Milad Ekhteraei - Young Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
Hamid Sherafat Vaziri - Young Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
Mohsen Hayati - Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
Farzin Shama - Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran

In this paper, a novel compact lowpass filter using lattice-shaped resonator is presented with wide rejection band. The proposed lowpass filter is designed to fabricate on a Duroid 5880 microstrip layout. The aim of design was to obtain a lowpass filter with -3 dB cut off frequency of 4.16 GHz. Simulated results showed a low insertion loss about 0.1 dB in 94% of the passband region. The size of the designed filter is only 9.5 × 9.5mm2.

Lowpass Filter; Microstrip; Wide Rejection Band