CN208094546U - Radio frequency receiver and RF receiving/transmission device - Google Patents
Radio frequency receiver and RF receiving/transmission device Download PDFInfo
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- CN208094546U CN208094546U CN201721656111.3U CN201721656111U CN208094546U CN 208094546 U CN208094546 U CN 208094546U CN 201721656111 U CN201721656111 U CN 201721656111U CN 208094546 U CN208094546 U CN 208094546U
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Abstract
The utility model is related to a kind of radio frequency receivers, including：First filter and radiofrequency signal processor；Input terminal of the input terminal of first filter as radio frequency receiver receives radiofrequency signal, the input terminal of the output end connection radiofrequency signal processor of first filter；First filter is used to filter out the frequency in radiofrequency signal other than special frequency channel, exports pending radiofrequency signal to radiofrequency signal processor.Radiofrequency signal processor is used for pending radiofrequency signal down coversion and is demodulated into the I channel signals and Q channel signals of intermediate-freuqncy signal.Above-mentioned radio frequency receiver, the radiofrequency signal received is filtered by first filter, the pending radiofrequency signal of the fixed frequency point of output is to radiofrequency signal processor, so that pending radiofrequency signal Direct-conversion and be demodulated into IQ modulation intermediate-freuqncy signal, without additional IQ demodulators, the volume for reducing radio frequency receiver, reduces the cost of radio frequency receiver.
Description
Technical field
The utility model is related to wireless communication receiver fields, are filled more particularly to a kind of radio frequency receiver and radio-frequency receiving-transmitting
It sets.
Background technology
Dipper system is the Global Satellite Navigation System that China voluntarily develops, with the continuous development of dipper system, the Big Dipper
System gradually develops into the satellite navigation system of global system.
Satellite navigation with communicate, radio-frequency transmitter is an important component part.The dipper system of global system
It is required that the intermediate-freuqncy signal of IQ modulation is received, but inventor has found that the radio-frequency transmitter technology of traditional dipper system can not be direct
Exporting the intermediate-freuqncy signal of IQ modulation, it is difficult to the dipper system for meeting global system receives the requirement of IQ modulated medium frequency signals,
It usually needs IQ demodulators additionally are arranged and intermediate-freuqncy signal is demodulated into I, Q channel signal.
Utility model content
Based on this, it is necessary to for traditional dipper system radio frequency receiver need be arranged IQ demodulators the problem of, carry
For a kind of radio frequency signal receiver and RF receiving/transmission device.
A kind of radio frequency receiver, including：First power splitter, multiple first filters and respectively with the first filter
The radio circuit of connection；
The input terminal of the input terminal of first power splitter is connect with active antenna, for accessing penetrating for active antenna reception
Frequency signal；
The output end of first power splitter is connect with the input terminal of the first filter；The first filter it is defeated
Outlet connects the input terminal of the radio circuit；
The first filter is used to filter out the frequency in the radiofrequency signal other than special frequency channel, exports pending radio frequency
Signal is to the radio circuit；
The radio circuit for by pending radiofrequency signal down coversion and be demodulated into intermediate-freuqncy signal I channel signals and
Q channel signals.
Above-mentioned radio frequency receiver is filtered the radiofrequency signal received by first filter, obtains required radio frequency
Signal is to radiofrequency signal processor, then by radio circuit down coversion and is demodulated into the intermediate-freuqncy signal of IQ modulation, without additional
IQ demodulators reduce the volume of radio frequency receiver, reduce the cost of radio frequency receiver.
A kind of RF receiving/transmission device, including multiplexer, radiofrequency launcher and above-mentioned radio frequency receiver；
Wherein, the output end of the radiofrequency launcher is connect with the emission of radio frequency signals input terminal of the multiplexer, described
The input terminal of radio frequency receiver is connect with the rf signal reception output end of the multiplexer；The multiplexer also with active antenna
Connection.
