Center frequency and bandwidth switchable substrate integrated waveguide filters
Published online by Cambridge University Press: 16 October 2019
Abstract
This paper presents center frequency and bandwidth switchable substrate integrated waveguide filters loaded with PIN diodes. The diodes are added in the slot on the surface of the resonators to switch the resonant frequencies and the coupling coefficients. Although the introduction of the slot causes extra radiation loss, it is small and acceptable. The proposed center frequency switchable filter has four center frequency switchable states of 1.78, 1.82, 1.88, and 1.91 GHz, while the bandwidth only changes ±0.64%. The bandwidth switchable filter has two states with 3 dB bandwidths of 70 and 103 MHz at a center frequency of 2.08/2.09 GHz. The measured performance of the fabricated filters shows good agreement with the simulation.
- Type
- Research Papers
- Information
- International Journal of Microwave and Wireless Technologies , Volume 12 , Issue 4 , May 2020 , pp. 282 - 287
- Copyright
- Copyright © Cambridge University Press and the European Microwave Association 2019
References
- 1
- Cited by