CN105141324A - Multi-channel receiving device - Google Patents
Multi-channel receiving device Download PDFInfo
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- CN105141324A CN105141324A CN201510338103.3A CN201510338103A CN105141324A CN 105141324 A CN105141324 A CN 105141324A CN 201510338103 A CN201510338103 A CN 201510338103A CN 105141324 A CN105141324 A CN 105141324A
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- signal
- switch
- frequency
- receiving device
- preliminary election
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- Circuits Of Receivers In General (AREA)
- Superheterodyne Receivers (AREA)
Abstract
The invention relates to the technical field of microwave communication, and provides a solution to the technical problem that there are interference signals in signals received by a communication device in the prior art. A microwave signal transmitting and receiving device is provided, comprising an external filter, a coaxial change-over switch, a power amplifier connected to one end of the coaxial change-over switch, and a low-noise amplifier connected to the other end of the coaxial change-over switch. The coaxial change-over switch comprises a transmitting end, a receiving end, and an antenna. The external filter is connected with the coaxial change-over switch. The microwave signal transmitting and receiving device further comprises a double-channel transmitting and receiving switch. When the antenna is coupled to the transmitting end, the coaxial change-over switch is communicated with the power amplifier, and power-amplified microwave signals are output through an uplink channel of the double-channel transmitting and receiving switch. When the antenna is coupled to the receiving end, the coaxial change-over switch is communicated with the low-noise amplifier, and de-noised and amplified microwave signals are output to a subsequent circuit through a downlink channel of the double-channel transmitting and receiving switch. Thus, the technical effect of anti-interference performance improvement is achieved.
Description
Technical field
The present invention relates to technical field of micro communication, particularly relate to a kind of multichannel receiving device.
Background technology
Microwave front-end receiver is the critical component of the field such as satellite communication, radar communication high sensitive transceiving device, be mainly used in the radiofrequency signal that receiver receiver/transmitter sends, demodulation, decoding etc. is carried out by delivering to rear class after this radiofrequency signal process, restore baseband signal and give user, at some application scenarios, need the radiofrequency signal received to be divided into identical or different output, meanwhile, the sensitivity received can not be ensured for Received signal strength.
Summary of the invention
The present invention, by providing a kind of multichannel receiving device, solves the technical problem that can not ensure sensitivity in prior art to received signal, and then achieves the technique effect that can ensure receiving sensitivity.
The technical scheme of the embodiment of the present invention is specially:
A kind of multichannel receiving device, comprise: amplitude limiter, switch, preliminary election filter amplifier and frequency mixer, through the signal input switch of amplitude limiter, the signal that multichannel receives is divided into the signal of multiple separate frequency bands by switch, preliminary election filter amplifier carries out filtering to the signal of each frequency range and amplifies process, signal after frequency mixer receives process also mixes with the local oscillation signal that the external world inputs, also comprise, to the self-test signal generator that the signal of preliminary election filter amplifier detects, wherein, the output of self-test signal generator connects described preliminary election filter amplifier, input linking number word processor, digital processing unit also connects vision signal detector, the signal that frequency mixer exports enters intermediate frequency filtering amplifier, to amplifying after the intermediate frequency filtering of signal and exporting in intermediate-frequency filter.
Further, between switch with amplitude limiter, radio frequency programmable attenuator is also connected.
Further, also comprise oscillator and power splitter, power splitter connection oscillator, receive local oscillation signal and export multiple local oscillation signal, and the output of power splitter connects frequency mixer.
The one or more technical schemes provided in the embodiment of the present invention, at least have following technique effect or advantage:
Owing to adopting the amplitude limiter connected successively in multichannel receiving device, switch, preliminary election filter amplifier and frequency mixer, wherein, also comprise the self-test signal generator being connected to preliminary election filter amplifier, the output of this self-test signal generator connects this preliminary election filter amplifier, input linking number word processor, digital processing unit also connects vision signal detector, by self-test signal generator, the signal in preliminary election filter amplifier is detected automatically, and transfer to vision signal detector by digital processing unit, this vision signal detector can intuitively be seen the difference of waveform, solve the technical problem that can not ensure sensitivity in prior art to received signal, and then achieve the technique effect that can ensure sensitivity.
Accompanying drawing explanation
Fig. 1 is the module diagram of multichannel receiving device in the embodiment of the present invention.
Embodiment
The present invention, by providing a kind of multichannel receiving device, solves the technical problem that can not ensure sensitivity in prior art to received signal, and then achieves the technique effect that can ensure receiving sensitivity.。
In order to solve the technical problem that can not ensure sensitivity in above-mentioned prior art to received signal, below in conjunction with Figure of description and concrete execution mode, technique scheme is described in detail.