Above-mentioned RF receiving/transmission device connects active antenna, radiofrequency launcher and radio frequency receiver by multiplexer, this is penetrated
Frequency circuit can emit radiofrequency signal and receive radiofrequency signal, and wherein radio frequency receiver is not necessarily to other IQ demodulators so that
Radiofrequency signal Direct-conversion and the intermediate-freuqncy signal for being demodulated into IQ modulation are not necessarily to additional IQ demodulators, reduce radio circuit
Volume reduces the cost of radio circuit.
Description of the drawings
Fig. 1 is the structural schematic diagram of the radio frequency receiver in the utility model one embodiment；
Fig. 2 is the structural schematic diagram of the radio frequency receiver in the utility model another embodiment；
Fig. 3 is the structural schematic diagram of the RF receiving/transmission device in the utility model one embodiment.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the scope of protection of the utility model.
It is the structural schematic diagram of the radio frequency receiver in the utility model one embodiment referring to Fig. 1, Fig. 1.
A kind of radio frequency receiver, including：First power splitter 110, multiple first filters 120 and respectively with first filtering
The radio circuit 130 that device 120 connects；
The input terminal of the input terminal of first power splitter 110 is connect with active antenna, for accessing penetrating for active antenna reception
Frequency signal；
The output end of first power splitter 110 is connect with the input terminal of first filter 120；The output of first filter 120
The input terminal of end connection radio circuit 130；
First filter 120 is used to filter out the frequency in radiofrequency signal other than special frequency channel, exports pending radiofrequency signal
To radio circuit 130；
Radio circuit 130 is used for pending radiofrequency signal down coversion and is demodulated into the I channel signals and Q of intermediate-freuqncy signal
Channel signal.
In the present embodiment, first filter 120 mainly filters out the out-of-band interference before mixing, prevents out-of-band interference signal through becoming
Enter in intermediate-freuqncy signal band after frequency.Wherein, its centre frequency is arranged according to practical situations in first filter 120.The radio frequency
Receiver is filtered the radiofrequency signal received by first filter, obtains required radiofrequency signal to radiofrequency signal processing
Device, then by radio circuit down coversion and be demodulated into IQ modulation intermediate-freuqncy signal, just disclosure satisfy that without additional IQ demodulators
The dipper system of global system receives the requirement of IQ modulated medium frequency signals, reduces the volume of radio frequency receiver, reduces radio frequency reception
The manufacturing cost of device.Meanwhile the range of linearity of the radio frequency receiver is big, has the performance of good anti-narrowband interference.
The quantity of radio frequency receiver first filter 120 is three in one of the embodiments, including the filtering of B1 frequency ranges
Device 120a, B2 frequency band filter 120b and B3 frequency band filter 120c；The quantity of radio circuit 130 is three, including first
Radio circuit 130a, the second radio circuit 130b and third radio circuit 130c；
First output end of the first power splitter 110 is connect with the input terminal of B1 frequency band filters 120a, B1 frequency band filters
The output end of 120a is connect with the input terminal of the first radio circuit 130a；Wherein, the first radio circuit 130a is for handling B1 frequencies
The radiofrequency signal of section；
The second output terminal of first power splitter 110 is connect with the input terminal of B2 frequency band filters 120b, B2 frequency band filters
The output end of 120b is connect with the input terminal of the second radio circuit 130b；Wherein, the second radio circuit 130b is for handling B2 frequencies
The radiofrequency signal of section；
The third output end of first power splitter 110 is connect with the input terminal of B3 frequency band filters 120c, B3 frequency band filters
The output end of 120c is connect with the input terminal of third radio circuit 130c；Wherein, third radio circuit 130c is for handling B3 frequencies
The radiofrequency signal of section.
In the present embodiment, radio frequency receiver can receive the radiofrequency signal of B1, B2, B3 frequency range in two generation of dipper system, and
Down coversion and demodulation, the intermediate-freuqncy signal of output IQ modulation are carried out to the radiofrequency signal of B1, B2, B3 frequency range.The radio frequency receiver energy
Enough radiofrequency signals to multiple frequency points carry out down coversion and IQ demodulation amplifications, and the range of linearity of the radio frequency receiver is big, tool
There is the performance of good anti-narrowband interference.
