Title:
SEMICONDUCTOR INTEGRATED CIRCUIT AND TUNER SYSTEM PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2012/014343
Kind Code:
A1
Abstract:
Disclosed is an RF signal processing circuit implemented in the form of an integrated circuit, with which a good distortion characteristic is realised even in the case of low voltage operation. A semiconductor integrated circuit comprises: an attenuator (10) that attenuates an input signal by a variable attenuation amount; a source follower (20) that receives the output of the attenuator (10); and amplification means (30) that performs filtering processing on the output of the source follower (20) and then amplifies said output by a variable gain.
Inventors:
NASU, Takafumi (())
那須貴文 (())
HAYASHI, George (())
那須貴文 (())
HAYASHI, George (())
Application Number:
JP2011/000055
Publication Date:
February 02, 2012
Filing Date:
January 07, 2011
Export Citation:
Assignee:
PANASONIC CORPORATION (1006, Oaza Kadoma Kadoma-sh, Osaka 01, 〒5718501, JP)
パナソニック株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 〒5718501, JP)
NASU, Takafumi (())
那須貴文 (())
パナソニック株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 〒5718501, JP)
NASU, Takafumi (())
那須貴文 (())
International Classes:
H04B1/18; H03F1/26; H03F3/195; H03G3/20; H04B1/10; H04B1/16; H04N5/44
Attorney, Agent or Firm:
MAEDA, Hiroshi et al. (Osaka-Marubeni Bldg, 5-7 Hommachi 2-chome, Chuo-ku, Osaka-sh, Osaka 53, 〒5410053, JP)
Claims: