Publications (2)3.23 Total impact
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Article: A 2x2 MIMO Tri-Band Dual-Mode Direct-Conversion CMOS Transceiver for Worldwide WiMAX/WLAN Applications
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ABSTRACT: This paper describes a fully integrated 130 nm CMOS 2×2 MIMO tri-band dual-mode transceiver for fixed and mobile WiMAX and IEEE 802.11a/b/g/n applications. The proposed transceiver features reduced RF interface (only 4 RF pins) with the wideband circuit topology of the LNA and drive amplifier that minimizes the performance degradation. With carefully chosen LO frequency planning, the transceiver is capable of operating at 2.3-2.7 GHz, 3.3-3.9 GHz, and as well as 5.1-5.9 GHz bands covering whole frequency spectrum of fixed and mobile WiMAX and WLAN. The measured noise figure of the receiver is 3.6-4.2, 4.2-4.7, and 5.4-6.2 dB for each 2/3/5 GHz bands respectively. The measured PLL phase noise from 1 kHz to 10 MHz is 0.5/0.8/0.95 rms degree for 2/3/5 GHz bands respectively. The transceiver ensures low EVM over the wide dynamic range due to linear RX and TX signal paths and low integrated PLL phase noise characteristics.IEEE Journal of Solid-State Circuits 08/2011; · 3.23 Impact Factor -
Conference Proceeding: A 2×2 MIMO tri-band dual-mode CMOS transceiver for worldwide WiMAX/WLAN applications
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ABSTRACT: This paper describes a fully integrated 130nm CMOS 2×2 MIMO tri-band dual-mode transceiver for fixed and mobile WiMAX and IEEE 802.11a/b/g/n applications. The transceiver features reduced RF interface (only 4 RF pins) with the wideband circuit topology of the LNA and drive amplifier that minimizes the performance degradation. The measured receive path NF is 3.6~4.2, 4.2~4.7, and 5.4~6.2dB for the 2/3/5GHz bands respectively. The measured integrated phase noise from 1kHz to 10MHz is 0.5/0.8/0.95 rms degree for 2/3/5GHz bands respectively. The transceiver ensures low EVM over the wide dynamic range due to highly linear RX and TX signal paths, and low integrated PLL phase noise characteristics.ESSCIRC, 2010 Proceedings of the; 10/2010