Further, in follow-up practical application, can continue to access the first filter that centre frequency is other frequency points
120 and corresponding radio circuit 200, to receive the radiofrequency signal for handling other frequency ranges.
Radio frequency receiver further includes the second power splitter 140 in one of the embodiments, S frequency band filters 120d and
4th radio circuit 130d；
First output end of the second power splitter 140 is connect with the input terminal of the first power splitter 110；Second power splitter 140
Second output terminal is connect with the input terminal of S frequency band filters 120d, the output end and the 4th radio circuit of S frequency band filters 120d
The input terminal of 130d connects；Wherein, the 4th radio circuit 130d is used to handle the radiofrequency signal of S frequency ranges；
The input terminal of second power splitter 140 is that the input terminal of radio frequency receiver is connect with active antenna.
In the present embodiment, radio frequency receiver can receive the radiofrequency signal of the S frequency ranges of a dipper system generation, and to S frequency ranges
Radiofrequency signal carry out down coversion and demodulation, the intermediate-freuqncy signal of IQ modulation is directly exported, without additional IQ demodulators.The radio frequency
Receiver is compatible with existing dipper system well, can carry out down coversion to the radiofrequency signal of multiple frequency ranges and IQ is demodulated
Amplification meets requirement of the dipper system to frequency bandwidth of global system in frequency and bandwidth.
Radio frequency receiver 200 further includes amplifier 150 in one of the embodiments,；
The input terminal of amplifier 150 is connect as the input terminal of radio frequency receiver with active antenna；The output of amplifier 150
End is connect with the input terminal of the second power splitter 140.
In the present embodiment, amplifier 150 can be amplified the radiofrequency signal received, and the first power splitter of compensation is brought
Insertion decaying.
Radio frequency receiver further includes bandpass filter 160 in one of the embodiments,；
The input terminal of bandpass filter 160 is connect with the output end of the second power splitter 140；The output of bandpass filter 160
End is connect with the input terminal of the first power splitter 110.
In the present embodiment, bandpass filter 250 can improve isolation, reduce the degree of coupling between each frequency.
Referring to Fig. 2, Fig. 2 is the structural schematic diagram of the radio frequency receiver in the utility model another embodiment.This implementation
In example, radio circuit 130 includes IQ demodulation frequency mixer 131, the first intermediate-frequency filter 132, the second intermediate-frequency filter 133 and intermediate frequency
IQ difference amplifiers 134；
IQ demodulates input terminal of the input terminal of frequency mixer 131 as radio circuit 130, receives pending radiofrequency signal；IQ
Demodulate the output end input with the input terminal of the first intermediate-frequency filter 132 and the second intermediate-frequency filter 123 respectively of frequency mixer 131
End connection；The output end of first intermediate-frequency filter 132 and the second intermediate-frequency filter 133 respectively with intermediate frequency IQ difference amplifiers
134 input terminal connection；
IQ demodulates frequency mixer 131 and carries out down coversion and demodulation to pending radiofrequency signal, exports the channels I of intermediate-freuqncy signal
Differential signal and the differential signal in the channels Q；The differential signal in the channels I is defeated after the first intermediate-frequency filter 132 is filtered
Enter to intermediate frequency IQ difference amplifiers 134；The differential signal in the channels Q is input to after the second intermediate-frequency filter 133 is filtered
Intermediate frequency IQ difference amplifiers 134；Intermediate frequency IQ difference amplifiers 134 export the I channel signals and Q channel signals of intermediate-freuqncy signal.
