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A PHEMT diode single-balanced mixer for K/K-band application

✍ Scribed by Che-Hung Lin; Hong-Zhi Liu; Chen-Kuo Chu; Hou-Kuei Huang; Chi-Chuan Liu; Ching-Hsueh Chang; Chang-Luen Wu; Chian-Sern Chang; Yeong-Her Wang

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
226 KB
Volume
49
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A single‐balanced mixer for operation in the microwave‐ and millimeter‐wave bands is presented. This monolithic microwave‐integrated circuit was implemented on AlGaAs/InGaAs/GaAs pseudomorphic high‐electron‐mobility transistor process with a chip size of 2.11 × 1.54 mm^2^. This mixer employs a planar Marchand balun and a low‐pass filter for isolating three ports corresponding to RF, LO, and IF ports. The best upconversion loss is 8 dB with an LO‐to‐RF isolation better than 30 dB. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2692–2694, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22884

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coherent Ar ϩ laser beams with identical intensity ( ϭ 488 nm, the total intensity is 400 mW/cm 2 ) incident into photorefractive crystal at 2 ϭ 20°in the sample, in which the c-axis was oriented to be in the incident plane and perpendicular to the bisector of the two beams. An incoherent He-Ne lase