Broadband low-profile dielectric patch filter antenna based on double-slit feed structure
A filter antenna and low-profile technology, which is applied in the field of broadband low-profile dielectric patch filter antenna, can solve problems such as low gain, achieve good selectivity, and realize the effect of antenna bandwidth
Active Publication Date: 2020-11-03
NANTONG UNIVERSITY +1
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Problems solved by technology
However, these designs are based on conventional dielectric resonator antennas, which have a higher profile and relatively lower gain than microstrip patch antennas
Method used
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0023] Such as figure 1 and figure 2 As shown, the present invention discloses a broadband low-profile dielectric patch filter antenna based on a double-slit feeding structure, including a lower dielectric substrate 4, a metal reflective floor 3, an upper dielectric substrate 2, and a dielectric substrate stacked sequentially from bottom to top. Patch 1, the lower surface of the lower dielectric substrate 1 is provided with a microstrip feeder 7 for coupling and feeding; the end of the projection of the microstrip feeder 7 on the metal reflective floor 3 and the metal reflective floor 3 overlaps is the antenna input end; the metal The surface of the reflective floor 3 is etched with a first coupling slit 5 and a second coupling slit 6 in parallel positions; the length of the first coupling slit 5 is shorter than the length of the second coupling slit 6; the...
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The invention particularly relates to a broadband low-profile dielectric patch filter antenna based on a double-slit feed structure, and belongs to the technical field of wireless communication. The antenna comprises a lower dielectric substrate, a metal reflection floor, an upper dielectri`c substrate and a dielectric patch which are sequentially stacked from bottom to top, wherein the lower surface of the lower dielectric substrate is provided with a microstrip feeder line used for coupled feeding; a first coupling gap and a second coupling gap which are parallel in position are etched in the surface of the metal reflection floor; the length of the first coupling slot is smaller than that of the second coupling slot; the first coupling slot is formed in the center line of the metal reflecting floor; the second coupling slot is arranged between the first coupling slot and the antenna input end; the projection of the microstrip feeder line on the metal reflecting floor is vertically intersected with the first coupling slot and the second coupling slot respectively; the dielectric patch and the upper dielectric substrate are stacked to form a dielectric patch resonator of the antenna; the first coupling gap and the second coupling gap are used for aperture coupling between the dielectric patch resonator and the microstrip feeder.
Description
technical field [0001] The invention specifically relates to a broadband low-profile dielectric patch filter antenna based on a double-slit feeding structure, which belongs to the technical field of wireless communication. Background technique [0002] In traditional communication systems, the antenna and filter are usually designed as two separate components, and then connected through a matching network, which will inevitably increase the volume of the system, resulting in additional loss and complexity of the design. In order to meet the development requirements of integration, miniaturization and low loss, various filter antennas have been widely developed in recent years. This antenna has dual functions of filtering and radiation, which can effectively eliminate the interconnection matching network and realize the miniaturization of the RF front-end circuit. [0003] Microstrip patch antennas are widely used in the design of filter antennas due to their superior charac...
Claims
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Login to View More IPC IPC(8): H01Q1/36H01Q1/38H01Q1/48H01Q1/50
CPCH01Q1/36H01Q1/38H01Q1/50H01Q1/48
Inventor 陈建新张小珂王雪颖唐世昌杨永杰
Owner NANTONG UNIVERSITY