CN102299684B - Signal frequency conversion transmitter - Google Patents
Signal frequency conversion transmitter Download PDFInfo
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- CN102299684B CN102299684B CN 201110133918 CN201110133918A CN102299684B CN 102299684 B CN102299684 B CN 102299684B CN 201110133918 CN201110133918 CN 201110133918 CN 201110133918 A CN201110133918 A CN 201110133918A CN 102299684 B CN102299684 B CN 102299684B
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Abstract
The invention belongs to an electronic circuit and particularly relates to a frequency conversion circuit used in a Ku frequency range satellite communication system. A signal frequency conversion transmitter comprises a first filter (BPF1), a second filter (BPF2), a third filter (BPF3), a fourth filter (BPF4), a fifth filter (BPF5), a sixth filter (BPF6), a first amplifier (A1), a second amplifier (A2), a third amplifier (A3), a fourth amplifier (A6), a first variable gain amplifier (A4), a second variable gain amplifier (A5), a first mixer (MIXER1), a second mixer (MIXER2), a third mixer (MIXER3), a low-pass filter (LPF1), a first local oscillator frequency source (LO1), a second local oscillator frequency source (LO2), a third local oscillator frequency source (LO3) and an attenuator (ATT1). The signal frequency conversion transmitter converts the frequency of a sending set signal of a wireless image transmission system, and then, transmits the signal to a satellite via an original up-converter, thereby solving the problem that a distant station cannot remotely acquire information in the existing satellite mobile communication.
Description
Technical field
The invention belongs to a kind of electronic circuit, particularly a kind of frequency changer circuit that is used in Ku frequency range satellite communication system.
Background technology
At present, in the known Ku frequency range satellite communication system, the main effect of upconverter is that the intermediate-freuqncy signal frequency conversion with 950～1450MHz is the Ku wave band carrier signal of 14.0～14.5GHz, exports paramount power amplifier again and sends to satellite.In actual use, the intermediate-freuqncy signal of this 950～1450MHz can only be imported upconverter by specific model and in the wired connection mode.Therefore, can only be limited in satellite communication equipment and carry out video, voice collecting on every side, and be difficult to touch the scene of farther distance.
Summary of the invention
The objective of the invention is: a kind of signal frequency conversion transmitter is provided, it can receive the wireless image transmission system transmitter with the continuous image transmitted of 345 ± 10MHz frequency, voice wireless signal, and send upconverter to, thereby solve the problem of existing satellite mobile communication system information gathering apart from deficiency.
Technical scheme of the present invention is: a kind of signal frequency conversion transmitter, and it comprises: first filter, second filter, the 3rd filter, the 4th filter, the 5th filter, the 6th filter, first amplifier, second amplifier, the 3rd amplifier, the 4th amplifier, first variable gain amplifier, second variable gain amplifier, first frequency mixer, second frequency mixer, three-mixer, low pass filter, the first local frequency source), the second local frequency source, the 3rd local frequency source, attenuator;
Described first filter bandwidht is 20MHz, its input power-110dBm～-signal of 31dBm, frequency 345MHz, power output-111～-signal of 31dBm, frequency 345MHz;
Described first amplifier amplifies the output of described first filter, power output-96～-signal of 16dBm, frequency 345MHz;
Described second filter bandwidht is 20MHz, and it carries out filtering to the output of described first amplifier, power output-96～-signal of 16dBm, frequency 345MHz;
Described second amplifier amplifies the output of described second filter, power output-76～+ signal of 4dBm, frequency 345MHz;
The signal of described first local frequency source power output+10dBm, frequency 405～425MHz;
Described first frequency mixer carries out mixing to the output in described second amplifier and the described first local frequency source, power output-86～-signal of 6dBm, frequency 70MHz;
Described low pass filter cutoff frequency is 75MHz, and it carries out filtering to the output of described first frequency mixer, power output-87～-signal of 7dBm, frequency 70MHz;
