-pole three-throw switch D of electric tuning filter unit B.
An output terminal of the input terminal connection rear class single-pole double-throw switch (SPDT) B of single-pole three-throw switch C, the input terminal of single-pole three-throw switch D
Connect another output terminal of rear class single-pole double-throw switch (SPDT) B.Digital signal processing unit connect each switch unit control terminal and
D/A conversion unit input terminal, the output terminal connection operation amplifier unit of D/A conversion unit, operation amplifier unit output terminal connect
It is connected to the tuning control terminal of electric tuning filter unit A and electric tuning filter unit B.Radio-frequency input signals is by single-pole double-throw switch (SPDT) A
Into host computer signal control digital signal processing unit output switch control level signal controls low-band signal from hilted broadsword
The output terminal of commutator A enters single-pole three-throw switch A, enters electric tuning filter unit by switch control level signal gating
In tri- tunnels of A all the way, single-pole three-throw switch C is entered back into, is output and then enter single-pole double-throw switch (SPDT) B, filtering is completed in output later
Radiofrequency signal；The output terminal of control high frequency band signal from single-pole double-throw switch (SPDT) A enter single-pole three-throw switch B, are controlled by switch
Level signal gating enters in tri- tunnels of electric tuning filter unit B all the way, enters back into single-pole three-throw switch D, is output and then enter list
The radiofrequency signal of filtering is completed in double-pole double throw switch B, later output.Host computer signal controls digital signal processing unit output level
Signal exports analog voltage signal by D/A conversion unit, electric tuning filter unit A is enlarged into using operation amplifier unit
With the electric tuning filter control signal of electric tuning filter unit B, for controlling electric tuning filter unit A and electric tuning filter unit
The bandwidth of operation of B.
The ultra-wide band radio-frequency electric tuning filter network, wherein, electric tuning filter unit A coverings 30MHz to 400MHz
Frequency band, electric tuning filter unit B cover 400MHz to 4GHz frequency bands, and whole filter network covers 30MHz to 4GHz frequency bands, and electricity is adjusted
The humorous filter tuner time is less than 10us, and tunable three dB bandwidth is the 10% of sub- electrically tunable filter bandwidth；
The ultra-wide band radio-frequency electric tuning filter network, wherein, host computer signal control digital signal processing unit is defeated
Go out switch control level signal control single-pole double-throw switch (SPDT) A, single-pole double-throw switch (SPDT) B, single-pole three-throw switch A, single-pole three-throw switch
B, single-pole three-throw switch C, single-pole three-throw switch D, selection open in six tunnels filtering access it is arbitrary all the way.
The ultra-wide band radio-frequency electric tuning filter network, wherein, host computer signal control digital signal processing unit is defeated
Go out level signal, analog voltage signal is exported by D/A conversion unit, electric tuning filter is enlarged into using operation amplifier unit
Wave device A, electrically tunable filter B, electrically tunable filter C, electrically tunable filter D, electrically tunable filter E, electrically tunable filter F
Filter tuner controls signal.
The ultra-wide band radio-frequency electric tuning filter network, wherein, electric tuning filter unit A and electric tuning filter unit B
In all tuning control terminals using same control signal, switch control terminal is connected as possible using phase inverter, reduces control line
Quantity.
With the above structure, compared with prior art, the method have the benefit that：Working band is wide, filtering
Narrow bandwidth, inventive network covers 30MHz to 4GHz frequency bands, and provides narrow-band filtering function, and filtering bandwidth is about electric tuning
The 10% of filter bandwidht；Switching time is short, and the switching filtered band time is less than 15us；It is few using wave filter quantity, the present invention
The middle electrically tunable filter network used compare Conventional wide band filter network wave filter quantity reduce 80%；Control line is few, electricity
Using same control signal, switch control terminal makes all tuning control terminals in tuning filtering unit A and electric tuning filter unit B
It is connected with same control signal or using phase inverter, reduces control line quantity；It is small, since wave filter quantity is few, and
Switching network and tuning signal control unit are simplified, volume is reduced.
