Design Of Step Impedance Hairpin Resonator

Mohd Hafizan , Che Halim (2007) Design Of Step Impedance Hairpin Resonator. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This project presents the design of a six order microstrip hairpin resonator filter. The hairpin filter is one of the most popular microwave frequency filters because of it is compact and does not require grounding The design is based on the edge parallel coupled regarding to the Chebyshev response. The initial procedure involves the development of a low pass prototype with cross couplings between non-adjacent resonators. The filter is designed at a center frequency of 2.44 GHz with a fractional bandwidth of 3.42%. This frequency is presenting for wireless LAN application and operates in the ISM (Industrial, Scientific and Medical) band which is covering from 2.4 GHz to 2.4835GHz. There are several steps to design this filter that are including by determine filter specifications, order of filter, low pass filter prototype elements, low pass to band pass transformation, physical dimension (width, spacing, length) and wavelength guide. The EM simulation of the filter design was completed on Microwave Office software and fabricated on FR4 substrate by using etching process. The explanation details for design procedure, simulated results, methods and techniques are discussed in this report.

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