Described the 3rd filter bandwidht is 1.6MHz, and it carries out filtering to the output of described low pass filter, power output-96～-signal of 16dBm, frequency 70MHz;
Described the 3rd amplifier amplifies the output of described the 3rd filter, power output-75～+ signal of 5dBm, frequency 70MHz;
Described first variable gain amplifier amplifies the output of described the 3rd amplifier, the signal of power output-32～0dBm, frequency 70MHz;
Described the 4th filter bandwidht is 1.6MHz, and it amplifies the output of described first variable gain amplifier, power output-42～-signal of 10dBm, frequency 70MHz;
Described second variable gain amplifier amplifies the output of described the 4th filter, the signal of power output 0dBm, frequency 70MHz;
Described attenuator is decayed to the output of described second variable gain amplifier, the signal of power output-6dBm, frequency 70MHz;
Described second local frequency source power output+10dBm, frequency are the signal of 706MHz;
Described second frequency mixer carries out mixing to the output in described attenuator and the described second local frequency source, the signal of power output-14dBm, frequency 776MHz;
Described the 5th filter bandwidht is 5MHz, and it carries out filtering to the output of described second frequency mixer, the signal of power output-19dBm, frequency 776MHz;
The signal of described the 3rd local frequency source power output+10dBm, frequency 1726～2226MHz;
Described three-mixer carries out mixing to the output in described the 5th filter and described the 3rd local frequency source, the signal of power output-27dBm, frequency 950～1450MHz;
Described the 6th filter bandwidht is 500MHz, and it carries out filtering to the output of described three-mixer, the signal of power output-30dBm, frequency 950～1450MHz;
Described the 4th amplifier amplifies the output of described the 6th filter, and the signal of power output-10dBm, frequency 950～1450MHz is to upconverter.
When wireless image transmission system transmitter during with the continuous images of 345 ± 10MHz frequency, voice, the present invention receives 345 ± 10MHz frequency signal, after being converted to 950～1450MHz, by known former upconverter, export paramount power amplifier, send to satellite, thereby solved the problem that remote terminal in the existing satellite mobile communication can not remote capture transmission information.
Description of drawings
Accompanying drawing is a structured flowchart of the present invention.
Embodiment
Referring to accompanying drawing, a kind of signal frequency conversion transmitter, it comprises: the first filter BPF1, the second filter BPF2, the 3rd filter BPF3, the 4th filter BPF4, the 5th filter BPF5, the 6th filter BPF6, the first amplifier A1, the second amplifier A2, the 3rd amplifier A3, the 4th amplifier A6, the first variable gain amplifier A4, the second variable gain amplifier A5, the first frequency mixer MIXER1, the second frequency mixer MIXER2, three-mixer MIXER3, low pass filter LPF1, the first local frequency source LO1, the second local frequency source LO2, the 3rd local frequency source LO3, attenuator ATT1;
The described first filter BPF1 bandwidth is 20MHz, its input power-110dBm～-signal of 31dBm, frequency 345MHz, power output-111～-signal of 31dBm, frequency 345MHz;
The described first amplifier A1 amplifies the output of the described first filter BPF1, power output-96～-signal of 16dBm, frequency 345MHz;
The described second filter BPF2 bandwidth is 20MHz, and it carries out filtering to the output of the described first amplifier A1, power output-96～-signal of 16dBm, frequency 345MHz;
The described second amplifier A2 amplifies the output of the described second filter BPF2, power output-76～+ signal of 4dBm, frequency 345MHz;
The signal of described first local frequency source LO1 power output+10dBm, frequency 405～425MHz;
The described first frequency mixer MIXER1 carries out mixing to the output of described second amplifier A2 and the described first local frequency source LO1, power output-86～-signal of 6dBm, frequency 70MHz;
Described low pass filter LPF1 cut-off frequency is 75MHz, and it carries out filtering to the output of the described first frequency mixer MIXER1, power output-87～-signal of 7dBm, frequency 70MHz;
