PCB-based integrated directional coupler
A technology of directional couplers and printed circuit boards, which is applied to circuits, electrical components, waveguide devices, etc., can solve problems such as large areas, and achieve the effects of small areas, improved isolation, and strong tuning
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[0032] The present invention will be further described below through the embodiments and in conjunction with the accompanying drawings.
[0033] The integrated directional coupler based on the printed circuit board (PCB) of this embodiment is such as Figure 3 to Figure 5 shown, where image 3 is the top view of the directional coupler layout, Figure 4 for image 3 Sectional view of middle section A1, Figure 5 for image 3 Sectional view of middle section A2.
[0034] Such as image 3 As shown, the directional coupler includes two layers of mutually coupled coils, that is, the first coil (indicated by a solid line) and the second coil (indicated by a dotted line), both of which are hexagonal in shape and are concentric multi-turn structures. The outermost circle (or the innermost circle) leads out the two ends of the coil. The two ends of the first coil are respectively used as the input end and the through end, and the two ends of the second coil are respectively use...
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