Millimeter wave power amplifier

Abstract

The invention discloses a millimeter wave power amplifier which comprises a signal input end, a signal output end, a power matching unit, a power distribution and synthesis matching unit and a power amplification unit, and the power distribution and synthesis matching unit further comprises a first resistor, a second resistor and a grounding transmission line. In the power distribution synthesis matching unit, the first end of a first resistor and the first end of a second resistor are connected with the first end of a grounding transmission line, the second end of the grounding transmission line is grounded, the second end of the first resistor is connected with the second end of a second T-shaped structure, and the second end of the second resistor is connected with the second end of a third T-shaped structure. Based on the prior art, the bandwidth is broadened by adding components on the circuit, the isolation degree of signals between branches is improved by adding the first resistor and the second resistor while the size of the circuit is not increased, and the circuit loss is reduced. The millimeter wave power amplifier chip can be realized in multiple processes, and huge benefits are brought to design and manufacturing of the millimeter wave power amplifier chip.

Description

technical field [0001] The present invention relates to the technical field of millimeter wave communication, in particular to a millimeter wave power amplifier. Background technique [0002] In recent years, with the gradual depletion of microwave low-frequency spectrum resources, millimeter wave resources have attracted more and more attention from researchers in both military and civilian fields. As a key component in the millimeter wave communication system, the millimeter wave power amplifier mainly plays a role in increasing the output power of the system. [0003] In the prior art, a millimeter wave amplifier usually includes a signal input terminal, a signal output terminal, a power matching unit, and a power amplification unit. When high power output is required, a power distribution synthesis matching unit is also introduced. [0004] Specifically, one power distribution, synthesis and matching unit of the power amplifying unit power amplifying unit includes at l...

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Problems solved by technology

[0008]The general way to widen the bandwidth is to connect components in series and parallel on the power matching circuit, but the general way of series and parallel connection will further increase the circuit size and generate more losses, resulting in The performance of the power amplifier deteriorates

For example, the conventional power distribution synthesis matching unit in Figure 1 is The basis is to merge a second level of circuit between the second T-shaped structure 02, the third T-shaped structure 03 and the first T-shaped structure 01 to form Figure 2 shows the broadband power distribution synthesis matching unit, which can widen the insertion loss bandwidth S21 and S31 at this time, but the circuit size increases

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