Title :
Measured and simulated electric, magnetic, and thermal field distributions of a patch antenna operating at high power
Author :
Reano, Ronald M. ; Thiel, Werner ; Whitaker, John F. ; Katehi, Linda P B
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
Electric, magnetic, and thermal field distributions in the near field of a microstrip patch antenna operating at high RF power are experimentally determined. Electro-optic sampling is used to obtain the electric field distribution, magneto-optic sampling provides the magnetic field distribution, and semiconductor bandgap thermometry is used to obtain the thermal field. Measurements are compared with simulations and are found to be in good agreement. From the measurements, it is concluded that dielectric loss, in the substrate of the structure, is the dominant loss mechanism in the antenna.
Keywords :
antenna testing; dielectric losses; electric fields; infrared imaging; magnetic fields; microstrip antennas; temperature distribution; 10.403 GHz; dielectric loss; electric field distributions; electro-optic sampling; high RF power antenna; magnetic field distributions; magneto-optic sampling; near field; patch antenna; semiconductor bandgap thermometry; substrate; thermal field distributions; Antenna measurements; Dielectric loss measurement; Dielectric measurements; Dielectric substrates; Electric variables measurement; Magnetic field measurement; Magnetic semiconductors; Patch antennas; Power measurement; Sampling methods;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2002. IEEE
Print_ISBN :
0-7803-7330-8
DOI :
10.1109/APS.2002.1016787
