CN207968467U - A kind of up-converter circuit for anti-interference antenna - Google Patents
A kind of up-converter circuit for anti-interference antenna Download PDFInfo
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- CN207968467U CN207968467U CN201820452253.6U CN201820452253U CN207968467U CN 207968467 U CN207968467 U CN 207968467U CN 201820452253 U CN201820452253 U CN 201820452253U CN 207968467 U CN207968467 U CN 207968467U
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Abstract
The utility model discloses a kind of up-converter circuits for anti-interference antenna,It is related to anti-interference antenna of satellite navigation technical field,The utility model includes sequentially connected mixting circuit,Attenuator circuit,Second filter circuit and amplifying circuit,Mixting circuit is connected with the first filter circuit being connect with intermediate-freuqncy signal,First filter circuit includes multigroup LC filter circuits,Mixting circuit includes frequency mixer N7,The output end of first filter circuit is connect with 6 feet of frequency mixer N7,3 feet of frequency mixer N7 are connected with inductance L18,The other end of inductance L18 is connected with capacitance C35,The other end of capacitance C35 connects local oscillation signal,1 foot of frequency mixer N7 connects attenuator circuit,Amplification circuit output end is connected with third filter circuit,The utility model uses single-conversion,Select miniaturization,The component of low-power consumption,Reduce PCB layout area,Expand the scope of application.
Description
Technical field
The utility model is related to anti-interference antenna of satellite navigation technical fields, more particularly to one kind for anti-interference
The up-converter circuit of antenna.
Background technology
Anti-interference antenna of satellite navigation is to carry out that processing is inhibited to realize anti-interference function to interference signal in intermediate-freuqncy signal,
Processing for ease of rear end receiver to signal needs intermediate-freuqncy signal transforming to radio frequency, up-converter circuit be realize signal by
Medium-frequency transformation is to the necessary built-up circuit of radio frequency, and up-converter circuit layout will carry out when realizing according to antenna material object, with full
Sufficient antenna requirements.Up-converter circuit needs to carry out selection design according to input intermediate-freuqncy signal, performance indicator requirement etc., is related to content
Selection including frequency mixer, filter, output local oscillation signal gain etc..
Up-converter circuit general at present mostly uses double conversion, and component volume is larger, power consumption is higher, and this is just meaned
It and needs to occupy larger circuit layout area, be not applied for the arrangement space of ultrathin anti-interference antenna.
Utility model content
The purpose of this utility model is that：Double conversion, component volume are used in order to solve existing up-converter circuit
It is larger, power consumption is higher, circuit layout area is larger, the problem of being not applied for the arrangement space of ultrathin anti-interference antenna, this
Utility model provides a kind of up-converter circuit for anti-interference antenna, using single-conversion, selects the member of miniaturization, low-power consumption
Device reduces PCB layout area, expands the scope of application.
The utility model specifically uses following technical scheme to achieve the goals above：
A kind of up-converter circuit for anti-interference antenna, including sequentially connected mixting circuit, attenuator circuit, the second filter
Wave circuit and amplifying circuit, it is characterised in that：The mixting circuit is connected with the first filter circuit being connect with intermediate-freuqncy signal, the
One filter circuit includes multigroup LC filter circuits, and mixting circuit includes frequency mixer N7, the output end of the first filter circuit be mixed
6 feet of device N7 connect, and 3 feet of frequency mixer N7 are connected with inductance L18, and the other end of inductance L18 is connected with capacitance C35, capacitance C35
The other end connect local oscillation signal, 1 foot of frequency mixer N7 connects attenuator circuit, and the amplification circuit output end is connected with third filter
Wave circuit.
