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 OP1dB 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.
Original language | English |
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Pages (from-to) | 277-279 |
Number of pages | 3 |
Journal | Microwave and Optical Technology Letters |
Volume | 45 |
Issue number | 4 |
DOIs | |
State | Published - 20 May 2005 |
Keywords
- GaInP
- HBT
- Mixer
- Oscillator