Title :
50-100 GHz octave band MMIC mixers
Author :
Kamozaki, K. ; Kurita, N. ; Tanimoto, T. ; Ohta, H. ; Nakamura, T. ; Kondoh, H.
Author_Institution :
Central Res. Lab., Hitachi Ltd., Kokubunji, Japan
Abstract :
Single-balanced MMIC mixers covering RF and LO bands of 50-100 GHz have been developed. A Marchand balun and a side-coupled balun in microstrip configurations were compared for LO drive ports of the mixers. The Marchand balun type demonstrated a conversion loss of 11.6 dB/spl plusmn/2.8 dB over a 50-103.5 GHz band, whereas the side-coupled balun type achieved a conversion loss of 11.6/spl plusmn/2.2 dB from 50 GHz to 95 GHz. These results represent the widest bandwidth reported to date in MM-wave bands.
Keywords :
HEMT integrated circuits; MMIC mixers; baluns; field effect MIMIC; losses; millimetre wave mixers; 11.6 dB; 50 to 103.5 GHz; EHF; GaAs; MIMIC; Marchand balun; PHEMT based process; microstrip configurations; octave band MMIC mixers; pseudomorphic HEMT; side-coupled balun; single-balanced MMIC mixers; Bandwidth; Costs; Dual band; Equivalent circuits; FETs; Grounding; Impedance matching; MMICs; Microstrip; Radio frequency;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 1997., IEEE
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-4063-9
DOI :
10.1109/RFIC.1997.598750
