Title :
Beamforming by magnetostatic wave microstrip antennas
Author :
Rezvanov, A.G. ; Zagriadski, S.V.
Author_Institution :
Dept. of Radiophys., St. Petersburg State Tech. Univ., Russia
Abstract :
The paper reports a new phenomenon of space synchronism of electromagnetic waves propagating in a transmission line and magnetostatic waves excited in a ferrite layer (film). This synchronism results in the extremely narrow (less 1/spl deg/) radiation pattern of magnetostatic wave antennas and in the unidirectional propagation of wave beams at certain frequencies. Calculations were performed for microstrip antennas in the frequency band of surface magnetostatic waves. Application of the effect is suggested for tunable microwave multichannel filters and for space filtering of magnetostatic waves.
Keywords :
antenna radiation patterns; ferrite devices; magnetostatic surface waves; magnetostatic wave devices; microstrip antennas; electromagnetic wave propagation; ferrite layer; magnetostatic wave microstrip antennas; narrow radiation pattern; space synchronism; surface magnetostatic waves; transmission line; tunable microwave multichannel filters; unidirectional propagation; Antennas and propagation; Array signal processing; Electromagnetic propagation; Electromagnetic scattering; Extraterrestrial phenomena; Frequency synchronization; Magnetic separation; Magnetostatic waves; Microstrip antennas; Microwave filters;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5639-x
DOI :
10.1109/APS.1999.788376