Described the 3rd filter BPF3 bandwidth is 1.6MHz, and it carries out filtering to the output of described low pass filter LPF1, power output-96～-signal of 16dBm, frequency 70MHz;
Described the 3rd amplifier A3 amplifies the output of described the 3rd filter BPF3, power output-75～+ signal of 5dBm, frequency 70MHz;
The described first variable gain amplifier A4 amplifies the signal of power output-32～0dBm, frequency 70MHz to the output of described the 3rd amplifier A3;
Described the 4th filter BPF4 bandwidth is 1.6MHz, and it amplifies the output of the described first variable gain amplifier A4, power output-42～-signal of 10dBm, frequency 70MHz;
The described second variable gain amplifier A5 amplifies the signal of power output 0dBm, frequency 70MHz to the output of described the 4th filter BPF4;
Described attenuator ATT1 decays to the output of the described second variable gain amplifier A5, the signal of power output-6dBm, frequency 70MHz;
Described second local frequency source LO2 power output+10dBm, frequency are the signal of 706MHz;
The described second frequency mixer MIXER2 carries out mixing, the signal of power output-14dBm, frequency 776MHz to the output of described attenuator ATT1 and the described second local frequency source LO2;
Described the 5th filter BPF5 bandwidth is 5MHz, and it carries out filtering to the output of the described second frequency mixer MIXER2, the signal of power output-19dBm, frequency 776MHz;
The signal of described the 3rd local frequency source LO3 power output+10dBm, frequency 1726～2226MHz;
Described three-mixer MIXER3 carries out mixing to the output of described the 5th filter BPF5 and described the 3rd local frequency source LO3, the signal of power output-27dBm, frequency 950～1450MHz;
Described the 6th filter BPF6 bandwidth is 500MHz, and it carries out filtering to the output of described three-mixer MIXER3, the signal of power output-30dBm, frequency 950～1450MHz;
Described the 4th amplifier A6 amplifies the output of described the 6th filter BPF6, and the signal of power output-10dBm, frequency 950～1450MHz is to upconverter.
Claims (1)
1. signal frequency conversion transmitter, it is characterized in that: it comprises: first filter (BPF1), second filter (BPF2), the 3rd filter (BPF3), the 4th filter (BPF4), the 5th filter (BPF5), the 6th filter (BPF6), first amplifier (A1), second amplifier (A2), the 3rd amplifier (A3), the 4th amplifier (A6), first variable gain amplifier (A4), second variable gain amplifier (A5), first frequency mixer (MIXER1), second frequency mixer (MIXER2), three-mixer (MIXER3), low pass filter (LPF1), the first local frequency source (LO1), the second local frequency source (LO2), the 3rd local frequency source (LO3), attenuator (ATT1);
Described first filter (BPF1) bandwidth is 20MHz, its input power-110dBm～-signal of 31dBm, frequency 345MHz, power output-111～-signal of 31dBm, frequency 345MHz;
Described first amplifier (A1) amplifies the output of described first filter (BPF1), power output-96～-signal of 16dBm, frequency 345MHz;
Described second filter (BPF2) bandwidth is 20MHz, and it carries out filtering to the output of described first amplifier (A1), power output-96～-signal of 16dBm, frequency 345MHz;
Described second amplifier (A2) amplifies the output of described second filter (BPF2), power output-76～+ signal of 4dBm, frequency 345MHz;
The signal of described first local frequency source (LO1) power output+10dBm, frequency 405～425MHz;
Described first frequency mixer (MIXER1) carries out mixing to the output in described second amplifier (A2) and the described first local frequency source (LO1), power output-86～-signal of 6dBm, frequency 70MHz;
Described low pass filter (LPF1) cut-off frequency is 75MHz, and it carries out filtering to the output of described first frequency mixer (MIXER1), power output-87～-signal of 7dBm, frequency 70MHz;
Described the 3rd filter (BPF3) bandwidth is 1.6MHz, and it carries out filtering to the output of described low pass filter (LPF1), power output-96～-signal of 16dBm, frequency 70MHz;
Described the 3rd amplifier (A3) amplifies the output of described the 3rd filter (BPF3), power output-75～+ signal of 5dBm, frequency 70MHz;
Described first variable gain amplifier (A4) amplifies the output of described the 3rd amplifier (A3), the signal of power output-32～0dBm, frequency 70MHz;
Described the 4th filter (BPF4) bandwidth is 1.6MHz, and it amplifies the output of described first variable gain amplifier (A4), power output-42～-signal of 10dBm, frequency 70MHz;
