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1. (WO2018004899) WIRELESS DEVICE WITH A MULTI-TURN DIRECTIONAL COUPLER

Pub. No.:    WO/2018/004899    International Application No.:    PCT/US2017/034440
Publication Date: Fri Jan 05 00:59:59 CET 2018 International Filing Date: Fri May 26 01:59:59 CEST 2017
IPC: H01P 5/18
H04B 17/11
H04B 17/10
Applicants: INTEL IP CORPORATION
Inventors: WU, Jianxin
FENG, Lei
Title: WIRELESS DEVICE WITH A MULTI-TURN DIRECTIONAL COUPLER
Abstract:
A directional coupler disclosed herein may include a main line provided on a substrate, the main line having a first end connected to an input port and a second end connected to an output port. The coupler may include a coupled line disposed on the substrate, the coupled line having a first end connected to a coupled port and a second end to an isolated port. The main line is electrically isolated from the coupled line. The coupled line includes multiple turns forming a winding, and a portion of the winding overlaps with the main line. The coupled line forms a plurality of windings inductively coupled with the main line. The main line and the coupled line are routed to propagate electric signals on both lines in a same direction, and enhance inductive coupling by mutual inductance.