Further, multigroup LC filter circuits include filter circuit A, filter circuit B, filter circuit C and filtered electrical
Road D, the specific of the first filter circuit are connected as：Intermediate-freuqncy signal is connected with capacitance C16, and the other end of capacitance C16 is separately connected electricity
R18 and R19 is hindered, the other end of resistance R19 is connected separately with resistance R20 and capacitance C17, and resistance R18 and R20 are grounded respectively, electricity
The other end for holding C17 is separately connected inductance L8 and filter circuit A, and filter circuit A includes parallel with one another and the other end is grounded
The other end of inductance L7 and capacitance C18, inductance L8 are separately connected inductance L10 and filter circuit B, and filter circuit B includes mutually simultaneously
The other end for the inductance L9 and capacitance C19, inductance L10 that connection and the other end are grounded is separately connected inductance L13 and filter circuit C,
The inductance L11 and capacitance C23 that filter circuit C includes parallel with one another and the other end is grounded, the other end of inductance L13 are separately connected
Capacitance C20 and filter circuit D, the inductance L14 and capacitance C27 that filter circuit D includes parallel with one another and the other end is grounded, capacitance
The other end of C20 is separately connected the other end of inductance L16 parallel with one another and capacitance C29, inductance L16 and capacitance C29 and is mixed
6 feet of device N7 connect.
Further, the attenuator circuit includes the capacitance C36 being connect with 1 foot of frequency mixer N7, the other end of capacitance C36
It is connected with inductance L19, the other end of inductance L19 is separately connected inductance L20 and the second filter circuit, another termination of inductance L20
Ground, 2 feet and 5 feet of frequency mixer N7 are grounded respectively, and 4 feet of frequency mixer N7 are connected with inductance L15, the other end difference of inductance L15
It is connected with capacitance C28, capacitance C25 and resistance R21, the other end of capacitance C28 and capacitance C25 are grounded respectively, resistance R21 connections
Onto supply voltage+5VZHU.
Further, second filter circuit includes SAW filter Z1,2 feet of SAW filter Z1 with
Inductance L19 connections, 1 foot, 3 feet, 4 feet and 6 feet of SAW filter Z1 are grounded respectively, 5 feet of SAW filter Z1
It is connected separately with resistance R24 and resistance R25, the other end of resistance R25 is connected separately with resistance R26 and capacitance C41, resistance R24
It is grounded respectively with the other end of resistance R26,9 feet of the other end connection RF switch N9 of capacitance C41,4 feet of RF switch N9
The foot of the foot of~8 feet, 10 feet~11 and 13 feet~17 is grounded, and 1 foot of RF switch N9 is connected separately with capacitance C45 and inductance
The other end of L21, capacitance C45 are grounded, and the other end of inductance L21 is connected on supply voltage+5VZB, 2 feet of RF switch N9
It is connected with capacitance C99, the other end ground connection of capacitance C99,3 feet of RF switch N9 are connect with amplifying circuit, RF switch N9's
12 feet are connected with capacitance C40, and the other end of capacitance C40 is connected on LNAOUT.
Further, the amplifying circuit includes amplifier N11, and third filter circuit includes SAW filter Z2,
Amplifying circuit is connected as with the specific of third filter circuit：3 feet of amplifier N11 are connected with capacitance C44, and capacitance C44's is another
End is connect with 3 feet of RF switch N9, and 2 feet of amplifier N11 and 4 feet ground connection, 1 foot of amplifier N11 are connected separately with inductance
The other end of L23 and capacitance C47, inductance L23 are connected separately with resistance R32 and capacitance C48, and the other end of resistance R32 is connected to
On supply voltage+5VZB, the other end of capacitance C48 is grounded, and the other end of capacitance C47 connects with 2 feet of SAW filter Z2
It connects, 1 foot, 3 feet, 4 feet and 6 feet of SAW filter Z2 are grounded respectively, and 5 feet of SAW filter Z2 are output end.
The beneficial effects of the utility model are as follows：
1, the mixting circuit of the utility model is connected with the first filter circuit being connect with intermediate-freuqncy signal, before mixing first
Intermediate-freuqncy signal is filtered, can ensure the quality of the intermediate-freuqncy signal in input mixer N7, and become using primary
The form of frequency selects the component of miniaturization, low-power consumption, reduces PCB layout area, is suitable for ultrathin anti-interference day
The arrangement space of line, expands the scope of application.
2, the utility model can avoid the occurrence of image interference by using the second filter circuit and third filter circuit, in
The output signal of frequency signal and local oscillation signal after frequency mixer N7 is superimposed is after attenuator circuit is decayed, then passes through second successively
Filter circuit, amplifying circuit and third filter circuit, after the performance parameters such as last output amplitude, frequency and clutter recognition are satisfied by
The signal for holding receiver to need, it can be ensured that quality of output signals is good.
