An 8GHz multi-beam spatio-spectral beamforming receiver using an all-passive discrete time analog baseband in 65nm CMOS

Satwik Patnaik; Sachin Kalia; Bodhisatwa Sadhu; Martin Sturm; Mohammad Elbadry; Ramesh Harjani

doi:10.1109/CICC.2012.6330615

An 8GHz multi-beam spatio-spectral beamforming receiver using an all-passive discrete time analog baseband in 65nm CMOS

Satwik Patnaik, Sachin Kalia, Bodhisatwa Sadhu, Martin Sturm, Mohammad Elbadry, Ramesh Harjani

Electrical and Computer Engineering

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

4 Scopus citations

Abstract

A novel multi-frequency beamforming front-end is proposed. The proposed front-end allows for simultaneous and independent steering of multiple frequency beams. As proof of concept, an 8GHz 2-channel, 4-frequency phased array beam-former is designed and implemented in 65nm CMOS. The IF signal on each channel is frequency split using an all passive 4-point analog FFT. The orthogonal frequency outputs are then beam steered using an all passive I-Q vector combiner. The RF circuit draws 22.8mA from a 1.2V supply while the analog baseband consumes 9pJ/conv. (135μW at 120MSps).

Original language	English (US)
Title of host publication	Proceedings of the IEEE 2012 Custom Integrated Circuits Conference, CICC 2012
DOIs	https://doi.org/10.1109/CICC.2012.6330615
State	Published - Nov 26 2012
Event	34th Annual Custom Integrated Circuits Conference, CICC 2012 - San Jose, CA, United States Duration: Sep 9 2012 → Sep 12 2012

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Other	34th Annual Custom Integrated Circuits Conference, CICC 2012
Country/Territory	United States
City	San Jose, CA
Period	9/9/12 → 9/12/12

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10.1109/CICC.2012.6330615

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Patnaik, S, Kalia, S, Sadhu, B, Sturm, M, Elbadry, M & Harjani, R 2012, An 8GHz multi-beam spatio-spectral beamforming receiver using an all-passive discrete time analog baseband in 65nm CMOS. in Proceedings of the IEEE 2012 Custom Integrated Circuits Conference, CICC 2012., 6330615, 34th Annual Custom Integrated Circuits Conference, CICC 2012, San Jose, CA, United States, 9/9/12. https://doi.org/10.1109/CICC.2012.6330615

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abstract = "A novel multi-frequency beamforming front-end is proposed. The proposed front-end allows for simultaneous and independent steering of multiple frequency beams. As proof of concept, an 8GHz 2-channel, 4-frequency phased array beam-former is designed and implemented in 65nm CMOS. The IF signal on each channel is frequency split using an all passive 4-point analog FFT. The orthogonal frequency outputs are then beam steered using an all passive I-Q vector combiner. The RF circuit draws 22.8mA from a 1.2V supply while the analog baseband consumes 9pJ/conv. (135μW at 120MSps).",

author = "Satwik Patnaik and Sachin Kalia and Bodhisatwa Sadhu and Martin Sturm and Mohammad Elbadry and Ramesh Harjani",

year = "2012",

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doi = "10.1109/CICC.2012.6330615",

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AU - Elbadry, Mohammad

AU - Harjani, Ramesh

PY - 2012/11/26

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N2 - A novel multi-frequency beamforming front-end is proposed. The proposed front-end allows for simultaneous and independent steering of multiple frequency beams. As proof of concept, an 8GHz 2-channel, 4-frequency phased array beam-former is designed and implemented in 65nm CMOS. The IF signal on each channel is frequency split using an all passive 4-point analog FFT. The orthogonal frequency outputs are then beam steered using an all passive I-Q vector combiner. The RF circuit draws 22.8mA from a 1.2V supply while the analog baseband consumes 9pJ/conv. (135μW at 120MSps).

AB - A novel multi-frequency beamforming front-end is proposed. The proposed front-end allows for simultaneous and independent steering of multiple frequency beams. As proof of concept, an 8GHz 2-channel, 4-frequency phased array beam-former is designed and implemented in 65nm CMOS. The IF signal on each channel is frequency split using an all passive 4-point analog FFT. The orthogonal frequency outputs are then beam steered using an all passive I-Q vector combiner. The RF circuit draws 22.8mA from a 1.2V supply while the analog baseband consumes 9pJ/conv. (135μW at 120MSps).

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An 8GHz multi-beam spatio-spectral beamforming receiver using an all-passive discrete time analog baseband in 65nm CMOS

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