US 11,057,123 B1
Transceiver and transceiver calibration method
Yuan-Shuo Chang, Hsinchu (TW); and Tzu Ming Kao, Hsinchu (TW)
Assigned to REALTEK SEMICONDUCTOR CORPORATION, Hsinchu (TW)
Filed by REALTEK SEMICONDUCTOR CORPORATION, Hsinchu (TW)
Filed on Jul. 9, 2020, as Appl. No. 16/925,298.
Claims priority of application No. 109100339 (TW), filed on Jan. 6, 2020.
Int. Cl. H04B 17/14 (2015.01); H04B 17/13 (2015.01); H04B 17/00 (2015.01); H04B 1/38 (2015.01)
CPC H04B 17/13 (2015.01) [H04B 1/38 (2013.01); H04B 17/0085 (2013.01); H04B 17/14 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A transceiver, comprising:
a calibration signal generation unit, configured to generate a first test signal and a second test signal to a transmission unit in a gain calibration mode;
the transmission unit, configured to generate a combined signal according to the first test signal, the second test signal and a transmission gain, wherein the transmission unit includes:
a first digital-to-analog converter, configured to perform digital-to-analog conversion to the first test signal to obtain a first analog signal;
a second digital-to-analog converter, configured to perform digital-to-analog conversion to the second test signal to obtain a second analog signal;
a first transmission gain unit, configured to provide a gain to the first analog signal according to the transmission gain so as to generate a first post-gain signal;
a second transmission gain unit, configured to provide a gain to the second analog signal according to the transmission gain so as to generate a second post-gain signal;
a self-mixer, configured to perform self-mixing to the combined signal to generate a self-mixing signal;
a receiving unit, configured to generate a receiving signal according to the self-mixing signal;
a first Fourier transformer, configured to calculate a power of the receiving signal at a specific frequency; and
a gain calibration unit, configured to adjust the transmission gain according to the power of the specific frequency in the gain calibration mode.