CN203590157U - Dismountable double-tube efficient power amplification module structure - Google Patents
Dismountable double-tube efficient power amplification module structure Download PDFInfo
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- CN203590157U CN203590157U CN201320696694.8U CN201320696694U CN203590157U CN 203590157 U CN203590157 U CN 203590157U CN 201320696694 U CN201320696694 U CN 201320696694U CN 203590157 U CN203590157 U CN 203590157U
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Abstract
The utility model provides a dismountable double-tube efficient power amplification module structure, which relates to the field of radio and television emission manufacturing. The dismountable double-tube efficient power amplification module structure consists of a signal distribution amplification part and a movably connected DOHERTY synthesis part, wherein the signal distribution amplification part comprises a 90-degree orthogonal distributor, two double-tube wide band push-pull power amplifiers and four blocking capacitors, input radio frequency signals are connected to the input end of the 90-degree orthogonal distributor, and the two output ends of the 90-degree orthogonal distributor are connected to the DOHERTY synthesis part respectively and sequentially through the blocking capacitors, the double-tube wide band push-pull power amplifiers and the blocking capacitors. The DOHERTY synthesis part is formed by eight DOHERTY synthesis plates which are respectively made according to different signal frequency bands, in the use process, the DOHERTY synthesis plates in different frequency bands are spliced and assembled with a distribution amplification part A according to requirements of the work frequency band. The dismountable double-tube efficient power amplification module structure can realize the full-frequency-band coverage of digital efficient emitting machine production, and has the characteristics that the structure is simple, the debugging is easy, and the cost is reduced.
Description
Technical field
The utility model relates to radio and television transmitting manufacture field, particularly detachable Double-pipe high-efficient power amplifier module structure.
Background technology
In efficient digital TV transmitter, DOHERTY power amplifier is a core component that improves transmitter frequency.Due to the technical limitations of the efficient power amplifier of DOHERTY, the frequency band of each power amplifier only has 40MHz left and right bandwidth, the frequency range of radio and television decimeter range is that 470 ~ 566MHz and 606 ~ 860MHz(commonly use 810MHz), each channel 8MHz bandwidth, at least needs the power amplifier of 8 different parameters could cover whole decimever television frequency range.
In prior art, the structure of DOHERTY is to utilize two single tubes of ambipolar field effect power tube, frequency range (40MH left and right) at needs is adjusted to optimal parameter, one is operated in the A/B class power amplifier of deciding, another is operated in C class and does peak value power amplifier, then by 1/4 wavelength line, carries out DOHERTY and synthesize, and becomes an independently power amplifier module, two independent DOHERTY modules are synthetic through 90 degree quadrature bridges again, realize PD output.There are two outstanding shortcomings in this kind of frame mode: 1, more complicated when design and test adjustment: first of a bipolar power single tube will be adjusted to indices in the 40MHz of needs bandwidth range, it is synthetic that recycling 1/4 wavelength line carries out DOHERTY again.Phase mutual impedance traction while being connected with 1/4 wavelength line DOHERTY is synthetic because of single tube output is larger, makes to adjust workload and increases.Press frequency range of 40MHz bandwidth and divide, whole decimever television frequency range is divided 8 frequency ranges, just need to adjust the power amplifier of 8 different parameters, could meet frequency band coverage requirement, and workload is large, commercialization is more difficult.2, different frequency range parameter difference, is used device wide in variety, easily causes stock material to overstock.Because single tube output is the impedance transformation of microstrip line LC structure, cannot make broadband, the each power amplifier parameter of 8 power amplifiers that covers whole decimeter wave frequency range can be different, by at least 4 kinds of different parameters devices of each power amplifier, calculate, 8 power amplifiers at least will be used the device of 32 kinds of different parameters, use the wide in variety of device, increased stock.Due to the existence of these two shortcomings, make efficient power amplifier module commercialization difficulty, be difficult to form in batches, the productibility of efficient television transmitter is reduced, manufacturing cost increases.
