US 7,321,276 B2 | ||
Independently adjustable combined harmonic rejection filter and power sampler | ||
Todd Wayne Nichols, Cary, N.C. (US) | ||
Assigned to Harris Stratex Networks, Inc., Morrisville, N.C. (US) | ||
Filed on Jun. 30, 2005, as Appl. No. 11/169,879. | ||
Prior Publication US 2007/0001780 A1, Jan. 04, 2007 | ||
Int. Cl. H01P 5/12 (2006.01); H01P 5/18 (2006.01) |
U.S. Cl. 333—109 [333/110; 333/116] | 16 Claims |
1. A microwave variable low pass filter with directional coupling comprising:
a main transmission line;
a sub transmission line parallel and laterally spaced of said main transmission line, the sub transmission line in electromagnetic
communication with the main transmission line;
one or more stubs operably connected to said main transmission line and opposite the sub transmission line,
at least one varactor operable connected between each respective stub and ground; and,
an adjustable reactance circuit operably connected between one end of the sub transmission line and ground, wherein the at
least one varactor and adjustable reactance circuit are independently adjustable.
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