Design of Multilayer Dual-Band BPF and Diplexer with Zeros Implantation Using Suspended Stripline

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概要

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• In this paper, a dual-band bandpass filter (BPF) of multilayer suspended stripline (SSL) structure and an SSL diplexer composed of a low-pass filter (LPF) and a high-pass filter (HPF) are proposed. Bandstop structure creating transmission zeros is adopted in the BPF and diplexer, enhancing the signal selectivity of the former and increasing the isolation between the diverting ports of the latter. The dual-band BPF possesses two distinct bandpass structures and a bandstop circuit, all laid on different metallic layers. The metallic layers together with the supporting substrates are vertically stacked up to save the circuit dimension. The LPF and HPF used in the diplexer structure are designed by a quasi-lumped approach, which the LC lumped-elements circuit models are developed to analyze filters' characteristics and to emulate their frequency responses. Half-wavelength resonating slots are employed in the diplexer's structure to increase the isolation between its two signal diverting ports. Experiments are conducted to verify the multilayer dual-band BPF and the diplexer design. Agreements are observed between the simulation and the measurement.

• 2012-07-01

著者

• Ho Min-hua

  Graduate Instituite Of Communications Eng. And Dept. Of Electronic Eng. National Changhua University

• HSU Wei-Hong

  Universal Microwave Technology Inc.

• HO Min-Hua

  Graduate Institute of Communications Eng. and Dept. of Electronic Eng., National Changhua University of Education

関連論文

• Symmetric/Asymmetrical SIRs Dual-Band BPF Design for WLAN Applications
• The Dual-Band Bandpass Filters Using Doubly Parallel-Coupled SIRs with Multiple Zeros for WLAN Applications
• Design of Multilayer Dual-Band BPF and Diplexer with Zeros Implantation Using Suspended Stripline

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