Single chip power amplifier

Abstract

The invention relates to the technical field of integrated circuit design and manufacture, in particular to a single chip power amplifier which is widely used for various kinds of active radar components of W wave band millimeter waves and communication systems. An input match circuit is integrated on a single chip, the input end of the input match circuit is connected with an external signal input source, the output end of the input match source is sequentially connected with a four-level transistor amplifier, an output match circuit and a power synthesis circuit in series and then outputs outside, wherein the four-level transistor amplifier comprises a first level transistor amplifier, a second level transistor amplifier, a third level transistor amplifier, and a fourth level transistor amplifier. The single chip power amplifier can be widely used for the fields of various kinds of active radar components of W wave band and millimeter wave communication systems. The single chip power amplifier has the advantages of being wide in working frequency range, stable in full frequency range property, and capable of effectively decreasing an area of a chip and loss, and achieving high power output of the chip.

Description

technical field [0001] The invention relates to the technical field of integrated circuit design and manufacture, in particular to a single-chip power amplifier widely used in W-band various active radar components and millimeter wave communication systems. Background technique [0002] The power amplifier is a key component of high-sensitivity receivers in the fields of satellite communication, radar communication, etc. Through the power amplifier, signal amplification and power output are realized. [0003] Monolithic microwave integrated circuit (MMIC) has become the best choice for designing and manufacturing millimeter-wave power amplifier integrated circuits because of its low circuit loss, low noise, wide frequency bandwidth, large dynamic range, high power, high additional efficiency, and strong resistance to electromagnetic radiation. One of the best choices. W-band power amplifiers using MMIC technology are widely used in military and civilian applications such as...

AI Technical Summary

Problems solved by technology

An important and difficult point in the design of power amplifiers is the stability of the circuit, because there is a high gain and noise in the lower frequency band, so it is easy to cause low-frequency oscillation, so that the entire circuit cannot work stably

[0004] In order to stabilize the circuit, it is usually necessary to add a matching circuit between the stages of the multi-stage amplifier. The traditional matching circuit is a resistance-capacitance coupling circuit. This coupling circuit can stabilize the circuit with relatively small resistance and capacitance, but This kind of coupling circuit needs to occupy a large circuit area, and the matching circuit is a narrowband structure with poor broadband performance. It is difficult to meet the broadband requirements of the matching circuit in the W-band power amplifier, and it is difficult to achieve high power output of the amplifier.

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