CN104753557A - Wireless data transfer radio - Google Patents
Wireless data transfer radio Download PDFInfo
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- CN104753557A CN104753557A CN201510127751.4A CN201510127751A CN104753557A CN 104753557 A CN104753557 A CN 104753557A CN 201510127751 A CN201510127751 A CN 201510127751A CN 104753557 A CN104753557 A CN 104753557A
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Abstract
The invention discloses a wireless data transfer radio. The radio comprises a micro-control unit MCU, a modulator, a frequency synthesizer, a multi-band frequency power amplifier, A/D converter/demodulator, a mixer, a broadband low-noise amplifier, a first N path switch, a second N path switch, a 2N path switch, an emitting channel filter unit including N wave filters and a receiving channel filter unit including N wave filters. The wireless data transfer radio is small in volume, high in degree of integration, and simple in frequency band switching.
Description
Technical field
The present invention relates to communication equipment field, particularly relate to a kind of wireless digital broadcasting station.
Background technology
Wireless digital broadcasting station refers to the high-performance expert data transmission radio station realized by Digital Signal Processing and radiotechnics.Industrial wireless data radio station is subject to extensive use, but due to the restriction of frequency spectrum resource, traditional one-segment wireless digital broadcasting station gradually replace by multiband radio station; And existing multiband wireless digital broadcasting station, be linked together by several one-segment wireless digital broadcasting station by router and common signal channel, need which frequency range, then Signal transmissions transmits to corresponding radio station by router; The multiband wireless digital broadcasting station bulky of this structure, brings inconvenience to application.
Summary of the invention
The object of the invention is, a kind of wireless digital broadcasting station is provided, large to improve existing data radio station volume, the problem that integrated level is not high.
The invention discloses a kind of wireless digital broadcasting station, above-mentioned radio station comprises micro-control unit MCU, modulator, frequency synthesizer, multiband power amplifier, A/D conversion/demodulator, frequency mixer, wideband low noise amplifier, a N way switch, the 2nd N way switch, 2N way switch, comprises the transmission channel filter unit of N number of filter and comprise the receive path filter unit of N number of filter, wherein, N >=2, and
The output of said modulator is connected with the input of said frequencies synthesizer;
An output of said frequencies synthesizer is connected with the input of above-mentioned multiband power amplifier, and another output is connected with an input of above-mentioned frequency mixer;
The output of above-mentioned multiband power amplifier is connected with the moved end of an above-mentioned N way switch;
The not moved end of an above-mentioned N way switch is connected with the input of each filter in above-mentioned transmission channel filter unit respectively;
In above-mentioned transmission channel filter unit, the output of each filter is connected with wherein N number of not moved end of above-mentioned 2N way switch respectively;
N number of in addition not moved end of above-mentioned 2N way switch is connected with the input of each filter in above-mentioned receive path filter unit respectively; Moved end is connected with antenna;
In above-mentioned receive path filter unit, the output of each filter is connected with the not moved end of above-mentioned 2nd N way switch respectively;
The moved end of above-mentioned 2nd N way switch is connected with the input of above-mentioned wideband low noise amplifier;
The output of above-mentioned wideband low noise amplifier is connected with the input of above-mentioned frequency mixer;
The output of above-mentioned frequency mixer changes with above-mentioned A/D/and the input of demodulator is connected;
Above-mentioned MCU changes/demodulator, a N way switch, the 2nd N way switch and 2N way switch respectively and is connected with said modulator, A/D, for when emission state, control said modulator to generate baseband signal, simultaneously according to frequency range to be launched, control the conducting of an above-mentioned N way switch and above-mentioned 2N way switch; And when accepting state, according to frequency range to be received, control above-mentioned 2nd N way switch and above-mentioned 2N way switch.
Preferably, an above-mentioned N way switch, the 2nd N way switch, 2N way switch are radio-frequency (RF) switch.
Preferably, in above-mentioned transmission channel filter unit, each filter is low pass filter; In above-mentioned receive path filter unit, each filter is band pass filter.
