The invention discloses a radio frequency power amplifier, which comprises an analog circuit unit and a digital control circuit board, wherein the analog circuit unit is arranged in a heat conducting case, the digital control circuit board comprises a first wave band switch and a second wave band switch, and the radio frequency power amplifier concretely comprises a low-power prime amplifier, a high-power post amplifier, the first wave band switch, a low-pass wave filter, the second wave band switch, a directional coupler and a self check switch which are sequentially connected with the emitting input end, wherein one path of the self detection switch is connected to an emitting antenna through a receiving and emitting switch, and the other path of the self detection switch is connected with a bandpass wave filter and a signal receiving end The products have the advantages of high integration degree, high efficiency and small nonlinear distortion of signals

Radio frequency power amplifier

The present invention provides a circulator power amplifier circuit and a connection method thereof. Wherein, the circulator power amplifier circuit includes a power amplifier, a circulator, a power load and a load. An output end of the power amplifier is connected to an input end of the circulator, the load is connected to an output end of the circulator and the power load is connected to the load end of the circulator, wherein, the circulator is an N-stage circulator or an M-port circulator, where both N and M are integers greater than one. The above circulator power amplifier circuit connected through using the circulator power amplifier circuit connection method increases the isolation for the circulator, and it is of great significance in terms of improving a standing wave of the power amplifier, ensuring stability of specification, preventing mismatch damages of the power amplifier and increasing reliability of the power amplifier.

Circulator power amplifier circuit and design method therefor

Linear microwave power amplifier

The invention provides a data link radio-frequency system. The data link radio-frequency system comprises a local oscillation frequency source, a transmitting channel and a receiving channel, whereinthe local oscillation frequency source is used for generating two paths of first local oscillation signal and second local oscillation signal which are coherent with each other; the transmitting channel is used for performing frequency mixing on a signal input by a signal processor and the second location oscillation signal one after another, up-converting the mixed signal to a waveband of the first location oscillation signal, and outputting the mixed signal to an antenna; and the receiving channel is used for performing frequency mixing on a signal input by the antenna and the first local oscillation signal, down-converting the mixed signal to a waveband of the second local oscillation signal, and outputting the mixed signal to the signal processor.

Data link radio-frequency system

The invention provides a transmitting power regulation device. By means of related simulation and digital gain adjustment, nonlinear distortion is supplemented, the gain amplitude of a signal processed through a leader sequence and nonlinear distortion reverse supplementation is adjusted, power consumption is lowered, efficiency and robustness are improved, and the gain adjustment of the whole transmission link is completed.

Transmitting power regulation method and device

The utility model relates to a power amplifier, in particular to a 3W multi-carrier power amplifier in a TD-SCDMA system base station, which is characterized by comprising a first power amplifier circuit, a first low-noise release circuit, a power supply and a control circuit and a first input-output connector (B1), wherein the power supply and the control circuit are provided with the power supply and control signals, the first power amplifier circuit comprises a first input connector (A1), a first adjustable attenuator (1), a first-stage amplifier (2) of the first power amplifier circuit, a first temperature compensation attenuator (3), a second-stage amplifier (4) of the first power amplifier circuit, a third-stage amplifier (5) of the first power amplifier circuit, a fourth-stage amplifier (6) of the first power amplifier circuit, a first directional coupler (7), a first circulator (8), a first RF switch (9) of the first power amplifier circuit, a first coupler (10), a second RF switch (11) of the first power amplifier circuit, a first absorbing load (31) and a second absorbing load (32). The amplifier has good linear index and high working efficiency and can be widely used in the TD-SCDMA base station.

3W multi- carrier power amplifier of TD-SCDMA system base station

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3W multi- carrier power amplifier of TD-SCDMA system base station