Microstrip band-pass filter with −67 dB stop band up to 8.8 times the pass-band center frequency
Published online by Cambridge University Press: 18 September 2017
Abstract
Step-impedance resonators and step-impedance capacitor coupling pads are introduced to microstrip band-pass filters to suppress spurious stop-band responses up to the ninth order, thereby providing a very wide stop band. Combined with improvements in existing suppression techniques, the overall suppression in one of the filters, with 1 GHz center frequency and 42% bandwidth, is −54 dB, up to 8.9 GHz. By also using suitably placed resistors, spurious levels are now depressed to −67 dB up to 8.8 GHz, with only 0.03 dB extra pass-band loss.
- Type
- Research Papers
- Information
- International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 10 , December 2017 , pp. 1937 - 1944
- Copyright
- Copyright © Cambridge University Press and the European Microwave Association 2017
References
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