Wireless digital broadcasting station of the present invention can be operated in and comprise multiple frequency range such as uhf band (410-470MHz), VHF frequency range (220-240MHz), and volume is little, integrated level is high, frequency range switches simple.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the theory diagram of wireless digital broadcasting station of the present invention;
Fig. 2 is the embodiment theory diagram of wireless digital broadcasting station of the present invention when can be operated in 220-240MHz and 410-470MHz frequency range.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearly, understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, it is the theory diagram of wireless digital broadcasting station of the present invention, comprise MCU 01, modulator 02, frequency synthesizer 03, multiband power amplifier 04, A/D conversion/demodulator 05, frequency mixer 06, wideband low noise amplifier 07, a N way switch 08, the 2nd N way switch 09,2N way switch 10, comprise the transmission channel filter unit 11 of N number of filter and comprise the receive path filter unit 12 of N number of filter, wherein, N >=2, and
The output of modulator 02 is connected with the input of frequency synthesizer 03;
An output of frequency synthesizer 03 is connected with the input of multiband power amplifier 04, and another output is connected with the input of frequency mixer 06;
The output of multiband power amplifier 04 is connected with the moved end of a N way switch 08;
The not moved end of the one N way switch 08 is connected with the input of each filter in transmission channel filter unit 11 respectively; Namely one not moved end connect the input of a filter; N group connects altogether;
In transmission channel filter unit 11, the output of N number of filter is connected with wherein N number of not moved end of 2N way switch 10 respectively; Namely the output of each filter is not all connected moved end with one of them of 2N way switch; N group connects altogether, and other in like manner;
N number of in addition not moved end of 2N way switch 10 is connected with the input of each filter in receive path filter unit 12 respectively; Moved end is connected with antenna;
In receive path filter unit 12, the output of each filter is connected with the not moved end of the 2nd N way switch 09 respectively;
The moved end of the 2nd N way switch 09 is connected with the input of wideband low noise amplifier 07;
The output of wideband low noise amplifier 07 is connected with the input of frequency mixer 06;
The output of frequency mixer 06 changes with A/D/and the input of demodulator 05 is connected;
MCU01 changes/demodulator 05, a N way switch 08, the 2nd N way switch 09 and 2N way switch 10 respectively and is connected with modulator 02, A/D, for when emission state, control modulator 02 to generate baseband signal, simultaneously according to frequency range to be launched, control the conducting of a N way switch 08 and 2N way switch 10; And when accepting state, according to frequency range to be received, control the conducting of the 2nd N way switch 09 and 2N way switch 10; In the present invention, each filter of transmitting path and receiving path, is responsible for carrying out filtering to the signal of a frequency range respectively.
As shown in Figure 2, be the embodiment theory diagram of wireless digital broadcasting station of the present invention when can be operated in 220-240MHz and 410-470MHz frequency range; That is, the present embodiment radio station can only be operated in 220-240MHz and 410-470MHz frequency range, as shown in the figure, comprise MCU 01, modulator 02, frequency synthesizer 03, multiband power amplifier 04, A/D conversion/demodulator 05, frequency mixer 06, wideband low noise amplifier 07, first single-pole double-throw switch (SPDT) 080, second single-pole double-throw switch (SPDT) 090, hilted broadsword four throw switch 100, first filter 110, second filter 111, the 3rd filter 120 and the 4th filter 121, first filter 110 and the second filter 111 forms transmission channel filter unit 11; 3rd filter 120 and the 4th filter 121 form receive path filter cell 12; In the present embodiment, the first filter 110, second filter 111 is low pass filter; 3rd filter 120, the 4th filter 121 are band pass filter; First single-pole double-throw switch (SPDT) 080, second single-pole double-throw switch (SPDT) 090, hilted broadsword four throw switch 100 are radio-frequency (RF) switch; Wherein,
The output of modulator 02 is connected with the input of frequency synthesizer 03;
An output of frequency synthesizer 03 is connected with the input of multiband power amplifier 04, and another output is connected with the input of frequency mixer 06;
The output of multiband power amplifier 04 is connected with the moved end of the first single-pole double-throw switch (SPDT) 080;
The not moved end of the first single-pole double-throw switch (SPDT) 080 is connected with the input of the first filter 110 and the second filter 1111 respectively;
The output of the first filter 110 and the second filter 111 respectively with hilted broadsword four throw switch 100 wherein two not moved end be connected;
Two other of hilted broadsword four throw switch 100 is not connected with the input of the 3rd filter 120 and the 4th filter 121 moved end respectively; Moved end is connected with antenna;
The output of the 3rd filter 120 and the 4th filter 121 is connected with the not moved end of the second single-pole double-throw switch (SPDT) 090 respectively;
The moved end of the second single-pole double-throw switch (SPDT) 090 is connected with the input of wideband low noise amplifier 07;
The output of wideband low noise amplifier 07 is connected with the input of frequency mixer 06;
The output of frequency mixer 06 changes with A/D/and the input of demodulator 05 is connected;
MCU 01 changes with modulator 02, A/D respectively/and demodulator 05, first single-pole double-throw switch (SPDT) 080, second single-pole double-throw switch (SPDT) 090 and hilted broadsword four throw switch 100 be connected, for when emission state, control modulator 02 to generate baseband signal, simultaneously according to frequency range to be launched, control the conducting of the first single-pole double-throw switch (SPDT) 080 hilted broadsword four throw switch 100; And when accepting state, according to frequency range to be received, control the connection status of the second single-pole double-throw switch (SPDT) 090 and hilted broadsword four throw switch 100.
