Abstract
This article demonstrates a high-frequency 0.35-μm SiGe HBT subharmonic downconverter with reactive in-phase and quadrature-phase (I/Q) generators. Two reactive I/Q generators are integrated in our work to provide differential quadrature RF and LO signal. The I/Q subharmonic downconverter with single-ended LO, RF, and IF (I/Q) ports has a conversion gain of 1 dB, IP1dB of -10 dBm, IIP3 of 0 dBm, and IIP2 of 21 dBm at 16.4 GHz. The magnitude and phase errors between the I and Q channels are 1.34% and 0.6°, respectively. The dc power consumption of this I/Q mixer without output buffers is approximately 5 mW.
Original language | English |
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Pages (from-to) | 1516-1520 |
Number of pages | 5 |
Journal | Microwave and Optical Technology Letters |
Volume | 52 |
Issue number | 7 |
DOIs | |
State | Published - 1 Jul 2010 |
Keywords
- Direct conversion
- I/Q
- SiGe HBT
- Subharmonic
- Transformer