Compact Ka-Band One-Port Vector Reflectometer using a Wideband Electronically Controlled Phase Shifter

Abstract

In this paper, the design and implementation of a compact one-port Ka-band (26.5-40 GHz) vector reflectometer or network analyzer (VNA), operating in full Ka-band frequency range, are presented. The design follows that of a recently developed VNA but with the goal of producing a wideband version. The most critical component of this design is a wideband electronically controlled phase shifter, designed using nonuniformly spaced p-i-n diode-loaded slots incorporated in the broad wall of a rectangular waveguide. Nonuniform placement of the slots is shown to significantly reduce unwanted resonances within the operating bandwidth. Also, the new design provides the possibility of using a more accurate three-port S -parameter characterization instead of the previously used two-port approach. The design foundation and measurement results are presented.

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Microwave Measurements; Millimeter-Wave Imaging; Millimeter-Wave Measurements; Phase Shifters; Reflectometry; Critical Component; Frequency Ranges; Ka Band; Measurement Results; Millimeter Wave Measurements; New Design; Operating Bandwidth; Parameter Characterization; Wide-Band; Electric Network Analyzers

International Standard Serial Number (ISSN)

0018-9456

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Jun 2012

Link to Full Text

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