Simple dual-frequency antenna

Abstract

The utility model relates to the technical field of antennas, and discloses a simple dual-frequency antenna, which comprises an antenna reflector, four feed probes are fixedly arranged at the center of the upper end surface of the antenna reflector, antenna radiators are arranged at the upper ends of the outer walls of the four feed probes, each antenna radiator comprises a four-arm helical antenna, and the four-arm helical antennas are arranged in parallel. A feed network is arranged in the antenna reflector, and antenna frequency modulation branches are fixedly arranged at the front end and the rear end of the two sides of the upper end face of the antenna reflector. According to the utility model, the overall structure is simple and novel, and the antenna has the characteristics of miniaturization and wide frequency band without reducing the antenna performance.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, and in particular to a simple dual-frequency antenna. Background Technology

[0002] A high-precision GNSS antenna is a precision device specifically designed to receive and process satellite navigation signals. Its core objective is to significantly improve the accuracy of positioning, navigation, and timing by optimizing signal reception quality. In today's navigation and positioning field, high-precision GNSS antennas play a crucial role, and their design and technological investment directly determine the reliability and accuracy ceiling of the final system.

[0003] In the process of developing this application, the inventors discovered the following problems with the prior art:

[0004] Traditional high-precision GNSS antennas often employ multi-layer designs. The complex structure makes the antenna production process cumbersome and the cost high. Planar antennas are gradually replacing traditional multi-layer dielectric designs. However, in order to ensure the high precision performance of the antenna, some special high-performance and expensive materials are usually selected, such as specific metals or dielectric materials. These materials account for a large proportion of the cost. At the same time, in terms of manufacturing process, high-precision GNSS antennas often require high-precision processing equipment and fine manufacturing processes, which undoubtedly further increases the production cost.

[0005] Therefore, those skilled in the art have provided a simplified dual-band antenna to solve the problems mentioned in the background art. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a simple dual-band antenna with a simple and novel overall structure. It features miniaturization and wide bandwidth without compromising antenna performance.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A simple dual-band antenna includes an antenna reflector. Four feed probes are fixedly arranged at the center of the upper surface of the antenna reflector. An antenna radiator is arranged at the upper end of the outer wall of each of the four feed probes. Each of the four antenna radiators includes a four-arm helical antenna. A feed network is arranged inside the antenna reflector. Antenna frequency modulation branches are fixedly arranged at both ends of the upper surface of the antenna reflector.

[0009] Furthermore, the antenna radiator has a centrally symmetrical structure, and the end of the four-armed spiral antenna is fixedly connected to the inner side of the outer ring antenna.

[0010] Furthermore, all four frequency-modulated antenna sections are located on the same vertical line as the outer ring antenna, the upper ends of all four frequency-modulated antenna sections are fixedly connected to the outer ring antenna, and the lower ends of all four frequency-modulated antenna sections are coupled to the antenna reflector.

[0011] Furthermore, the antenna radiator is made of a single layer of metal, the four-arm spiral antenna corresponds to high-frequency radiation, and the outer ring antenna and multiple antenna frequency-modulated branches correspond to low-frequency radiation.

[0012] This utility model has the following beneficial effects:

[0013] This invention proposes a simplified dual-band antenna that, without compromising antenna performance, achieves broadband and miniaturization using a single-layer dielectric through innovative antenna radiation and feeding, reducing antenna weight. Furthermore, the antenna structure is simple, suitable for industrial production, saves production costs, and is easy to promote. Attached Figure Description

[0014] Figure 1 This is an overall isometric schematic diagram of the present invention;

[0015] Figure 2 This is a simulation result diagram of the low-frequency direction of this utility model;

[0016] Figure 3 This is a simulation result diagram of the high-frequency direction of this utility model.

