7-mode gain and output power controllable K-band power amplifier

Abstract

The invention relates to a technology of millimeter wave wireless communication and specifically relates to a 7-mode gain and output power controllable K-band power amplifier. The K-band power amplifier comprises a power supply, a control power supply, a Vdd end, a Vb end, control ends Vc1, Vc2 and Vc3, an input end, an output end and an earth wire. The Vdd end and the earth wire are in bridge joint with a positive end and a negative end of the power supply. The Vb end is connected with a bias voltage. The control ends Vc1, Vc2 and Vc3 are connected with the positive end of the control power supply. The K-band power amplifier also comprises a first Balun, a first input matching circuit, a second input matching circuit, a first drive circuit, a second drive circuit, an interstage matching circuit, a gain control stage, an interstage transformer transformer, a power-stage circuit, a first output matching circuit, a second output matching circuit and a second Balun which are connected in sequence. The amplifier is characterized by controllable 7-mode power and gain pseudo number, high power gain and high output power. The amplifier is low in transmission loss, low in phase error, low in return loss and high in port isolation degree.

Description

technical field [0001] The invention belongs to the technical field of millimeter wave wireless communication, and in particular relates to a K-band power amplifier with controllable gain and output power of 7 modes. Background technique [0002] With the rapid development of intelligent transportation, radar sensors are more and more widely used in automotive driving assistance systems. 24GHz radar sensors have quickly become the most widely used in automotive driving assistance systems due to their advantages such as small beam angle, high sensitivity, and small size. Radar sensor, 24GHz power amplifier is the key component of 24GHz radar sensor, as the last stage of amplification of the transmitter in the sensor, its performance directly affects the signal transmission range and signal anti-interference ability of the whole system. The silicon-based CMOS process is the most compatible process in the semiconductor process, but its limited process limitations have led to th...

AI Technical Summary

Problems solved by technology

The silicon-based CMOS process is the most compatible process in the semiconductor process, but its limited process limitations have led to the slow development of research on silicon-based CMOS power amplifiers, research on high-gain, high-output power, and high-efficiency silicon-based CMOS power amplifiers become a technical problem

At the same time, in order to ensure the wide application of 24GHz radar sensor itself, the signal transmission range needs to be controllable, which leads to the increase of system complexity, and the 7-mode gain and output power controllable power amplifier has the potential to reduce system complexity

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