Description of the drawings
Fig. 1 is the schematic diagram of the function of the utility model.
Fig. 2 is the circuit diagram of the utility model.
Specific implementation mode
In order to which those skilled in the art are better understood from the utility model, below in conjunction with the accompanying drawings with following embodiment to this
Utility model is described in further detail.
Embodiment 1
As depicted in figs. 1 and 2, the present embodiment provides a kind of up-converter circuits for anti-interference antenna, including connect successively
Mixting circuit, attenuator circuit, the second filter circuit and the amplifying circuit connect, the mixting circuit is connected with to be connect with intermediate-freuqncy signal
The first filter circuit, the first filter circuit includes multigroup LC filter circuits, and mixting circuit includes the mixing of model CMY210
Device N7, the output end of the first filter circuit are connect with 6 feet of frequency mixer N7, and 3 feet of frequency mixer N7 are connected with inductance L18, inductance
The other end of L18 is connected with capacitance C35, and the other end of capacitance C35 connects local oscillation signal, the 1 foot connection decaying electricity of frequency mixer N7
Road, the amplification circuit output end are connected with third filter circuit.
Multigroup LC filter circuits include filter circuit A, filter circuit B, filter circuit C and filter circuit D, the first filter
The specific of wave circuit is connected as：Intermediate-freuqncy signal is connected with capacitance C16, and the other end of capacitance C16 is separately connected resistance R18 and R19,
The other end of resistance R19 is connected separately with resistance R20 and capacitance C17, and resistance R18 and R20 are grounded respectively, and capacitance C17's is another
End is separately connected inductance L8 and filter circuit A, the inductance L7 and capacitance that filter circuit A includes parallel with one another and the other end is grounded
The other end of C18, inductance L8 are separately connected inductance L10 and filter circuit B, and filter circuit B includes parallel with one another and the other end is equal
The other end of the inductance L9 and capacitance C19 of ground connection, inductance L10 are separately connected inductance L13 and filter circuit C, and filter circuit C includes
The inductance L11 and capacitance C23 that the parallel with one another and other end is grounded, the other end of inductance L13 are separately connected capacitance C20 and filtering
The other end of circuit D, the inductance L14 and capacitance C27 that filter circuit D includes parallel with one another and the other end is grounded, capacitance C20 point
6 feet of the other end and frequency mixer N7 that do not connect inductance L16 parallel with one another and capacitance C29, inductance L16 and capacitance C29 connect
It connects.
The mixting circuit of the present embodiment is connected with the first filter circuit being connect with intermediate-freuqncy signal, before mixing first centering
Frequency signal is filtered, and can ensure the quality of the intermediate-freuqncy signal in input mixer N7, and using single-conversion
Form selects the component of miniaturization, low-power consumption, reduces PCB layout area, is suitable for ultrathin anti-interference antenna
Arrangement space expands the scope of application.
Embodiment 2
The attenuator circuit includes the capacitance C36 being connect with 1 foot of frequency mixer N7, and the other end of capacitance C36 is connected with electricity
Feel L19, the other end of inductance L19 is separately connected inductance L20 and the second filter circuit, the other end ground connection of inductance L20, frequency mixer
2 feet and 5 feet of N7 are grounded respectively, and 4 feet of frequency mixer N7 are connected with inductance L15, and the other end of inductance L15 is connected separately with electricity
The other end for holding C28, capacitance C25 and resistance R21, capacitance C28 and capacitance C25 is grounded respectively, and resistance R21 is connected to power supply electricity
On pressure+5VZHU.
