Semi-slot antenna with coplanar waveguide feed metal via hole step impedance

共面波导馈电金属过孔阶跃阻抗的半槽天线

Abstract

共面波导馈电金属过孔阶跃阻抗的半槽天线涉及一种缝隙天线,该天线包括介质基板(1)、介质基板(1)上的金属地(2)和辐射槽缝(3)、共面波导馈线(4);金属地(2)上有辐射槽缝(3);辐射槽缝(3)的一端短路,另一端(6)开路;在辐射槽缝(3)近开路端部分有两排金属化过孔(7)阵列形成低阻槽缝(8);辐射槽缝(3)其余部分是高阻槽缝(9);共面波导馈线(4)外导体(5)与金属地(2)相连,其末端内导体(12)跨过高阻槽缝(9)在其边缘(11),与金属地(2)连接。该天线是多频带工作,可减少天线尺寸、交叉极化、遮挡和改善隔离。
The invention discloses a semi-slot antenna with coplanar waveguide feed metal via hole step impedance, which relates to a slot antenna. The antenna comprises a dielectric substrate (1), a metal ground (2) and a radiation slot (3) on the dielectric substrate (1) and a coplanar waveguide feed line (4), wherein the metal ground (2) is provided with the radiation slot (3); one end of the radiation slot (3) is short-circuited and the other end (6) is open-circuited; the part, close to the open-circuited end, of the radiation slot (3) is provided with an array of two rows of metal via holes (7) to form a low-impedance slot (8); the rest part of the radiation slot (3) is a high-impedance slot (9); an outer conductor (5) of the coplanar waveguide feed line (4) is connected with the metal ground (2), and the tail inner conductor (12) passes across the high-impedance slot (9) to be connected with the metal ground (2) at the edge (11). The antenna works under multiple frequency bands, the antenna size, cross polarization, and shielding are reduced, and isolation is improved.

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