US 9,812,757 B2 | ||
RF coupler having coupled line with adjustable length | ||
Nuttapong Srirattana, Billerica, MA (US); David Scott Whitefield, Andover, MA (US); David Ryan Story, Ladera Ranch, CA (US); and Zhiyang Liu, Dunstable, MA (US) | ||
Assigned to SKYWORKS SOLUTIONS, INC., Woburn, MA (US) | ||
Filed by SKYWORKS SOLUTIONS, INC., Woburn, MA (US) | ||
Filed on Jun. 19, 2015, as Appl. No. 14/745,213. | ||
Claims priority of provisional application 62/090,015, filed on Dec. 10, 2014. | ||
Claims priority of provisional application 62/110,248, filed on Jan. 30, 2015. | ||
Prior Publication US 2016/0172740 A1, Jun. 16, 2016 | ||
Int. Cl. H01P 5/18 (2006.01); H01P 5/12 (2006.01) |
CPC H01P 5/185 (2013.01) | 22 Claims |
1. A radio frequency coupler comprising:
a power input port, a power output port, a coupled port, and an isolation port;
a main transmission line electrically connected between the power input port and the power output port;
a multi-section coupled line having a first section, a second section, and a third section, an effective length of the multi-section
coupled line being a length of the multi-section coupled line electrically connected between the coupled port and the isolation
port, the multi-section coupled line being configured to electromagnetically couple a portion of radio frequency power traveling
between the power input port and the power output port to provide coupled power at the coupled port;
a first switch disposed in series between the first and second sections of the multi-section coupled line and configured to
adjust the effective length of the multi-section coupled line by selectively electrically connecting the first section to
the second section; and
a second switch disposed in series between the second and third sections of the multi-section coupled line and configured
to further adjust the effective length of the multi-section coupled line by selectively electrically connecting the third
section to one of the first section and the second section.
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