Frequency multiplier, signal transmitter and radar chip
AssigneeCalterah Semiconductor Technology (Shanghai) Co., Ltd.
InventorsWentao Lv, Wenting Zhou
Life of this patent
Estimating the term…
Abstract
Disclosed are a frequency multiplier, a signal transmitter and a radar chip. The frequency multiplier includes a signal generator that is configured to receive an FMCW signal and output a square wave signal at a frequency same as a frequency of the FMCW signal; and a third harmonic amplifier that is coupled to the signal generator and is configured to amplify a third harmonic wave in the square wave signal and output a frequency-tripled FMCW signal. The above-mentioned solution can improve the generation efficiency of the frequency-tripled signal.
Claims17
A signal transceiver, comprising a Frequency-Modulated Continuous Wave (FMCW) signal generator, a frequency multiplier circuit comprising a frequency multiplier, and a power amplifier;
- wherein,
- the FMCW signal generator is configured to generate an FMCW signal under control of a frequency division adjustment signal;
- the frequency multiplier circuit is coupled to the FMCW signal generator, and configured to convert a frequency of the FMCW signal into a radio frequency band by using the frequency multiplier, to obtain a radio frequency FMCW signal;
- the power amplifier is coupled with the frequency multiplier circuit, and configured to perform power amplification on the radio frequency FMCW signal and output a radio frequency transmitted signal;
- wherein the frequency multiplier comprises:
- a signal generator, configured to receive the FMCW signal and output a square wave signal at a frequency same as a frequency of the FMCW signal;
- and
- a third harmonic amplifier, coupled to the signal generator and configured to amplify a third harmonic wave in the square wave signal and output a frequency-tripled FMCW signal.
Dependencies are inferred from the claim text.