Design of Grooved Microstrip Band Pass Filter at 4.2 GHz

Abstract

In advanced communication systems, the filters play an important role in terms of selectivity and rejection of the unwanted signals. In microwave frequency applications the design of filter is difficult as lumped components cannot be used in this range of frequency. Microstrip filters are always chosen over the lumped filters at greater frequency for their higher performance, smaller size, lighter weight and lower cost. In this paper design of parallel grooved band-pass resonator filter has been presented at mid-band frequency 4.25 GHz, which is new concept in filter design. This filter has high attenuation in stop band, return loss of 35.16 dB and small insertion loss of 1.102 dB in the pass band.

Design of Grooved Microstrip Patch Resonator Filters for Mobile Communication

“…The filter is planar, fabricated on FR-4 substrate which makes it cost-effective. In [22] a new design of parallel grooved band-pass resonator filter is proposed at 4.25 GHz. This filter has a high attenuation in stop band, high return loss and small insertion loss in the pass band.…”

“…More efforts are being undertaken towards reducing the size of microwave components and devices, focusing especially on filters and antennas [1,2]. With the increasing demands towards miniaturization of size and for enhancing the performance of circuits, innovative techniques of making compact size microwave components and devices are used with better performance [22][23][24]. Low cost, sharp cut-off, compact size and insertion loss improvement are the main requirement for design of microstrip filters [6].…”

Comparison on Basis of Different Order Filter Circuitry in Design of Rectenna

“…Here development of prototype low filter has been considered first with normalized source impedance g0 = 1 and a cut-off frequency Ωc = 1.0, and then designed for the desired cut-off frequency with L-C elements and the required source impedance, which is 50 ohms for Microstrip filters generally. The next step consists of necessary microstrip realization that approximates the lumped element filter [3,9]. In order to demonstrate the process of designing of filter, first consider various constants necessary for the design process, which are as follows:…”

Design of a Compact Quad-Channel Microstrip Diplexer for L and S Band Applications

“…Recently, optimization algorithms [ 8 , 9 ] and neural network techniques have been used to improve performance of electronic circuits, such as in [ 10 , 11 , 12 , 13 , 14 ], which also have been used in the designing of the BPF [ 15 ] and coupler [ 16 ]. In [ 15 ], a narrow band BPF at 2.2 GHz is designed, with a hairpin structure. An artificial neural network (ANN) is used to optimized BPF, and in [ 16 ], an ANN model is used to find transfer function of the branch line coupler.…”