| 摘要 |
<p>A triplet line is constituted of a resonance element formed by interposing a dielectric member between a pair of ground conductors (6), the length of the line is selected to be about 1/4 of the wavelength, and resonators (5) with one end grounded are combined to constitute a band-pass filter. Each resonator (5) is isolated by a separator (9) to prevent a waveguide mode in the triplet line. A plurality of triplet lines are superposed, and the electromagnetic coupling among the resonators (5) is accomplished by a coupling means (7) provided in the ground conductor and the dielectric member. Resonators at both terminals are coupled to input and output terminals (1, 2).</p> |
