Miniaturized low-profile UWB array antenna

Abstract

The utility model discloses a miniaturized low-profile UWB array antenna, which comprises a substrate, a main radiation plate and three radiation patches, the main radiation plate is arranged on the top of the substrate and connected with the substrate, and the radiation patches are attached to the main radiation plate. The radiation patch is a square patch, two triangular grooves are symmetrically formed in two opposite corners of the radiation patch, the parasitic patch is connected to the side face of the radiation patch, and the gain of the antenna can be improved by arranging the triangular grooves and the parasitic patch.

Description

Technical Field

[0001] The utility model relates to the field of antennas, and in particular to a miniaturized low-profile UWB array antenna. Background Art

[0002] With the rapid development of wireless communication technology, the penetration rate of various terminal devices in daily life has increased rapidly, and people's requirements for mobile communication devices are increasingly tending towards miniaturization and low profile. Therefore, designing low-profile and high-performance antennas has become one of the current research focuses. In pursuit of strong anti-interference ability, wider directional robustness and polarization matching requirements, indoor positioning antennas need to have characteristics such as low profile, strong adaptability and small size. At the same time, its performance such as bandwidth and gain must also meet certain standards to better meet user needs.

[0003] With the rapid development of wireless communication technology, the penetration rate of various terminal devices in daily life has increased rapidly, and people's requirements for mobile communication devices are increasingly tending towards miniaturization and low profile. Therefore, designing low-profile and high-performance antennas has become one of the current research focuses. In pursuit of strong anti-interference ability, wider directional robustness and polarization matching requirements, indoor positioning antennas need to have characteristics such as low profile, strong adaptability and small size. At the same time, its performance such as bandwidth and gain must also meet certain standards to better meet user needs. Utility Model Content

[0004] The main purpose of the utility model is to provide a miniaturized low-profile UWB array antenna which can effectively cover 7.75-8.25 GHz and has the characteristics of easy production and light weight.

[0005] The utility model proposes a miniaturized low-profile UWB array antenna, comprising a substrate, a main radiation board and three radiation patches, wherein the main radiation board is arranged on the top of the substrate and connected to the substrate, and the radiation patches are arranged on the main radiation board in affixed manner;

[0006] The radiation patch is a square patch, and two triangular grooves are symmetrically arranged on two opposite corners of the radiation patch. A parasitic patch is connected to the side of the radiation patch. The gain of the antenna can be improved by arranging the triangular grooves and the parasitic patches.

[0007] Preferably, a short-circuit column is further included, and two ends of the short-circuit column are respectively connected to the substrate and the main radiation board.

[0008] Preferably, the parasitic patches are respectively connected and arranged on the front and rear sides of the square patch.

[0009] Preferably, the length and width of the parasitic patches on two sides of the same square patch are not equal.

[0010] The beneficial effects of the miniaturized low-profile UWB array antenna of the utility model are:

[0011] By providing a radiation patch with symmetrical triangular grooves on the main radiation plate, the influence of a too small substrate on the overall parameters can be overcome, and the overall antenna size can be reduced without increasing the thickness, and the requirements of the existing design can be met.

[0012] By providing the short-circuit column, the current length can be increased, so that the required resonant frequency can be achieved, thereby improving the radiation efficiency.

[0013] By setting parasitic patches on both sides of the radiation patch, the effective radiation area can be expanded and the gain of the antenna can be increased, which is beneficial to improving the positioning accuracy and system performance of the antenna, enhancing the antenna's ability to receive and send signals, thereby improving the performance and reliability of the positioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A top view of the miniaturized low-profile UWB array antenna of the utility model;

[0015] Figure 2 It is a front view of the miniaturized low-profile UWB array antenna of the utility model;

[0016] Figure 3 It is a graph showing the variation of the standing wave ratio of the three ports of the miniaturized low-profile UWB array antenna of the utility model in the center frequency band;

[0017] Figure 4 It is a graph showing the peak gain variation of port 1 of the miniaturized low-profile UWB array antenna of the utility model in the center frequency band;

[0018] Figure 5 It is a diagram showing the isolation variation among the three ports of the miniaturized low-profile UWB array antenna of the utility model in the center frequency band;

[0019] Figure 6 It is a gain variation diagram of the miniaturized low-profile UWB array antenna of the utility model in the E plane and the H plane of the center frequency band;

[0020] Numbers in the figure: 1, substrate, 2, main radiation board, 3, radiation patch, 4, parasitic patch, 5, short-circuit column, 31, triangular groove.

[0021] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Reference Figures 1 to 6 , an embodiment of a miniaturized low-profile UWB array antenna of the utility model is proposed:

[0024] A miniaturized low-profile UWB array antenna comprises a substrate 1, a short-circuit post 5, a main radiation plate 2 and three radiation patches 3.

[0025] The main radiation board 2 is arranged on the top of the substrate 1 and the four legs of the main radiation board 2 are connected to the substrate 1. The short-circuit column 5 is arranged between the substrate 1 and the main radiation board 2, and the two ends of the short-circuit column 5 are respectively connected to the substrate 1 and the main radiation board 2. A ground plane structure is arranged at the bottom of the substrate 1.

[0026] The radiation patch 3 is a square patch, and the radiation patch 3 is attached to the main radiation board 2. Two symmetrically arranged triangular grooves 31 are symmetrically arranged at two opposite corners of the radiation patch 3. The front side and the rear side of the radiation patch 3 are respectively connected with the parasitic patch 4, and the parasitic patch 4 and the radiation patch 3 are integrally formed. The length and width of the parasitic patches 4 on both sides of the same radiation slice 3 are not equal, wherein the radiation patches 3 on both sides have the same shape and the connected parasitic patches 4 also have the same shape.

[0027] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A miniaturized low-profile UWB array antenna, characterized in that: It includes a substrate, a main radiation plate and three radiation patches, wherein the main radiation plate is arranged on the top of the substrate and connected to the substrate, and the radiation patches are attached to the main radiation plate; The radiation patch is a square patch, and two triangular grooves are symmetrically arranged on two opposite corners of the radiation patch. A parasitic patch is connected to the side of the radiation patch. The gain of the antenna can be improved by arranging the triangular grooves and the parasitic patches.

2. The miniaturized low-profile UWB array antenna according to claim 1, characterized in that: It also includes a short-circuit column, two ends of which are respectively connected to the substrate and the main radiation board.

3. The miniaturized low-profile UWB array antenna according to claim 1, characterized in that: The parasitic patches are respectively connected and arranged on the front and rear sides of the square patch.

4. The miniaturized low-profile UWB array antenna according to claim 3, characterized in that: The length and width of the parasitic patches on two sides of the same square patch are not equal.

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