US 11,949,446 B2
Transformer, transmitter circuit, semiconductor chip, semiconductor package, base station, mobile device, and method for a radio frequency transmitter
Daniel Gruber, St. Andrae (AT); Mark Elzinga, Shingle Springs, CA (US); and Martin Clara, Santa Clara, CA (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Jun. 26, 2020, as Appl. No. 16/912,741.
Prior Publication US 2021/0409065 A1, Dec. 30, 2021
Int. Cl. H04L 27/00 (2006.01); H01Q 1/24 (2006.01); H01Q 23/00 (2006.01); H04B 1/04 (2006.01); H04B 1/58 (2006.01)
CPC H04B 1/582 (2013.01) [H01Q 1/246 (2013.01); H01Q 23/00 (2013.01); H04B 1/0475 (2013.01); H04B 2001/0433 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A transformer for a radio frequency transmitter circuit, comprising;
a primary coil and a secondary coil, which are configured to receive an input signal and to provide an output signal; and
a ternary coil configured to provide a feedback signal,
wherein the primary coil is configured to couple a first part of the power from the input signal to the output signal and wherein the primary coil is configured to couple a second part of the power from the input signal to the feedback signal, wherein the second part of the power is less than a quarter of the first part of the power.