This paper comprises a brief idea related to designing of a bandpass filter (BPF) using microstrip parallel coupled line structure and some calculations based on distributed components like inductors and capacitors. As Bandpass filters play a significant role in wireless communication systems related to transmitted and received signals, so filtering at a certain center frequency with a specific bandwidth is a great concern. The center frequency with 5.84 GHz is mainly used in Wi4 (Worldwide interoperability version-4) for highspeed wireless broadband solution that is configured to transport data, voice, and IP video which requires more bandwidth. So designing a filter of such property is our concern. The design filter consists of three sections: two coupled lines separated by a non-uniform line resonator. The layout is designed to have a centre frequency at 5.84 GHz and bandwidth of 0.0745 and also the length of each line is tuned such that the impedance of filter is 50Ω. The paper presents a novel approach to improve low insertion loss and high selectivity. The simulative analysis is performed using FEKO software.