Compact bandpass filter with reconfigurable X-band using stepped impedance resonator and folded structure

The Journal of Engineering

关键词: stepped impedance resonator topology;    ON-OFF states;    downlink X-b;    services;    downlink frequency range;    frequency 8.00 GHz to 8.4 GHz;    short-circuit condition;    stepped impedance resonator;    uplink X-b;    services;    open-circuit condition;    PIN diode;    frequency switching;    folded structure;    positive-intrinsic-negative diode;    frequency 7.25 GHz to 7.9 GHz;    compact b;    pass filter;    reconfigurable X-b;    microstrip b;    pass filter;   

DOI  :  10.1049/joe.2017.0796

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

A reconfigurable X-band microstrip bandpass filter based on the stepped impedance resonator topology with two folded stubs is proposed. Reconfiguration is enabled in the microstrip filter using positive–intrinsic–negative (PIN) diode and the proposed filter performs frequency switching between uplink and downlink X-band services. The prototype filter is realised ideally using open-circuit and short-circuit conditions that are designed in a way similar to the design using PIN diodes that provide the same results. From the simulation and measured results, it is inferred that by altering the ON/OFF states, the filter can work from downlink frequency range of 7.25–7.9 GHz to the uplink frequency range of 8.00–8.4 GHz. Comprehensive studies are conducted on a fabricated prototype to assess its performance from which encouraging results are obtained.

【 授权许可】

CC BY