The embodiment of the present invention provides a kind of multichannel receiving device, as shown in Figure 1, comprise: amplitude limiter 101, switch 102, preliminary election filter amplifier 103 and frequency mixer 104, first, after the signal of amplitude limiter 101 passes through protection, input value switch 102, the signal that multiplexer channel receives is divided into the signal of multiple separate frequency bands by this switch 102, the signal of each frequency range of preliminary election filter amplifier more than 103 carries out filtering and amplifies process, signal after frequency mixer 104 accepts process also carries out mixing with the local oscillation signal that the external world inputs, this multichannel receiving device also comprises oscillator 105 and power splitter 106, power splitter 106 connection oscillator 105, the local oscillation signal of power splitter 106 reception oscillator 105 also exports multiple local oscillation signal, and the output of power splitter 106 connects frequency mixer 104, like this, frequency mixer 104 can obtain the local oscillation signal for mixing.
The self-test signal generator 107 that the signal of preliminary election filter amplifier 103 is detected also is comprised in this microwave transceiver, the output of this self-test signal generator 107 connects preliminary election filter amplifier 103, the input linking number word processor 108 of this self-test signal generator, this digital processing unit 108 also connects vision signal detector 109, like this, the signal entering preliminary election filter amplifier 103 can be detected, and see wave form varies by vision signal detector, improving can the sensitivity of Received signal strength.
After exporting mixed frequency signal by frequency mixer 104, mixed frequency signal is inputted intermediate frequency filtering amplifier 110, in this intermediate frequency filtering amplifier 110 to the intermediate frequency filtering of signal after, amplify and export.
Between switch 102 with amplitude limiter 101, be also connected radio frequency programmable attenuator 111, can decay to strong signal, thus protect follow-up components and parts.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (3)
1. a multichannel receiving device, it is characterized in that, comprise: amplitude limiter, switch, preliminary election filter amplifier and frequency mixer, through the signal input switch of amplitude limiter, the signal that multichannel receives is divided into the signal of multiple separate frequency bands by switch, preliminary election filter amplifier carries out filtering to the signal of each frequency range and amplifies process, signal after frequency mixer receives process also mixes with the local oscillation signal that the external world inputs, also comprise, to the self-test signal generator that the signal of preliminary election filter amplifier detects, wherein, the output of self-test signal generator connects described preliminary election filter amplifier, input linking number word processor, digital processing unit also connects vision signal detector, the signal that frequency mixer exports enters intermediate frequency filtering amplifier, to amplifying after the intermediate frequency filtering of signal and exporting in intermediate-frequency filter.
2. multichannel receiving device according to claim 1, is characterized in that, between switch with amplitude limiter, be also connected radio frequency programmable attenuator.
3. multichannel receiving device according to claim 1, is characterized in that, also comprises oscillator and power splitter, power splitter connection oscillator, receives local oscillation signal and exports multiple local oscillation signal, and the output of power splitter connects frequency mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338103.3A CN105141324A (en) | 2015-06-18 | 2015-06-18 | Multi-channel receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338103.3A CN105141324A (en) | 2015-06-18 | 2015-06-18 | Multi-channel receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105141324A true CN105141324A (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510338103.3A Pending CN105141324A (en) | 2015-06-18 | 2015-06-18 | Multi-channel receiving device |
Country Status (1)
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| CN (1) | CN105141324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115208422A (en) * | 2022-09-14 | 2022-10-18 | 成都益为创科技有限公司 | Radio frequency transceiving system adopting double-tone signal frequency mixing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050075077A1 (en) * | 2003-10-03 | 2005-04-07 | Motorola, Inc. | Multimode receiver and method for controlling signal interference |
| CN101105526A (en) * | 2007-07-11 | 2008-01-16 | 哈尔滨工程大学 | Real-time tracking local oscillator device based on signal |
| CN201054734Y (en) * | 2007-06-28 | 2008-04-30 | 重庆会凌电子新技术有限公司 | A broad frequency monitoring receiver |
| CN102571118A (en) * | 2010-12-14 | 2012-07-11 | 成都九洲迪飞科技有限责任公司 | Single-channel receiver with self-detection function |
| CN103713295A (en) * | 2013-12-27 | 2014-04-09 | 北京苍穹数码测绘有限公司 | Single-board three-antenna high-precision positioning and orientation receiver |
-
2015
- 2015-06-18 CN CN201510338103.3A patent/CN105141324A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050075077A1 (en) * | 2003-10-03 | 2005-04-07 | Motorola, Inc. | Multimode receiver and method for controlling signal interference |
| CN201054734Y (en) * | 2007-06-28 | 2008-04-30 | 重庆会凌电子新技术有限公司 | A broad frequency monitoring receiver |
| CN101105526A (en) * | 2007-07-11 | 2008-01-16 | 哈尔滨工程大学 | Real-time tracking local oscillator device based on signal |
| CN102571118A (en) * | 2010-12-14 | 2012-07-11 | 成都九洲迪飞科技有限责任公司 | Single-channel receiver with self-detection function |
| CN103713295A (en) * | 2013-12-27 | 2014-04-09 | 北京苍穹数码测绘有限公司 | Single-board three-antenna high-precision positioning and orientation receiver |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115208422A (en) * | 2022-09-14 | 2022-10-18 | 成都益为创科技有限公司 | Radio frequency transceiving system adopting double-tone signal frequency mixing |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151209 |
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| RJ01 | Rejection of invention patent application after publication |