Described second variable gain amplifier (A5) amplifies the output of described the 4th filter (BPF4), the signal of power output 0dBm, frequency 70MHz;
Described attenuator (ATT1) is decayed to the output of described second variable gain amplifier (A5), the signal of power output-6dBm, frequency 70MHz;
Described second local frequency source (LO2) power output+10dBm, frequency are the signal of 706MHz;
Described second frequency mixer (MIXER2) carries out mixing, the signal of power output-14dBm, frequency 776MHz to the output in described attenuator (ATT1) and the described second local frequency source (LO2);
Described the 5th filter (BPF5) bandwidth is 5MHz, and it carries out filtering to the output of described second frequency mixer (MIXER2), the signal of power output-19dBm, frequency 776MHz;
The signal of described the 3rd local frequency source (LO3) power output+10dBm, frequency 1726～2226MHz;
Described three-mixer (MIXER3) carries out mixing to the output in described the 5th filter (BPF5) and described the 3rd local frequency source (LO3), the signal of power output-27dBm, frequency 950～1450MHz;
Described the 6th filter (BPF6) bandwidth is 500MHz, and it carries out filtering to the output of described three-mixer (MIXER3), the signal of power output-30dBm, frequency 950～1450MHz;
Described the 4th amplifier (A6) amplifies the output of described the 6th filter (BPF6), and the signal of power output-10dBm, frequency 950～1450MHz is to upconverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110133918 CN102299684B (en) | 2011-05-24 | 2011-05-24 | Signal frequency conversion transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110133918 CN102299684B (en) | 2011-05-24 | 2011-05-24 | Signal frequency conversion transmitter |
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| CN102299684A CN102299684A (en) | 2011-12-28 |
| CN102299684B true CN102299684B (en) | 2013-07-24 |
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| CN 201110133918 Active CN102299684B (en) | 2011-05-24 | 2011-05-24 | Signal frequency conversion transmitter |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879643A (en) * | 2012-11-01 | 2013-01-16 | 南京国睿安泰信科技股份有限公司 | Novel spectrum analyzer and method |
| WO2014075215A1 (en) * | 2012-11-13 | 2014-05-22 | 海能达通信股份有限公司 | Active power filter, duplexer and wireless communication device |
| CN103023458A (en) * | 2012-11-13 | 2013-04-03 | 海能达通信股份有限公司 | Active power filter, duplexer and wireless communication equipment |
| CN104682969B (en) * | 2013-11-27 | 2017-01-18 | 贵州航天天马机电科技有限公司 | Ultrashort-wave frequency hopping transmitter |
| CN105356928B (en) * | 2015-09-28 | 2019-01-22 | 四川九洲电器集团有限责任公司 | A kind of Ku band satellite communication frequency conversion terminal device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101401317A (en) * | 2006-01-17 | 2009-04-01 | 日立金属株式会社 | High frequency circuit component and communication apparatus using such high frequency circuit component |
| CN101465656A (en) * | 2008-09-05 | 2009-06-24 | 华为技术有限公司 | Device, method and system for frequency conversion |
| CN101599779A (en) * | 2008-06-02 | 2009-12-09 | 鸿富锦精密工业（深圳）有限公司 | The intermediate-freuqncy signal loss compensating circuit |
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- 2011-05-24 CN CN 201110133918 patent/CN102299684B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101401317A (en) * | 2006-01-17 | 2009-04-01 | 日立金属株式会社 | High frequency circuit component and communication apparatus using such high frequency circuit component |
| CN101599779A (en) * | 2008-06-02 | 2009-12-09 | 鸿富锦精密工业（深圳）有限公司 | The intermediate-freuqncy signal loss compensating circuit |
| CN101465656A (en) * | 2008-09-05 | 2009-06-24 | 华为技术有限公司 | Device, method and system for frequency conversion |
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Owner name: LI GUANJUN Free format text: FORMER OWNER: BEIJING SUPERLINK SCIENCE AND TECHNOLOGY DEVELOPMENT CORPORATION Effective date: 20150619 |
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Effective date of registration: 20150619 Address after: 100053 No. 2, building 202, No. 1208, Guanganmen, Beijing, Xicheng District Patentee after: Li Guanjun Address before: 100097, Beijing, Changhua Haidian District road 18, Jade North business building, building 3, 6, 5 Patentee before: Beijing Superlink Science and Technology Development Corporation |