When radio station is in emission state, MCU 01 controls modulator 02 and produces baseband signal, simultaneously according to current wanted transmit frequency band, controls the conducting state of the first single-pole double-throw switch (SPDT) 080 and hilted broadsword four throw switch 100, composition RF transmit channel; The baseband signal of generation is sent to frequency synthesizer 03 by modulator 02; Frequency synthesizer 03 produces the radiofrequency signal of transmit frequency band, and radiofrequency signal is delivered to multiband power amplifier 04; Multiband power amplifier 04 radio frequency signal amplifies, afterwards according to different transmit frequency bands, and the harmonic wave that the radiofrequency signal after amplification produces through different filter filtering power amplifiers, then be transferred to antenna transmission and go out.
When radio station is in accepting state, MCU 01 controls the conducting state of the second single-pole double-throw switch (SPDT) 090 and hilted broadsword four throw switch 100, composition RF receive channel; Antenna received RF signal, after the 3rd filter 120 or the 4th filter 121 filtering, wideband low noise amplifier 07 amplify, at frequency mixer 06, place carries out Frequency mixing processing, the local oscillation signal of frequency mixer 06 is produced by frequency synthesizer 03, the radiofrequency signal received becomes baseband signal after mixing, convert laggard row digital demodulation by A/D conversion/demodulator 05 again, and deliver to MCU 01, the receiving demodulation of settling signal.
Above-mentioned explanation illustrate and describes the preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection range of claims of the present invention.
Claims (3)
1. a wireless digital broadcasting station, it is characterized in that, described radio station comprises micro-control unit MCU, modulator, frequency synthesizer, multiband power amplifier, A/D conversion/demodulator, frequency mixer, wideband low noise amplifier, a N way switch, the 2nd N way switch, 2N way switch, comprises the transmission channel filter unit of N number of filter and comprise the receive path filter unit of N number of filter, wherein, N >=2, and
The output of described modulator is connected with the input of described frequency synthesizer;
An output of described frequency synthesizer is connected with the input of described multiband power amplifier, and another output is connected with an input of described frequency mixer;
The output of described multiband power amplifier is connected with the moved end of a described N way switch;
The not moved end of a described N way switch is connected with the input of each filter in described transmission channel filter unit respectively;
In described transmission channel filter unit, the output of each filter is connected with wherein N number of not moved end of described 2N way switch respectively;
N number of in addition not moved end of described 2N way switch is connected with the input of each filter in described receive path filter unit respectively; Moved end is connected with antenna;
In described receive path filter unit, the output of each filter is connected with the not moved end of described 2nd N way switch respectively;
The moved end of described 2nd N way switch is connected with the input of described wideband low noise amplifier;
The output of described wideband low noise amplifier is connected with the input of described frequency mixer;
The output of described frequency mixer changes with described A/D/and the input of demodulator is connected;
Described MCU changes/demodulator, a N way switch, the 2nd N way switch and 2N way switch respectively and is connected with described modulator, A/D, for when emission state, control described modulator to generate baseband signal, simultaneously according to frequency range to be launched, control the conducting of a described N way switch and described 2N way switch; And when accepting state, according to frequency range to be received, control the conducting of described 2nd N way switch and described 2N way switch.