In the present embodiment, pending radiofrequency signal carries out down coversion and demodulation by IQ demodulation frequency mixers 131, exports intermediate frequency
A pair of of differential signal in the channels I of signal and the differential signal of the channels Q a pair, a pair of of differential signal and Q in the channels I are a pair of
For the differential signal in channel after the processing of intermediate-frequency filter and intermediate frequency IQ difference amplifiers 134, the I for exporting intermediate-freuqncy signal is logical
Road signal and Q channel signals, the radio circuit 130 make full use of mixing IQ demodulators and programmable IQ difference amplifiers 134,
So that radiofrequency signal Direct-conversion and be demodulated into IQ modulation intermediate-freuqncy signal, just disclosure satisfy that entirely without additional IQ demodulators
The dipper system of sphere receives the requirement of IQ modulated medium frequency signals, reduces the volume of the radiofrequency signal processor, reduces cost.
Meanwhile the range of linearity of the radiofrequency signal processor is big, has the performance of good anti-narrowband interference.
Optionally, IQ demodulates frequency mixer 131 and requires the orthogonal mixing in the channels the I channels Q, to reduce sample frequency, ensures radio frequency
The performance of signal processor, 1dB compression points are not less than+10dBm, and bandwidth coverage is big, and intermediate-frequency bandwidth can cover zero-frequency, amplitude
Inconsistency and Sensor gain and phase perturbations are good, and local oscillator leakage is small.In practical applications, IQ, which demodulates frequency mixer 131, can select chip
LT5575, the chip are the direct converted quadrature demodulators of 800MHz to 2.7GHz, aim at the application of high linearity reception machine and optimize,
Suitable for extensively and radiofrequency signal being needed to be converted directly into the logical of the channels I and Q channel baseband signals for working frequency
Believe receiver.
Optionally, the first intermediate-frequency filter 132 and the second intermediate-frequency filter 133 use high rejects trap, reduce number
Word samples aliasing, and inhibits to be more than 40dB or more at 1 times of bandwidth of the filter.
Optionally, intermediate frequency IQ difference amplifiers 134 require the channels I and the channels Q two-way to amplify, and have difference function,
Gain can be adjusted according to results of calculation and measurement result.In practical applications, intermediate frequency IQ difference amplifiers 134 can select
Chip HMC960, the working frequency of chip are about 6dB in 0~100MHz, programmable configuration gain, noise coefficient, can be with
LT5575 mixing demodulators are used cooperatively, and better meet the requirement of High Linear and IQ demodulation.
Radio circuit 130 further includes clock circuit 135 and frequency synthesizer 136 in one of the embodiments,；
Clock circuit 135 is sequentially connected with frequency synthesizer 136；135 output end of clock circuit and frequency synthesizer 136
Input terminal connects；The output end of frequency synthesizer 136 is connect with IQ demodulation frequency mixers 131；
Clock circuit 135 generates clock frequency and is input in frequency synthesizer 136；Frequency synthesizer 136 is according to clock frequency
Rate exports local oscillated signal to IQ demodulation frequency mixers 131.
In the present embodiment, clock circuit 135 provides reliable and stable clock frequency, frequency synthesis to frequency synthesizer 136
The clock frequency that device 136 is provided according to clock circuit 135, output local oscillated signal to IQ demodulate frequency mixer 131.Wherein, when
Clock frequency and local oscillated signal frequency are arranged according to practical situations.
It is the structural schematic diagram of the RF receiving/transmission device in the utility model one embodiment referring to Fig. 3, Fig. 3.This implementation
In example, a kind of RF receiving/transmission device 200 includes the radio frequency of multiplexer 210, radiofrequency launcher 220 and any of the above-described embodiment
Receiver 100；
Wherein, the output end of radiofrequency launcher 220 is connect with the emission of radio frequency signals input terminal of multiplexer 210, and radio frequency connects
The input terminal for receiving device is connect with the rf signal reception output end of multiplexer 210；Multiplexer 210 is also connect with active antenna.
RF receiving/transmission device in the present embodiment connects active antenna, radiofrequency launcher and radio frequency by multiplexer and connects
Device is received, which can emit radiofrequency signal and receive radiofrequency signal, wherein radio frequency receiver makes radiofrequency signal
Direct-conversion and the intermediate-freuqncy signal for being demodulated into IQ modulation are not necessarily to other IQ demodulators, reduce the volume of the radio circuit,
Reduce the production cost of equipment.Meanwhile the radio circuit is compatible with existing dipper system well, believes the radio frequency of multiple frequency ranges
Number can carry out IQ demodulation amplifications, and the range of linearity is big, there is the performance of good anti-narrowband interference, frequency, bandwidth with
And meet the requirement of the dipper system of global system in the linearity.
