A 26–38 GHz millimeter-wave band APDP sub-harmonic mixer

✍ Scribed by Shu-Jenn Yu; Hui-Min Huang; Ching-Sung Lee; Chang-Luen Wu; Wei-Chou Hsu

• Book ID: 102517060
• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 418 KB
• Volume: 50
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.23595

✦ Synopsis

Abstract

A 26–38 GHz millimeter‐wave (MMW) band sub‐harmonic mixer has been designed using a 0.15‐μm GaAs pseudomorphic high‐electron‐mobility transistor (pHEMT) technology. The anti‐parallel diode pair (APDP) configuration as the basic unit in this sub‐harmonic mixer design to suppress the fundamental frequency signals is used. The radio‐frequency (RF) and the local oscillator (LO) signals are imported by two Lange couplers in the proposed design, with four pairs of APDPs connected in a ring structure. Superior RF/LO‐to‐IF (intermediate‐frequency) and 2LO‐to‐RF/IF isolations have been achieved. The sub‐harmonic mixer circuit has also exhibited excellent conversion loss of 13.7 dB with LO power of 13 dBm. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2135–2138, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23595