By Topic

An improved adaptive high power vector network analyser for HF antenna tests

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $33
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
P. Eskelinen ; Helsinki Univ. of Technol., Finland ; A. Eskellinen

Meaningful impedance measurements of short HF antennas can be performed with a set-up consisting of an automatically sensing high power generator, combined integral reflection meter, tuneable preselection filter and a remote field probe. These are combined as a customised vector network analyser. The idea is to avoid measuring equipment destruction by using an automatic adjustment of test port power. Severe external interference that is typical of HF transmitter sites necessitates the use of band-reject or band pass filters before the detection of reflected voltages. Proper HF antenna tuning should be based on simultaneous information about true radiation efficiency. A small UHF link provides the telemetry path from the suggested HF field probe to the network analyser's through port.

Published in:

HF Radio Systems and Techniques, 2003. Ninth International Conference on (Conf. Publ. No. 493)

Date of Conference:

23-26 June 2003