Design and Analysis microstrip dual-band bandpass filter with tunable bandwidth and center frequency

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Khajavi Morteza; AMIRI SHERVIN; Shakiba Mohsen

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Paper Information

Journal: INFORMATION AND COMMUNICATION TECHNOLOGY IN POLICING Year:2022 | Volume:2 | Issue:4 ( 8) Page(s): 95-102

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Information Journal Paper

Title

Design and Analysis microstrip dual-band bandpass filter with tunable bandwidth and center frequency

Author(s)

Khajavi Morteza | AMIRI SHERVIN | Shakiba Mohsen | Issue Writer Certificate

Keywords

microstrip

dual-band

bandpass filter

parallel stubs

asymmetric design

Abstract

This paper introduces a novel microstrip dual-band bandpass filter that combines a stepped impedance resonator (SIR), parallel stubs and asymmetric input and output ports on both sides. This configuration can lead to desired frequency characteristics like central frequency and required band passes. The required bandwidths will be optimized by stepped impedance resonator and the return and the insertion losses by the parallel stubs on both sides of the structure. Finally, we obtained a suitable isolated frequency response between the two passes bands by making asymmetric the location of the input/output port on the sides. For design and manufacturing a dual-band filter with 4. 7 GHz and 7. 16 GHz frequencies with the same 87 MHz bandwidth in each band, a suitable structure is proposed and used. The circuit analysis of the filter is performed section by section, to better examine results. The simulation and test results of the proposed structure indicate a 0. 92 and 0. 45dB insertion loss and 21 & 24. 31 dB return losses in the two bands. In the following, we show by changing the dimensions of the middle stubs, the central frequency and bandwidth of the filter can be tuned. The main features of this filter are compact size, dual bands, and proper passing bands isolation.

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APA: Copy

Khajavi, Morteza, AMIRI, SHERVIN, & Shakiba, Mohsen. (2022). Design and Analysis microstrip dual-band bandpass filter with tunable bandwidth and center frequency. INFORMATION AND COMMUNICATION TECHNOLOGY IN POLICING, 2(4 ( 8) ), 95-102. SID. https://sid.ir/paper/954549/en

Vancouver: Copy

Khajavi Morteza, AMIRI SHERVIN, Shakiba Mohsen. Design and Analysis microstrip dual-band bandpass filter with tunable bandwidth and center frequency. INFORMATION AND COMMUNICATION TECHNOLOGY IN POLICING[Internet]. 2022;2(4 ( 8) ):95-102. Available from: https://sid.ir/paper/954549/en

IEEE: Copy

Morteza Khajavi, SHERVIN AMIRI, and Mohsen Shakiba, “Design and Analysis microstrip dual-band bandpass filter with tunable bandwidth and center frequency,” INFORMATION AND COMMUNICATION TECHNOLOGY IN POLICING, vol. 2, no. 4 ( 8) , pp. 95–102, 2022, [Online]. Available: https://sid.ir/paper/954549/en

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