Chip ltcc miniature 3db directional coupler
A directional coupler and miniature technology, which is applied to waveguide-type devices, electrical components, connecting devices, etc., can solve the problems of unsuitability for mass production, large volume, narrow bandwidth, etc., and achieves simple structure, high coupling degree, and yield. high effect
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[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0038] like figure 1 , figure 2 and image 3 Shown, chip type LTCC miniature 3dB directional coupler of the present invention is the multilayer substrate 1 that several layers are made by high-frequency low-loss dielectric material, the asymmetrical stripline and coupling stripline that are printed on the setting substrate and The ground terminal arranged on the upper and lower sides of the directional coupler constitutes.
[0039] The directional coupler of the present invention is a four-port device, which are respectively the first port P1, the second port P2, the third port P3 and the fourth port P4 printed with a 50 ohm impedance input, and these four ports are respectively arranged in sequence. The four corners of the bottom surface of the bottom substrate 1 .
[0040] The asymmetric stripline is divided into a first asymmetric stripline TL1, a sec...
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