A 1GHz signal bandwidth 4-channel-I/Q polyphase-FFT filter bank

Hundo Shin; Ramesh Harjani

doi:10.1109/ESSCIRC.2016.7598315

A 1GHz signal bandwidth 4-channel-I/Q polyphase-FFT filter bank

Hundo Shin, Ramesh Harjani

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper presents a prototype analog 4-channel-I/Q polyphase-FFT filter bank (PFFB) using passive switched capacitor circuits to channelize wideband signals. Like FFTs, the proposed PFFB shares computations for low power. The PFFB allows for a longer 'effective window length' than is possible in a standard FFT. This characteristic of the PFFB maintains a narrow main-lobe bandwidth combined with low side-lobe amplitudes. The passive switched capacitor structure enables high linearity and low power implementation. The measured performance of the prototype fabricated in TSMC 65nm CMOS shows >40dB side-lobe suppression, +25dBm IIP3, and 208μV_rms integrated output noise for all channels at 1GS/s operation. The total power consumption for the PFFB (8-channels total) is 34.6mW (34.6pJ/conv).

Original language	English (US)
Title of host publication	ESSCIRC 2016
Subtitle of host publication	42nd European Solid-State Circuits Conference
Publisher	IEEE Computer Society
Pages	355-358
Number of pages	4
ISBN (Electronic)	9781509029723
DOIs	https://doi.org/10.1109/ESSCIRC.2016.7598315
State	Published - Oct 18 2016
Event	42nd European Solid-State Circuits Conference, ESSCIRC 2016 - Lausanne, Switzerland Duration: Sep 12 2016 → Sep 15 2016

Publication series

Name	European Solid-State Circuits Conference
Volume	2016-October
ISSN (Print)	1930-8833

Other

Other	42nd European Solid-State Circuits Conference, ESSCIRC 2016
Country/Territory	Switzerland
City	Lausanne
Period	9/12/16 → 9/15/16

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10.1109/ESSCIRC.2016.7598315

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Shin, H & Harjani, R 2016, A 1GHz signal bandwidth 4-channel-I/Q polyphase-FFT filter bank. in ESSCIRC 2016: 42nd European Solid-State Circuits Conference., 7598315, European Solid-State Circuits Conference, vol. 2016-October, IEEE Computer Society, pp. 355-358, 42nd European Solid-State Circuits Conference, ESSCIRC 2016, Lausanne, Switzerland, 9/12/16. https://doi.org/10.1109/ESSCIRC.2016.7598315

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abstract = "This paper presents a prototype analog 4-channel-I/Q polyphase-FFT filter bank (PFFB) using passive switched capacitor circuits to channelize wideband signals. Like FFTs, the proposed PFFB shares computations for low power. The PFFB allows for a longer 'effective window length' than is possible in a standard FFT. This characteristic of the PFFB maintains a narrow main-lobe bandwidth combined with low side-lobe amplitudes. The passive switched capacitor structure enables high linearity and low power implementation. The measured performance of the prototype fabricated in TSMC 65nm CMOS shows >40dB side-lobe suppression, +25dBm IIP3, and 208μVrms integrated output noise for all channels at 1GS/s operation. The total power consumption for the PFFB (8-channels total) is 34.6mW (34.6pJ/conv).",

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AB - This paper presents a prototype analog 4-channel-I/Q polyphase-FFT filter bank (PFFB) using passive switched capacitor circuits to channelize wideband signals. Like FFTs, the proposed PFFB shares computations for low power. The PFFB allows for a longer 'effective window length' than is possible in a standard FFT. This characteristic of the PFFB maintains a narrow main-lobe bandwidth combined with low side-lobe amplitudes. The passive switched capacitor structure enables high linearity and low power implementation. The measured performance of the prototype fabricated in TSMC 65nm CMOS shows >40dB side-lobe suppression, +25dBm IIP3, and 208μVrms integrated output noise for all channels at 1GS/s operation. The total power consumption for the PFFB (8-channels total) is 34.6mW (34.6pJ/conv).

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A 1GHz signal bandwidth 4-channel-I/Q polyphase-FFT filter bank

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