Differential feed structure, antenna and communication equipment
By adopting a combination of differential feed structure and air microstrip in the antenna of the communication device, the problem of increased dielectric substrate loss under 5G technology is solved, and the gain of the antenna and the performance of the communication device are improved.
Patent Information
- Application Number
- CN202311633769.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-30
- Publication Date
- 2025-05-30
AI Technical Summary
With the development of 5G technology, the wireless frequency of communication equipment gradually increases, resulting in an increase in the loss of the dielectric substrate, seriously affecting the gain of the antenna, and thus affecting the performance of communication equipment.
A differential feed structure is adopted, including two sub-differential feed structures, a plurality of coupled feed structures, and a metal plate and a dielectric plate arranged in sequence from top to bottom. By forming an air microstrip on the second dielectric plate and metallized vias are provided on both sides of the microstrip to connect the metal plate to form a differential feed network with high isolation.
Through the combination of differential feed structure and air microstrip, the loss of the antenna is reduced, the gain of the antenna is improved, and the performance of the communication equipment is improved.
Smart Images
Figure CN120073307A_ABST
Abstract
Claims
1. A differential feeding structure, characterized in that, it includes two sub-differential feeding structures, a plurality of coupling feeding structures, and a first metal plate, a first dielectric plate, a second dielectric plate, a second metal plate, and a third dielectric plate arranged in sequence from top to bottom. The two sub-differential feeding structures include a first sub-differential feeding structure and a second sub-differential feeding structure, and each of the coupling feeding structures is connected to the first sub-differential feeding structure or the second sub-differential feeding structure; the first metal plate includes first through holes adapted to the two sub-differential feeding structures. The two sub-differential feeding structures are arranged in the first through holes and form a gap with the first metal plate; the second dielectric plate is provided with grooves at positions corresponding to the two sub-differential feeding structures, and a plurality of metallized vias are arranged on both sides of the grooves. Metal columns are arranged in the metallized vias to connect the first metal plate and the second metal plate.
2. The structure according to claim 1, characterized in that, the number of the coupling feeding structures is N, where N / 2 of the coupling feeding structures are vertically connected to the first sub-differential feeding structure, and the other N / 2 coupling feeding structures are vertically connected to the second sub-differential feeding structure, and N is an even number.
3. The structure according to claim 1, characterized in that, each of the coupling feeding structures is arranged on a corresponding fourth dielectric plate, and each of the fourth dielectric plates is provided with a first connecting portion for fixing the fourth dielectric plate.
4. The structure according to claim 1, characterized in that, the number N of the coupling feeding structures is four, and the shape of the coupling feeding structures is F-shaped.
5. The structure according to claim 3, characterized in that, the fourth dielectric plate is provided with a recessed portion at a position corresponding to the groove.
6. The structure according to any one of claims 1-5, characterized in that, the shape of the sub-differential feeding structure is a U-shaped, and the two sub-differential feeding structures are centrosymmetric about the center of the first metal plate.
7. An antenna, characterized in that, it includes a housing, the differential feeding structure according to any one of claims 1-6 arranged in the housing, two RF interfaces, and a radiation patch arranged on a fifth dielectric plate. The fifth dielectric plate is arranged parallel to the differential feeding structure above; the differential feeding structure is connected to the RF interface.
8. The antenna according to claim 7, characterized in that, each of the coupling feeding structures is arranged on a corresponding fourth dielectric plate, and each of the fourth dielectric plates further includes a second connecting portion for connecting and fixing to a third connecting portion on the fifth dielectric plate, so that the fifth dielectric plate is arranged parallel to the differential feeding structure above.
9. The antenna according to claim 7, characterized in that, The differential feeding structure includes two sub-differential feeding structures, and the two sub-differential feeding structures are respectively connected to the inner core of one of the RF interfaces through corresponding RF vias on the first dielectric plate, the second dielectric plate, the second metal plate, and the third dielectric plate. The second metal plate of the differential feeding structure is connected to the outer skin of the RF interface through the RF via on the third dielectric plate.
10. The antenna according to any one of claims 7-9, characterized in that a cross slot is etched on the radiation patch.
11. A communication device, characterized in that it includes the differential feeding structure according to any one of claims 1-6 or the antenna according to any one of claims 7-10.