Dual-mode ultra-wideband high-efficiency power amplification circuit

Abstract

The invention discloses a dual-mode ultra-wideband high-efficiency power amplification circuit. The power amplification circuit has two working modes of high-power output and low-power output, and the two working modes work in the same frequency band. According to the dual-mode working ultra-wideband matching network, a switch tube core serves as a switching element to be fused into a common output matching network of two modes, and large and small power mode switching of the output matching network of the amplifying circuit is achieved by means of the two different states of switching-on and switching-off of a switch. And meanwhile, in order to realize ultra-wideband impedance matching, the large power amplifier adopts a matching form of a multi-order inductance-capacitance low-pass network and a parallel inductor ground, and the inductance value of the parallel inductor can be changed along with switching of a switch in order to adapt to different modes. According to the amplifying circuit, the efficiency of the ultra-wideband power amplifier in a high-power mode is effectively improved through fusion design.

Description

technical field [0001] The invention relates to a dual-mode ultra-broadband high-efficiency power amplifier circuit, which belongs to the technical field of radio frequency microwave and millimeter wave circuits. Background technique [0002] Modern electronic systems have changed from a single function to a system, especially the integrated communication and detection system. With the ability to achieve signal amplification, the ultra-wideband power amplifier has become an indispensable core device in the system. However, communication and target detection often Different working modes are required, target detection requires higher output power, and at the same time, it is hoped that the power consumption of the whole machine is small and the efficiency is high. Communication systems generally hope that the linearity is better, but the output power does not need to be too large. Most of the current multi-mode working systems are switched by cascaded switches. The system i...

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Problems solved by technology

The system is bulky and not highly integrated

In addition, in the traditional method of realizing multi-mode through switch switching, the switch and power amplifier are separately designed and cascaded, and the loss of the switch is directly superimposed on the output end of the power amplifier, so it is difficult to improve the efficiency of the system

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