Gain-boosted N-path bandpass filter | |
Pui-In Mak![]() ![]() | |
2016-06-21 | |
Rights Holder | University of Macau |
Date Available | 2016-06-21 |
Country | United States |
Subtype | 发明专利 |
Contribution Rank | 1 |
Abstract | The present invention discloses a gain-boosted N-path SC bandpass filter (GB-BPF) with a number of sought features. It is based on a transconductance amplifier (Gm) with an N-path SC branch as its feedback network, offering 1) double RF filtering at the input and output of the Gm in one step; 2) customized passband gain and bandwidth with input-impedance match, and 3) reduced physical capacitance thanks to the loop gain offered by Gm. All have been examined using a RLC model of the SC branch before applying the linear periodically time-variant (LPTV) analysis to derive the R, L and C expressions and analytically study the harmonic selectivity, harmonic folding and noise. The latter reveals that: 1) the noise due to the switches is notched at the output, allowing smaller switches to save the LO power; and 2) the noises due to the source resistance and Gm are narrowband at the output, reducing the folded noise during harmonic mixing |
Application Date | 2015-06-01 |
Patent Number | US9374063B1 |
Language | 英語English |
Application Number | US14726881 |
Open (Notice) Number | US9374063B1 |
Fulltext Access | |
Document Type | Patent |
Collection | DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING Faculty of Science and Technology INSTITUTE OF MICROELECTRONICS |
Affiliation | University of Macau |
First Author Affilication | University of Macau |
Recommended Citation GB/T 7714 | Pui-In Mak,Zhicheng Lin,Rui Paulo da Silva Martins. Gain-boosted N-path bandpass filter. US9374063B1[P]. 2016-06-21. |
APA | Pui-In Mak,Zhicheng Lin,&Rui Paulo da Silva Martins.(2015-06-01).Gain-boosted N-path bandpass filter. |
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