A 20 to 560 MHz, Reduced Harmonic Selectivity and Harmonic Fold Back, 6-path Tunable Bandpass Filter

DOI

10.2991/icecee-15.2015.159How to use a DOI?

Keywords

Switched capacitor; Bandpass filter; Software-defined radio (SDR); N-path filter; CMOS

Abstract

In this paper a 6-path tunable bandpass filter which is able to reduce both Harmonic Selectivity (HS) and Harmonic Fold Back (HFB) effect simultaneously is proposed. The filter contains two channels of 6-path switched capacitor filters with same circuit structure but different clocks and is designed and simulated in GSMC 180nm CMOS technology. The simulation result shows the center frequency of the designed filter can be tuned from 20 to 560 MHz, reduction of HS at is from -34 to -40 dB, and reduction of H6 in HFB is -21 dB at the same time. The filter can be useful in SDR systems because of its good tunability, high Q and high linearity.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jixuan Wang
AU  - Yun Pan
PY  - 2015/06
DA  - 2015/06
TI  - A 20 to 560 MHz, Reduced Harmonic Selectivity and Harmonic Fold Back, 6-path Tunable Bandpass Filter
BT  - Proceedings of the 2015 International Conference on Electrical, Computer Engineering and Electronics
PB  - Atlantis Press
SP  - 822
EP  - 828
SN  - 2352-538X
UR  - https://doi.org/10.2991/icecee-15.2015.159
DO  - 10.2991/icecee-15.2015.159
ID  - Wang2015/06
ER  -