Design A Microstrip Hairpin Bandpass Filter For GPS Application

Norbaizura, Dahalan (2011) Design A Microstrip Hairpin Bandpass Filter For GPS Application. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This project is mainly focused on development of microwave filter by using bandpass filter principle. The reason of this project is to develop the microwave used widely in the application and to provide the graduate engineer with knowledge about the potential of the microwave technique to implement practical microwave. Microwave frequencies generally operate at frequencies between 300 MHz and 300 GHz. Filter is highly desirable in communication systems. It functions to pass through the desired frequencies within the range and block the unwanted frequencies. In addition, filters are also needed to remove out the harmonics that are present in the communication system. This thesis presents the design of a hairpin bandpass filter. The main objective of this project is to design bandpass filter of reduced size and enhanced bandwidth. This filter are designed by using the specification as using the Chebyshev response of 0.5 dB ripples and hairpin filter for frequency 1.575 GHz. It was found that the optimum designed filter has a centre frequency of 1.575 GHz, exhibits excellent return loss in the passband of less than -20 dB. Consequently, the proposed filter is not only of compact size, it also exhibits excellent good return loss by using the AWR and CorelDRAW software.

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