Description of the drawings
A kind of structure diagrams of ultra-wide band radio-frequency electric tuning filter network of Fig. 1；
The structure diagram of electric tuning filter unit A described in a kind of ultra-wide band radio-frequency electric tuning filter networks of Fig. 2；
The structure diagram of electric tuning filter unit B described in a kind of ultra-wide band radio-frequency electric tuning filter networks of Fig. 3.
1. 2. single-pole three-throw switch A of single-pole double-throw switch (SPDT) A, 3. electric tuning filter unit A, 4. single-pole three-throw switch C
5. 6. 8. single-pole double-throw switch (SPDT) B of electric tuning filter unit 7. single-pole three-throw switch D of B of single-pole three-throw switch B, 9. operations are put
12. electrically tunable filter A of big unit 10. D/A conversion unit, 11. digital signal processing unit, 13. electric tuning filters
16. electrically tunable filter E of device B 14. electrically tunable filter C, 15. electrically tunable filter D, 17. electrically tunable filter F
Specific embodiment
A kind of ultra-wide band radio-frequency electric tuning filter network, including：Single-pole double-throw switch (SPDT) A1, single-pole double-throw switch (SPDT) B8 and number
Signal processing unit 11, further includes：Electric tuning filter unit A3, single-pole three-throw switch C4, single-pole three-throw switch B5, electric tuning filter
Wave unit B 6, single-pole three-throw switch D7, operation amplifier unit 9, D/A conversion unit 10, digital signal processing unit 11；Wherein,
Electric tuning filter unit A3 includes：Electrically tunable filter A12, electrically tunable filter B13 and electrically tunable filter C14；Electric tuning
Filter unit B6 includes：Electrically tunable filter D15, electrically tunable filter E16 and electrically tunable filter F17.
Two output terminals input with single-pole three-throw switch A2 and single-pole three-throw switch B5 respectively of single-pole double-throw switch (SPDT) A1
End connection, the output terminal of single-pole three-throw switch A2 are connect with the input terminal of electric tuning filter unit A3, single-pole three-throw switch B5's
Output terminal is connect with the input terminal of electric tuning filter unit B6.The output terminal of electric tuning filter unit A3 and single-pole three-throw switch C4
Input terminal connection, the output terminal of electric tuning filter unit B6 connect with the input terminal of single-pole three-throw switch D7.Single-pole three throw is opened
The output terminal for closing C4 is connect with an input terminal of single-pole double-throw switch (SPDT) B8, the output terminal and single-pole double throw of single-pole three-throw switch D7
Switch another output terminal connection of B8.Digital signal processing unit 11 and the control terminal of each switch unit and digital-to-analogue conversion list
The input terminal connection of member 10, the output terminal of D/A conversion unit 10 are connect with the input terminal of operation amplifier unit 9, operation amplifier list
The output terminal of member 9 is connect with the tuning control terminal of electric tuning filter unit A3 and electric tuning filter unit B6.
Electrically tunable filter A12, electrically tunable filter B13, electrically tunable filter C14 in electric tuning filter unit A3 are
Concurrency relation controls signal to control electrically tunable filter working band by filter tuner；In electric tuning filter unit B6
Electrically tunable filter D15, electrically tunable filter E16, electrically tunable filter F17 are also concurrency relation, pass through filter tuner control
Signal processed controls electrically tunable filter working band.The tuning bandwidth of electrically tunable filter A be 30MHz to 100MHz, electric tuning
The tuning bandwidth of wave filter B is 90MHz to 210MHz, and the tuning bandwidth of electrically tunable filter C is 200MHz to 400MHz, and electricity is adjusted
The tuning bandwidth of humorous filter D is 400MHz to 1GHz, and the tuning bandwidth of electrically tunable filter E is 1GHz to 2GHz, electric tuning
The tuning bandwidth of wave filter F is 2GHz to 4GHz, and tunable three dB bandwidth is the 10% of electrically tunable filter bandwidth.
