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Designing Optimal Surface Currents for Efficient On-Chip mm-Wave Radiators With Active Circuitry

Sengupta, Kaushik and Hajimiri, Ali (2016) Designing Optimal Surface Currents for Efficient On-Chip mm-Wave Radiators With Active Circuitry. IEEE Transactions on Microwave Theory and Techniques, 64 (7). pp. 1976-1988. ISSN 0018-9480. http://resolver.caltech.edu/CaltechAUTHORS:20160825-104818056

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Abstract

Integrated antennas have become the attractive solution as the electromagnetic (EM) interface for mm-Wave and terahertz ICs. However, on-chip antennas lying at the interface between two different dielectrics (such as air and substrate) can channel most of its power into multiple nonradiative surface-wave modes, reducing efficiency drastically. In this paper, we consider the following problem: given a dielectric substrate, what is the theoretical optimal 2-D surface-current configuration that collectively suppresses surface waves and maximizes radiation efficiency with the desirable radiation pattern? This paper also discusses demonstrative examples of a circuit-EM codesign approach to realize the approximation of such current configurations. Measurement results of radiating arrays in CMOS at mm-Wave frequencies (250-300 GHz) are presented and compared with theoretical predictions.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1109/TMTT.2016.2573278DOIArticle
http://ieeexplore.ieee.org/document/7491288/?arnumber=7491288PublisherArticle
Additional Information:© 2016 IEEE. Manuscript received August 17, 2015; revised January 16, 2016 and April 28, 2016; accepted May 22, 2016. Date of publication June 14, 2016; date of current version July 7, 2016.
Subject Keywords:Beamforming, CMOS, distributed active radiation, EIRP, near field, on-chip antenna, power combining, power generation, radiation, substrate modes, terahertz (THz)
Record Number:CaltechAUTHORS:20160825-104818056
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160825-104818056
Official Citation:K. Sengupta and A. Hajimiri, "Designing Optimal Surface Currents for Efficient On-Chip mm-Wave Radiators With Active Circuitry," in IEEE Transactions on Microwave Theory and Techniques, vol. 64, no. 7, pp. 1976-1988, July 2016. doi: 10.1109/TMTT.2016.2573278 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7491288&isnumber=7506366
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69931
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:25 Aug 2016 19:30
Last Modified:25 Aug 2016 19:30

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