Title :
A circuit-fed tile-approach configuration for millimeter-wave spatial power combining
Author :
Gouker, Mark A. ; Delisle, John T. ; Duffy, Sean M.
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
fDate :
1/1/2002 12:00:00 AM
Abstract :
In this paper, a circuit-fed spatially combined transmitter array is described for operation at 44 GHz. The array contains 256 elements where each element consists of a monolithic-microwave integrated-circuit amplifier and a circularly polarized microstrip patch antenna. The array is constructed using 16-element tile-approach subarrays. Each subarray is a two RF-level (three-dimensional) multichip module containing integrated microstrip patch antennas. The basic construction of the transmitter array resembles tile-approach phased arrays; however, the implementation has been tailored for the power-combining application. The peak performance at 43.5 GHz is equivalent isotropic radiated power of 40.6 dBW (11570 W), effective transmitted power (Peff) of 5.9 W, dc-to-RF efficiency of 7.3%, and system gain of 35 dB
Keywords :
MIMIC; MMIC amplifiers; active antenna arrays; antenna feeds; antenna radiation patterns; microstrip antenna arrays; millimetre wave amplifiers; millimetre wave antenna arrays; power combiners; transmitting antennas; 35 dB; 44 GHz; 5.9 W; MM-wave spatial power combining; MMIC amplifier; active antenna arrays; circuit-fed tile-approach configuration; circularly polarized microstrip patch antenna; equivalent isotropic radiated power; far-field radiation patterns; integrated antennas; spatially combined transmitter array; tile-approach subarrays; two RF-level multichip module; Microstrip antenna arrays; Millimeter wave circuits; Millimeter wave technology; Millimeter wave transistors; Patch antennas; Phased arrays; Power amplifiers; Power generation; Solid state circuits; Transmitters;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
