A wide-beam dipole antenna

Abstract

The utility model discloses a wide beam dipole antenna, include: substrate, set up on the antenna of substrate, the antenna includes the main transmission feed point, main transmission impedance matching balun, first main radiation folded oscillator arm and second main radiation folded oscillator arm, third main radiation folded oscillator arm and fourth main radiation folded oscillator arm, first main radiation oscillator arm parasitic branch and second main radiation oscillator arm parasitic branch, third main radiation oscillator arm parasitic branch and fourth main radiation oscillator arm parasitic branch that connect gradually, the main transmission feed point and main transmission impedance matching balun head -tail connection, first main radiation folded oscillator arm and main radiation second folded oscillator arm are connected with main transmission impedance matching balun respectively, and arrange in main transmission impedance matching balun both sides, the head of third main radiation folded oscillator arm is connected with the tail of first main radiation folded oscillator arm, and one end of first main radiation oscillator arm parasitic branch is connected with the middle part of third main radiation folded oscillator arm.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, and in particular to a wide-beam dipole antenna. Background Technology

[0002] Existing microwave sensing modules commonly use printed dipole antennas for applications such as lighting control. However, existing technology has the following problems: The antenna is relatively high, and when installed inside a light fixture, it can easily create a shadow area, affecting low-elevation angle detection.

[0003] It has low gain, scattered energy distribution, and insufficient detection range and anti-interference capability.

[0004] The main and secondary dual-antenna structure is complex to feed, requires multiple slots on the PCB, and results in poor consistency in mass production.

[0005] The fixing method relies solely on welding, without mechanical assistance, making it susceptible to vibration.

[0006] The applicant's Chinese utility model patent CN218160809U discloses a wide-beam dipole antenna and a microwave induction module. The module is characterized by comprising a substrate, a symmetrically distributed main antenna, and a secondary antenna. The main antenna and secondary antenna each include a feed point, a symmetrical balun, an impedance matching balun, a first folded dipole arm, a second folded dipole arm, a parasitic stub of the first dipole arm, and a parasitic stub of the second dipole arm, connected sequentially. The feed point protrudes 1-3 mm from the outer side of the substrate and has a semi-circular slot. The symmetrical balun includes a square portion and an isosceles triangular portion. A slot is formed on the PCB motherboard for the feed point to pass through, and the wide-beam dipole antenna is vertically mounted on the top layer of the PCB motherboard. While this application can improve product consistency, it still suffers from problems such as high antenna height, low gain, complex dual-feeding, and unstable mounting.

[0007] Therefore, further improvements are needed to meet the requirements of lighting applications. Utility Model Content

[0008] To address the problems existing in the prior art, this utility model provides a wide-beam dipole antenna.

[0009] To achieve the above objectives, the technical solution of this utility model is as follows: This utility model provides a wide-beam dipole antenna, comprising: a substrate, an antenna disposed on the substrate, the antenna comprising a main transmission feed point, a main transmission impedance matching balun, a first main radiating folded dipole arm and a second main radiating folded dipole arm, a third main radiating folded dipole arm and a fourth main radiating folded dipole arm, a parasitic branch of the first main radiating dipole arm and a parasitic branch of the second main radiating dipole arm, and a parasitic branch of the third main radiating dipole arm and a parasitic branch of the fourth main radiating dipole arm connected in sequence; The main transmission feed point is connected end-to-end with the main transmission impedance matching balun; the first main radiation folded vibrator arm and the second main radiation folded vibrator arm are respectively connected to the main transmission impedance matching balun and arranged on both sides of the main transmission impedance matching balun. The head of the third main radiating folding vibrating arm is connected to the tail of the first main radiating folding vibrating arm, one end of the parasitic branch of the first main radiating vibrating arm is connected to the middle of the third main radiating folding vibrating arm, and the tail end of the parasitic branch of the third main radiating vibrating arm is connected to the head end of the parasitic branch of the first main radiating vibrating arm. The head of the fourth main radiating folding vibrating arm is connected to the tail of the second main radiating folding vibrating arm, one end of the parasitic branch of the second main radiating vibrating arm is connected to the middle of the fourth main radiating folding vibrating arm, and the tail end of the parasitic branch of the fourth main radiating vibrating arm is connected to the head end of the parasitic branch of the second main radiating vibrating arm. The substrate also has two antenna half-hole fixing points at its bottom, which are arranged on both sides of the main transmission feed point.

