A fully-integrated 2.4 GHz mismatch-controllable RF front-end test platform in 0.18 mu m CMOS

TitleA fully-integrated 2.4 GHz mismatch-controllable RF front-end test platform in 0.18 mu m CMOS
Publication TypeJournal Article
Year of Publication2008
AuthorsEbadi, Z. S., and R. Saleh
JournalISQED 2008: Proceedings of the NINTH International Symposium on Quality Electronic Design
Pagination411–416
Abstract

The design and implementation of a prototype testbench for a direct conversion receiver RF front-end targeted for the 2.4 GHz ISM band are described The developed front-end provides user control of I/Q mismatch and is intended as a test vehicle for evaluation of various I/Q mismatch compensation methods implemented in the back-end The I and Q path mixers can operate in normal mode, or they can be controlled externally to introduce a known mismatch, or controlled to compensate for the actual mismatch, which results in a dramatic increase in the image rejection ratio (IRR). A prototype of the proposed circuit was fabricated using TSMC 0.18 mu m CMOS technology and includes a low noise amplifier (LNA), two mixers (with quadrature down-conversion) and a quadrature voltage-controlled oscillator (QVCO). It achieves a conversion gain of 40 dB, and a noise figure of 9.8 dB. The circuit 2 dissipates 25 mW and occupies an active area of 2.5 mm(2).

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