Second filter circuit includes the SAW filter Z1 of model SF2186E, SAW filter Z1
2 feet connect with inductance L19,1 foot, 3 feet, 4 feet and 6 feet of SAW filter Z1 are grounded respectively, SAW filter
It is 0 Ω, the other end of resistance R25 that 5 feet of Z1, which are connected separately with resistance R24 and the reserved resistance value of resistance R25, the resistance R25,
It is connected separately with resistance R26 and capacitance C41, the other end of resistance R24 and resistance R26 are grounded respectively, and the other end of capacitance C41 connects
Connect 9 feet of RF switch N9, the foot of the foot of the foot of 4 feet of RF switch N9~8,10 feet~11 and 13 feet~17 is grounded, RF switch
1 foot of N9 is connected separately with capacitance C45 and inductance L21, the other end ground connection of capacitance C45, and the other end of inductance L21 is connected to electricity
On the voltage+5VZB of source, 2 feet of RF switch N9 are connected with capacitance C99, and the other end of capacitance C99 is grounded, and the 3 of RF switch N9
Foot is connect with amplifying circuit, and 12 feet of RF switch N9 are connected with capacitance C40, and the other end of capacitance C40 is connected on LNAOUT.
Embodiment 3
The amplifying circuit includes the amplifier N11 of model SPF5043Z, and third filter circuit includes model
The SAW filter Z2 of SF2186E, amplifying circuit are connected as with the specific of third filter circuit：3 feet of amplifier N11 connect
It is connected to capacitance C44, the other end of capacitance C44 is connect with 3 feet of RF switch N9, and 2 feet of amplifier N11 and 4 feet ground connection are put
1 foot of big device N11 is connected separately with inductance L23 and capacitance C47, and the other end of inductance L23 is connected separately with resistance R32 and capacitance
The other end of C48, resistance R32 are connected on supply voltage+5VZB, the other end ground connection of capacitance C48, the other end of capacitance C47
It is connect with 2 feet of SAW filter Z2,1 foot, 3 feet, 4 feet and 6 feet of SAW filter Z2 are grounded respectively, sound table
5 feet of surface wave filter Z2 are output end.
The principles of the present invention are：
The local oscillation signal of the intermediate-freuqncy signal of 46.52MHz by anti-interference process and the 1222MHz of local oscillation circuit output,
Frequency conversion is carried out by frequency mixer CMY210, radiofrequency signal 1268.52MHz is exported, after attenuator circuit is decayed, using sound
After surface wave filter SF2186E and amplifier SPF5043Z, the performance parameters such as output amplitude, frequency, clutter recognition are satisfied by
The signal that rear end receiver needs.
The present embodiment can avoid the occurrence of image interference, intermediate frequency letter by using the second filter circuit and third filter circuit
Number with output signal of the local oscillation signal after frequency mixer N7 is superimposed after attenuator circuit is decayed, then pass through the second filtering successively
Circuit, amplifying circuit and third filter circuit, the performance parameters such as last output amplitude, frequency and clutter recognition terminate after being satisfied by
The signal that receipts machine needs, it can be ensured that quality of output signals is good.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, it is equivalent made by every specification and accompanying drawing content with the utility model
Structure change similarly should be included in the scope of protection of the utility model.
Claims (5)
1. a kind of up-converter circuit for anti-interference antenna, including sequentially connected mixting circuit, attenuator circuit, the second filtering
Circuit and amplifying circuit, it is characterised in that：The mixting circuit is connected with the first filter circuit being connect with intermediate-freuqncy signal, and first
Filter circuit includes multigroup LC filter circuits, and mixting circuit includes frequency mixer N7, the output end and frequency mixer of the first filter circuit
6 feet of N7 connect, and 3 feet of frequency mixer N7 are connected with inductance L18, and the other end of inductance L18 is connected with capacitance C35, capacitance C35's
The other end connects local oscillation signal, and 1 foot of frequency mixer N7 connects attenuator circuit, and the amplification circuit output end is connected with third filtering
Circuit.
