Dual-band bandpass resonator and dual-band bandpass filter
A resonator-pass, dual-band-pass technology, applied in resonators, waveguide-type devices, electrical components, etc., can solve the problems of insufficient and complete filtering of signals, unfavorable miniaturization of filters, design of dual-band pass filters, etc. Achieving the effect of miniaturization
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no. 1 Embodiment approach
[0073] figure 1 This is a structural example of the dual-band bandpass resonator of the present invention, and the resonator is formed by forming a conductive pattern on one surface of a rectangular dielectric substrate. In addition, conductors exist in hatched areas in the figure, and areas without hatching surrounded by hatched areas represent portions where the dielectric substrate under the conductors is exposed. This description is the same for all the following drawings showing resonators and filters.
[0074] The dual-band bandpass resonator is composed of a center conductor 11 , a set of ground conductors 12 , a center conductor short-circuit portion 13 , and a set of stub conductors 14 . One set of ground conductors is formed at intervals along one set of two opposing sides of the rectangular dielectric substrate, and both ends thereof extend at right angles along the other set of opposing sides of the dielectric substrate so as to approach each other. The input an...
no. 2 Embodiment approach
[0081] image 3 A second embodiment of the dual-band bandpass resonator of the present invention is shown.
[0082] image 3 The dual-frequency bandpass resonator is composed of a center conductor 11 , a set of ground conductors 12 , a center conductor short-circuit portion 13 and a set of stub conductors 24 . Except for the stub conductor 24, everything is the same as the structure of the first embodiment ( figure 1 ) are the same, so the same reference numerals are added, and descriptions are basically omitted. The same applies to the following embodiments.
[0083] The stub conductors 14 of the first embodiment are arranged so that their entire lengths are parallel to the central conductor 11, but the pair of stub conductors 24 of the second embodiment are as follows: image 3 As shown, most of them are parallel to the central conductor 11 from the beginning, but they are bent at approximately right angles toward the ground conductor 12 in the vicinity of the central c...
no. 3 Embodiment approach
[0086] Figure 4 A third embodiment of the dual-band bandpass resonator of the present invention is shown.
[0087] Figure 4 The dual-frequency bandpass resonator is composed of a center conductor 11 , a set of ground conductors 12 , a center conductor short-circuit portion 13 , and a set of stub conductors 34 . The only difference from the first and second embodiments is the stub conductor 34 .
[0088]In the stub conductor 24 of the second embodiment, most of its longitudinal direction is parallel to the central conductor 11, but it bends toward the ground conductor 12 in the vicinity of the central conductor short-circuit portion 13, and then bends toward the ground conductor 12 in front of the ground conductor 12 again. The central conductor short-circuit portion 13 is bent in a direction and connected to the central conductor short-circuit portion 13 . By making the connection position with the center conductor short-circuit portion 13 close to the ground conductor 12...
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