Title :
44.5 GHz MMIC direct I&Q modulator in coplanar waveguide technology for an EHF Satcom terminal phased array
Author :
Hettak, K. ; Beland, P. ; Verver, C.J. ; Stubbs, M.G. ; Morin, G.A.
Author_Institution :
Commun. Res. Centre, Ottawa, Ont., Canada
Abstract :
A MMIC (monolithic microwave integrated circuit) 44.5-GHz direct I&Q modulator has been developed for implementation in a low-cost EHF SATCOM terminal phased array. In this paper, the performance of the MMIC modulator is reported and the integration aspects are discussed. The K-band even-harmonic quadrature modulator conversion loss was measured to be less than 10 dB, sideband suppression better than 28 dB, carrier (2f/sub LO/) suppression around 15 dB, and IM3 (2f/sub LO/-3f/sub IF/) suppression better than 38 dB over the 43.5 to 45.5 GHz frequency band of interest.
Keywords :
MMIC; coplanar waveguide components; modulators; satellite communication; 10 dB; 44.5 GHz; EHF Satcom terminal phased array; IM3 suppression; K-band even-harmonic quadrature modulator; MMIC direct I&Q modulator; carrier suppression; conversion loss; coplanar waveguide technology; sideband suppression; Coplanar waveguides; Frequency measurement; Integrated circuit technology; K-band; MMICs; Microwave antenna arrays; Microwave integrated circuits; Monolithic integrated circuits; Phase modulation; Phased arrays;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1212612
