A Broadband High Efficiency Transmissive Polarization Converter
A polarization conversion and transmission type technology, applied in the field of electromagnetic wave propagation, can solve problems such as low transmission efficiency, large dielectric loss, and excessive thickness, and achieve the effects of low process requirements, easy processing and small size
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Embodiment 1
[0043] refer to figure 1 , a broadband high-efficiency transmissive polarization converter, comprising: two layers of dielectric substrates 1 and 2 stacked; metal pattern 3;
[0044] The metal pattern 3 is composed of a number of polarization conversion unit structures arranged periodically; the polarization conversion unit structure includes a metal ring and a dipole placed in the metal ring, and the dipole and the metal ring do not interact with each other. Contact; the metal patterns on each surface may be the same or different; the dielectric constants of each of the dielectric substrates may be the same or different;
[0045] The metal ring is a square metal ring, and two metal stub groups are connected inline. The metal stub groups are rotationally symmetrically distributed around the axis of the metal ring, and each metal stub group includes two parallel metal stub groups. A long metal stub 5; one end of the metal stub 5 is connected to the inner wall of the metal rin...
Embodiment 2
[0060] As another example of linear polarization conversion, the transmission phase difference can be controlled to be 180° by changing the size of the unit, so as to realize 90° polarization conversion between line-line polarization;
[0061] Such as Figure 7 , the polarization conversion unit structure is a 90° linear polarization unit structure, the period p of the 90° linear polarization unit structure is 4mm, and the thickness is 3mm, which is about the center frequency wavelength of the working frequency band of the broadband high-efficiency transmission polarization converter A quarter of that, the dielectric constant of the dielectric substrates 1 and 2 is 2.55. Etch metal square rings with a length p of 4 mm and a width s of 0.2 mm along the four sides of the dielectric substrate 1 and 2, and there are two square rings with a length ld of 0.8 mm, a distance d of 1.1 mm, and a width s of 0.2mm stub bar, an orthogonal cross vibrator placed along the X-axis and Y-axis ...
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