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Design and Simulation of an X-Band Low Noise Amplifier

Pan A

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Abstract

A design of an X-band low noise amplifier( LNA) is presented in this paper,using high performance pseudomorphic HEMT ATF36077. The network-matching in two-stage-circuit was designed in accordance with the optimal noise figure and high gain respectively. In the design process,the theory of noise measurement was introduced and commercial software ADS was used for circuit simulation and optimization. The simulation results show that the noise figure is superior to 0. 51 dB,Gain20 dB,and the P 1 dB = 12. 8 dBm in the band of 200 MHz. The size of PCB is 42 mm×30 mm,with the layout mapped reasonably and com- pactly. This LNA can be applied to RF front-end receiver of X-band marine navigation radar.

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What this paper is about

A design of an X-band low noise amplifier( LNA) is presented in this paper,using high performance pseudomorphic HEMT ATF36077. The network-matching in two-stage-circuit was designed in accordance with the optimal noise figure and high gain respectively. In the design process,the theory of noise measurement was introduced and commercial software ADS was used for circuit simulation and optimization. The simulation results show that the noise figure is superior to 0. 51 dB,Gain20 dB,and the P 1 dB = 12. 8 dBm in the band of 200 MHz. The size of PCB is 42 mm×30 mm,with the layout mapped reasonably and com- pactly. This LNA can be applied to RF front-end receiver of X-band marine navigation radar.

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Available abstract

A design of an X-band low noise amplifier( LNA) is presented in this paper,using high performance pseudomorphic HEMT ATF36077. The network-matching in two-stage-circuit was designed in accordance with the optimal noise figure and high gain respectively. In the design process,the theory of noise measurement was introduced and commercial software ADS was used for circuit simulation and optimization. The simulation results show that the noise figure is superior to 0. 51 dB,Gain20 dB,and the P 1 dB = 12. 8 dBm in the band of 200 MHz. The size of PCB is 42 mm×30 mm,with the layout mapped reasonably and com- pactly. This LNA can be applied to RF front-end receiver of X-band marine navigation radar.

Key concepts: Low-noise amplifier, Noise figure, Effective input noise temperature, Noise-figure meter, Amplifier, Radar, Noise (video), High-electron-mobility transistor

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