Narrow-Band, Band-Stop Filter Designs with Different Numbers of L-Resonators

Abstract

Filters have an important place in RF and microwave engineering. Filtering certain frequencies is one of the most basic needs in receiver and transmitter systems. Today, microstrip filters are used in many areas of microwave engineering such as radar systems, cellular communications, test/measurement systems, wireless modems, radio and television receivers, and remote control systems. In these filter structures; high performance, low loss, small size, and low-cost requirements are sought. In this study, narrow-band, band-stop filter designs with different numbers of L-resonators at a frequency of 2.45 Hz were realized. The main goal of this study is to design filters with higher performance, lower return loss, and more compact and useful sizes. Thanks to these filter designs, undesirable signals are filtered and targeted signals are transmitted appropriately.