Frequency doubler and tripler based on push-push

Abstract

The invention provides a push-push-based frequency doubler and tripler. The push-push-based frequency doubler and tripler comprises an NMOS (N-channel Metal Oxide Semiconductor) transistor M1, an NMOS transistor M2, a neutralizing capacitor Cp1, a neutralizing capacitor Cp2 and a transformer TR2, one end of a primary coil of the transformer TR1 is connected with the PortI end, the other end of the primary coil of the transformer TR1 is grounded, one end of a secondary coil of the transformer TR1 is connected with a grid electrode of the NMOS transistor M1 and one end of the neutralizing capacitor Cp1, and the other end of the secondary coil of the transformer TR1 is connected with a grid electrode of the NMOS transistor M2 and one end of the neutralizing capacitor Cp2. The frequency multiplier is based on a push-push structure, and meanwhile, the neutralizing capacitor is added, so that the conversion gain of the frequency multiplier is improved. And meanwhile, a transformer is used for distinguishing and extracting a secondary signal and a tertiary signal. And for the third harmonic signal, the ILB is used for buffering and amplifying, so that the fundamental wave suppression degree of the third harmonic signal is improved. Secondary and tertiary signals are output at the same time, the output bandwidth of the circuit is improved, and the overall layout area and power consumption are reduced through the structure.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a push-push-based double or triple frequency multiplier. Background technique [0002] With the continuous development of wireless communication technology, the working frequency of the current communication system has begun to move towards the radio frequency setting terahertz frequency band. At the same time, requirements for lower power consumption, higher frequency, larger bandwidth, and lower cost are also put forward for wireless communication systems. As for the frequency synthesis module, which is one of the core circuits of the transceiver module, the frequency multiplier can simply and directly increase the frequency of the output signal of the frequency synthesis module. In addition, in the transmitter, when the frequency of the local oscillator signal and the output signal of the power amplifier are similar, the output signal of the power a...

AI Technical Summary

Problems solved by technology

[0010] The present invention mainly aims to solve the problems of insufficient bandwidth, large chip area and high power consumption of the traditional frequency multiplier

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