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.

Date of Patent:
Aug. 14, 2018

Filed:

Aug. 22, 2016
Applicant:

Mediatek Inc., Hsin-Chu, TW;

Inventors:

Chien-Cheng Lin, Taichung, TW;

Jui-Chih Kao, New Taipei, TW;

Assignee:

MediaTek Inc., Hsin-Chu, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/00 (2006.01); H03H 11/04 (2006.01); H03H 7/01 (2006.01);
U.S. Cl.
CPC ...
H03H 11/04 (2013.01); H03H 7/0115 (2013.01); H03H 7/0153 (2013.01); H03H 7/1758 (2013.01); H03H 2007/013 (2013.01); H03H 2210/025 (2013.01); H03H 2210/026 (2013.01);
Abstract

A frequency tunable filter and an associated apparatus are provided, where the frequency tunable filter may include a plurality of ports including an input port and an output port, and may further include an inductor-capacitor (LC) resonator, a switching unit that is coupled between the LC resonator and a ground terminal of the frequency tunable filter, and a resonance adjustment unit that is coupled between the LC resonator and the ground terminal. For example, the LC resonator may include a first terminal coupled to each of the input port and the output port, and may further include a second terminal, the switching unit may selectively provide a conduction path between the second terminal of the LC resonator and the ground terminal, and the resonance adjustment unit may selectively change a resonance characteristic of the LC resonator.


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