Abstract
A new compact Bandpass Microstrip filter with very wide band is presented using Reconfigurable Bandpass Microstrip Filter, it is reconfigured and simulated to Reconfigured Compact Bandpass Microstrip (RCBM) Filter to minimize the size of the filter and to enhance its bandwidth (BW). The achieved BW is 1.54GHz with minimum amount of insertion loss of -0.5dB and compactness of 1/3<sup>rd</sup> size reduction in the filter compared to its original filter size. In this methodology- varying the spacing, length and width of transmission lines of this RCBM is done. Hence by the variation of its dimensions the size of the filter is reduced with enhanced BW. These filters are used in handheld communication systems- here the size of each component, size of overall system and incorporating more number of features to that system is the main goal in recent research of handheld communication and these are the most important parameters. For this purpose compact filters are required, hence the proposed work is to achieve the compactness of the Microstrip Bandpass Filter by reconfiguring the compact Bandpass micro strip filter and increasing their performance. The proposed RCBM Filter is successfully realised in theory and verified by full wave electromagnetic simulation and the experiment. The simulated and measured results are in excellent agreement.
Highlights
Microstrip filters have lot of scope and popularity due to its compact size, less cost, low weight and easy fabrication techniques
American Journal of Networks and Communications 2019; 8(2): 59-63 bandpass Microstrip filter is reconfigured into cured shape structure with reduced in size, with dimensions of width: 8.35mm and Height: 12.00mm as shown in the figure 4 below
Reconfigured Compact Bandpass Microstrip Filter illustrated in figure 5 constructed using six Microstrip coupled lines called as Lines from 1 to 6, five connectors from c1 to c5 to connect these components and two ports
Summary
Microstrip filters have lot of scope and popularity due to its compact size, less cost, low weight and easy fabrication techniques. It has found many real-time applications in low power and medium power RF transceivers. This bandpass filters have low insertion loss, compact size, wide stop band and high selectivity. These are the most important parameters for modern wireless communication systems [1-3]. Due to the rapid expansion of wireless communication, more compact amplifier, filter, oscillator and mixer circuits are being designed and placed in service at frequencies generally above 1GHz [13]
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