CN202818283U - Radio frequency receiving and emitting apparatus - Google Patents
Radio frequency receiving and emitting apparatus Download PDFInfo
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- CN202818283U CN202818283U CN2012203380757U CN201220338075U CN202818283U CN 202818283 U CN202818283 U CN 202818283U CN 2012203380757 U CN2012203380757 U CN 2012203380757U CN 201220338075 U CN201220338075 U CN 201220338075U CN 202818283 U CN202818283 U CN 202818283U
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Abstract
The utility model discloses a radio frequency receiving and transmitting apparatus, comprising a receiving system, an emitting system and a crystal oscillator circuit, wherein the receiving system is formed by a low noise amplification circuit, a down conversion circuit, an intermediate frequency amplification circuit and a receiving system local oscillator source, the emitting system is formed by an emitting system local oscillator source, a BPSK modulator, an upconversion circuit, a numerical control attenuation circuit and a power amplification, the crystal oscillator circuit is formed by a temperature compensation crystal oscillator and a power divider, the temperature compensation crystal oscillator generators a reference frequency signal, and the power divider transmits the reference frequency signal to the receiving system local oscillator source, the emitting system local oscillator source and a baseband for use. The radio frequency receiving and emitting apparatus has the advantages of being small in size, low in power consumption, low in cost and high in reliability, and is mainly used for a Big dipper hand-held type subscriber's machine; and the radio frequency receiving and emitting apparatus is externally connected with a single-chip microcomputer power amplifier or a low frequency power amplifier to be used for a Big dipper vehicle-mounted subscriber's machine, also can be used for an air force pilot lifesaving radio station, and is very practical.
Description
Technical field
The utility model relates to a kind of global positioning system apparatus, particularly relates to radio frequency reception and emitter in a kind of global positioning system.
Background technology
As everyone knows, the GPS global positioning system is used all over the world widely, and China is no exception.But the navigation system of use other country will be under one's control, and therefore, China is from having ground the navigation system with autonomous property right.At present, have i.e. " big-dipper satellite " successful launch of satellite of location, time service and communication function, and the various application apparatuss in its ground are that subscriber computer also is in the development process.Subscriber computer mainly is comprised of four functional modules: radio-frequency module, baseband module, power module and antenna.Radio-frequency module is the important module of subscriber computer, and it mainly realizes the transmission-receiving function of signal.The subscriber computer of development is expensive at present, volume large, performance can't reach user's requirement, so fail to apply on a large scale.If make subscriber computer be promoted application, device must accomplish that volume is little, lightweight, power consumption is few, cost is low, and will realize standardization, systematization and modularization.At present, the domestic manufacturer that there is no this respect.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of ic circuit with miniaturization, realize with " big-dipper satellite " supporting have the radio-frequency receiving-transmitting function, isolate, power output is large, low cost, radio frequency reception and emitter that power consumption is little.
For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions: a kind of radio frequency reception and emitter, it is comprised of receiving system, emission system and crystal oscillating circuit, and described receiving system is comprised of low noise amplifier circuit, lower frequency changer circuit, intermediate level circuit and receiving system local vibration source; Described emission system is comprised of emission system local vibration source, BPSK modulator, up-converter circuit, numerical control attenuation circuit and power amplifier; Described crystal oscillating circuit is comprised of temperature compensating crystal oscillator and power divider, and temperature compensating crystal oscillator produces the reference data frequency signal, and power divider is sent to receiving system local vibration source, emission system local vibration source, base band use with reference frequency signal.
Further, described low noise amplifier circuit is comprised of antiblocking filter and secondary low noise amplifier.
Further, described lower frequency changer circuit and described intermediate level circuit are comprised of radio frequency band filter, first order low-converter, first order intermediate frequency amplifier, if bandpas filter, second level intermediate frequency amplifier, second level low-converter, automatic gain control circuit and low pass filter.
Further, described receiving system local vibration source is comprised of frequency synthesizer, single-chip microcomputer, low pass filter, described frequency synthesizer receives the reference frequency that crystal oscillating circuit is sent here, be subjected to two frequencies of instruction control output of single-chip microcomputer, connect respectively first order low-converter and connect second level low-converter and automatic gain control circuit through low pass filter.
