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This paper presents a low-power low-IF RF frontend for 2.4GHz wireless sensor networks (WSN) in 0.18μm RF CMOS technology. The RF frontend consists of a variable gain low noise amplifier (VG-LNA), a quadrature passive mixer and a divide-by-two circuit which generates the differential quadrature LO signals for quadrature balanced mixer. The effect of the input parasitic capacitance on the inductively...
In this paper, a radio frequency (RF) CMOS low noise amplifier (LNA) for WiMAX applications is presented. In this amplifier, it is used a high-Q active inductor with band selector and a differential output configure to operate at three different frequency bands and obtain low noise figure (NF), high enough power gain, and low power consumption. Using TSMC 0.18 mum process, the proposed amplifier can...
This paper presents the design, optimization and methods for test a high frequency high gain low-noise amplifier (LNA), using a UMC RF 0.18 mum CMOS process. The LNA was designed to be part of a low-power/low-voltage RF CMOS transceiver, for operation in the 2.4 GHz ISM band. The LNA has a power consumption of 3.6 mW, for a power supply of only 1.8 V. The LNA has a control signal that makes it to...
A 5-GHz CMOS voltage-controlled oscillator (VCO) integrated with a micromachined switchable differential inductor is reported in a 0.18 mum radio frequency-CMOS-based microelectromechanical system technology. The power consumption of the core is about 8 mW at the supply voltage of 1.8 V. A total tuning range of 470 MHz (from 5.13 GHz to 5.60 GHz) is achieved as the tuning voltage ranging from 0 V...
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