Title :
Monolithic millimeter-wave IMPATT oscillator and active antenna
Author :
Camilleri, Natalino ; Bayraktaroglu, Burhan
Abstract :
A single-chip millimeter-wave transmitter module in which GaAs IMPATT diodes are monolithically integrated with a microstrip resonator and a loop antenna is discussed. Devices operating at 43.3 GHz produce 27-mW CW output power with 7.2% conversion efficiency. Radiation patterns of linear arrays of such radiating elements were determined as a function of interelement spacing and number of elements. The oscillator chip was also directly coupled to and power combined in waveguides, producing an inexpensive millimeter-wave source.<>
Keywords :
IMPATT diodes; MMIC; active antennas; antenna radiation patterns; loop antennas; microstrip antennas; microwave antenna arrays; microwave oscillators; resonators; strip line components; transmitters; 27 mW; 43.3 GHz; 7.2 percent; CW output power; EMF; GaAs; III-V semiconductors; IMPATT oscillator; MM-wave circuit; MMIC; active antenna; conversion efficiency; interelement spacing; linear arrays; loop antenna; microstrip resonator; millimeter-wave source; oscillator chip; power combining; radiating elements; radiation patterns; single-chip transmitter module; waveguides; Antenna radiation patterns; Diodes; Gallium arsenide; Linear antenna arrays; Microstrip antennas; Microstrip resonators; Oscillators; Power generation; Transmitters; Transmitting antennas;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
