Title :
A 25 GHz down-converter integrated with a CPW-fed lens antenna
Author :
Yamada, A. ; Matsui, T.
Author_Institution :
Commun. Res. Lab., Minist. of Posts & Telecommun., Tokyo, Japan
Abstract :
A novel 25 GHz down-converter integrated with a CPW-fed lens antenna in the same package has been developed. This converter consists of an alumina substrate, a quartz lens, and a package. The substrate has a multi-slot antenna, a 3-stage LNA, a subharmonically pumped mixer, and filters. Although the size and distance of the lens are not large enough to satisfy the condition of geometrical optics approximation, the lens is effective in increasing the antenna gain. An antenna gain of 16.2 dBi for the 40 mm/spl phi/-lens is achieved.
Keywords :
Antenna feeds; Coplanar waveguides; Geometrical optics; Lens antennas; Millimetre wave antennas; Millimetre wave frequency convertors; Slot antennas; 25 GHz; 40 mm; CPW-fed lens antenna; antenna gain; down-converter; geometrical optics approximation; multi-slot antenna; quartz lens; subharmonically pumped mixer; three-stage LNA; Circuits; Coplanar waveguides; Dielectric substrates; Filters; Geometrical optics; Lenses; Millimeter wave communication; Millimeter wave technology; Packaging; Radio frequency;
Conference_Titel :
Microwave Symposium Digest. 2000 IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-5687-X
DOI :
10.1109/MWSYM.2000.862303
