An X-Band Low Noise Amplifier Design for Marine Navigation Radars

Abstract

In this paper, the design of a 9.1 GHz Low Noise Amplifier (LNA) of a RADAR receiver that is used in the Navy is presented. For the design of the LNA, we used GaAs Field-Effect Transistors (FETs) from Agilent ADS component library. In order to keep the cost of the circuit in low prices and the performance high, we design a two-stage LNA.

Performance Analysis of Low noise amplifier using Combline Bandpass Filter for X Band Applications

“…It is usually desirable to make the capacitances C j s in this type of filters sufficiently large that the resonator lines will be λ 0 8 ⁄ or less, long at resonance. After the normalized capacitances, C j ε ⁄ and C j,j+1 ε ⁄ , have been computed, we use the charts of Figure 3 and Figure 4 and ( 17), (18) to determine the dimensions w j and s j,j+1 of the lines for specified t and b [13]. Figure 3 can be used to determine s j,j+1 b ⁄ , then s j,j+1 is obtained.…”

“…presents a comparison of the results with those of other researchers. Our proposed amplifier presents suitable simulations results compared with other design techniques[18][19][20][21].…”