Radiofrequency launcher 220 includes L frequency range radiating circuits in one of the embodiments,；
L frequency range radiating circuits include L frequency ranges radio frequency chip 221, L frequency band filters 222 and L frequency ranges amplifier 223；
L frequency ranges radio frequency chip 221, L frequency band filters 222 and L frequency ranges amplifier 223 are sequentially connected, L frequency range radio frequency chips
221 input terminal is connect as the input terminal of L frequency range radiating circuits with transmitting signal generator；L frequency ranges radio frequency chip 221 it is defeated
Outlet connects the input terminal of L frequency band filters 222；The input terminal of the output end and L frequency ranges amplifier 223 of L frequency band filters 222
Connection；Emission of radio frequency signals of the output end of L frequency ranges amplifier 223 as the output end and multiplexer 210 of L frequency range radiating circuits
Input terminal connects.
In the present embodiment, L frequency ranges radio frequency chip 221 is a transmitting modulation chip, and the bpsk signal of 4.08M is modulated to
Local oscillator 1615.68MHz gets on, and is emitted in radio frequencies after filtered and amplification.
It is new to this practicality by taking the reception channel of the radio frequency receiver B3 frequency ranges in the radio circuit of Fig. 2 as an example referring to Fig. 2
The anti-narrowband jamming performance that channel is received in the radio circuit of type illustrates.
For anti-narrowband systems, by taking the signal of -125dBm as an example, before 30dB low-noise amplifier active antennas
Hold amplifier), namely -95dBm is input to channel, narrowband interference performance is NdB, then interference signal is -95+N) dB.Channel increases
Benefit is G, then interference signal is -95+N+G) dBm.This value can not be more than analog-to-digital conversion no more than the 1dB compression points of chip
The 1dB compression points of the maximum input requirements of device, generally+4dBm, the chip in the channel generally selected are both greater than+10dBm,
Then -95+N+G<4, under the premise of ensureing noise coefficient and receiving sensitivity, corresponding anti-narrowband is required can with channel gain
Simply to be indicated with following table：
| Anti- narrowband demand | Channel gain |
| 65dB | <34dB |
| 70dB | <29dB |
| 75dB | <24dB |
| 80dB | <19dB |
1 anti-narrowband ability of table is corresponding with channel gain
By that can be obtained in table, anti-narrowband demand is the system of 70dB, channel gain namely " rf filtering Insertion Loss+penetrate
Frequency gain amplifier+mixer conversion loss+intermediate frequency amplification+intermediate frequency filtering Insertion Loss " should not exceed 29dB.
By taking the reception channel of the radio frequency receiver B3 frequency ranges in the radio circuit of Fig. 2 as an example, radio circuit front end, which connects, makes an uproar
Sonic system number 1.8dB, the low noise of gain 30dB, emulation export the characteristic of entire link from low-noise amplifier to intermediate-freuqncy signal,
It is 1.81dB to finally obtain noise coefficient, and channel gain is that overall gain subtracts low-noise amplifier gain, is equal to 54.4-30=
24.4dB.According to the analysis of above-mentioned anti-narrowband performance, the receives link of the utility model can the anti-narrowbands 75dB interference, and per level-one
Device is all without departing from the 1dB compression points of the device, and the signal of final output 4.4dBm is also without departing from common analog-to-digital conversion
The input range of device.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiments or example.
Each technical characteristic of above example can be combined arbitrarily, to keep description succinct, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield is all considered to be the range of this specification record.
