CN108736904A - A kind of novel VSAT receivers and transmitter - Google Patents
A kind of novel VSAT receivers and transmitter Download PDFInfo
- Publication number
- CN108736904A CN108736904A CN201710250467.5A CN201710250467A CN108736904A CN 108736904 A CN108736904 A CN 108736904A CN 201710250467 A CN201710250467 A CN 201710250467A CN 108736904 A CN108736904 A CN 108736904A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
The invention discloses a kind of novel VSAT receivers and transmitters, including transmitter circuit module, high frequency tuner circuit module, transmitter circuit and high frequency tuner circuit；Transmitter circuit module includes power control circuit, the preposition pretreatment unit of intermediate frequency, lawnmower pretreatment unit, transmitter unit and antenna, power control circuit is the preposition pretreatment unit of intermediate frequency, lawnmower pretreatment unit, transmitter unit power supply, transmitter unit emits signal by antenna, utilize increase tuner radio frequency end filter quantity, clutter recognition is carried out in conjunction with the multiple filter of transmitter circuit, the interference from transmitter is significantly reduced, while having good mirror image to inhibit again；Transmitter simplifies circuit structure, greatly reduces cost, while also the user experience is improved using 5 frequency multiplication up-conversions, the framework of multistage FET driving power amplifiers.
Description
Technical field
The present invention relates to satellite reception, satellite television, satellite online, satellite communication is belonged to, communication equipment field specifically relates to
And a kind of novel VSAT receivers and transmitter.
Background technology
In outlying, scattered place and the industry of some specific demands, as news, meteorology, civil aviaton, people's air defense, bank,
The departments such as oil, earthquake and military affairs and outlying district, in these places, the communications cable necessary to traditional communication modes,
The infrastructure such as base station or it cannot be satisfied actual use demand or can not be runed because with high costs.In these regional works
With the personnel of life, there is an urgent need to a kind of technologies to be communicated to keep the unicom with the external world.
Invention content
Technical problem to be solved by the invention is to provide a kind of transmitter circuit ends to be inhibited using multistage microstrip filter
With outer crosstalk, while using the conversion of 5 frequency multipliers realization if-to-rf, enormously simplifying circuit structure；High frequency tuner circuit is penetrated
Frequency end increases the interference that two-stage microstrip filter inhibits transmitter than traditional scheme, prevents from, because launcher signal intensity is too big, making
It is saturated work at high frequency tuner circuit, to solve the deficiency in above-mentioned background technology.
The present invention is achieved through the following technical solutions：A kind of novel VSAT receivers and transmitter, feature exist
In：Including transmitter circuit module, high frequency tuner circuit module, transmitter circuit and high frequency tuner circuit；
Wherein, transmitter circuit module includes power control circuit, the preposition pretreatment unit of intermediate frequency, lawnmower pretreatment
Unit, transmitter unit and antenna, power control circuit are the preposition pretreatment unit of intermediate frequency, lawnmower pretreatment unit, transmitting
Unit is powered, and transmitter unit emits signal by antenna；
High frequency tuner circuit module includes antenna, radio frequency reception and amplifying unit, mixing unit and intermediate frequency amplifying unit；It penetrates
Frequency is received receives radiofrequency signal with amplifying unit by antenna, and is received signal transmission to mixing unit, mixing unit warp
Intermediate frequency amplifying unit exports；
Transmitter circuit include DC conversion unit, voltage comparator, first voltage adjuster, second voltage adjuster,
Voltage detector, switch, if bandpas filter, intermediate frequency amplifier, intermediate frequency amplifier, 5 frequency multipliers, radio frequency band filter,
Radio frequency amplifier, radio frequency amplifier, radio-frequency filter, power amplifier, radio frequency low-pass filter, transmitting antenna, intermediate frequency band logical
Filter, intermediate frequency amplifier, 5 frequency multipliers, radio frequency band filter, radio frequency amplifier, radio frequency amplifier, is penetrated intermediate frequency amplifier
Frequency filter, power amplifier, radio frequency low-pass filter, transmitting antenna are sequentially connected transmission, and it is single that input terminal accesses direct current conversion
Member, voltage detector are controlled by switching, and DC conversion unit output end connects voltage detector, first voltage adjuster, the
Two voltage regulators are accessed in DC conversion unit output end；
High frequency tuner circuit includes antenna, first R.F. amplifier, first order radio-frequency filter, the amplification of second level radio frequency
Device, second level radio-frequency filter, third level radio frequency amplifier, third level radio-frequency filter, frequency mixer, intermediate frequency amplifier,
9.75GHz local oscillators and 10.6GHz local oscillators, antenna, first R.F. amplifier, first order radio-frequency filter, second level radio frequency
Amplifier, second level radio-frequency filter, third level radio frequency amplifier, third level radio-frequency filter, frequency mixer, intermediate frequency amplifier,
9.75GHz local oscillators and its input terminal of 10.6GHz local oscillators to output end are sequentially connected.
