Compact SRR-based microstrip BPF for wireless communication

Abstract

A novel compact ultra-wide band micro-strip band-pass filter has proposed in this paper for the application of wireless communication systems. By using DGS, desired UWB micro-strip BPF has designed. The designed filter has maintained lesser insertion loss, high selectivity and very good return loss. The proposed pass band filter has guaranteed the sharpness of skirts of the parameters because of appearances of transmission zero near the each pass band edges. The presences of three poles at the pass band in the designed UWB BPF could scale up the bandwidth and enhanced the selectivity. At 6 GHz centre frequencies, the 3dB fractional bandwidth is 56.07%. The simulated values of the insertion loss and return loss of the proposed filter are-0.0184dB and-43.84dB respectively. The Ansoft high frequency structural simulator has used for frequency response of the designed filter.

Implications of Metamaterial on Ultra-Wide Band Microstrip Antenna Performance

“…The high value of distributed capacitance on the gap between the two rings, which store the same amount of charges, but an opposite sign at both sides of the gap, prompts strong coupling between the two rings and lower the resonant frequency. The total capacitance of an SRR structure is the series distributed capacitance on the two rings and the two gaps capacitance [31][32][33][34][35][36]. Moreover, SRR inductance is specified according to the length of the rings and it is becoming larger when ring length increased; due to SRR capacitance and inductance, it behaves as a resonant LC circuit [34,35,37].…”

“…The total capacitance of an SRR structure is the series distributed capacitance on the two rings and the two gaps capacitance [31][32][33][34][35][36]. Moreover, SRR inductance is specified according to the length of the rings and it is becoming larger when ring length increased; due to SRR capacitance and inductance, it behaves as a resonant LC circuit [34,35,37]. Figure 8 shows how the current flow on circular and square SRR.…”

“…L T is the total inductance and C eq is the total equivalent capacitance. For detailed C-SRR and S-SRR design equations, refer to references [29,34,35]. From the equivalent circuit of the SRR, it can be noticed that the structure acts as an LC circuit with the resonant frequency specified by the total inductance and capacitance of the SRR structure [40].…”

Design of dual-mode SIR bandpass filter based on shorting pin for wireless communication applications

“…Presently, wireless communication systems like wireless code division multiple access (WCDMA), mobile communication systems (GSM, CDMA, WCDMA, TD-SCDMA), and especially IEEE standards for wireless networks such as WLANs IEEE 802.11g and IEEE 802.11b that operate at 2.4 GHz frequency; and products of IEEE 802.11a operate at 5.8 GHz frequency [1,2], the communication systems with short range such as UWB and Bluetooth, which provide suitable communication services in modernistic society. The compact equipment which support multimode wireless systems are attractive and will be openly applied in the future [3,4]. Besides simple designed realization, low pass-band insertion loss, high selectivity, the requisite requirement of band-pass filters for wireless communication systems is large stopband characteristics and a consolidated size this is substantial in new generation of wireless communication systems.…”

Development of dual-band microstrip bandpass filter based on split ring resonator

“…Hence, some breakthroughs have been attempted to realize a compact BPF by implementing SRR structure [5]- [8]. Basically, the SRR structure which is well-known as a type of metamaterials is composed of a pair of concentric enclosed-loops with splits at opposite ends.…”