Further, described power amplifier is comprised of radio frequency band filter, first order power amplifier, second level power amplifier and isolator.
Compared with prior art, the beneficial effects of the utility model are: have the advantage that volume is little, low in energy consumption, cost is low, highly reliable, be mainly used in Big Dipper hand-hold type subscriber computer, but utilize this device, an external monolithic power amplifier or low putting equally also can provide Big Dipper vehicular subscriber computer to use, can also provide air force pilot's safeguard station to use, very practical.
Description of drawings
Fig. 1 is the functional-block diagram of the utility model embodiment.
Among the figure: 1-low noise amplifier circuit, 2-lower frequency changer circuit, 3-intermediate level circuit, 4-crystal oscillating circuit, 5-receiving system local vibration source, 6-emission system local vibration source, 7-power amplifier, 8-BPSK modulator, 9-up-converter circuit.
Embodiment
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
As shown in Figure 1, a kind of radio frequency reception and emitter, it is comprised of receiving system, emission system and crystal oscillating circuit 4.Described receiving system is comprised of low noise amplifier circuit 1, lower frequency changer circuit 2, intermediate level circuit 3 and receiving system local vibration source 5.Described emission system is comprised of emission system local vibration source 6, BPSK modulator 8, up-converter circuit 9, numerical control attenuation circuit and power amplifier 7.Described crystal oscillating circuit 4 is comprised of temperature compensating crystal oscillator and power divider, and temperature compensating crystal oscillator produces the reference data frequency signal, and power divider is sent to receiving system local vibration source 5, emission system local vibration source 6, base band use with reference frequency signal.Described low noise amplifier circuit 1 is comprised of antiblocking filter and secondary low noise amplifier.Described lower frequency changer circuit 2 and described intermediate level circuit 3 are comprised of radio frequency band filter, first order low-converter, first order intermediate frequency amplifier, if bandpas filter, second level intermediate frequency amplifier, second level low-converter, automatic gain control circuit and low pass filter.Described receiving system local vibration source 5 is comprised of frequency synthesizer, single-chip microcomputer, low pass filter, described frequency synthesizer receives the reference frequency that crystal oscillating circuit 4 is sent here, be subjected to two frequencies of instruction control output of single-chip microcomputer, connect respectively first order low-converter and connect second level low-converter and automatic gain control circuit through low pass filter.Described power amplifier 7 is comprised of radio frequency band filter, first order power amplifier, second level power amplifier and isolator.
In above-described embodiment, described antiblocking filter reception antenna signal, aerial signal is inputted low noise amplifier circuit 1 carry out the secondary amplification, low noise amplifier circuit 1 output termination radio frequency band filter, radio frequency band filter output termination first order low-converter, first order low-converter also receives the reference frequency signal of receiving system local vibration source 5 simultaneously, after the mixing, output termination first order intermediate frequency amplifier, the output termination if bandpas filter of first order intermediate frequency amplifier carries out filtering, the filtering out of band signal, then export termination second level intermediate frequency amplifier, second level intermediate frequency amplifier output termination second level low-converter and automatic gain control circuit, second level low-converter and automatic gain control circuit also receive another reference frequency signal of receiving system local vibration source 5 simultaneously, after the mixing, low-pass filter of output termination, low pass filter is exported to base band.BPSK modulator 8 and up-converter circuit 9 receives the reference frequency signal that the intermediate frequency data signal that come by baseband transmission and emission system local vibration source 6 provide, after the mixing, give numerical control attenuation circuit with signal, numerical control attenuation circuit also receives the control signal that base band is sent here, the output termination radio frequency band filter of numerical control attenuation circuit, radio frequency band filter output connects first order power amplifier, first order power amplifier output termination second level power amplifier, second level power amplifier output termination isolator, isolator output termination antenna; Emission system local vibration source 6 is comprised of frequency synthesizer, and its receives the reference frequency signal that crystal oscillator is sent here, and the local oscillation signal of BPSK modulator 8 and up-converter circuit 9 is provided.
