Compact three-port network of which side faces are communicated with one another
A three-port, compact technology, applied in the direction of connection devices, waveguide devices, electrical components, etc., can solve the problems of complex matching circuit structure, narrow bandwidth, large volume, etc., achieve obvious advantages, improve modeling optimization calculation efficiency Effect
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Embodiment 1
[0038] Such as Figure 1a and Figure 1b shown.
[0039] A compact three-port network, comprising at least three transmission lines 2, and an electromagnetic channel 3; the two ends of the electromagnetic channel 3 are respectively a part of a plane A and a plane B; One of the two end faces of the channel 3 is connected; the electromagnetic channel 3 is formed by a branch, and the electromagnetic wave branch is formed by five through holes 31 communicated along the Y direction;
[0040] In order to achieve a compact design, the maximum length t of the electromagnetic channel is less than 0.3 times the wavelength in free space corresponding to the central operating frequency of the compact three-port network.
[0041] The three transmission lines 2 communicate with one of the two end faces of the electromagnetic channel 3 through one cross section thereof. The axes of the three transmission lines 2 are parallel to each other.
[0042] The three transmission lines 2 are all r...
Embodiment 2
[0048] Such as Figure 2a and Figure 2b shown.
[0049] Compared with the implementation example 1, the main difference between this implementation example is that the three transmission lines 2 communicate with one of the two end surfaces of the electromagnetic channel 3 through one side thereof. One of the transmission lines 2 is an input transmission line, and its axis is also parallel to the axes of the other two output transmission lines. The two output transmission lines communicate directly with each other except through the electromagnetic channel 3 .
Embodiment 3
[0051] Such as image 3 and 4 shown.
[0052]This implementation example is a further realization of implementation example 2, and all three transmission lines are single-ridge waveguides, and their working bandwidths are all 12-17 GHz. The three-segment network has a reflection coefficient below -16dB over the full operating bandwidth of all waveguides. The thickness of the electromagnetic channel is 1 mm, which is 0.048 times the wavelength in free space corresponding to the central operating frequency of the compact three-port network.
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