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This paper presents a wideband, direct-conversion radio receiver front-end that targets all WiMAX/WLAN bands from 2.3-GHz to 5.8-GHz. The receiver front-end is fabricated in 0.18-μm CMOS and achieves a gain of 25 dB, noise figure of 6 dB, and IIP3 of -6 dBm while dissipating 28 mW from a 1.8-V power supply. This performance is achieved while using only two integrated inductors.
The IIP2 requirement in fully integrated direct-conversion receivers using FDD duplexing is prohibitively high and demands the use of an external filter in order to attenuate the leakage from the transmitter. This paper presents a digital calibration technique for passive CMOS down-converters that allows a direct conversion receiver achieve the requirements without external filtering. A Least-Mean-Square...
In this paper a low-power design of an integrated RF receiver for Wireless Sensor Networks (WSNs) in 90 nm CMOS technology is proposed. The receiver is IEEE 802.15.4 physical specifications compliant. It is designed to operate in ISM band at 2.45 GHz center frequency. Target devices for this kind of transceiver are low-cost battery powered smart embedded devices and sensors. The receiver is designed...
This paper presents the design challenges and solutions for 4 G nanometer radio receivers for mobile devices. The specifications for the ZERO-IF/LOW-IF 4 G receiver architecture are derived. Limitations due to the use of low-voltage nanometer technologies are described and novel circuit technique mobile systems, such as wideband noise reduction, inductor-less peaking, passive mixing, and low flicker...
RFIC design using low-voltage nanometer CMOS technologies offers both advantages and challenges. This paper describes the limitations of using these technologies in receiver front-end design and proposes circuit solutions. Several techniques such as wideband noise reduction, inductoreless peaking, passive mixing, and low flicker noise amplification are reviewed and employed. A receiver front-end that...
This paper presents a system level design of radio frequency receiver supporting WiMAX mobile standard. Based on direct conversion receiver, the distribution of the total radio system specifications to the individual receiver components is discussed. System level design techniques and theoretical calculation are developed. Simulation results and system simulation level are introduced for noise figure...
This paper presents a direct conversion RF receiver front-end supporting the WiMAX standard. The front-end is implemented in 0.18um CMOS technology and designed using the ARCHER software. It shows how the design flow can be accelerated starting from the standard specifications and going down to schematics. All this is accompanied by test benches to extract the relevant metrics. This front-end provides...
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