60 GHz antenna measurement setup using a VNA without external frequency conversion

Paula Irina Popa, Sergey Pivnenko, Jeppe Majlund Nielsen, Olav Breinbjerg

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Abstract

The typical antenna measurement system setup working above 20 GHz makes use of frequency multipliers and harmonic mixers, usually working in standard waveguide bands, and thus several parts need to be procured and interchanged to cover several frequency bands. In this paper, we investigate an alternative solution which makes use of a standard wideband VNA without external frequency conversion units. The operational capability of the Planar Near-Field (PNF) Antenna Measurement Facility at the Technical University of Denmark was recently extended to 60 GHz employing an Agilent E8361A VNA (up to 67 GHz). The upgrade involved procurement of very few additional components: two cables operational up to 65 GHz and an openended waveguide probe for tests in U-band (40-60 GHz). The first tests have shown good performance of the PNF setup: 50-60 dB dynamic range and small thermal drift in magnitude and phase, 0.06 dB and 6 degrees peak-to-peak deviations over 4 hours. A PNF measurement of a 25 dBi Standard Gain Horn was carried out and the results were compared to those from the DTU-ESA Spherical Near-Field Facility with a good agreement in the validity region. Uncertainty investigations regarding cable flexing effects at 60 GHz have shown that these introduce an uncertainty of about 0.02 dB (1 sigma) around the main beam region indicating a very good performance of the PNF setup.
Original languageEnglish
Title of host publicationProceedings of the 36th Annual Symposium of the Antenna Measurement Techniques Association (AMTA)
Number of pages6
PublisherIEEE
Publication date2014
Publication statusPublished - 2014
EventAMTA 36th Annual Meeting & Symposium - Tucson, United States
Duration: 12 Oct 201427 Oct 2014
Conference number: 36
http://amta2014.org/

Conference

ConferenceAMTA 36th Annual Meeting & Symposium
Number36
CountryUnited States
CityTucson
Period12/10/201427/10/2014
Internet address

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