Design of Ring-circle Micro Strip Band Pass Filter with Wide Stop-Band Characteristics for WLAN Application

Design, optimization and realization of compact bandpass filter using two identical square open-loop resonators for wireless communications systems

“…The main objective of this work is to improve the performance of the bandpass filter in terms of bandwidth, adaptation and resonant frequency while miniaturizing its size. The proposed filter has a very high selectivity throughout the bandwidth about 290 MHz, the small size of (9.4 × 23.1) mm 2 and small insertion loss of about -0.23 dB compared to other bandpass filters published in [20][21][22][23][24].…”

“…Figure10represents the fabricated prototype of bandpass filter based on two identical square openloop resonators. The total area of this bandpass filter is only (9.4 × 23.1) mm 2 which is more compact as compared to previous designs[20][21][22][23][24]. The reflection coefficient (S 11 ) and transmission coefficient (S 21 ) of the proposed filter have been measured using Anritsu MS2037C vector network analyzer.Figure11shows a comparison between the measured and simulated S 11 parameters of the proposed filter.…”

Novel Microstrip Band Pass Filter for C- Band Wireless Applications

“…The development and progress has attracted more interest in the researchers. The challenge in this design of filters is mainly lies with the size and design modeling which influences the electrical behavior of the entire communication system [4,5]. Several techniques are being proposed in order to analyze the electrical performance parameters of the micro strip filters [6].…”