TM dual-mode balanced band-pass filter based on SIW (substrate integrated waveguide)
The invention discloses a TM dual-mode balanced band-pass filter based on SIW (substrate integrated waveguide). The band-pass filter comprises a first dielectric substrate, a first metal plate, a second dielectric substrate, a second metal plate and a third dielectric substrate which are sequentiall...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a TM dual-mode balanced band-pass filter based on SIW (substrate integrated waveguide). The band-pass filter comprises a first dielectric substrate, a first metal plate, a second dielectric substrate, a second metal plate and a third dielectric substrate which are sequentially and coaxially arranged from top to bottom, micro-strip lines are arranged on the first dielectricsubstrate and the third dielectric substrate, a first rectangular gap rotating anticlockwise by 38 degrees is formed in the first metal plate, the second dielectric substrate is provided with a metalthrough-hole array and two perturbation metal holes, and a second rectangular gap rotating clockwise by 38 degrees is formed in the second metal plate. According to the band-pass filter, two poles aregenerated in a pass band, a transmission zero is generated on each side of the pass band, and the band-pass filter has high selectivity. Besides, the position and the size of a coupling gap are designed, six modes near TM120 a |
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