Band pass filter

Abstract

Abstract PURPOSE:To obtain a stable characteristic and also to attain miniaturization and light weight of a microwave communication device by providing a prescribed hole to a dielectric substrate between half-wavelength resonators or the half- wavelength resonator and an input/output line. CONSTITUTION:The dielectric substrate 3 is provided with the resonators 1 made of conductor thin film and the input/output lines 2. The amount of coupling among the resonators 1 depends on the interval of the resonators and the size and number of the holes. Since the dielectric constant is decreased substantially by providing the holes, the size of the dielectric substrate 3 is decreased by providing the holes above and the interval between the half-wavelength resonators or the half-wavelength resonator and the input/output line is narrowed.

Inventors

• 👤 Yoshio Kasuga
• 👤 春日　義男

Bibliographic Details