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.
|Title of host publication||IEEE Antennas and Propagation Society International Symposium|
|Subtitle of host publication||Transmitting Waves of Progress to the Next Millennium, Held in Conjunction with: USNC/URSI National Radio Science Meeting, AP-S/URSI 2000|
|Number of pages||4|
|Publication status||Published - 2000|