Title :
A uniplanar 90-GHz Schottky-diode millimeter-wave receiver
Author :
Gauthier, Gildas P. ; Ali-Ahmad, Walid Y. ; Budka, Thomas P. ; Filipovic, Daniel F. ; Rebeiz, Gabriel M.
Author_Institution :
NASA Center for Space Terahertz Technol., Michigan Univ., Ann Arbor, MI, USA
fDate :
7/1/1995 12:00:00 AM
Abstract :
A 90 GHz Schottky-diode receiver based on a double slot antenna fed by a coplanar-waveguide (CPW) transmission line is presented. The double slot antenna is placed on an extended hemispherical high-resistivity silicon substrate lens. The uniplanar receiver results in a 9.3±0.3 dB measured SSB conversion loss at 88-90 GHz including antenna and IF circuit losses and a 1-dB loss due to the use of a nonoptimal matching cap layer at the silicon lens-air interface. The calculated conversion loss agrees very well with the RF measurements. The uniplanar double-slot antenna receiver is very small, less than 1.1×4 mm including the RF/IF filter, and is compatible with monolithic two- and three-terminal devices on GaAs substrates. The application areas are in millimeter-wave receivers for automotive systems, communication systems, and radiometric linear imaging arrays
Keywords :
Schottky diodes; antenna radiation patterns; coplanar waveguides; losses; millimetre wave antennas; millimetre wave imaging; millimetre wave integrated circuits; millimetre wave receivers; slot antennas; 1 dB; 88 to 90 GHz; 9.3 dB; CPW transmission line feed; EHF; GaAs; GaAs substrates; MM-wave receiver; Schottky-diode receiver; Si; automotive systems; communication systems; conversion loss; coplanar waveguide; double slot antenna; extended hemispherical substrate lens; high-resistivity Si substrate lens; millimeter-wave receiver; nonoptimal matching cap layer; radiometric linear imaging arrays; uniplanar receiver; Antenna measurements; Coplanar waveguides; Loss measurement; Millimeter wave communication; Millimeter wave measurements; Radio frequency; Receiving antennas; Silicon; Slot antennas; Transmission line antennas;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
