Integrated Broadband Lumped-Element Symmetrical-Hybrid N-way Power Dividers

Published

June 7, 2009

Author(s)

Mike Elsbury, Paul D. Dresselhaus, Samuel P. Benz, Zoya Popovic

Abstract

This paper presents a monolithically-integrated, broadband, lumped-element, symmetrical-hybrid power divider centered at 20 GHz which was designed and fabricated to uniformly distribute power to arrays of Josephson junctions for superconducting voltage standards. This solution achieves a ten-fold decrease in chip area, and a two-fold increase in bandwidth when compared to a standard distributed 180-degree-hybrid by utilizing LC Pi sections and a coplanar-waveguide phase inverter instead of transmission lines. A single divider demonstrates 0.5 dB maximum insertion loss, and a 1.5:1 VSWR bandwidth of 13-23 GHz. An eight-way, three-level, binary, power divider network is characterized in a divider/attenuator/combiner back-to-back measurement configuration with a 20 dB match bandwidth from 11.5-21.5 GHz. In the 15-22 GHz band of interest, the maximum insertion loss for the sixteen-way divider network is 1.0 dB, with an average of 0.5 dB.

Proceedings Title

IEEE MTT-S International Microwave Symposium Digest

Conference Dates

June 7-13, 2009

Conference Location

Boston, MA

Conference Title

International Microwave Symposium 2009

Pub Type

Conferences

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Keywords

Cryogenic electronics, Josephson arrays, lumped-element microwave circuits, microwave integrated circuits, power dividers, superconducting coils, superconducting microwave devices, superconducting integrated circuits.

Citation

Elsbury, M. , Dresselhaus, P. , Benz, S. and Popovic, Z. (2009), Integrated Broadband Lumped-Element Symmetrical-Hybrid N-way Power Dividers, IEEE MTT-S International Microwave Symposium Digest, Boston, MA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=901531 (Accessed October 11, 2025)