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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9449749 B1

PDFFull Text
Date of Patent:
Sep. 20, 2016

Filed:

Sep. 12, 2013

Signal handling apparatus for radio frequency circuits

Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Dev V. Gupta, Acton, MA (US);

Zhiguo Lai, Acton, MA (US);

Medhi Si Moussa, Acton, MA (US);

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:

Nixon Peabody LLP

Primary Examiner:

Robert Pascal

Assistant Examiner:

Kimberly Glenn

Int. Cl.
CPC ...
H01P 5/12 (2006.01); H01F 17/00 (2006.01); H03H 7/01 (2006.01); H03H 7/38 (2006.01); H01G 5/38 (2006.01); H01G 4/38 (2006.01); H01L 23/64 (2006.01); H01L 27/08 (2006.01); H01G 4/40 (2006.01); H03H 5/00 (2006.01); H03H 7/48 (2006.01); H03H 11/12 (2006.01); H01L 49/02 (2006.01);
U.S. Cl.
CPC ...
H01F 17/0013 (2013.01); H01G 4/38 (2013.01); H01G 4/40 (2013.01); H01G 5/38 (2013.01); H01L 23/642 (2013.01); H01L 27/0811 (2013.01); H03H 7/01 (2013.01); H03H 7/0138 (2013.01); H03H 7/38 (2013.01); H01F 2017/0026 (2013.01); H01L 28/10 (2013.01); H01L 2224/32225 (2013.01); H01L 2224/48091 (2013.01); H01L 2224/48227 (2013.01); H01L 2224/48465 (2013.01); H01L 2224/83385 (2013.01); H01L 2924/0002 (2013.01); H01L 2924/15311 (2013.01); H03H 5/003 (2013.01); H03H 7/0153 (2013.01); H03H 7/48 (2013.01); H03H 11/1291 (2013.01); H03H 2210/025 (2013.01); H03H 2210/036 (2013.01); H03H 2240/00 (2013.01);
Abstract

A signal handler providing high linearity in a small size, applicable across wide operating frequencies and bandwidths, while also adapted to preferred integrated circuit (IC) and printed circuit board technologies. In one implementation, a signal handling apparatus includes an input impedance transformer for receiving an input signal and matching an internal apparatus impedance, a splitter for providing N split signals, a number of signal processing circuits for processing the N split signals, a combiner for combining the N split signals into a combined signal, and output impedance transformer for receiving the combined signal and for matching the internal apparatus impedance to an output impedance of the apparatus. The apparatus may provide filtering, duplexing and other radio frequency signal processing functions. A tunable duplexer may be implemented using a vector inductor and tunable capacitor array with frequency dependent impedance transformers.

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