Title :
A PHEMT based monolithic plane wave amplifier for 42 GHz
Author :
Sovero, E.A. ; Kwon, Y. ; Deakin, D.S. ; Sailer, A.L. ; Higgins, J.A.
Author_Institution :
Rockwell Inst. Sci. Center, Thousand Oaks, CA, USA
Abstract :
We report the design and operation of a monolithic plane wave PHEMT amplifier operating at millimeter wave frequencies. The array is made up of input slot antennas (5/spl times/7 array) and output patch antennas (4/spl times/8 array) polarized in orthogonal directions. An array of PHEMT amplifiers (7/spl times/8) placed between the two antennas amplifies and reradiates the input signal. The amplifier was placed in an oversized waveguide in order to avoid diffraction losses of a free space system. Gain of the amplifier was 3 dB at 42 GHz without any corrections for internal fixture losses. The amplifier results correlate well with computer model predictions of the antenna structures. These results prove the feasibility as well as the manufacturability of this approach.
Keywords :
HEMT integrated circuits; field effect MIMIC; microstrip antenna arrays; millimetre wave amplifiers; millimetre wave devices; slot antenna arrays; 3 dB; 42 GHz; PHEMT; computer model predictions; input slot antennas; internal fixture losses; millimeter wave frequencies; monolithic plane wave amplifier; orthogonal direction polarization; output patch antennas; oversized waveguide; Antenna arrays; Diffraction; Directive antennas; Fixtures; Frequency; Operational amplifiers; PHEMTs; Patch antennas; Polarization; Slot antennas;
Conference_Titel :
Microwave Symposium Digest, 1996., IEEE MTT-S International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-3246-6
DOI :
10.1109/MWSYM.1996.511224
