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A 2-6 GHz WiMAX low noise amplifier (LNA) is designed and implemented in 0.18-??m CMOS process. This low noise amplifier utilizes a current-reused technique, and a high-pass input matching network. The LNA presents a maximum power gain of 18.4 dB at 2 GHz. The minimum noise figure (NF) is 2.1dB. S11 is less than -16 dB. The total power consumption is 17.4 mW under a 1.8 V power supply. The chip size...
In this paper, we present a new wideband low noise amplifier which operate in UHF band for spectral sensing in the receiver of cognitive radios. The circuit employs the noise-canceling technique, and can achieve the higher gain and lower power dissipation. The method of shunt-resistive feedback is adopted for achieving a broad bandwidth. The LNA is designed by the CMOS 0.18 um RF technology. Simulated...
In this paper, a direct up-conversion mixer with wide intermediate frequency (IF) bandwidth is designed and fabricated for 60-GHz applications. The up-converted differential signal is transformed to single-ended signal through an on-chip balun. In addition, an injection-locked frequency tripler is integrated for local oscillator signal generation. The measured results shows the maximum conversion...
This paper deals with the problem of realizing wideband receiver front-ends in downscaled CMOS technologies, which are highly wanted for multi-standard radio receivers and cognitive radio applications. Instead of using many narrowband inductor based receivers, we prefer the use of one wideband receiver with sufficient bandwidth to cover all popular frequency bands up to 6 GHz or even 10 GHz. To relax...
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