Above example only expresses the several embodiments of the utility model, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to utility model patent range therefore be interpreted as.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality
With novel protection domain.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
1. a kind of radio frequency receiver, which is characterized in that including：First power splitter (110), multiple first filters (120) and
The radio circuit (130) being connect respectively with the first filter (120)；
The input terminal of the input terminal of first power splitter (110) is connect with active antenna, for accessing active antenna reception
Radiofrequency signal；
The output end of first power splitter (110) is connect with the input terminal of the first filter (120)；First filtering
The output end of device (120) connects the input terminal of the radio circuit (130)；
The first filter (120) is used to filter out the frequency in the radiofrequency signal other than special frequency channel, and output is pending to penetrate
Frequency signal is to the radio circuit (130)；
The radio circuit (130) be used for by pending radiofrequency signal down coversion and be demodulated into the I channel signals of intermediate-freuqncy signal with
And Q channel signals.
2. radio frequency receiver according to claim 1, which is characterized in that the quantity of the first filter (120) is three
It is a, including B1 frequency band filters (120a), B2 frequency band filters (120b) and B3 frequency band filters (120c)；The radio frequency electrical
The quantity on road (130) is three, including the first radio circuit (130a), the second radio circuit (130b) and third radio circuit
(130c)；
First output end of first power splitter (110) is connect with the input terminal of the B1 frequency band filters (120a), described
The output end of B1 frequency band filters (120a) is connect with the input terminal of first radio circuit (130a)；Wherein, described first
Radio circuit (130a) is used to handle the radiofrequency signal of B1 frequency ranges；
The second output terminal of first power splitter (110) is connect with the input terminal of the B2 frequency band filters (120b), described
The output end of B2 frequency band filters (120b) is connect with the input terminal of second radio circuit (130b)；Wherein, described second
Radio circuit (130b) is used to handle the radiofrequency signal of B2 frequency ranges；
The third output end of first power splitter (110) is connect with the input terminal of the B3 frequency band filters (120c), described
The output end of B3 frequency band filters (120c) is connect with the input terminal of the third radio circuit (130c)；Wherein, the third
Radio circuit (130c) is used to handle the radiofrequency signal of B3 frequency ranges.
3. radio frequency receiver according to claim 2, which is characterized in that further include the second power splitter (140), the filter of S frequency ranges
Wave device (120d) and the 4th radio circuit (130d)；
First output end of second power splitter (140) is connect with the input terminal of first power splitter (110)；Described second
The second output terminal of power splitter (140) is connect with the input terminal of the S frequency band filters (120d), the S frequency band filters
The output end of (120d) is connect with the input terminal of the 4th radio circuit (130d)；Wherein, the 4th radio circuit
(130d) is used to handle the radiofrequency signal of S frequency ranges；
The input terminal of second power splitter (140) is that the input terminal of radio frequency receiver is connect with active antenna.
4. radio frequency receiver according to claim 3, which is characterized in that further include amplifier (150)；
The input terminal of the amplifier (150) is connect as the input terminal of radio frequency receiver with active antenna；The amplifier
(150) output end is connect with the input terminal of second power splitter (140).
5. radio frequency receiver according to claim 4, which is characterized in that further include bandpass filter (160)；
The input terminal of the bandpass filter (160) is connect with the output end of second power splitter (140)；The bandpass filtering
The output end of device (160) is connect with the input terminal of the first power splitter (110).
6. radio frequency receiver according to claim 1, which is characterized in that the radio circuit (130) includes that IQ demodulation is mixed
Frequency device (131), the first intermediate-frequency filter (132), the second intermediate-frequency filter (133) and intermediate frequency IQ difference amplifiers (134)；
Input terminal of the input terminal of the IQ demodulation frequency mixers (131) as the radio circuit (130), receives pending radio frequency
Signal；The output end of IQ demodulation frequency mixer (131) input terminal and second with first intermediate-frequency filter (132) respectively
The input terminal of intermediate-frequency filter (123) connects；First intermediate-frequency filter (132) and the second intermediate-frequency filter (133)
Output end is connect with the input terminal of the intermediate frequency IQ difference amplifiers (134) respectively；
IQ demodulates frequency mixer (131) and carries out down coversion and demodulation to pending radiofrequency signal, exports the difference in the channels I of intermediate-freuqncy signal
Sub-signal and the differential signal in the channels Q；The differential signal in the channels I is defeated after the first intermediate-frequency filter (132) is filtered
Enter to intermediate frequency IQ difference amplifiers (134)；The differential signal in the channels Q is defeated after the second intermediate-frequency filter (133) is filtered
Enter to intermediate frequency IQ difference amplifiers (134)；Intermediate frequency IQ difference amplifiers (134) export the I channel signals of intermediate-freuqncy signal and Q leads to
Road signal.
