Investigation of dualband fan-shaped microstrip bandpass filter

Abstract

In this study, design and simulation of microtrip bandpass filter is presented using RT/Duroid 6010.2 lm substrate. This filter has fan-shaped topology with small dimensions of 12x12 mm 2 , designed for dual band frequencies at 3.41 and 6.14 GHz. The insertion loss and return loss of initial band at 3.41 GHz are-0.7 and-38.224 dB respectively and its bandwidth ranged from 3.3561 to 3.48 GHz. On the other hand, for 2 nd band at 6.14 GHz, the insertion loss and return loss have been-1.377 and-14 dB respectively with bandwidth ranged from 6.0951 to 6.1782 GHz.

Highly selective dual-band interdigital bandpass filter for C-band applications

“…The simulated results showed an acceptable insertion loss value (𝑆 21 = −1 dB), however, a poor quality factor was achieved (𝑄=2.7) and the structure was deposited on the top face of a sizeable Rogers RO4003C substrate (>10×10 mm 2 ). In Abdulkareem et al [20], a fan-shaped microstrip bandpass filter was suggested. The simulated results are satisfying in term of reflection coefficient (𝑆 11 < −10 dB), but a slightly high insertion loss (𝑆 21 = −1.377 dB) was obtained and the structure was implemented on a large RT/Duroid 6010.2 dielectric substrate (12×12 mm 2 ).…”