Summary of the invention
For the shortcoming existing in above-mentioned prior art, the purpose of this utility model is to provide detachable Double-pipe high-efficient power amplifier module structure.It can be realized the Whole frequency band that the efficient transmitter of numeral produces and cover, have simple in structure, debug easy, cost-saving feature.
In order to reach foregoing invention object, the technical solution of the utility model realizes as follows:
Detachable Double-pipe high-efficient power amplifier module structure, its design feature is that it distributes amplifier section to form with the DOHERTY composite part being connected of living by signal.Signal distributes amplifier section to comprise the orthogonal distributor of 90 degree, two two-tube broadband push-pull power amplifiers and four capacitances.The radiofrequency signal of input is connected to the input of the orthogonal distributor of 90 degree, and two outputs of the orthogonal distributor of 90 degree are connected to respectively DOHERTY composite part successively after capacitance, two-tube broadband push-pull power amplifier and capacitance.DOHERTY composite part is 8 DOHERTY hard boards making respectively according to signal frequency range difference, during use, according to the requirement of working frequency range, the DOHERTY hard board of different frequency range is bolted together with distributing amplifier section A.
In above-mentioned detachable Double-pipe high-efficient power amplifier module structure, between described each device, use 50 ohm microstrip to connect.
The utility model is owing to having adopted said structure, is very easy to realize the conversion of operating frequency by changing detachable DOHERTY hard board.The utility model is produced the digital transmitter of different channel to simplify, and has reduced to produce the stock that gets the raw materials ready and reduced production cost, has improved production efficiency, more easily realizes mass production.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the circuit diagram of three DOHERTY hard boards in the utility model embodiment.
Embodiment
Referring to Fig. 1, the signal that the detachable Double-pipe high-efficient power amplifier module of the utility model structure connects by living distributes amplifier section A and DOHERTY composite part B to form.Signal distributes amplifier section A to comprise the orthogonal distributor of 90 degree 1, two two-tube broadband push-pull power amplifiers 3 and four capacitances 2.The radiofrequency signal of input is connected to the input of the orthogonal distributor 1 of 90 degree, and two outputs of the orthogonal distributor 1 of 90 degree are connected to DOHERTY composite part B respectively successively after adjustable microstrip line, capacitance 2, two-tube broadband push-pull power amplifier 3 and capacitance 2.DOHERTY composite part B is 8 or the N piece DOHERTY hard board of making respectively according to signal frequency range difference, during use, according to the requirement of working frequency range, the DOHERTY hard board of different frequency range is bolted together with distributing amplifier section A.Between each device, use 50 ohm microstrip to connect.
When prepared by the utility model, signal distributes amplifier section A and these two parts of DOHERTY composite part B circuit board separately, and structure is independent, during application, is bolted together, and forms a complete efficient power amplifier module.The present invention changes to realize the application of efficient power amplifier module unlike signal frequency range by changing the simple structure of the connection DOHERTY hard board B that lives.Signal distributes the two-tube broadband push-pull power amplifier 3 in amplifier section A to adopt the ambipolar field effect power tube that two models are BLF888B, and one is done the main power amplifier of A category-B work, and another does the peak value power amplifier of C class work.Every two-tube broadband push-pull power amplifier 3 adopts Ba Lun to distribute synthesis mode that the fan-out capability of power tube is adjusted into broadband, it is synthetic that the amplifying signal that two two-tube broadband push-pull power amplifiers 3 are exported carries out DOHERTY by 1/4 wavelength line again, forms a complete efficient power amplifier module.Due to power amplifier part wideband operation, can cover whole decimeter wave frequency range, when efficient power amplifier module different frequency range work, without changing signal, distribute amplifier section A.This piece circuit board of DOHERTY composite part B is the condition that guarantees efficient power amplifier module efficiency operation, due to the feature of DOHERTY technology, the in the situation that of guaranteed efficiency index request, need to be divided into 8 or N frequency range according to 40MHz bandwidth, each frequency range is comprised of a circuit board, changes in use the DOHERTY hard board of different frequency range according to the requirement of working frequency range.Referring to Fig. 2, these 8 DOHERTY hard boards, when design, according to the wavelength of different frequency range, design different microstrip transmission line length.For realizing the working frequency range of changing easily DOHERTY hard board and change efficient power amplifier module, when carrying out DOHERTY hard board structural design, to guarantee: each plate structure is measure-alike, signal link position is identical, installation fixed hole position major part is identical, and position, different hole should not interfere with each other yet.
