CN205212785U - Radio -frequency power amplifier - Google Patents
Radio -frequency power amplifier Download PDFInfo
- Publication number
- CN205212785U CN205212785U CN201520822934.3U CN201520822934U CN205212785U CN 205212785 U CN205212785 U CN 205212785U CN 201520822934 U CN201520822934 U CN 201520822934U CN 205212785 U CN205212785 U CN 205212785U
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- Prior art keywords
- power amplifier
- unit
- amplifier unit
- radio
- amplifier
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Abstract
The utility model discloses a radio -frequency power amplifier, including limiting amplifier unit, pre -stage power amplifier unit, RF switch, final stage power amplifier unit, directional coupler and the control unit, limiting amplifier unit, pre -stage power amplifier unit, RF switch, final stage power amplifier unit, directional coupler concatenate in proper order, final stage power amplifier unit, directional coupler's signal feedback end is connected with the control unit's signal reception end, the control unit's control signal output is connected with the control signal input of RF switch. Compared with the prior art, the utility model discloses a ripe circuit and device are used to the advanced technology, are guaranteeing under the reliability prerequisite, realize that the index is optimum, this power amplifier is all solid state power amplifier, adopts advance gaN HEMT high power tube technique, rational design power amplifier link to optimize link power sum gain distribution, guarantee high efficiency, the high reliability of complete machine, and satisfy volume and weight requirement, thereby guarantee the advance of power amplifier.
Description
Technical field
The utility model relates to a kind of radio-frequency power amplifier, particularly relates to the radio-frequency power amplifier of a kind of 500MHZ-1000MHz200W.
Background technology
At radio communication field, it is no matter the transmitter of what form, we can see radio-frequency power amplifier at whole radio communication field play important role, the Main Function of radio-frequency power amplifier is in tranmitting frequency, low level signal is amplified to the power level required by long-distance transmissions.Existing broadcasting and TV 200W power amplifying device decimeter wave operating frequency is 470 ~ 860MHz; Overall dimension is 500 (wide) × 450 (deeply) × 132 (height) mm, and its operating frequency and overall dimension all can not meet the instructions for use of 500MHz ~ 1000MHz200W power amplifier module.
Utility model content
The purpose of this utility model is just to provide one to solve the problems referred to above, and it is reasonable in design, be applicable to 500-1000MHz200W radio-frequency power amplifier, this power amplifier can ensure high efficiency, the high reliability of complete machine, and meet volume and weight requirement, thus the advance of guaranteed output amplifier.
To achieve these goals, the technical solution adopted in the utility model is: a kind of radio-frequency power amplifier, comprise limiting amplifier unit, prime power amplifier unit, radio-frequency (RF) switch, final stage power amplifier unit, directional coupler and control unit, described limiting amplifier unit, prime power amplifier unit, radio-frequency (RF) switch, final stage power amplifier unit, directional coupler is connected in series successively, described final stage power amplifier unit, the signal feedback end of directional coupler is connected with the signal receiving end of control unit, the control signal output of described control unit is connected with the control signal input of radio-frequency (RF) switch.
As preferably, described limiting amplifier unit comprises first order amplifier, second level amplifier, amplitude limiter, temperature compensation attenuator and absorbing circuit composition, described first order amplifier, amplitude limiter, second level amplifier, temperature compensation attenuator are connected in series successively, radiofrequency signal inputs from first order amplifier, temperature compensated attenuator exports prime power amplifier unit to, described absorbing circuit one end is connected between amplitude limiter and second level amplifier, other end ground connection.
As preferably, described control unit is provided with emission switch, and described emission switch is electrically connected with control unit.
As preferably, described prime power amplifier unit forms primarily of 1W power amplifier unit, 15W power amplifier unit and control circuit unit.
As preferably, described 1W power amplifier unit is made up of secondary power amplifier, and prime is an amplifier block, and secondary power amplifier is made up of a power tube; Described 15W power amplifier unit is made up of a single tube amplifier; Described control circuit unit is made up of temperature sampling circuit and control circuit.