7. radio frequency receiver according to claim 6, which is characterized in that the radio circuit (130) further includes clock electricity
Road (135) and frequency synthesizer (136)；
The clock circuit (135) is sequentially connected with frequency synthesizer (136)；Clock circuit (135) output end with it is described
The input terminal of frequency synthesizer (136) connects；The output end of the frequency synthesizer (136) demodulates frequency mixer with the IQ
(131) it connects；
The clock circuit (135) generates clock frequency and is input in the frequency synthesizer (136)；The frequency synthesizer
(136) local oscillated signal is exported to IQ demodulation frequency mixers (131) according to clock frequency.
8. a kind of RF receiving/transmission device, which is characterized in that including multiplexer (210), radiofrequency launcher (220) and as right is wanted
Seek the radio frequency receiver (100) described in 1；
Wherein, the emission of radio frequency signals input terminal of the output end Yu the multiplexer (210) of the radiofrequency launcher (220) connects
It connects, the input terminal of the radio frequency receiver is connect with the rf signal reception output end of the multiplexer (210)；The multiplexer
(210) it is also connect with active antenna.
9. RF receiving/transmission device according to claim 8, which is characterized in that radiofrequency launcher (220) includes L frequency ranges transmitting electricity
Road；
The L frequency ranges radiating circuit includes L frequency ranges radio frequency chip (221), L frequency band filters (222) and L frequency range amplifiers
(223)；
The L frequency ranges radio frequency chip (221), L frequency band filters (222) and L frequency ranges amplifier (223) are sequentially connected, the L frequencies
The input terminal of section radio frequency chip (221) is connect as the input terminal of the L frequency ranges radiating circuit with transmitting signal generator；It is described
The output end of L frequency ranges radio frequency chip (221) is connect with the input terminal of the L frequency band filters (222)；The L frequency band filters
(222) output end is connect with the input terminal of L frequency ranges amplifier (223)；The output end conduct of the L frequency ranges amplifier (223)
The output end of the L frequency ranges radiating circuit is connect with the emission of radio frequency signals input terminal of the multiplexer (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721656111.3U CN208094546U (en) | 2017-11-30 | 2017-11-30 | Radio frequency receiver and RF receiving/transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721656111.3U CN208094546U (en) | 2017-11-30 | 2017-11-30 | Radio frequency receiver and RF receiving/transmission device |
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| Publication Number | Publication Date |
|---|---|
| CN208094546U true CN208094546U (en) | 2018-11-13 |
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ID=64067901
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721656111.3U Active CN208094546U (en) | 2017-11-30 | 2017-11-30 | Radio frequency receiver and RF receiving/transmission device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371472A (en) * | 2018-12-06 | 2020-07-03 | 斯沃奇集团研究和开发有限公司 | Transmitter-receiver comprising an electronic chip |
| CN114389621A (en) * | 2022-01-04 | 2022-04-22 | 北京全路通信信号研究设计院集团有限公司 | Signal acquisition method and system |
-
2017
- 2017-11-30 CN CN201721656111.3U patent/CN208094546U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371472A (en) * | 2018-12-06 | 2020-07-03 | 斯沃奇集团研究和开发有限公司 | Transmitter-receiver comprising an electronic chip |
| CN114389621A (en) * | 2022-01-04 | 2022-04-22 | 北京全路通信信号研究设计院集团有限公司 | Signal acquisition method and system |
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