During the utility model work, the radiofrequency signal of input is divided into two-way after the orthogonal distributor 1 of 90 degree, through 50 ohm of adjustable microstrip lines and capacitance 2, to two-tube broadband push-pull power amplifier 3, carry out signal amplification respectively, radiofrequency signal after amplification is exported to DOHERTY hard board is synthetic through capacitance 2, power output 210w.
Claims (2)
1. detachable Double-pipe high-efficient power amplifier module structure, it is characterized in that, it distributes amplifier section (A) to form with the DOHERTY composite part (B) being connected of living by signal, signal distributes amplifier section (A) to comprise the orthogonal distributor of 90 degree (1), two two-tube broadband push-pull power amplifiers (3) and four capacitances (2), the radiofrequency signal of input is connected to the input of the orthogonal distributor of 90 degree (1), two outputs of the 90 orthogonal distributors of degree (1) are respectively successively through capacitance (2), after two-tube broadband push-pull power amplifier (3) and capacitance (2), be connected to DOHERTY composite part (B), DOHERTY composite part (B) is 8 DOHERTY hard boards making respectively according to signal frequency range difference, during use, according to the requirement of working frequency range, the DOHERTY hard board of different frequency range is bolted together with distributing amplifier section (A).
2. detachable Double-pipe high-efficient power amplifier module structure according to claim 1, is characterized in that, uses 50 ohm microstrip to connect between described each device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320696694.8U CN203590157U (en) | 2013-11-07 | 2013-11-07 | Dismountable double-tube efficient power amplification module structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320696694.8U CN203590157U (en) | 2013-11-07 | 2013-11-07 | Dismountable double-tube efficient power amplification module structure |
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| Publication Number | Publication Date |
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| CN203590157U true CN203590157U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320696694.8U Expired - Fee Related CN203590157U (en) | 2013-11-07 | 2013-11-07 | Dismountable double-tube efficient power amplification module structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108336971A (en) * | 2017-01-17 | 2018-07-27 | 株式会社村田制作所 | Power amplifier module |
| EP3306816A4 (en) * | 2015-06-08 | 2019-01-09 | Nec Corporation | Power amplification device and television signal transmission system |
| CN109361410A (en) * | 2018-12-13 | 2019-02-19 | 贵州航天电子科技有限公司 | A kind of high power solid state transmitter circuitry |
-
2013
- 2013-11-07 CN CN201320696694.8U patent/CN203590157U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3306816A4 (en) * | 2015-06-08 | 2019-01-09 | Nec Corporation | Power amplification device and television signal transmission system |
| US10250204B2 (en) | 2015-06-08 | 2019-04-02 | Nec Corporation | Power amplification device and television signal transmission system |
| US10587230B2 (en) | 2015-06-08 | 2020-03-10 | Nec Corporation | Power amplification device and television signal transmission system |
| EP3661052A1 (en) * | 2015-06-08 | 2020-06-03 | NEC Corporation | Power amplification device and television signal transmission system |
| CN108336971A (en) * | 2017-01-17 | 2018-07-27 | 株式会社村田制作所 | Power amplifier module |
| CN108336971B (en) * | 2017-01-17 | 2022-01-11 | 株式会社村田制作所 | Power amplifying module |
| CN109361410A (en) * | 2018-12-13 | 2019-02-19 | 贵州航天电子科技有限公司 | A kind of high power solid state transmitter circuitry |
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| 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 |
Granted publication date: 20140507 Termination date: 20191107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |