US 12,355,477 B2
RF transmitter and method for emitting RF output signal
Yu-Jiu Wang, Hsinchu (TW); Li Han Chang, Hsinchu (TW); Hao-Chung Chou, Hsinchu (TW); and Ta-Shun Chu, Hsinchu (TW)
Assigned to TRON FUTURE TECH INC., Hsinchu (TW)
Filed by TRON FUTURE TECH INC., Hsinchu (TW)
Filed on Jul. 8, 2022, as Appl. No. 17/811,313.
Claims priority of provisional application 63/223,287, filed on Jul. 19, 2021.
Prior Publication US 2023/0015197 A1, Jan. 19, 2023
Int. Cl. H04B 1/18 (2006.01); H03F 3/19 (2006.01); H04B 1/00 (2006.01); H04B 1/04 (2006.01); H04B 1/16 (2006.01)
CPC H04B 1/18 (2013.01) [H03F 3/19 (2013.01); H04B 1/0078 (2013.01); H04B 1/04 (2013.01); H04B 1/1615 (2013.01); H03F 2200/451 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio frequency (RF) transmitter, comprising:
a radiating element, arranged to receive a plurality of electrical signals to produce an RF output signal;
a chip having an amplifier circuit, wherein the amplifier circuit is configured to amplify an RF input signal to generate a plurality of amplified signals at a plurality of output terminals, respectively; and
a phase shifting circuit, located outside the chip and coupled to the output terminals and the radiating element, the phase shifting circuit being arranged to phase shift the amplified signals, and accordingly generate the electrical signals fed to the radiating element, wherein the phase shifting circuit and the radiating element are formed on a same substrate.