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Mixers
Downconversion mixers in the receive path multiply the LNA-amplified RF signal by a rectangular waveform generated by the LO. Key performance parameters of mixers include Noise Figure, Input IP3, Gain, and port-to-port isolation. Mixers can be passive or active, single-balanced or double-b...




Online Tools
Receiver system calculation web tool:
This tool is targeted to demonstrate how Noise Figure (NF), Gain and Output refered IP3 is "accumulating" in a typical receiver signal processing chain consisting of filtering, amplification and mixing stages.


Online Articles
A Precise Four-Quadrant Multiplier with Subnanosecond Response paper:
The actual paper is on page 29, there is also a history of analog IC design by Stanford's Thomas Lee with pictures of classic circuits and sheep and stuff.
The MICROMIXER paper:
Improves the linearity of the orginal Gilbert mixer
SiGe MICROMIXER for multi-band WLAN paper from Natiomal Taiwan University:
Wideband mixer that works in the 2.4 and 5.7 GHz bands.
Wideband, inductor-less LNA-Mixer combo paper from University of Twente, Netherlands:
Targeted at SDR's, circuit pair is demonstrated to work between 0.5 and 7 GHz in standard 65 nm CMOS. Measurements performed on packaged samples.
Analysis of BiCMOS downconversion mixer paper from IMCS in Shanghai:
NF and IIP2 analysis of a double-balanced BiCMOS mixer.
Mixer lecture from Anyang University in Korea:
40 slides, mathematical analysis and comparison of various mixer topologies, image rejection issues, bias.
Mixer links from RFMW design:
Links to articles and tutorials
CMOS mixer using switched-capacitor filter paper from Tokyo Institute of Technology:
Direct sampling mixer for multi-band radios demonstrated in 0.18 um CMOS.
Substrate effects in mixers paper from Technical University of Denmark:
Investigates effects of substrate coupling on a Gilbert SiGe mixer fabricated in 0.35 um SiGe HBT. Substrate analyzed using Agilent's Momentum.
Simulated results of CMOS mixer for WCDMA paper from OSU:
Presents analysis and simulated results for a double-balanced 0.18-um-CMOS mixer targeting WCDMA applications.
BiCMOS mixer for 5-GHz WLAN thesis from MIT:
Linearity and noise analysis of mixers, measurements of mixers fabricated in 0.25-um SiGe
Upconversion mixer for Bluetooth thesis from Linkoping University:
Infineon research project, presents detailed simulation test benches (Cadence) and layout issues.
Up-conversion mixer paper from Universiti Sains Malaysia:
Analysis and simulation of CMOS up-conversion mixer for 1-3 GHz operation
Mixer app note and workshop from Cadence:
Join edaboards (free) and download this, which describes small and large signal test benches in Cadence and step by step instructions on setting them up.


Books
RF Microelectronics by Behzad Razavi:
Great reference for transceiver overview, one chapter on mixers and LNA's.
Planar Microwave Engineering by Thomas Lee:
Great reviews on Amazon. One chapter on diodes and another one on mixers.
Practical RF Circuit Design for Modern Wireless Systems Vol. II:
Great reviews on Amazon, including one by Guillermo Gonzalez. One chapter on mixers.