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:
Feb. 01, 2005
Filed:
Jun. 11, 2002
Zhao-feng Zhang, Nan-Ching, TW;
David Jan-chia Chen, Taipei, TW;
Zhen-chuan Liu, Cerritos, CA (US);
Meng-hsiang Lai, Hsinchu, TW;
Zhao-Feng Zhang, Nan-Ching, TW;
David Jan-Chia Chen, Taipei, TW;
Zhen-Chuan Liu, Cerritos, CA (US);
Meng-Hsiang Lai, Hsinchu, TW;
MuChip Co., Ltd, Taipei, TW;
Abstract
A radio frequency front-end receiver includes a single stage low noise amplifier connected with a resistor array and a capacitor array, and a Gilbert-type mixer connected with a PMOS transconductance stage, an inductor and a serially connected current source. The resistor array enables the adjustment of the power gain of the low noise amplifier. The capacitor array tunes the low noise amplifier so that the maximum power gain is at the desired operating frequency. The PMOS transconductance stage reduces the power consumption of the mixer. The inductor increases the impedance and the current source improves the common-mode rejection of the mixer.