A monolithic 5.2-GHz single-ended input and single-ended output GaInp/GaAs HBT upconversion Gilbert mixer with integrated oscillator
✍ Scribed by C. C. Meng; S. K. Hsu; G. W. Huang
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 117 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
A truly balanced operation of a 5.2‐GHz Gilbert micromixer with a single‐ended input and a single‐ended output is demonstrated using 2‐μm GaInP/GaAs HBT technology. Because the micromixer has a single‐ended input, a passive LC current combiner is used to convert the mixer‐differential output into a single‐ended output. A cross‐coupled LC oscillator with oscillation frequency of 4.3 GHz and a cascode buffer amplifier are also integrated in the same chip. The fully integrated upconversion micromixer has conversion gain of −2.5 dB and OP~1dB~ of −12.5 dBm when input IF = 0.9 GHz and thus output RF = 5.2 GHz. The IF input return loss is better than 25 dB for frequencies up to 6 GHz, while the RF output return loss is better than 12 dB for frequencies from 5.15 to 5.35 GHz. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 277–279, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20795