Information is selected comprising filtering bandwidth in PC control signal, is handled by digital signal processing unit 11, is exported
Level signal is controlled to control single-pole double-throw switch (SPDT) A1, single-pole double-throw switch (SPDT) B8, single-pole three-throw switch A2, single-pole three-throw switch
B5, single-pole three-throw switch C4, single-pole three-throw switch D7 on off state, so as to open corresponding filtering access.Single-pole double-throw switch (SPDT)
A1 and single-pole double-throw switch (SPDT) B8 needs to open simultaneously low-band signal access or high frequency band signal access, and two control terminals use same
One level signal controls.Single-pole three-throw switch A2, single-pole three-throw switch B5, single-pole three-throw switch C4, single-pole three-throw switch
D7 respectively has 2 control terminals to determine on off state, and control terminal needs low and high level signal to be controlled.By adjusting switching and penetrate
The position of frequency signal wire converts low and high level signal by phase inverter and connects different control terminals, simplifies digital signal processing unit
11 arithmetic logics, and reduce output control line quantity.
PC control signal controls 11 outputs level signals of digital signal processing unit, defeated by D/A conversion unit 10
Go out analog voltage signal, being enlarged into electrically tunable filter A12, electrically tunable filter B13, electricity using operation amplifier unit 9 adjusts
The filter tuner control of humorous wave filter C14, electrically tunable filter D15, electrically tunable filter E16, electrically tunable filter F17 are believed
Number.Filtered band switching time determines by digital to analogy conversion timing signal and electrically tunable filter tuning period, electric tuning
The filter tuner time is less than 10us, and digital signal to analog signal conversion time determines by accompanying clock, with 10MHz with when
For clock, digital signal to analog signal conversion time is less than 5us, switches the filtered band time as a result, less than 15us.
Claims (4)
1. a kind of ultra-wide band radio-frequency electric tuning filter network, including：Single-pole double-throw switch (SPDT) A (1), single-pole double-throw switch (SPDT) B (8), list
Three throw switch A (2) of knife, single-pole three-throw switch B (5), single-pole three-throw switch C (4), single-pole three-throw switch D (7), at digital signal
Manage unit (11), it is characterised in that further include：Electric tuning filter unit A (3), electric tuning filter unit B (6), operation amplifier list
First (9), D/A conversion unit (10)；
Two output terminals of single-pole double-throw switch (SPDT) A (1) connect single-pole three-throw switch A (2) and single-pole three-throw switch B (5) respectively, single
The output terminal of three throw switch A (2) of knife is connected to the input terminal of electric tuning filter unit A (3), the output of single-pole three-throw switch B (5)
End is connected to the input terminal of electric tuning filter unit B (6), and electric tuning filter unit A (3) and electric tuning filter unit B (6) are respectively wrapped
Containing three electrically tunable filters, the output terminal of the output terminal connection single-pole three-throw switch C (4) of electric tuning filter unit A (3), electricity
The output terminal of the output terminal connection single-pole three-throw switch D (7) of tuning filtering unit B (6), the input terminal of single-pole three-throw switch C (4)
Connect an output terminal of rear class single-pole double-throw switch (SPDT) B (8), the input terminal connection rear class single-pole double throw of single-pole three-throw switch D (7)
Another output terminal of B (8) is switched, digital signal processing unit (11) connects each switch unit control terminal and digital-to-analogue conversion list
First (10) input terminal, the output terminal connection operation amplifier unit (9) of D/A conversion unit (10), operation amplifier unit (9) output
End is connected to the tuning control terminal of electric tuning filter unit A (3) and electric tuning filter unit B (6).
2. ultra-wide band radio-frequency electric tuning filter network according to claim 1, it is characterised in that：The electric tuning filtering
Unit A (3) includes：Electrically tunable filter A (12), tunable bandwidth are 30MHz to 100MHz, electrically tunable filter B (13)
Its tunable bandwidth be 90MHz to 210MHz, electrically tunable filter C (14), tunable bandwidth be 200MHz to 400MHz, three
A electrically tunable filter is concurrency relation；
Electric tuning filter unit B (6) includes：Electrically tunable filter D (15), tunable bandwidth are 400MHz to 1GHz, and electricity is adjusted
Humorous wave filter E (16), tunable bandwidth be 1GHz to 2GHz, electrically tunable filter F (17), tunable bandwidth for 2GHz extremely
4GHz, three electrically tunable filters are concurrency relation；Filter network covers 30MHz to 4GHz frequency bands, electrically tunable filter tuning
Time is less than 10us, and tunable three dB bandwidth is the 10% of electrically tunable filter bandwidth.
