This paper presents a negative coupling structure that can be fabricated with ease and can be embedded in a surface mountable resonator filter. Unlike the existing negative coupling structures, adding the presented structure can be executed without increasing the number of fabrication steps. In addition, one of the unique features is that surface-mountable filters can adopt the negative coupling structure presented in this paper as it does not necessitate creating slots on the outer surfaces of filters. A complete design approach for the negative coupling structure is provided. For demonstrating the presented negative coupling structure and its design method, we have designed a fourth-order surface-mountable post-loaded cavity filter with a pair of transmission zeros. The measured frequency response exhibits a pair of transmission zeros, which verifies that the presented coupling structure has a negative coupling value.
|Title of host publication||2019 49th European Microwave Conference, EuMC 2019|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||4|
|Publication status||Published - 2019 Oct|
|Event||49th European Microwave Conference, EuMC 2019 - Paris, France|
Duration: 2019 Oct 1 → 2019 Oct 3
|Name||2019 49th European Microwave Conference, EuMC 2019|
|Conference||49th European Microwave Conference, EuMC 2019|
|Period||19/10/1 → 19/10/3|
Bibliographical noteFunding Information:
ACKNOWLEDGMENT This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2018R1A2B6006095).
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2018R1A2B6006095).
© 2019 European Microwave Association (EuMA).
- Surface-mountable resonator filter
- negative coupling
ASJC Scopus subject areas
- Computer Networks and Communications