- Turkish Journal of Electrical Engineering and Computer Science
- Vol: 28 Issue: 2
- Design of a low pass filter using rhombus-shaped resonators with an analytical LC equivalent circuit
Design of a low pass filter using rhombus-shaped resonators with an analytical LC equivalent circuit
Authors : Mohsen Hookari, Saeed Roshani, Sobhan Roshani
Pages : 865-874
Doi:10.3906/elk-1905-153
View : 6 | Download : 3
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :In this paper, a new method is presented for the design of a low pass filter LPF based on an LC equivalent circuit. Firstly, new formulas are proposed to calculate an LC equivalent circuit of a rhombus-shaped resonator. Secondly, the transfer function and transmission zero of the rhombus-shaped resonator are extracted, based on the presented formulas. Then other rhombus-shaped resonators are designed, based on the extracted formulas. The proposed filter has a cut-off frequency with an attenuation level of 3 dB at 1.54 GHz. The obtained return loss and insertion loss in the pass band are 16 dB and 0.1 dB, respectively. The designed filter is fabricated on RT-5880 with 31 mil thickness.Keywords : Compact size, LC equivalent circuit, low pass filter, microstrip, rhombus-shaped resonator, wideband