3. ultra-wide band radio-frequency electric tuning filter network according to claim 1, it is characterised in that：Host computer signal controls number
Word signal processing unit (11) output switch control level signal control single-pole double-throw switch (SPDT) A (1), single-pole double-throw switch (SPDT) B (8),
Single-pole three-throw switch A (2), single-pole three-throw switch B (5), single-pole three-throw switch C (4), single-pole three-throw switch D (7), selection are opened
Low-band signal frequency band is 30MHz to 400MHz all the way for arbitrary in six tunnels filtering access, and high frequency band signal frequency band is 400MHz
To 4GHz, electric tuning filter unit A is passed through by single-pole double-throw switch (SPDT) A (1) and single-pole double-throw switch (SPDT) B (8) control low-band signals
(3) access, the access that high frequency band signal passes through electric tuning filter unit B (6).
4. ultra-wide band radio-frequency electric tuning filter network according to claim 1, it is characterised in that：Host computer signal controls number
Word signal processing unit (11) outputs level signals export analog voltage signal, using fortune by D/A conversion unit (10)
It calculates amplifying unit (9) and is enlarged into electrically tunable filter A (12), electrically tunable filter B (13), electrically tunable filter C (14), electricity tune
Humorous filter D (15), electrically tunable filter E (16), electrically tunable filter F (17) electric tuning filter control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380698.4A CN108173529A (en) | 2017-12-20 | 2017-12-20 | A kind of ultra-wide band radio-frequency electric tuning filter network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380698.4A CN108173529A (en) | 2017-12-20 | 2017-12-20 | A kind of ultra-wide band radio-frequency electric tuning filter network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108173529A true CN108173529A (en) | 2018-06-15 |
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ID=62522807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711380698.4A Pending CN108173529A (en) | 2017-12-20 | 2017-12-20 | A kind of ultra-wide band radio-frequency electric tuning filter network |
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| CN102723960A (en) * | 2012-06-05 | 2012-10-10 | 中国电子科技集团公司第四十一研究所 | Radio frequency signal preselector for electric tuning |
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| CN105322917A (en) * | 2015-11-20 | 2016-02-10 | 南京熊猫汉达科技有限公司 | A 30MHz-512MHz wide frequency band frequency hopping filter |
| CN205212801U (en) * | 2015-12-12 | 2016-05-04 | 宝鸡烽火诺信科技有限公司 | Electrically tunable filter |
| CN106788301A (en) * | 2016-12-30 | 2017-05-31 | 陕西烽火电子股份有限公司 | The gain electrically tunable filter and its communicator of VHF/UHF frequency ranges |
| WO2017122052A1 (en) * | 2016-01-15 | 2017-07-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Miniature tunable filters |
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2017
- 2017-12-20 CN CN201711380698.4A patent/CN108173529A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202309641U (en) * | 2011-11-02 | 2012-07-04 | 广东圣大电子有限公司 | Integrated miniwatt frequency hopping electrically tunable filter |
| CN102723960A (en) * | 2012-06-05 | 2012-10-10 | 中国电子科技集团公司第四十一研究所 | Radio frequency signal preselector for electric tuning |
| CN104022750A (en) * | 2014-05-28 | 2014-09-03 | 中国电子科技集团公司第三十研究所 | Broadband electrically tunable filter circuit |
| CN105322917A (en) * | 2015-11-20 | 2016-02-10 | 南京熊猫汉达科技有限公司 | A 30MHz-512MHz wide frequency band frequency hopping filter |
| CN205212801U (en) * | 2015-12-12 | 2016-05-04 | 宝鸡烽火诺信科技有限公司 | Electrically tunable filter |
| WO2017122052A1 (en) * | 2016-01-15 | 2017-07-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Miniature tunable filters |
| CN106788301A (en) * | 2016-12-30 | 2017-05-31 | 陕西烽火电子股份有限公司 | The gain electrically tunable filter and its communicator of VHF/UHF frequency ranges |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180615 |
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| WD01 | Invention patent application deemed withdrawn after publication |