Title :
Integrated Q-band MMIC diffraction grating transmitter
Author :
Lehmann, R.E. ; Nai-Hsiang Sun ; Butler, J.K.
Author_Institution :
Texas Instrum. Inc., Dallas, TX, USA
Abstract :
An integrated MMIC diffraction grating antenna has been developed which provides an electronic beam scanning capability at mm-wave frequencies. The grating antenna has been designed to operate near the second Bragg diffraction condition using a corrugated ceramic structure. To provide frequency scan capability, a GaAs varactor-controlled oscillator/buffer amplifier MMIC is employed as a source. As the frequency changes, the beam scans. A planar launch to the dielectric corrugated antenna has been developed to provide a low-cost, easy to manufacture interface from the mm-wave monolithic integrated circuit. The measured 3 dB beamwidth from a 10-period grating at 39 GHz is 5 degrees. Angular scan capability is 15 degrees/GHz.
Keywords :
III-V semiconductors; MIMIC; active antenna arrays; antenna accessories; antenna phased arrays; diffraction gratings; gallium arsenide; leaky wave antennas; millimetre wave antenna arrays; scanning antennas; transmitting antennas; 10-period grating; 3 dB beamwidth; 39 GHz; GaAs; GaAs varactor-controlled oscillator/buffer amplifier MMIC; angular scan capability; corrugated ceramic structure; dielectric corrugated antenna; electronic beam scanning capability; frequency scan capability; grating antenna; integrated MMIC diffraction grating antenna; integrated Q-band MMIC diffraction grating transmitter; interface; mm-wave frequencies; mm-wave monolithic integrated circuit; planar launch; second Bragg diffraction condition; Bragg gratings; Ceramics; Dielectrics; Diffraction gratings; Frequency; Gallium arsenide; Integrated circuit manufacture; MMICs; Oscillators; Transmitters;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1996. AP-S. Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-3216-4
DOI :
10.1109/APS.1996.550044
