Premium
Design of double‐balanced MMIC mixer for Ka‐band satellite communications
Author(s) -
Ryu KeunKwan,
Jang DongPhil,
Lee MoonQue,
Yom InBok,
Lee SeongPal
Publication year - 2002
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10475
Subject(s) - monolithic microwave integrated circuit , high electron mobility transistor , microwave , electrical engineering , frequency mixer , schottky diode , engineering , chip , communications satellite , ka band , optoelectronics , materials science , diode , radio frequency , satellite , telecommunications , transistor , amplifier , cmos , voltage , aerospace engineering
A MMIC (monolithic microwave integrated circuit) mixer chip using the Schottky diode of an InGaAs/GaAs p‐HEMT process has been developed to act as the receiver down converter of a Ka‐band satellite transponder. A different approach to the MMIC mixer structure is applied for reducing the chip size by the exchange of ports between IF and LO. This MMIC covers with RF (30.6–31.0 GHz) and IF (20.8–21.2 GHz). According to the on‐wafer measurement, the miniature (3.0 × 1.5 mm) MMIC mixer demonstrates conversion loss below 7.8 dB, LO‐to‐RF isolation above 27 dB, LO‐to‐IF isolation above 19 dB, and RF‐to‐IF isolation above 40 dB, respectively. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 34: 401–403, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10475