Equal-length substrate integrated waveguide phase shifter
A substrate-integrated waveguide and phase shifter technology, applied to waveguide devices, electrical components, circuits, etc., can solve problems such as unequal length, limited bandwidth, complex structure, etc., and achieve high processing yield, wide bandwidth, and processing The effect of low difficulty
Active Publication Date: 2020-11-03
上海星申仪表有限公司
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[0008] The technical problem to be solved by the present invention is to provide an equal-length substrate-integrated waveguide phase shifter, which solves the disadvantages of the current substrate-integrated waveguide phase shifter, which have complex structures, limited bandwidth, and unequal lengths
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[0036] The phase shifter is implemented on a Rogers 5880 dielectric substrate, the relative permittivity of the substrate 1 is 3.38, the thickness of the substrate 1 is h, and the thickness of the metal on the substrate 1 is t. The phase shifter includes five parts: the first rectangular part 3, the first transition part 4, the second rectangular part 5, the second transition part 6, and the SIW body 2 connected in sequence; wherein, the characteristic impedance of the first rectangular part 3 is 50Ω; the characteristic impedance of the second rectangular portion 5 is 108Ω. Two rows of metallized through holes 7 are symmetrically distributed on both sides of the center line of the SIW body 2 in the transmission direction.
[0037] Such as figure 2 , image 3 As shown, the physical variables in the figure are defined as follows: w ms , l ms Respectively, the width and length of the first rectangular part 3 with a characteristic impedance of 50Ω, l t1 is the length of the ...
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The invention discloses an equal-length substrate integrated waveguide phase shifter, and belongs to the technical field of radar liquid level meters. The SIW antenna comprises two parts, namely a microstrip line part and an SIW body, which are realized on a substrate; the microstrip line part is formed by sequentially connecting a first rectangular part, a first transition part, a second rectangular part and a second transition part, the first transition part is an isosceles trapezoid, the side lengths of the upper bottom edge and the lower bottom edge of the first transition part are respectively equal to the widths of the first rectangular part and the second rectangular part, and the second transition part is an isosceles trapezoid; the length of the upper bottom edge of the second transition part is equal to the width of the second rectangular part, and the lower bottom edge of the second transition part is connected with the SIW body. By adopting the equal-length structure and the plane structure of the single-layer substrate, the structure is simple, the processing difficulty is low, the processing yield is high, and the production quality is stable; and an equal-length planar structure is adopted, so the integration with other planar passive and active circuits is facilitated, and wide application can be realized.
Description
technical field [0001] The invention relates to an equal-length substrate integrated waveguide phase shifter, belonging to the technical field of radar liquid level gauges. Background technique [0002] Substrate Integrated Waveguide (SIW) is a new form of microwave transmission line. Its design idea comes from the traditional waveguide structure. Through two rows of metallized through holes processed on the dielectric substrate, it realizes a waveguide similar to a metal waveguide. field propagation mode. The substrate integrated waveguide itself has the advantages of traditional metal waveguides and microstrip lines, and it is convenient to realize a planar circuit type high-performance microwave and millimeter wave circuit structure. [0003] Phase shifter is one of the basic components of microwave and millimeter wave circuits and systems, especially in phased array systems, which has been widely used. In order to reduce the circuit complexity in some circuit designs a...
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IPC IPC(8): H01P1/18
CPCH01P1/182H01P1/184
Inventor 陈耀彭浩吴源浩王伟高世平吴雪琼宋丹丹奚玮君王三义赵莹玉
Owner 上海星申仪表有限公司