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.:
Date of Patent:
Mar. 20, 2007
Filed:
Jun. 08, 2005
Sheng-fuh Chang, Hsinchu, TW;
Wen-lin Chen, Hsinchu, TW;
Hung-cheng Chen, Hsinchu, TW;
Shu-fen Tang, Hsinchu, TW;
Albert Chen, Hsinchu, TW;
Sheng-Fuh Chang, Hsinchu, TW;
Wen-Lin Chen, Hsinchu, TW;
Hung-Cheng Chen, Hsinchu, TW;
Shu-Fen Tang, Hsinchu, TW;
Albert Chen, Hsinchu, TW;
Abstract
The present invention discloses a gain amplifier, capable of concurrently operating at three different frequency bands. The gain amplifier comprises an amplification stage for amplifying a signal applied to an input of the amplifier and a triple-band resonance load connected between a DC bias voltage and a DC bias input of the amplification stage. The triple-band resonance load uses a set of reactive elements to provide match in a first frequency band, a second frequency band and in a third frequency band, such as at 2.4 GHz, 5.8 GHz and 9.0 GHz. According to the gain amplifier of the present invention, it can effectively provide triple-band signal amplification and in-band interference suppression for various multi-standard coexist communication systems.