As a preferred technical solution, transmitter intermediate frequency be 2750~2900MHz, tranmitting frequency be 13750~
14500MHz；Tuner receives frequency be KU 10700~12750MHz of wave band, intermediate frequency be 950~1950MHz and 1100~
Two frequency ranges of 2150MHz.
Transmitter and high frequency tuner circuit are single-polarized antenna as a preferred technical solution, and mutually orthogonal；
High frequency tuner circuit can pass through integrated switching switch control local oscillator and switch over action as a preferred technical solution,
Realize the selection of two Mid Frequencies of 950~1950MHz and 1100~2150MHz.
Microstrip filter filtering clutter is all placed between the big devices of radiation frequency at different levels and inhibit to come as a preferred technical solution,
The interference of spontaneous emitter prevents the full conjunction work of second and third grade of amplifier of high frequency tuner circuit；It is to prevent transmitter circuit to height simultaneously
The interference of frequency head circuit placed two-stage radio-frequency microstrip filter in transmitter circuit radio frequency part and be inhibited.
Transmitter circuit uses Microstrip Low-Pass as a preferred technical solution,.
Transmitter circuit realizes the up-conversion of if-to-rf using 5 frequency multipliers as a preferred technical solution,.
There is in the DC control circuit in transmitter circuit voltage detection circuit as a preferred technical solution, be used for
It avoids burning out circuit board because of circuit abnormality.
The beneficial effects of the invention are as follows：The present invention is using tuner radio frequency end filter quantity is increased, in conjunction with transmitter electricity
The multiple filter on road carries out clutter recognition, significantly reduces the interference from transmitter, while having good mirror image to inhibit again；
Transmitter simplifies circuit structure, greatly reduces into using 5 frequency multiplication up-conversions, the framework of multistage FET driving power amplifiers
This, while also the user experience is improved.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1：VSAT transmitter circuits module diagram of the present invention；
Fig. 2：VSAT transmitters of the present invention realize circuit diagram；
Fig. 3：VSAT high frequency tuner circuits module diagram of the present invention；
Fig. 4：VSAT tuners of the present invention realize circuit diagram.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
As shown in Figure 1, being divided into power supply and signal is respectively processed.Power unit：It is handled by power control circuit 11
After be converted into required supply voltage and control signal be supplied to each signal processing unit；Signal section：Input signal passes through intermediate frequency
Preposition pretreatment unit 12 is filtered, amplifies, being converted to radiofrequency signal after up-conversion, and it is single then to pass through lawnmower pretreatment
13 amplification filtering of member, then transmission power is reinforced by transmitter unit 14, signal is launched finally by antenna 15.
VSAT transmitters of the present invention realize circuit as shown in Fig. 2, power supply and signal are detached in input terminal.Power unit is simultaneously
Power supply changeover device 201 and voltage comparator 202 are accessed, when input terminal voltage is not less than design value, voltage comparator 202 exports
One high level is to the Enable Pin of power supply changeover device 201, and driving power converter 201 starts, conversely, then power supply changeover device 201
Close, such power supply part caused by plugging product instantaneous short circuit due to burn；The output voltage of power supply changeover device 201
It is given to first voltage adjuster 203 and second voltage adjuster 204, is respectively used to generate positive pressure and negative pressure, to except power amplification
All driving components outside device provide operating voltage；The voltage that power supply changeover device 201 exports simultaneously is also given to voltage detector 205
With switch 206, the protection circuit of voltage detector 205 and 206 groups of power amplifiers 215 of switch：When circuit board protection cap is beaten
When opening, the power supply of 205 output HIGH voltage of voltage detector, the then cut-off of switch 206, power amplifier 215 is cut off；Work as circuit board
When protection cap is closed, voltage detector 205 exports low-voltage 0V, then switch 206 is connected, and power amplifier is supplied to as power supply
215, in this way can to avoid when opening circuit board protection cap, power amplifier radiate when work it is unsmooth due to burn.Signal section
The intermediate-freuqncy signal that crossover rate is 2750MHz~2900MHz is first input to intermediate frequency amplifier after the filtering of intermediate frequency microstrip filter 207
208 and intermediate frequency amplifier 209 be amplified, after amplification, exported by intermediate frequency amplifier 209, be then given to 5 frequency multipliers
210 carry out frequency conversions, after 5 frequency-doubled conversions of 5 frequency multipliers 210, intermediate-freuqncy signal be up-converted into frequency be 13750MHz~
Then the radiofrequency signal of 14500MHz is passed through first order micro-strip radio-frequency filter 211 and is filtered, to reduce the interference to tuner,
After the filtering of first order micro-strip radio-frequency filter 211, signal, which enters after first R.F. amplifier 212 amplifies, to be exported, then
Second is carried out into second level radio frequency amplifier 213 to amplify, and is then filtered by second level micro-strip radio-frequency filter 214, with
Inhibit the interference to tuner, the radio frequency amplification by front two-stage, signal is sufficiently strong, and then radiofrequency signal is input to work(
Rate amplifier 215, drives it to be exported with maximum transmission power, to inhibit the higher hamonic wave of radio-frequency head, in power amplifier 215
Output end places a Microstrip Low-Pass 216, and after the filtering of Microstrip Low-Pass 216, finally leading to microstrip antenna 217 will
Emission of radio frequency signals is gone out.
