CN103812456A - Balanced type radio frequency power amplifier - Google Patents
Balanced type radio frequency power amplifier Download PDFInfo
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- CN103812456A CN103812456A CN201210438104.1A CN201210438104A CN103812456A CN 103812456 A CN103812456 A CN 103812456A CN 201210438104 A CN201210438104 A CN 201210438104A CN 103812456 A CN103812456 A CN 103812456A
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- matching network
- amplifier
- frequency power
- power amplifier
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Abstract
The invention belongs to the technical field of amplifiers, and particularly relates to a balanced type radio frequency power amplifier. The balanced type radio frequency power amplifier is high in stability and reliability and good in index of the output power. The balanced type radio frequency power amplifier comprises a first 3dB bridge, a second 3dB bridge, a first matching network, a second matching network, a third matching network, a fourth matching network, a first amplifier, a second amplifier, a first resistor, a second resistor, an input port and an output port. The balanced type radio frequency power amplifier is characterized in that the first 3dB bridge is respectively connected with the input port, the first resistor, the first matching network and the second matching network, the first matching network is connected with the second 3dB bridge through the first amplifier and the third matching network in sequence, the second matching network is connected with the second 3dB bridge through the second amplifier and the fourth matching network in sequence, and the second 3dB bridge is respectively connected with the second resistor and the output port.
Description
Technical field
the invention belongs to amplifier technical field, relate in particular to a kind of balanced type radio-frequency power amplifier.
Background technology
radio-frequency power amplifier (RF PA) is the important component part of various transmitting sets.In the front stage circuits of transmitter, the radiofrequency signal power that modulation oscillator circuit produces is very little, need to pass through a series of amplification one buffer stage, interstage amplifier section, final stage power-amplifier stage, after obtaining enough radio-frequency powers, just can be fed on antenna and radiate.In order to obtain enough large radio frequency power output, must adopt radio-frequency power amplifier.
in recent years, along with the develop rapidly in the fields such as radio communication, data communication, space communication, for the power amplifier as system core parts such as microwave communication, radar, electronic countermeasures, wideband frequency modulation transmitter, digital TV transmitters, be not only that signal is amplified to enough power levels, and all had higher requirement in bandwidth, power output, the linearity, efficiency and reliability aspect.Especially worldwide obtain today of the development of advancing by leaps and bounds in space technology, for the research of microwave power amplifier especially tool be of great significance.
existing radio-frequency power amplifier stability and reliability are not ideal enough, and the index of power output is good not.
Summary of the invention
the present invention is exactly for the problems referred to above, provides a kind of stability and reliability high, the good balanced type radio-frequency power amplifier of index of power output.
for achieving the above object, the present invention adopts following technical scheme, the present invention includes a 3dB electric bridge, the 2nd 3dB electric bridge, the first matching network, the second matching network, the 3rd matching network, the 4th matching network, the first amplifier, the second amplifier, the first resistance, the second resistance, input port and output port, its structural feature the one 3dB electric bridge respectively with input port, the first resistance, the first matching network, the second matching network is connected, the first matching network is successively by the first amplifier, the 3rd matching network is connected with the 2nd 3dB electric bridge, the second matching network is successively by the second amplifier, the 4th matching network is connected with the 2nd 3dB electric bridge, the 2nd 3dB electric bridge respectively with the second resistance, output port is connected.
as a kind of preferred version, the first amplifier of the present invention and the second amplifier all adopt FLL120MK amplifier.
as another kind of preferred version, the first resistance of the present invention and the second resistance are 50 ohm.
beneficial effect of the present invention.
the present invention cooperatively interacts by 3dB electric bridge, matching network, amplifier, resistance, make radio-frequency power amplifier have high stability and high reliability, and the index of power output is good.
Accompanying drawing explanation
in order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with the drawings and the specific embodiments, the present invention is further elaborated.Should be appreciated that embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
fig. 1 is schematic block circuit diagram of the present invention.
Embodiment
as shown in the figure, the present invention includes a 3dB electric bridge, the 2nd 3dB electric bridge, the first matching network, the second matching network, the 3rd matching network, the 4th matching network, the first amplifier, the second amplifier, the first resistance, the second resistance, input port and output port, the one 3dB electric bridge respectively with input port, the first resistance, the first matching network, the second matching network is connected, the first matching network is successively by the first amplifier, the 3rd matching network is connected with the 2nd 3dB electric bridge, the second matching network is successively by the second amplifier, the 4th matching network is connected with the 2nd 3dB electric bridge, the 2nd 3dB electric bridge respectively with the second resistance, output port is connected.
described the first amplifier and the second amplifier all adopt FLL120MK amplifier.
described the first resistance and the second resistance are 50 ohm.
combined coefficient is as the important indicator in balance amplifier design, and the phase and magnitude while synthesizing with synthesizer insertion loss, two-way amplifier is relevant.
pCB of the present invention can be two-ply, and bottom is floor file, and cabling is all walked from top layer.
be understandable that, above about specific descriptions of the present invention, only for being described, the present invention is not limited to the described technical scheme of the embodiment of the present invention, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as meet, all within protection scope of the present invention.
Claims (3)
1. balanced type radio-frequency power amplifier, comprise a 3dB electric bridge, the 2nd 3dB electric bridge, the first matching network, the second matching network, the 3rd matching network, the 4th matching network, the first amplifier, the second amplifier, the first resistance, the second resistance, input port and output port, its structural feature the one 3dB electric bridge respectively with input port, the first resistance, the first matching network, the second matching network is connected, the first matching network is successively by the first amplifier, the 3rd matching network is connected with the 2nd 3dB electric bridge, the second matching network is successively by the second amplifier, the 4th matching network is connected with the 2nd 3dB electric bridge, the 2nd 3dB electric bridge respectively with the second resistance, output port is connected.
2. balanced type radio-frequency power amplifier according to claim 1, is characterized in that described the first amplifier and the second amplifier all adopt FLL120MK amplifier.
3. balanced type radio-frequency power amplifier according to claim 1, is characterized in that described the first resistance and the second resistance are 50 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210438104.1A CN103812456A (en) | 2012-11-06 | 2012-11-06 | Balanced type radio frequency power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210438104.1A CN103812456A (en) | 2012-11-06 | 2012-11-06 | Balanced type radio frequency power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103812456A true CN103812456A (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210438104.1A Pending CN103812456A (en) | 2012-11-06 | 2012-11-06 | Balanced type radio frequency power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103812456A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400774A (en) * | 2018-03-22 | 2018-08-14 | 上海唯捷创芯电子技术有限公司 | A kind of balanced type radio-frequency power amplifier, chip and communication terminal |
-
2012
- 2012-11-06 CN CN201210438104.1A patent/CN103812456A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400774A (en) * | 2018-03-22 | 2018-08-14 | 上海唯捷创芯电子技术有限公司 | A kind of balanced type radio-frequency power amplifier, chip and communication terminal |
| CN108400774B (en) * | 2018-03-22 | 2020-06-02 | 上海唯捷创芯电子技术有限公司 | Balanced radio frequency power amplifier, chip and communication terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140521 |