Title :
Near-field characterization of parasitic and slotline mode coupling in a quasi-optical unit cell via electro-optic sampling
Author :
Reano, R.M. ; Whitaker, J.F. ; Katehi, L.P.B.
Author_Institution :
Radiat. Lab., Michigan Univ., Ann Arbor, MI, USA
Abstract :
The nature and degree of electromagnetic coupling in a passive quasi-optical transmission grid amplifier unit cell are investigated from an experimental point of view by employing electro-optic sampling. Parasitic coupling within a CPW-based folded slot structure is observed to peak at -14 dB. Coupling of incident-wave energy through the CPW transmission line interconnect is directly determined by the near-field measurement technique to occur via a slotline mode.
Keywords :
antenna testing; coplanar waveguides; electric field measurement; electro-optical devices; electromagnetic coupling; interconnections; magnetic field measurement; phase measurement; receiving antennas; signal sampling; slot antennas; slot lines; transmitting antennas; CPW transmission line interconnect; CPW-based folded slot structure; amplitude measurement; electro-optic sampling; electromagnetic coupling; experiment; incident-wave energy; near-field characterization; near-field measurement; parasitic mode coupling; passive transmission grid amplifier; phase measurement; quasi-optical unit cell; receive/transmit antenna separation distance; slotline mode coupling; Antenna measurements; Coplanar waveguides; Electric variables measurement; Feeds; Probes; Receiving antennas; Reflector antennas; Slot antennas; Slotline; Transmitting antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.874578
