Performance Enhancement of Filtered Low Noise Amplifier Using Square-Shaped Complimentary Split Ring Resonator

This paper presents the enhancement of filtered low noise amplifier (FLNA) performance by incorporating square-shaped complimentary split ring resonator (SCSRR). The proposed device which is an integration of bandpass filter (BPF) and low noise amplifier (LNA) is expected able to maximize antenna signal reception for radio frequency (RF) receivers at the frequency of 2.4 GHz. An array of SCSRRs in 2x7 arrangement is loaded into BPF which is developed based on substrate integrated waveguide (SIW). While a Darlington connection of RF transistors is use to configure the LNA circuit. The characterization results of realized FLNA yield the gain of 16.278 dB at the frequency of 2.4 GHz with the −3 dB working bandwidth of 1.24 GHz ranging from the frequency of 1.88 GHz to 3.12 GHz. These achievements are comparable to the simulated one, albeit there is some discrepancies occurred.