2. a kind of up-converter circuit for anti-interference antenna according to claim 1, it is characterised in that：Multigroup LC
Filter circuit includes filter circuit A, filter circuit B, filter circuit C and filter circuit D, the specific connection of the first filter circuit
For：Intermediate-freuqncy signal is connected with capacitance C16, and the other end of capacitance C16 is connected separately with resistance R18 and R19, and resistance R19's is another
End is connected separately with resistance R20 and capacitance C17, and resistance R18 and R20 are grounded respectively, and the other end of capacitance C17 is separately connected inductance
L8 and filter circuit A, the inductance L7 and capacitance C18 that filter circuit A includes parallel with one another and the other end is grounded, inductance L8's is another
One end is separately connected inductance L10 and filter circuit B, the inductance L9 that filter circuit B includes parallel with one another and the other end is grounded and
The other end of capacitance C19, inductance L10 are separately connected inductance L13 and filter circuit C, and filter circuit C includes parallel with one another and another
The other end of the inductance L11 and capacitance C23, inductance L13 that are grounded is held to be separately connected capacitance C20 and filter circuit D, filter circuit
The other end of the inductance L14 and capacitance C27 that D includes parallel with one another and the other end is grounded, capacitance C20 are separately connected parallel with one another
Inductance L16 and the other end of capacitance C29, inductance L16 and capacitance C29 and 6 feet of frequency mixer N7 connect.
3. a kind of up-converter circuit for anti-interference antenna according to claim 1 or 2, it is characterised in that：It is described to decline
Powered down road includes the capacitance C36 being connect with 1 foot of frequency mixer N7, and the other end of capacitance C36 is connected with inductance L19, inductance L19's
The other end is separately connected inductance L20 and the second filter circuit, the other end ground connection of inductance L20,2 feet and 5 feet point of frequency mixer N7
Be not grounded, 4 feet of frequency mixer N7 are connected with inductance L15, the other end of inductance L15 be connected separately with capacitance C28, capacitance C25 and
The other end of resistance R21, capacitance C28 and capacitance C25 are grounded respectively, and resistance R21 is connected on supply voltage+5VZHU.
4. a kind of up-converter circuit for anti-interference antenna according to claim 3, it is characterised in that：Second filter
Wave circuit includes SAW filter Z1, and 2 feet of SAW filter Z1 are connect with inductance L19, SAW filter
1 foot, 3 feet, 4 feet and 6 feet of Z1 are grounded respectively, and 5 feet of SAW filter Z1 are connected with capacitance C41, and capacitance C41's is another
The foot of 9 feet of end connection RF switch N9, the foot of the foot of 4 feet of RF switch N9~8,10 feet~11 and 13 feet~17 is grounded, radio frequency
1 foot of switch N9 is connected separately with capacitance C45 and inductance L21, the other end ground connection of capacitance C45, the other end connection of inductance L21
Onto supply voltage+5VZB, 2 feet of RF switch N9 are connected with capacitance C99, the other end ground connection of capacitance C99, RF switch N9
3 feet connect with amplifying circuit, 12 feet of RF switch N9 are connected with capacitance C40, and the other end of capacitance C40 is connected to LNAOUT
On.
5. a kind of up-converter circuit for anti-interference antenna according to claim 4, it is characterised in that：The amplification electricity
Road includes amplifier N11, and third filter circuit includes SAW filter Z2, and amplifying circuit is specific with third filter circuit
It is connected as：3 feet of amplifier N11 are connected with capacitance C44, and the other end of capacitance C44 is connect with 3 feet of RF switch N9, amplification
2 feet of device N11 and 4 feet ground connection, 1 foot of amplifier N11 are connected separately with inductance L23 and capacitance C47, the other end of inductance L23
It is connected separately with resistance R32 and capacitance C48, the other end of resistance R32 is connected on supply voltage+5VZB, and capacitance C48's is another
End ground connection, the other end of capacitance C47 connect with 2 feet of SAW filter Z2,1 foot of SAW filter Z2,3 feet, 4
Foot and 6 feet are grounded respectively, and 5 feet of SAW filter Z2 are output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820452253.6U CN207968467U (en) | 2018-04-02 | 2018-04-02 | A kind of up-converter circuit for anti-interference antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820452253.6U CN207968467U (en) | 2018-04-02 | 2018-04-02 | A kind of up-converter circuit for anti-interference antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207968467U true CN207968467U (en) | 2018-10-12 |
Family
ID=63725390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820452253.6U Active CN207968467U (en) | 2018-04-02 | 2018-04-02 | A kind of up-converter circuit for anti-interference antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207968467U (en) |
-
2018
- 2018-04-02 CN CN201820452253.6U patent/CN207968467U/en active Active
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