Full-wave oscillator unit and antenna
By designing a full-wave dipole element, employing cross-polarization and a U-shaped balun structure, the problem of low gain in half-wave dipoles was solved, achieving a high-gain, wide-bandwidth, and low-cost antenna design, thus improving production efficiency and performance.
Patent Information
- Application Number
- CN202520419718.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing half-wave dipole antennas have low gain, resulting in short coverage distances. Solutions that increase the number of elements or increase complexity and cost are not ideal.
A full-wave dipole unit is designed, which adopts a base plate, dipole support and antenna radiating dipole. The antenna radiating dipole is cross-shaped and dual-polarized. Combined with L-shaped grounding component and coaxial line feeding, a U-shaped balun structure is formed to achieve high gain and wide bandwidth.
It achieves high-gain, low-cost antenna design with wide coverage, 0.5-1dB gain improvement, good beam convergence, high cross-polarization discrimination, excellent isolation, and high production efficiency.
Smart Images
Figure CN223941997U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a vibrator unit, specifically a full-wave vibrator unit and antenna. Background Technology
[0002] With the development of mobile communication networks, antennas have become increasingly important in the entire network system. The quality of antenna specifications directly determines the quality of the network signal, including key antenna parameters such as frequency band, bandwidth, gain, isolation, cross-polarization, and sidelobe suppression. Base station antennas have evolved from omnidirectional to directional, from single-polarization to dual / multi-polarization, from narrow-band to multi-band, and from fixed tilt to electrically adjustable tilt. The radiating element is the basic unit of a base station antenna, and its performance determines the overall performance of the antenna array. Therefore, ensuring high performance of the radiating element is a crucial first step in designing a base station antenna.
[0003] There are many types of radiating elements for base station antennas. Among them, the half-wave dipole is the most widely used due to its simple structure, easy impedance matching, and relatively wide bandwidth. However, this element also has its drawbacks; the half-wave dipole has relatively low gain. Gain refers to the efficiency of an antenna in transmitting signals in a specific direction. Lower gain typically means a relatively weaker signal transmission capability and a shorter coverage distance. While gain can be increased by adding more elements or using other techniques, this inevitably increases system complexity and product cost. Therefore, there is a need to find a dual-polarized antenna element design with ultra-wideband, high-gain, and high-performance characteristics. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide a full-wave oscillator unit to solve the problems existing in the background art.
[0005] The full-wave dipole unit of this utility model is achieved through the following technical solution, including a base plate, dipole support and antenna radiating dipole;
[0006] The antenna radiating element is arranged on the front of the base plate, and the antenna radiating element is arranged parallel to the base plate vertically and supported by the radiating element support on the base plate.
[0007] The two arms of the antenna radiating element in the 45° and -45° directions form a cross-shaped dual-polarized radiating unit.
[0008] As a preferred technical solution, the antenna radiating element includes an element arm, a PCB substrate, and a grounding layer; the element arm is disposed on the front side of the PCB substrate; the grounding layer is disposed on the back side of the PCB substrate; the element arm and the grounding layer are directly connected by a countersunk hole process, which facilitates power feeding and soldering.
[0009] As a preferred technical solution, the plane of the vibrator arm is hollowed out in the shape of a Y-shaped slot, and the top of the vibrator arm is notched to form a power supply bridge; the power supply bridge is connected to the vibrator arm, and the connection part is hollowed out in the shape of a T-shaped slot.
[0010] As a preferred technical solution, an L-shaped grounding component is provided below the antenna radiating element, and the antenna radiating element is fed through a coaxial line.
[0011] As a preferred technical solution, the L-shaped grounding component of the antenna radiating element is connected to the outer conductor of the coaxial line to form a U-shaped balun structure; the two coaxial lines respectively supply power to the two polarizations; the grounding component is connected to one end of the radiating element arm of the antenna radiating element, and the other end of the radiating element arm is connected to the outer conductor of the coaxial line; the inner conductor of the coaxial line is connected to the feed bridge.
[0012] An antenna includes a full-wave dipole element; the array of multiple full-wave dipole elements realizes a high-gain antenna.
[0013] The beneficial effects of this utility model are:
[0014] This utility model antenna features high gain, low cost, and simple structure; the antenna mainly covers a wide operating frequency band of 698MHz-960MHz, with a relative bandwidth of 32%; the single element achieves a radiation gain of 9-10dB; the multi-element array antenna achieves wide bandwidth and high gain performance; the dimensional consistency is improved through printed circuit board processing; the assembly structure is simple, improving production efficiency. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the exploded structure of this utility model;
[0018] Figure 3 and Figure 4 This is a schematic diagram of the antenna radiating element structure of this utility model. Detailed Implementation
[0019] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.
