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A 2G/3G/4G SAW-Less Receiver Front-End Adopting Switchable Front-End Architecture.
- Source :
-
IEEE Transactions on Microwave Theory & Techniques . Aug2014, Vol. 62 Issue 8, p1716-1723. 8p. - Publication Year :
- 2014
-
Abstract
- <?Pub Dtl?>In this paper, a surface acoustic wave (SAW)-less receiver (RX) front-end adopting switchable front-end architecture has been presented for second-generation/third-generation/fourth-generation cellular applications. Depending on the RX–transmitter (TX) frequency separation, a favorable down-mixing architecture is selected between a current-sampling mixer and a voltage-sampling mixer. The proposed switchable architecture meets the specification of an input-referred second-order intercept point (IIP2) for the SAW-less RX while minimizing the power consumption. The implemented RX front-end consists of a wideband capacitor cross-coupled common-gate low-noise amplifier, a 25% duty-cycle passive mixer with IIP2 calibration circuitry, a baseband transconductor, and a trans-impedance amplifier. Fabricated in a 65-nm CMOS process, the SAW-less RX front-end provides conversion gain of 42 dB, and achieves noise figure of below 3.3 dB, out-of-band input-referred third-order intercept point of -\2 dBm, and IIP2 of more than 56 dBm. It draws an average current of 14.8 mA from 1.2 V. The die area is 1.71 mm^2. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00189480
- Volume :
- 62
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Microwave Theory & Techniques
- Publication Type :
- Academic Journal
- Accession number :
- 97379661
- Full Text :
- https://doi.org/10.1109/TMTT.2014.2326616