Hybrid microstrip compact hairpin bandpass filter

Hsu, Cheng‐Hsing; Hsu, Chung-I G.; Ho, Hsuan-An

doi:10.1109/apmc.2009.5385217

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…Therefore, applications of Tzs have been studied as described in. [2][3][4][5] In, [6] a dual-mode resonator is used to obtain steepness and high out-of-band suppression levels, but little is mentioned about a design procedure for a BPF with a dualmode resonator. Multiplexers with hairpin resonators have also been considered for BPF applications.…”

Section: Introductionmentioning

confidence: 99%

Planar Quadruplexer with Adjacent Passbands Using Bandpass Filters Based on Dual-path Hairpin Resonators

Tanii,

Wada

2023

Transactions of The Japan Institute of Electronics Packaging

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In order to realize a planar quadruplexer, we analyzed a dual-mode resonator based on a hairpin resonator, focusing on the resonant frequency and transmission zero. Using the analyzed resonator, four types of bandpass filters (BPFs) with different center frequencies were designed for use in a quadruplexer applying a microstrip line structure. The target passbands of each BPF are approximately 1.9 to 2.2 GHz, 2.3 to 2.6 GHz, 2.7 to 3.0 GHz, and 3.1 to 3.5 GHz, which are very close together. A matching circuit to connect the four BPFs was designed in order to realize a quadruplexer, and the circuit was analyzed using a circuit simulator and an electromagnetic simulator. The analytical results are in good agreement with the experimental results based on the microstrip line structure.

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