As preferably, described final stage power amplifier unit is the power amplifier unit of 250W, primarily of two high power valves, power divider, a power combiner composition.
Compared with prior art, the utility model has the advantage of: the utility model sophistication, use ripe circuit and device, under guarantee reliability prerequisite, realize index optimum; This power amplifier is all solid state power amplifier, adopts advanced GaNHEMT high power valve technology, appropriate design power amplifier link, and optimize link power and gain distribution, ensure high efficiency, the high reliability of complete machine, and meet volume and weight requirement, thus ensure the advance of power amplifier.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the theory diagram of the utility model limiting amplifier unit.
Embodiment
The utility model is described in further detail below.
Embodiment: see Fig. 1, Fig. 2, a kind of radio-frequency power amplifier being applicable to 500-1000MHz200W, comprise limiting amplifier unit, prime power amplifier unit, radio-frequency (RF) switch, final stage power amplifier unit, directional coupler and control unit, described prime power amplifier unit is primarily of 1W power amplifier unit, 15W power amplifier unit and control circuit unit composition, described final stage power amplifier unit is the power amplifier unit of 250W, described limiting amplifier unit, prime power amplifier unit, radio-frequency (RF) switch, final stage power amplifier unit, directional coupler is connected in series successively, described final stage power amplifier unit, the signal feedback end of directional coupler is connected with the signal receiving end of control unit, the control signal output of described control unit is connected with the control signal input of radio-frequency (RF) switch.Described control unit is provided with emission switch, and described emission switch is electrically connected with control unit, and control unit accepts external emission switch control rule.
Described limiting amplifier unit comprises first order amplifier, second level amplifier, amplitude limiter, temperature compensation attenuator and absorbing circuit composition, described first order amplifier, amplitude limiter, second level amplifier, temperature compensation attenuator are connected in series successively, radiofrequency signal inputs from first order amplifier, temperature compensated attenuator exports prime power amplifier unit to, described absorbing circuit one end is connected between amplitude limiter and second level amplifier, other end ground connection.The level of amplitude limiter for avoiding the peak value of signal to exceed a certain restriction, object avoids amplifier overload.The effect of amplitude limiter circuit is that amplitude output signal is limited in certain scope, that is after input voltage exceedes a certain reference value, output voltage will be limited in a certain level (being called clip level), and or else change with input voltage.The feature of this limiting amplifier unit is: when incoming level is less than-5dB, and the output of amplitude limiter changes with the input change of amplitude limiter; When incoming level is changed by-5 ~+5dBm, the output of amplitude limiter is constant, and its maximal input is+10dBm.
Prime power amplifier unit is made up of 1W power amplifier unit, 15W power amplifier unit and control circuit, and 1W power amplifier unit is made up of secondary power amplifier, and prime is an amplifier block, and gain is 12dBm, peak power output 11dBm; Second level power amplifier is made up of a power tube, and gain is 20dB, peak power output 32dBm; 15W power amplifier unit is made up of a single tube amplifier, and gain is 16dB, peak power output 44dBm; Control circuit unit is made up of temperature sampling circuit and control circuit, and temperature sampling circuit completes the extraction of temperature simulation amount, and control circuit is made up of adjustable voltage stabilizer, completes and controls temperature protection.
Final stage power amplifier unit is by two GaNHEMT high power valves, and power divider, a power combiner form.
Radio-frequency (RF) switch adopts the product of HITTIE company, and when " emission switch control " signal is low level, radio-frequency (RF) switch is in off state; When " emission switch control " signal is high level, radio-frequency (RF) switch is in opening state.
The maximum power that can bear 350W of directional coupler.
