CST – Computer Simulation Technology

Title:
A Broadband 3–29GHz Reflectometer with a Frequency Compensated Multilayer Sixport Structure
Author(s):
F. Trenz, M. Hofmann*, R. Weigel, D. Kissinger
Source:
IEEE
Vol./Issue/Date:
1st January 0001
Year:
2016
Page(s):
pp 323 - 326
Keywords:
Reflectometry, Microwave circuits, sixport, broad-band
Abstract:
n this paper, a planar broadband sixport reflectometer structure is presented. A frequency range from 3 to 29 GHz could be achieved by merging broadband components into a single multilayer PCB stackup with an area of 66x55 mm2. The reflectometer architecture used herein allows a frequency independent q-point configuration of the sixport by implementing microstrip linelength compensation. Broadband matching of around -10 dB has been achieved at all ports in a frequency range from 1 to 30 GHz. Furthermore, sufficient coupling from DUT port to measurement output could be reached in a range from 2 to 29 GHz. Frequency compensation of the structure and an optimal q-point constellation of 120-120-120 have been verified by measurement. Due to its broadband functionality, compactness and cost efficiency, the proposed system is suitable for a wide range of microwave measurement applications.
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