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:
Jul. 01, 2014
Filed:
Aug. 18, 2011
Jianhui Wu, Jiangsu, CN;
Chao Chen, Jiangsu, CN;
Hong LI, Jiangsu, CN;
Longxing Shi, Jiangsu, CN;
Zixuan Wang, Jiangsu, CN;
Jie Sun, Jiangsu, CN;
Zhiyi YE, Jiangsu, CN;
Meng Zhang, Jiangsu, CN;
Jianhui Wu, Jiangsu, CN;
Chao Chen, Jiangsu, CN;
Hong Li, Jiangsu, CN;
Longxing Shi, Jiangsu, CN;
Zixuan Wang, Jiangsu, CN;
Jie Sun, Jiangsu, CN;
Zhiyi Ye, Jiangsu, CN;
Meng Zhang, Jiangsu, CN;
Southeast University, , CN;
Abstract
A return-type current-reuse mixer having a transconductance/amplification stage, a mixing stage, and a high-pass and a low-pass filter network. The transconductance/amplification stage has a current-reuse CMOS topology wherein an input frequency signal is converted into a frequency current, low-frequency components are removed from the frequency current by the high-pass filter network, the frequency current is fed into the mixing stage, modulation occurs in the mixing stage, and then an intermediate-frequency signal is generated and output. Once high-frequency components are removed from the intermediate-frequency signal by the low-pass filter network, the intermediate-frequency signal is sent again for input into the transconductance/amplification stage, then amplified in the transconductance/amplification stage and output. The mixer transconductance/amplification stage employs a current-reuse technique. The input frequency and the output intermediate-frequency signal share a common transconductance/amplification stage. The mixer reduces power consumption, simplifies the circuit topology, and provides high conversion gain.