[0010] Preferably, the first main radiating folding dipole arm, the second main radiating folding dipole arm, the third main radiating folding dipole arm, the fourth main radiating folding dipole arm, the parasitic branch of the first main radiating dipole arm, the parasitic branch of the second main radiating dipole arm, the parasitic branch of the third main radiating dipole arm, the parasitic branch of the fourth main radiating dipole arm, and the fixing point of the two antenna half-apertures are all symmetrically arranged with the main transmission impedance matching balun as the axis.

[0011] Preferably, the main transmission feed point and the main transmission impedance matching balun are arranged sequentially along the first direction, and the main transmission feed point protrudes to the outside of the substrate.

[0012] Preferably, the first main radiating folded dipole arm is arranged perpendicular to the main transmission impedance matching balun along the second direction, the third main radiating folded dipole arm is arranged perpendicular to the first main radiating folded dipole arm along the opposite direction of the first direction, the parasitic branches of the first main radiating dipole arm are arranged perpendicular to the third main radiating folded dipole arm along the opposite direction of the second direction, and the parasitic branches of the third main radiating dipole arm are arranged perpendicular to the parasitic branches of the first main radiating dipole arm along the opposite direction of the first direction.

[0013] Preferably, the second main radiating folded dipole arm is arranged perpendicular to the main transmission impedance matching balun along the second direction, the fourth main radiating folded dipole arm is arranged perpendicular to the second main radiating folded dipole arm along the opposite direction of the first direction, the parasitic branches of the second main radiating dipole arm are arranged perpendicular to the fourth main radiating folded dipole arm along the opposite direction of the second direction, and the parasitic branches of the fourth main radiating dipole arm are arranged perpendicular to the parasitic branches of the second main radiating dipole arm along the opposite direction of the first direction.

[0014] Preferably, the substrate has a thickness of 1.0 mm and a dielectric constant of 4.0-4.6.

[0015] The technical solution of this utility model has the following beneficial effects: This invention reduces the antenna height to 9mm by folding the vibrating arm and the parasitic branches in a compact arrangement, thereby reducing the shadow area inside the lamp and maintaining a detection distance of ≥6.2m.

[0016] Employing dual parasitic stubs for synergistic radiation, the gain reaches 6.73 dBi, which is 143.2% higher than the applicant's previously filed novel patent CN218160809U. The energy is concentrated forward, resulting in stronger coverage and better anti-interference capabilities.

[0017] This invention adopts single-ended feeding, eliminates the main and auxiliary antenna structure, reduces PCB slots, simplifies the structure, and improves mass production yield.

