L-band miniature low-pass filter
A low-pass filter and L-band technology, applied in the electronic field, can solve the problem that the filter cannot meet the requirements, and achieve the effects of light weight, cost reduction, and low loss
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[0019] like figure 2 As shown, the low-temperature co-fired ceramics and metal patterns used in the L-band micro low-pass filter of the present invention are fired at 800-900° C. at one time, and have good reliability and temperature stability. The structure adopts three-dimensional integration, multi-layer folding structure and metal shielding on the outer surface to realize grounding and packaging, so that the volume is greatly reduced.
[0020] like figure 2 As shown, the L-band micro low-pass filter of the present invention has a device size of 2mm 1.2mm 1mm, using the relative permittivity of LTCC ceramic dielectric 9.2, the thickness of each layer of ceramic medium with metal layer is 40 microns, the thickness of metal layer is 10 microns, the metal conductor is silver, and the thickness of each layer of ceramic medium without metal layer is 50 microns. The entire LTCC miniature low-pass filter substrate is composed of 20 layers of LTCC ceramic media. All the sur...
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