US 11,736,150 B2
Compact low-loss reflection type phase shifter
Chuan Wang, San Diego, CA (US); Maziar Hedayati, Los Angeles, CA (US); Bhushan Shanti Asuri, San Diego, CA (US); Muhammad Hassan, San Diego, CA (US); Chinmaya Mishra, San Diego, CA (US); and Anosh Davierwalla, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Sep. 25, 2021, as Appl. No. 17/485,364.
Prior Publication US 2023/0095788 A1, Mar. 30, 2023
Int. Cl. H04B 5/00 (2006.01); H01Q 3/36 (2006.01); H03H 7/20 (2006.01)
CPC H04B 5/0081 (2013.01) [H01Q 3/36 (2013.01); H03H 7/20 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A wireless communication apparatus, comprising:
a reflective coupler with a tuned termination comprising a first reflection signal terminal, a second reflection signal terminal, a third reflection signal terminal, and a fourth reflection signal terminal;
a first variable capacitive element coupled from the first reflection signal terminal to the second reflection signal terminal;
a second variable capacitive element coupled from the third reflection signal terminal to the fourth reflection signal terminal;
a first inductive element having a first end and a second end, wherein the first end of the first inductive element is coupled to the first reflection signal terminal;
a second inductive element having a first end coupled to the second end of the first inductive element, and a second end coupled to the third reflection signal terminal;
a third inductive element having a first end and a second end, wherein the first end of the third inductive element is coupled to the second reflection signal terminal;
a fourth inductive element having a first end coupled to the second end of the third inductive element, and a second end coupled to the fourth reflection signal terminal;
a third variable capacitive element coupled from the second end of the first inductive element to the second end of the third inductive element; and
a fourth variable capacitive element coupled from the first end of the second inductive element to the first end of the fourth inductive element.