In this paper, a design technique that includes a synthesis procedure and a realization method for a microstrip open-loop resonator filter with two passbands is described. Transmission zeros of the filter-transfer function are employed to split a single passband into two passbands, and the filter-coupling structure used to realize two passbands is also given. The measured result shows good agreement with the synthesized one.
- Coupling matrix
- Open-loop resonator
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering