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An LNA with integrated Q-enhanced notch filter for use in FDD transceiver systems has been demonstrated. The amplifier core is coil less, made possible by the use of capacitive shunt-series feedback to simplify matching. Additionally, a Q-enhanced notch filter is integrated which attenuates TX blockers thus making an external interstage SAW filter redundant. A prototype was produced on a 65 nm CMOS...
A new linearity improvement technique is proposed to implement a low-distortion Gm-C band-pass filter working in high IF ranges. The purpose of the linearization technique is to eliminate Gm" value of the transconductor by employing a superposition method that combines two opposite non-linear behaviors of the two parallel wings designed inside the transconductor. Instead of conventional biquad...
This paper presents the design of a fully integrated inductorless wideband RF front-end for wireless applications including WLAN, Bluetooth and UWB. The core of the circuit is comprised of a two stage LNA, followed by a standard Gilbert cell mixer and an output buffer for measurement purposes. The chip was fabricated in 65 nm standard CMOS process. The RX offers an input matching of better than -10...
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