US 11,942,906 B2
Transmitter having harmonic impedance adjustment circuit
Ting-Yao Huang, HsinChu (TW); Teng-Yuan Chang, HsinChu (TW); Po-Chih Wang, HsinChu (TW); and Ka-Un Chan, HsinChu (TW)
Assigned to Realtek Semiconductor Corp., HsinChu (TW)
Filed by Realtek Semiconductor Corp., HsinChu (TW)
Filed on Feb. 7, 2022, as Appl. No. 17/666,530.
Claims priority of application No. 110107940 (TW), filed on Mar. 5, 2021.
Prior Publication US 2022/0286096 A1, Sep. 8, 2022
Int. Cl. H04L 27/00 (2006.01); H03F 1/56 (2006.01); H03F 3/19 (2006.01)
CPC H03F 1/56 (2013.01) [H03F 3/19 (2013.01); H03F 2200/222 (2013.01); H03F 2200/387 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A transmitter, comprising:
a mixer, configured to mix a first baseband signal with a first oscillation signal to generate a first mixed signal to a first node, and to mix a second baseband signal with a second oscillation signal to generate a second mixed signal to a second node;
a first harmonic impedance adjustment circuit, coupled between the first node and the second node, configured to reduce harmonic components of the first mixed signal and the second mixed signal to generate an adjusted first mixed signal and an adjusted second mixed signal, respectively; and
an amplifier, coupled to the first harmonic impedance adjustment circuit, configured to generate an amplified signal according to the adjusted first mixed signal and the adjusted second mixed signal.