VSAT high frequency tuner circuits module of the present invention is as shown in Figure 3, and antenna 31 is connect by radio frequency reception with amplifying unit 32
Mixing unit 33 is connect after mixing with intermediate frequency amplifying unit 34, is then exported by intermediate frequency amplifying unit 34.
VSAT tuners of the present invention realize circuit as shown in figure 4, microstrip antenna 401 receives faint radiofrequency signal,
Frequency is 10700MHz~12750MHz, and radiofrequency signal is given to first order radio frequency after the amplification of first R.F. amplifier 402
Microstrip filter 403 filters out the interference from transmitting terminal, backend amplifier is avoided to be saturated, and is amplified later by second level radio frequency
Device 404 amplifies, then radiofrequency signal is carried out second by second level radio frequency microstrip filter 405 and is filtered, and filters out to come from and have hair hang down
The interference for penetrating end, avoids backend amplifier from being saturated, and is then amplified by third level radio frequency amplifier 406, then passes through the third level
Radio frequency microstrip filter 407 carries out last time filtering, is interfered with achieving the purpose that thoroughly to eliminate Image interference and transmitting terminal, and
The local oscillator 410 and local frequency for being 9.75GHz with local frequency to 408 input terminal of frequency mixer is sent to be radiofrequency signal afterwards
One of mixing of the local oscillator 411 of 10.6GHz, local oscillator 410 and local oscillator 411 are selected by the switching of integrated switching switch
It selects, it is two frequency ranges of 950MHz~1950MHz and 1100MHz~2150MHz that radio frequency signal frequency, which is down to frequency, after mixing
Intermediate frequency, last intermediate-freuqncy signal by intermediate frequency amplifier 409 amplify after export.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work, should be covered by the protection scope of the present invention.Therefore, of the invention
Protection domain should be determined by the scope of protection defined in the claims.
Claims (8)
1. a kind of novel VSAT receivers and transmitter, it is characterised in that：Including transmitter circuit module, high frequency tuner circuit mould
Block, transmitter circuit and high frequency tuner circuit；
Wherein, transmitter circuit module includes power control circuit, the preposition pretreatment unit of intermediate frequency, lawnmower pretreatment list
Member, transmitter unit and antenna, power control circuit are the preposition pretreatment unit of intermediate frequency, lawnmower pretreatment unit, transmitting list
Member power supply, transmitter unit emit signal by antenna；
High frequency tuner circuit module includes antenna, radio frequency reception and amplifying unit, mixing unit and intermediate frequency amplifying unit；Radio frequency connects
It receives and radiofrequency signal is received by antenna with amplifying unit, and received signal transmission to mixing unit, mixing unit is through intermediate frequency
Amplifying unit exports；
Transmitter circuit includes DC conversion unit, voltage comparator, first voltage adjuster, second voltage adjuster, voltage
Detector, switch, if bandpas filter, intermediate frequency amplifier, intermediate frequency amplifier, 5 frequency multipliers, radio frequency band filter, radio frequency
Amplifier, radio frequency amplifier, radio-frequency filter, power amplifier, radio frequency low-pass filter, transmitting antenna, intermediate frequency bandpass filtering
Device, intermediate frequency amplifier, intermediate frequency amplifier, 5 frequency multipliers, radio frequency band filter, radio frequency amplifier, radio frequency amplifier, radio frequency filter
Wave device, power amplifier, radio frequency low-pass filter, transmitting antenna are sequentially connected transmission, and input terminal accesses DC conversion unit, electricity
Detector is pressed to be controlled by switching, DC conversion unit output end connects voltage detector, first voltage adjuster, second voltage
Adjuster is accessed in DC conversion unit output end；
High frequency tuner circuit includes antenna, first R.F. amplifier, first order radio-frequency filter, second level radio frequency amplifier,
Two level radio-frequency filter, third level radio frequency amplifier, third level radio-frequency filter, frequency mixer, intermediate frequency amplifier, 9.75GHz sheets
It shakes and 10.6GHz local oscillators, antenna, first R.F. amplifier, first order radio-frequency filter, second level radio frequency amplifier,
Two level radio-frequency filter, third level radio frequency amplifier, third level radio-frequency filter, frequency mixer, intermediate frequency amplifier, 9.75GHz sheets
It shakes and its input terminal of 10.6GHz local oscillators to output end is sequentially connected.