2. wireless digital broadcasting station as claimed in claim 1, it is characterized in that, a described N way switch, the 2nd N way switch, 2N way switch are radio-frequency (RF) switch.
3. wireless digital broadcasting station as claimed in claim 1 or 2, it is characterized in that, in described transmission channel filter unit, each filter is low pass filter; In described receive path filter unit, each filter is band pass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510127751.4A CN104753557A (en) | 2015-03-23 | 2015-03-23 | Wireless data transfer radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510127751.4A CN104753557A (en) | 2015-03-23 | 2015-03-23 | Wireless data transfer radio |
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| CN201510127751.4A Pending CN104753557A (en) | 2015-03-23 | 2015-03-23 | Wireless data transfer radio |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429648A (en) * | 2015-11-09 | 2016-03-23 | 武汉中元通信股份有限公司 | Channel switching module based on VHF/UHF double-frequency radio station |
| CN106253865A (en) * | 2016-08-01 | 2016-12-21 | 上海华虹宏力半导体制造有限公司 | Multi-frequency band radio-frequency power amplifier |
| CN108235156A (en) * | 2017-12-29 | 2018-06-29 | 成都天奥信息科技有限公司 | A kind of wireless communication control system based on V/UHF channels |
| CN108337003A (en) * | 2018-02-08 | 2018-07-27 | 成都航天通信设备有限责任公司 | A kind of implementation method in the high broadband noise index in VHF sections of radio station |
| CN115453194A (en) * | 2022-11-04 | 2022-12-09 | 石家庄银河微波技术股份有限公司 | Front protection device and test system of frequency spectrograph |
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| JPH06132847A (en) * | 1992-10-21 | 1994-05-13 | Fuji Electric Co Ltd | Trasmitting/receiving frequency band switching radio communication equipment |
| US20060046787A1 (en) * | 2004-08-31 | 2006-03-02 | Research In Motion Limited | Mobile wireless communications device with reduced interfering energy from the display and related methods |
| CN101094480A (en) * | 2007-07-26 | 2007-12-26 | 中兴通讯股份有限公司 | Circuit structure for improving influence on CDMA sensitivity from GSM switch in dual modes handset |
| CN101442330A (en) * | 2008-12-09 | 2009-05-27 | 中兴通讯股份有限公司 | Radio frequency circuit and CDMA mobile terminal |
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2015
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Patent Citations (4)
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| JPH06132847A (en) * | 1992-10-21 | 1994-05-13 | Fuji Electric Co Ltd | Trasmitting/receiving frequency band switching radio communication equipment |
| US20060046787A1 (en) * | 2004-08-31 | 2006-03-02 | Research In Motion Limited | Mobile wireless communications device with reduced interfering energy from the display and related methods |
| CN101094480A (en) * | 2007-07-26 | 2007-12-26 | 中兴通讯股份有限公司 | Circuit structure for improving influence on CDMA sensitivity from GSM switch in dual modes handset |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429648A (en) * | 2015-11-09 | 2016-03-23 | 武汉中元通信股份有限公司 | Channel switching module based on VHF/UHF double-frequency radio station |
| CN105429648B (en) * | 2015-11-09 | 2019-01-22 | 武汉中元通信股份有限公司 | Channel based on VHF/UHF dual-band radio radio station switches module |
| CN106253865A (en) * | 2016-08-01 | 2016-12-21 | 上海华虹宏力半导体制造有限公司 | Multi-frequency band radio-frequency power amplifier |
| CN106253865B (en) * | 2016-08-01 | 2019-06-11 | 上海华虹宏力半导体制造有限公司 | Multi-frequency band radio-frequency power amplifier |
| CN108235156A (en) * | 2017-12-29 | 2018-06-29 | 成都天奥信息科技有限公司 | A kind of wireless communication control system based on V/UHF channels |
| CN108337003A (en) * | 2018-02-08 | 2018-07-27 | 成都航天通信设备有限责任公司 | A kind of implementation method in the high broadband noise index in VHF sections of radio station |
| CN115453194A (en) * | 2022-11-04 | 2022-12-09 | 石家庄银河微波技术股份有限公司 | Front protection device and test system of frequency spectrograph |
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Application publication date: 20150701 |