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In this paper, performance analysis of Microstrip based RF subsystems such as impedance transformer, and low noise amplifiers (LNA) are presented in 180 nm CMOS technology employing MS (microstrip) transmission lines. The frequency of operation is 5 GHz. The impedance transformer is designed using coupled microstrip lines for better impedance matching providing return losses of −24.819dB. A modified...
This paper reports the first 24GHz 0.18-µm CMOS front-end. It down-converts an RF input at 24GHz range to an IF of 5GHz range with a power gain of 27.5dB and an overall noise figure of 7.7dB. It achieves an input return loss, S11of -21dB drawing 43mA from a 1.5V supply. The LNA achieves a voltage gain of 22dB and a noise figure of 6dB consuming 16mA of dc current. This performance is achieved through...
A two-stage stacked high IIP3 LNA with low current consumption is presented. Low-impedance bias terminations and optimum inter-stage match are used for IIP3 enhancement. A new graphical design technique is introduced for optimising the linearity trade-offs in two-stage amplifiers and for optimising the on-chip interstage matching network. Also, novel active circuits for bias modulation suppression...
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