2. a kind of novel VSAT receivers as described in claim 1 and transmitter, it is characterised in that：Transmitter intermediate frequency is 2750
~2900MHz, tranmitting frequency are 13750~14500MHz；Tuner receives frequency is KU 10700~12750MHz of wave band, in
Frequency is two frequency ranges of 950~1950MHz and 1100~2150MHz.
3. a kind of novel VSAT receivers as described in claim 1 and transmitter, it is characterised in that：Transmitter and tuner electricity
Road is single-polarized antenna, and mutually orthogonal.
4. a kind of novel VSAT receivers as described in claim 1 and transmitter, it is characterised in that：High frequency tuner circuit can pass through
Integrated switching switch control local oscillator switches over action, realizes two Mid Frequencies of 950~1950MHz and 1100~2150MHz
Selection.
5. a kind of novel VSAT receivers as described in claim 1 and transmitter, it is characterised in that：The big devices of radiation at different levels frequency it
Between all place microstrip filter filtering clutter and inhibit the interference from transmitter, prevent the amplification of high frequency tuner circuit second and third grade
Device is full to close work；Simultaneously to prevent interference of the transmitter circuit to high frequency tuner circuit, placed in transmitter circuit radio frequency part
Two-stage radio-frequency microstrip filter is inhibited.
6. a kind of novel VSAT receivers as described in claim 1 and transmitter, it is characterised in that：Transmitter circuit uses micro-
Low-pass filter.
7. a kind of novel VSAT receivers as described in claim 1 and transmitter, it is characterised in that：Transmitter circuit utilizes 5
Frequency multiplier realizes the up-conversion of if-to-rf.
8. a kind of novel VSAT receivers as described in claim 1 and transmitter, it is characterised in that：It is straight in transmitter circuit
There is voltage detection circuit in flow control circuit, circuit board is burnt out because of circuit abnormality for avoiding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710250467.5A CN108736904A (en) | 2017-04-17 | 2017-04-17 | A kind of novel VSAT receivers and transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710250467.5A CN108736904A (en) | 2017-04-17 | 2017-04-17 | A kind of novel VSAT receivers and transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108736904A true CN108736904A (en) | 2018-11-02 |
Family
ID=63924993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710250467.5A Pending CN108736904A (en) | 2017-04-17 | 2017-04-17 | A kind of novel VSAT receivers and transmitter |
Country Status (1)
| Country | Link |
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| CN (1) | CN108736904A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111446975A (en) * | 2020-04-01 | 2020-07-24 | 上海航天测控通信研究所 | Satellite-borne VHF frequency band transmitter |
| CN112468167A (en) * | 2020-12-17 | 2021-03-09 | 泰州市柯普尼通讯设备有限公司 | Interference information filtering device for ship satellite VSAT system |
| CN114374315A (en) * | 2022-01-13 | 2022-04-19 | 扬州海科电子科技有限公司 | Modulator facing miniaturized switching regulator |
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| CN106374943A (en) * | 2016-11-16 | 2017-02-01 | 深圳市华讯方舟卫星通信有限公司 | Ka-band transmitter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111446975A (en) * | 2020-04-01 | 2020-07-24 | 上海航天测控通信研究所 | Satellite-borne VHF frequency band transmitter |
| CN112468167A (en) * | 2020-12-17 | 2021-03-09 | 泰州市柯普尼通讯设备有限公司 | Interference information filtering device for ship satellite VSAT system |
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| CN114374315A (en) * | 2022-01-13 | 2022-04-19 | 扬州海科电子科技有限公司 | Modulator facing miniaturized switching regulator |
| CN114374315B (en) * | 2022-01-13 | 2023-07-11 | 扬州海科电子科技有限公司 | Modulator for miniaturized switch voltage stabilizer |
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