[0018] This invention adds two half-hole fixing points to the bottom of the substrate to improve installation stability. The substrate thickness is fixed at 1.0mm and the dielectric constant is 4.0~4.6, ensuring that the resonant frequency is stable at 5.80GHz ±50MHz, the return loss is ≤-22dB, and the performance consistency is good. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this utility model, unless otherwise expressly specified and limited, the first feature is "on" or "on" the second feature. The term "below" can include situations where the first and second features are in direct contact, or situations where the first and second features are in contact through another feature between them. Furthermore, "above," "over," and "on top" of the first feature above the second feature includes situations where the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the first feature below the second feature includes situations where the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] Reference Figure 1 This utility model provides a wide-beam dipole antenna, comprising: a substrate 28, and an antenna disposed on the substrate 28. The antenna includes a main transmission feed point 21, a main transmission impedance matching balun 22, a first main radiating folded dipole arm 23 and a second main radiating folded dipole arm 230, a third main radiating folded dipole arm 24 and a fourth main radiating folded dipole arm 240, a parasitic branch 26 of the first main radiating dipole arm and a parasitic branch 260 of the second main radiating dipole arm, and a parasitic branch 25 of the third main radiating dipole arm and a parasitic branch 250 of the fourth main radiating dipole arm, connected in sequence. The main transmission feed point is connected end-to-end with the main transmission impedance matching balun; the first main radiation folded vibrator arm 23 and the main radiation second folded vibrator arm 230 are respectively connected to the main transmission impedance matching balun and arranged on both sides of the main transmission impedance matching balun. The head of the third main radiating folding vibrating arm 24 is connected to the tail of the first main radiating folding vibrating arm 23, one end of the parasitic branch 26 of the first main radiating vibrating arm is connected to the middle of the third main radiating folding vibrating arm 24, and the tail end of the parasitic branch 25 of the third main radiating vibrating arm is connected to the head end of the parasitic branch 26 of the first main radiating vibrating arm. The head of the fourth main radiating folding vibrating arm 240 is connected to the tail of the second main radiating folding vibrating arm 230, one end of the parasitic branch 260 of the second main radiating vibrating arm is connected to the middle of the fourth main radiating folding vibrating arm 240, and the tail end of the parasitic branch 250 of the fourth main radiating vibrating arm is connected to the head end of the parasitic branch 260 of the second main radiating vibrating arm. The substrate 28 also has two antenna half-hole fixing points 27 at its bottom, which are arranged on both sides of the main transmission feed point 21.

[0026] Furthermore, the first main radiating folding dipole arm 23 and the second main radiating folding dipole arm 230, the third main radiating folding dipole arm 24 and the fourth main radiating folding dipole arm 240, the parasitic branch 26 of the first main radiating dipole arm and the parasitic branch 260 of the second main radiating dipole arm, the parasitic branch 25 of the third main radiating dipole arm and the parasitic branch 250 of the fourth main radiating dipole arm, and the fixing point of the two antenna half-apertures are all symmetrically arranged with the main transmission impedance matching balun 22 as the axis.

[0027] Furthermore, the main transmission feed point 21 and the main transmission impedance matching balun 22 are arranged sequentially along the first direction, and the main transmission feed point 21 protrudes to the outside of the substrate 28.

[0028] Furthermore, the first main radiating folded oscillator arm 23 is arranged perpendicular to the main transmission impedance matching balun 22 along the second direction. The third main radiating folding vibrator arm 24 is arranged perpendicular to the first main radiating folding vibrator arm 23 in the opposite direction to the first direction, the parasitic branch 26 of the first main radiating vibrator arm is arranged perpendicular to the third main radiating folding vibrator arm 24 in the opposite direction to the second direction, and the parasitic branch 25 of the third main radiating vibrator arm is arranged perpendicular to the parasitic branch 26 of the first main radiating vibrator arm in the opposite direction to the first direction.

[0029] Furthermore, the second main radiating folded oscillator arm 230 is arranged perpendicular to the main transmission impedance matching balun 22 along the second direction. The fourth main radiating folding vibrator arm 240 is arranged perpendicular to the second main radiating folding vibrator arm 230 in the opposite direction to the first direction, the parasitic branch 260 of the second main radiating vibrator arm is arranged perpendicular to the fourth main radiating folding vibrator arm 240 in the opposite direction to the second direction, and the parasitic branch 250 of the fourth main radiating vibrator arm is arranged perpendicular to the parasitic branch 260 of the second main radiating vibrator arm in the opposite direction to the first direction.

[0030] Furthermore, the substrate has a thickness of 1.0 mm and a dielectric constant of 4.0-4.6.

[0031] In this embodiment, the present invention can be used in conjunction with a microwave induction module. The specific design of the microwave induction module is the same as that of the Chinese utility model patent CN218160809U that the applicant has already applied for and been granted, and the applicant will not repeat it here.