[0020] Since a half-wave dipole is a classic unit type, each arm is a quarter wavelength long. A dipole whose total length is equal to its wavelength is called a full-wave dipole. The radiation characteristics of a full-wave dipole can be understood as the superposition of the radiation patterns of two half-wave dipoles, resulting in a narrower beam, stronger directivity, and more concentrated energy. Therefore, a full-wave dipole exhibits enhanced beam convergence and higher gain.
[0021] like Figures 1-4 As shown, a full-wave dipole unit of this utility model includes a base plate 1, a dipole support 2, and an antenna radiating dipole.
[0022] The antenna radiating element is arranged on the front of the base plate 1. The antenna radiating element is arranged parallel to the base plate 1 vertically and is supported by the radiating element support 2 on the base plate 1.
[0023] The two arms 3 of the antenna radiating element in the 45° and -45° directions form a cross-shaped dual-polarized radiating unit.
[0024] The antenna radiating element includes an element arm 3, a PCB substrate 4, and a ground layer 5. The element arm 3 is located on the front side of the PCB substrate 4, and the ground layer 5 is located on the back side of the PCB substrate 4. The element arm 3 and the ground layer 5 are directly connected by a countersunk hole process, which facilitates power feeding and soldering.
[0025] The vibrator arm 3 has a Y-shaped slot cut out in its plane, and a notch is opened at the top of the vibrator arm 3 to form a power supply bridge; the power supply bridge is connected to the vibrator arm 3, and the connection part has a T-shaped slot; the T-shaped slot of the vibrator arm 3 is to meet the electrical size and impedance requirements.
[0026] In addition, an L-shaped grounding element 6 is provided below the antenna radiating element, and the antenna radiating element is fed through a coaxial line 7.
[0027] The L-shaped grounding component 6 of the antenna radiating element is connected to the outer conductor of the coaxial line to form a U-shaped balun structure; the two coaxial lines are respectively fed to the two polarizations; the grounding component 6 is connected to one end of the vibrator arm 3 of the antenna radiating element, and the other end of the vibrator arm 3 is connected to the outer conductor of the coaxial line; the inner conductor of the coaxial line is connected to the feed bridge.
[0028] An antenna includes a full-wave dipole element; the array of multiple full-wave dipole elements realizes a high-gain antenna; the array of multiple full-wave dipole elements achieves wide bandwidth and high-gain performance; the dimensional consistency is improved by using printed circuit board processing, its assembly structure is simple, and production efficiency is improved.
[0029] The full-wave dipole unit of this invention has a gain 0.5-1 dB higher than the commonly used half-wave dipole unit; it has better beamwidth convergence, higher cross-polarization discrimination, and better isolation performance.
[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.
Claims
1. A full-wave oscillator unit, characterized in that, It includes a base plate (1), a vibrator support (2), and an antenna radiating vibrator; The antenna radiating element is arranged on the front of the base plate (1), and the antenna radiating element is arranged parallel to the base plate (1) vertically and is supported by the radiating element support (2) on the base plate (1); The two arms (3) of the antenna radiating element in the 45° and -45° directions constitute a cross-shaped dual-polarized radiating unit.
2. The full-wave oscillator unit according to claim 1, characterized in that: The antenna radiating element includes an radiating arm (3), a PCB substrate (4), and a grounding layer (5); the radiating arm (3) is disposed on the front side of the PCB substrate (4); the grounding layer (5) is disposed on the back side of the PCB substrate (4); the radiating arm (3) and the grounding layer (5) are directly connected by a countersunk hole process, which facilitates power feeding and soldering.
3. The full-wave oscillator unit according to claim 2, characterized in that: The vibrator arm (3) has a Y-shaped slot cut out in the plane, and the top of the vibrator arm (3) has a notch to form a power supply bridge; the power supply bridge is connected to the vibrator arm (3), and the connection part has a T-shaped slot.
4. The full-wave oscillator unit according to claim 1, characterized in that: An L-shaped grounding element (6) is provided below the antenna radiating element, and the antenna radiating element is fed through a coaxial line (7).
5. The full-wave oscillator unit according to claim 1, characterized in that: The L-shaped grounding component (6) of the antenna radiating element is connected to the outer conductor of the coaxial line (7) to form a U-shaped balun structure; the two coaxial lines are respectively fed to the two polarizations; the grounding component (6) is connected to one end of the vibrator arm (3) of the antenna radiating element, and the other end of the vibrator arm (3) is connected to the outer conductor of the coaxial line (7); the inner conductor of the coaxial line (7) is connected to the feed bridge.
6. An antenna, characterized in that: It includes the full-wave dipole element as described in any one of claims 1 to 5, and the combination of full-wave dipole elements realizes a high-gain antenna.