Rotor modulation of helicopter antenna characteristics

Anastasis C. Polycarpou, Constantine A. Balanis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The rotor modulation on the gain and input impedance of a 14-ft high-frequency (HF) loop antenna mounted on the tail boom of a scaled helicopter model was studied. The frequency range of interest was 2 to 12 MHz. Results confirm that rotor modulation on the gain of the antenna is significant for frequencies where the total length of the rotor blades becomes half-a-wavelength.

Original languageEnglish
Title of host publicationIEEE Antennas and Propagation Society International Symposium
Subtitle of host publicationTransmitting Waves of Progress to the Next Millennium, Held in Conjunction with: USNC/URSI National Radio Science Meeting, AP-S/URSI 2000
Number of pages4
Publication statusPublished - 2000


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