The main performance index of above-described embodiment is: transmit signal power P 〉=10W; Efficiency eta 〉=30%; The emission Carrier Phase Noise≤-60dBc/Hz@100Hz ,≤-70dBc/Hz@1kHz ,≤-80dBc/Hz@10kHz ,≤-90dBc/Hz@100kHz; Carrier frequency drift≤5 * 10
-7Receiver noise factor NF≤1.5dB; Total isolation 〉=the 90dB of transceiver channel; Receive channel maximum gain 〉=109dB; AGC control range＞30dB; Volume≤65 * 65 * 18mm
3Weight＜150g; Power consumption＜800mW; Impact 6g/s; Vibration 0.1g/ (20-100) Hz; Humidity 100KH; Operating ambient temperature-20-+55 ℃; Storage environment temperature-55-+70 ℃.
Claims (5)
1. a radio frequency reception and emitter, it is comprised of receiving system, emission system and crystal oscillating circuit (4), it is characterized in that: described receiving system is comprised of low noise amplifier circuit (1), lower frequency changer circuit (2), intermediate level circuit (3) and receiving system local vibration source (5); Described emission system is comprised of emission system local vibration source (6), BPSK modulator (8), up-converter circuit (9), numerical control attenuation circuit and power amplifier (7); Described crystal oscillating circuit (4) is comprised of temperature compensating crystal oscillator and power divider, and temperature compensating crystal oscillator produces the reference data frequency signal, and power divider is sent to receiving system local vibration source (5), emission system local vibration source (6), base band use with reference frequency signal.
2. radio frequency reception according to claim 1 and emitter, it is characterized in that: described low noise amplifier circuit (1) is comprised of antiblocking filter and secondary low noise amplifier.
3. radio frequency reception according to claim 1 and emitter, it is characterized in that: described lower frequency changer circuit (2) and described intermediate level circuit (3) are comprised of radio frequency band filter, first order low-converter, first order intermediate frequency amplifier, if bandpas filter, second level intermediate frequency amplifier, second level low-converter, automatic gain control circuit and low pass filter.
4. according to claim 1 or 3 described radio frequency reception and emitters, it is characterized in that: described receiving system local vibration source (5) is comprised of frequency synthesizer, single-chip microcomputer, low pass filter, described frequency synthesizer receives the reference frequency that crystal oscillating circuit (4) is sent here, be subjected to two frequencies of instruction control output of single-chip microcomputer, connect respectively first order low-converter and connect second level low-converter and automatic gain control circuit through low pass filter.
5. radio frequency reception according to claim 1 and emitter, it is characterized in that: described power amplifier (7) is comprised of radio frequency band filter, first order power amplifier, second level power amplifier and isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203380757U CN202818283U (en) | 2012-07-13 | 2012-07-13 | Radio frequency receiving and emitting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203380757U CN202818283U (en) | 2012-07-13 | 2012-07-13 | Radio frequency receiving and emitting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202818283U true CN202818283U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203380757U Expired - Fee Related CN202818283U (en) | 2012-07-13 | 2012-07-13 | Radio frequency receiving and emitting apparatus |
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| CN (1) | CN202818283U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018023823A1 (en) * | 2016-08-03 | 2018-02-08 | 华讯方舟科技有限公司 | Millimeter wave imaging apparatus |
| CN111800187A (en) * | 2020-07-07 | 2020-10-20 | 成都天奥信息科技有限公司 | Satellite ground communication circuit based on AD9364 radio frequency chip |
-
2012
- 2012-07-13 CN CN2012203380757U patent/CN202818283U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018023823A1 (en) * | 2016-08-03 | 2018-02-08 | 华讯方舟科技有限公司 | Millimeter wave imaging apparatus |
| US11156710B2 (en) | 2016-08-03 | 2021-10-26 | China Communication Technology Co., Ltd. | Millimeter wave imaging apparatus |
| CN111800187A (en) * | 2020-07-07 | 2020-10-20 | 成都天奥信息科技有限公司 | Satellite ground communication circuit based on AD9364 radio frequency chip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20130713 |