[0032] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A wide-beam dipole antenna, characterized in that, include: Substrate (28), antenna disposed on substrate (28), the antenna comprising a main transmission feed point (21), a main transmission impedance matching balun (22), a first main radiating folded dipole arm (23) and a second main radiating folded dipole arm (230), a third main radiating folded dipole arm (24) and a fourth main radiating folded dipole arm (240), a parasitic branch of the first main radiating dipole arm (26) and a parasitic branch of the second main radiating dipole arm (260), a parasitic branch of the third main radiating dipole arm (25) and a parasitic branch of the fourth main radiating dipole arm (250) connected in sequence; The main transmission feed point (21) is connected end-to-end with the main transmission impedance matching balun (22); The first main radiating folding oscillator arm (23) and the second main radiating folding oscillator arm (230) are respectively connected to the main transmission impedance matching balun (22) and arranged on both sides of the main transmission impedance matching balun (22); The head of the third main radiating folding vibrating arm (24) is connected to the tail of the first main radiating folding vibrating arm (23), one end of the parasitic branch (26) of the first main radiating vibrating arm is connected to the middle of the third main radiating folding vibrating arm (24), and the tail end of the parasitic branch (25) of the third main radiating vibrating arm is connected to the head end of the parasitic branch (26) of the first main radiating vibrating arm. The head of the fourth main radiating folding dipole arm (240) is connected to the tail of the second main radiating folding dipole arm (230). One end of the parasitic branch (260) of the second main radiating dipole arm is connected to the middle of the fourth main radiating folding dipole arm (240). The tail end of the parasitic branch (250) of the fourth main radiating dipole arm is connected to the head end of the parasitic branch (260) of the second main radiating dipole arm. Two antenna half-hole fixing points (27) are also provided at the bottom of the substrate (28). The two antenna half-hole fixing points (27) are arranged on both sides of the main transmission feed point (21).

2. The wide-beam dipole antenna according to claim 1, characterized in that, The first main radiating folding dipole arm (23) and the second main radiating folding dipole arm (230), the third main radiating folding dipole arm (24) and the fourth main radiating folding dipole arm (240), the parasitic branch of the first main radiating dipole arm (26) and the parasitic branch of the second main radiating dipole arm (260), the parasitic branch of the third main radiating dipole arm (25) and the parasitic branch of the fourth main radiating dipole arm (250), and the two antenna half-aperture fixing points (27) are all symmetrically arranged with the main transmission impedance matching balun (22) as the axis.

3. The wide-beam dipole antenna according to claim 1, characterized in that, The main transmission feed point (21) and the main transmission impedance matching balun (22) are arranged sequentially along the first direction, with the main transmission feed point (21) protruding to the outside of the substrate (28).

4. The wide-beam dipole antenna according to claim 1, characterized in that, The first main radiating folded oscillator arm (23) is arranged perpendicular to the main transmission impedance matching balun (22) along the second direction. The third main radiating folded oscillator arm (24) is arranged perpendicular to the first main radiating folded oscillator arm (23) along the opposite direction of the first direction. The parasitic branch (26) of the first main radiating oscillator arm is arranged perpendicular to the third main radiating folded oscillator arm (24) along the opposite direction of the second direction. The parasitic branch (25) of the third main radiating oscillator arm is arranged perpendicular to the parasitic branch (26) of the first main radiating oscillator arm along the opposite direction of the first direction.

5. The wide-beam dipole antenna according to claim 1, characterized in that, The second main radiating folded dipole arm (230) is arranged perpendicular to the main transmission impedance matching balun (22) along the second direction. The fourth main radiating folded dipole arm (240) is arranged perpendicular to the second main radiating folded dipole arm (230) along the opposite direction of the first direction. The parasitic branch (260) of the second main radiating dipole arm is arranged perpendicular to the fourth main radiating folded dipole arm (240) along the opposite direction of the second direction. The parasitic branch (250) of the fourth main radiating dipole arm is arranged perpendicular to the parasitic branch (260) of the second main radiating dipole arm along the opposite direction of the first direction.

6. The wide-beam dipole antenna according to claim 1, characterized in that, The substrate (28) has a thickness of 1.0 mm and a dielectric constant of 4.0 to 4.6.

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