Power amplifier work is by emission switch signal controlling, and when this signal is low level, the radio-frequency (RF) switch in power amplifier is in off state, and power amplifier does not work; When this signal is high level, the radio-frequency (RF) switch in power amplifier is in logical state, power amplifier work.After the radiofrequency signal ingoing power amplifier in of-5 ~+5dBm, send into limiting amplifier, the level of RF signals that limiting amplifier exports is stabilized in+3dBm, the signal that a level is about 42dBm should be exported by+3dBm signal through the prime power amplifier unit of 15W, this signal send the final stage power amplifier unit of 250W after radio-frequency (RF) switch, and the final stage power amplifier unit of 250W exports+53dBm signal and exports through directional coupler.
Above exhaustive presentation is carried out to a kind of radio-frequency power amplifier provided by the utility model, apply specific case herein to set forth principle of the present utility model and execution mode, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, to change of the present utility model and improve will be possible, and design and the scope of accessory claim defined can not be exceeded, in sum, this description should not be construed as restriction of the present utility model.
Claims (5)
1. a radio-frequency power amplifier, it is characterized in that: comprise limiting amplifier unit, prime power amplifier unit, radio-frequency (RF) switch, final stage power amplifier unit, directional coupler and control unit, described limiting amplifier unit, prime power amplifier unit, radio-frequency (RF) switch, final stage power amplifier unit, directional coupler is connected in series successively, described final stage power amplifier unit, the signal feedback end of directional coupler is connected with the signal receiving end of control unit, the control signal output of described control unit is connected with the control signal input of radio-frequency (RF) switch, described final stage power amplifier unit is by two GaNHEMT high power valves, a power divider, a power combiner composition.
2. a kind of radio-frequency power amplifier according to claim 1, it is characterized in that: described limiting amplifier unit comprises first order amplifier, second level amplifier, amplitude limiter, temperature compensation attenuator and absorbing circuit composition, described first order amplifier, amplitude limiter, second level amplifier, temperature compensation attenuator are connected in series successively, radiofrequency signal inputs from first order amplifier, temperature compensated attenuator exports prime power amplifier unit to, described absorbing circuit one end is connected between amplitude limiter and second level amplifier, other end ground connection.
3. a kind of radio-frequency power amplifier according to claim 1, it is characterized in that: described control unit is provided with emission switch, described emission switch is electrically connected with control unit.
4. a kind of radio-frequency power amplifier according to claim 1, is characterized in that: described prime power amplifier unit forms primarily of 1W power amplifier unit, 15W power amplifier unit and control circuit unit.
5. a kind of radio-frequency power amplifier according to claim 4, it is characterized in that: described 1W power amplifier unit is made up of secondary power amplifier, prime is an amplifier block, and secondary power amplifier is made up of a power tube; Described 15W power amplifier unit is made up of a single tube amplifier; Described control circuit unit is made up of temperature sampling circuit and control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520822934.3U CN205212785U (en) | 2015-10-21 | 2015-10-21 | Radio -frequency power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520822934.3U CN205212785U (en) | 2015-10-21 | 2015-10-21 | Radio -frequency power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205212785U true CN205212785U (en) | 2016-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520822934.3U Expired - Fee Related CN205212785U (en) | 2015-10-21 | 2015-10-21 | Radio -frequency power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205212785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108241399A (en) * | 2016-12-27 | 2018-07-03 | 上海华虹集成电路有限责任公司 | Power consumption step suppression circuit |
| CN111342779A (en) * | 2020-04-14 | 2020-06-26 | 湖北楚航电子科技有限公司 | Multichannel radio frequency power amplifier subassembly |
-
2015
- 2015-10-21 CN CN201520822934.3U patent/CN205212785U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108241399A (en) * | 2016-12-27 | 2018-07-03 | 上海华虹集成电路有限责任公司 | Power consumption step suppression circuit |
| CN111342779A (en) * | 2020-04-14 | 2020-06-26 | 湖北楚航电子科技有限公司 | Multichannel radio frequency power amplifier subassembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20201021 |