[0017] Legend:

[0018] 1. Antenna radiator; 2. Antenna reflector; 3. Feed probe; 4. Antenna frequency modulation stub; 101. Four-arm helical antenna; 102. Outer loop antenna. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figures 1 to 3 One embodiment provided by this utility model:

[0021] A simple dual-band antenna includes an antenna reflector 2. Four feed probes 3 are fixedly installed at the center of the upper surface of the antenna reflector 2. An antenna radiator 1 is installed on the upper part of the outer wall of each of the four feed probes 3. Each of the four antenna radiators 1 includes a four-arm helical antenna 101. A feed network is installed inside the antenna reflector 2. Antenna frequency modulation branches 4 are fixedly installed at both ends of the upper surface of the antenna reflector 2.

[0022] Specifically, the antenna frequency modulation branch 4 can optimize the overall impedance matching and frequency response of the antenna, thereby improving the signal reception performance. The feed probe 3 can use the feed network inside the antenna reflector 2 to feed the antenna radiator 1.

[0023] Reference Figure 1 The antenna radiator 1 has a centrally symmetrical structure, and the end of the four-arm spiral antenna 101 is fixedly connected to the inner side of the outer ring antenna 102.

[0024] Specifically, the centrally symmetric antenna radiator 1 achieves an optimal balance between radiation efficiency, anti-interference capability, and engineering reliability through the synergy of electromagnetic symmetry and mechanical symmetry.

[0025] Reference Figure 1 All four antenna frequency modulation branches 4 are located on the same vertical line as the outer ring antenna 102. The upper ends of all four antenna frequency modulation branches 4 are fixedly connected to the outer ring antenna 102, and the lower ends of all four antenna frequency modulation branches 4 are coupled to the antenna reflector 2.

[0026] Specifically, the antenna frequency modulation branch 4 provides support for the outer ring antenna 102 and optimizes the overall impedance matching and frequency response of the antenna.

[0027] Reference Figure 1 The antenna radiator 1 is made of a single layer of metal, the four-arm spiral antenna 101 corresponds to high frequency radiation, and the outer ring antenna 102 and multiple antenna frequency modulation branches 4 correspond to low frequency radiation.

[0028] Specifically, the single-layer metal antenna radiator 1 simplifies the structure and reduces costs, and also reduces the weight of the antenna. Meanwhile, the outer ring antenna 102 and the four-arm spiral antenna 101 can achieve full coverage of high and low frequencies.

[0029] Working principle: The single-layer metal antenna radiator 1 simplifies and lightens the overall structure of the device, reducing production costs. Through the synergistic effect of the antenna frequency modulation branch 4 and the outer ring antenna 102, the impedance matching and frequency response of the antenna can be optimized, enabling the miniaturization and wide bandwidth of the device without affecting the overall performance of the antenna. Furthermore, the outer ring antenna 102 and the four-arm spiral antenna 101 can achieve full coverage of high-frequency and low-frequency channels during use, improving the applicability of the device.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A simple dual-band antenna comprising an antenna reflector (2), characterized in that: The antenna reflector (2) is fixedly provided with four feed probes (3) at the center of the upper end surface, the outer wall of each of the four feed probes (3) is provided with an antenna radiator (1), each of the four antenna radiators (1) comprises a four-arm spiral antenna (101), the antenna reflector (2) is internally provided with a feed network, and the antenna reflector (2) is fixedly provided with antenna frequency modulation branches (4) at the front and rear ends of the two sides of the upper end surface.

2. The simple dual-band antenna according to claim 1, characterized in that: The antenna radiator (1) is a central symmetric structure, and the tail end of the four-arm spiral antenna (101) is fixedly connected to the inner side of the outer loop antenna (102).

3. The simple dual-band antenna according to claim 1, characterized in that: The four antenna frequency modulation branches (4) are located on the same vertical line as the outer loop antenna (102), the upper end of each of the four antenna frequency modulation branches (4) is fixedly connected to the outer loop antenna (102), and the lower end of each of the four antenna frequency modulation branches (4) is coupled to the antenna reflector (2).

4. The simple dual-band antenna according to claim 1, wherein: The antenna radiator (1) is made of single-layer metal material, the four-arm spiral antenna (101) corresponds to high-frequency radiation, and the outer loop antenna (102) and the plurality of antenna frequency modulation branches (4) correspond to low-frequency radiation.

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