Calibration techniques of active BiCMOS mixers

Kalle Kivekäs; Aarno Pärssinen; Jussi Ryynänen; Jarkko Jussila; Kari Halonen

doi:10.1109/JSSC.2002.1004581

Calibration techniques of active BiCMOS mixers

Kalle Kivekäs^*, Aarno Pärssinen, Jussi Ryynänen, Jarkko Jussila, Kari Halonen

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

46 Citations (Scopus)

Abstract

This paper describes calibration techniques for downconversion mixers used in integrated direct-conversion receivers. A method of achieving a high even-order intermodulation rejection is presented. Using the method presented, the receiver second-order input intercept point (IIP2) can always be improved by more than 20 dB. The minimum achieved receiver IIP2 after calibration is +38 dBm. A technique to enhance the I/Q-amplitude balance between the quadrature channels is also introduced. A single-balanced adjustable mixer is implemented as a part of a prototype direct-conversion receiver. The receiver chip consists of a low-noise amplifier, mixers and calibration circuitry, a divide-by-two circuit, local oscillator (LO) buffers for LO generation, and active baseband filters. The chip is fabricated using a 0.35-μm SiGe BiCMOS process and is characterized at 900 MHz.

Original language	English
Pages (from-to)	766-769
Number of pages	4
Journal	IEEE Journal of Solid-State Circuits
Volume	37
Issue number	6
DOIs	https://doi.org/10.1109/JSSC.2002.1004581
Publication status	Published - Jun 2002
MoE publication type	A1 Journal article-refereed

Keywords

BiCMOS analog integrated circuits
Calibration
Dc offset
Direct conversion
IIP2
Mixers
Radio receivers

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10.1109/JSSC.2002.1004581

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abstract = "This paper describes calibration techniques for downconversion mixers used in integrated direct-conversion receivers. A method of achieving a high even-order intermodulation rejection is presented. Using the method presented, the receiver second-order input intercept point (IIP2) can always be improved by more than 20 dB. The minimum achieved receiver IIP2 after calibration is +38 dBm. A technique to enhance the I/Q-amplitude balance between the quadrature channels is also introduced. A single-balanced adjustable mixer is implemented as a part of a prototype direct-conversion receiver. The receiver chip consists of a low-noise amplifier, mixers and calibration circuitry, a divide-by-two circuit, local oscillator (LO) buffers for LO generation, and active baseband filters. The chip is fabricated using a 0.35-μm SiGe BiCMOS process and is characterized at 900 MHz.",

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AU - Halonen, Kari

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Calibration techniques of active BiCMOS mixers

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Keywords

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