UM  > Faculty of Science and Technology
Gain-boosted N-path bandpass filter
Pui-In Mak; Zhicheng Lin; Rui Paulo da Silva Martins
2016-06-21
Rights HolderUniversity of Macau
Date Available2016-06-21
CountryUnited States
Subtype发明专利
Contribution Rank1
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 Gin 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 Gare narrowband at the output, reducing the folded noise during harmonic mixing

Application Date2015-06-01
Patent NumberUS9374063B1
Language英语
Application NumberUS14726881
Open (Notice) NumberUS9374063B1
Fulltext Access
Document TypePatent
CollectionFaculty of Science and Technology
INSTITUTE OF MICROELECTRONICS
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
AffiliationUniversity of Macau
First Author AffilicationUniversity 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.
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