This paper introduces a substrate-integrated waveguide (SIW) filter that can be tuned using contactless rotatable flaps. There is no mechanical contact between the tuning flaps and the filter body, and this gives a number of advantages in frequency tuning since the flaps do not experience any friction. In addition, it can be tuned with little power consumption, while maintaining stability. Periodic mushroom shaped pins are formed in the flap so that the field generated in the resonator does not leak. Therefore, the Q-factor of the resonator does not decrease even though the flaps are floating in the air. A third-order SIW filter was fabricated and measured for verification. The center frequency is from 2.66 GHz to 3.34 GHz and the insertion loss varies from 0.79 dB to 0.88 dB.
|Title of host publication||2019 IEEE MTT-S International Microwave Symposium, IMS 2019|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||4|
|Publication status||Published - 2019 Jun|
|Event||2019 IEEE MTT-S International Microwave Symposium, IMS 2019 - Boston, United States|
Duration: 2019 Jun 2 → 2019 Jun 7
|Name||IEEE MTT-S International Microwave Symposium Digest|
|Conference||2019 IEEE MTT-S International Microwave Symposium, IMS 2019|
|Period||19/6/2 → 19/6/7|
Bibliographical noteFunding Information:
ACKNOWLEDGMENTS This work was supported by the Korean Government (MSIT) through National Research Foundation of Korea (NRF) under Grant NRF-2018R1A2B6006095.
© 2019 IEEE.
- SIW filter
- bandpass filter
- reconfigurable filter
- tunable filter
ASJC Scopus subject areas
- Condensed Matter Physics
- Electrical and Electronic Engineering