Design Of Low Noise Amplifier For Radar Application

Siti Julaiha, Haji Konang (2015) Design Of Low Noise Amplifier For Radar Application. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Wireless communication generally considered to be a branch of communications. One of the wireless technology and communication application is radar. The receiver Radio Detection And Ranging System (RADAR) generally consists of a Low noise amplifier (LNA), and down converting mixers. LNA is a very important element in Radar systems, which placed at the front end of a radio receiver circuit. The LNA main function is to provide the first signal of amplification and reduce the noise in the received signal. Without the LNA the signal that enters the system will be very week and fill with noise. This will make harder for the system to read the signal. A LNA is design for radar application. In this project, the design of a 9.1 GHz Low Noise Amplifier of radar receiver that used in the Navigation is presented. The objective of this project is to design and simulate LNA for 9.1 GHz (XBand). Transistor ATF-35143 Low Noise Pseudomorphic HEMT from Avago Technology was used to design the LNA. The ADS will be using for this project in simulation part and the LNA was design from two-port network transistor starting from scratch, input and output matching and DC biasing to design a single stage LNA. The last step in designing this project is design two-stage LNA by using cascaded twostage LNA method which is to keep the cost of the circuit in low prices and the high performance. This design were able to fulfil the design goals of noise figure 2.323 dB, gain15.816 dB.

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