Ultra-wideband half-folded antipodal slot antenna and method of making the same
A slot antenna and half-folding technology, which is applied in the microwave field, can solve the problems of poor cross-polarization characteristics of ultra-wideband slot antennas, and achieve the effects of good cross-polarization characteristics, simple structure and simple manufacturing process.
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[0013] control attached figure 1 , its structure is that the semi-folded antipodal gap is divided into two parts, the top sub-slot 1 and the bottom sub-slot 2, which are respectively fabricated on the front and bottom of the dielectric board, and the two pass through two rows of metallized vias (11-12 per row) ) connected into a complete half-folded antipodal gap;
[0014] In the half-folded antipodal gap, the angle 7 between the gradient line and the horizontal line is controlled at about 40-50 degrees; the characteristic impedance of the microstrip feeder is 50 ohms, and the microstrip feeder is connected to the rectangular patch branch through a three-section ladder impedance transformation structure , the microstrip feeder 8 , the rectangular patch tuning stub 4 and the top layer sub-slot 2 are located on the same side of the dielectric substrate 1 .
[0015] The manufacturing method of the ultra-wideband half-folded antipodal slot antenna is to use the printed circuit bo...
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