High-gain omnidirectional antenna

Abstract

A high-gain omnidirectional antenna disclosed by the present invention comprises an antenna oscillator and an antenna ground, the antenna oscillator is composed of a main oscillator, a Z-shaped oscillator, a connecting column, a screw rod, an upper pole piece and a coaxial cable, the Z-shaped oscillator is fixedly installed between the main oscillator and the connecting column, the screw rod is in threaded connection with the bottom end of the connecting column, and the upper pole piece is connected with the coaxial cable. An upper pole piece is fixedly installed at the end of the screw rod and connected with a cable core of the coaxial cable, the antenna ground comprises a round iron cover, the top of the round iron cover is connected with a lower pole piece, the lower pole piece is connected with a shielding layer of the coaxial cable, and the upper pole piece is connected with the shielding layer of the coaxial cable. By adopting the main oscillator with the U-shaped cup-shaped structure, the bandwidth of the antenna can be increased, the signal receiving surface of the antenna can be increased, the antenna gain can be effectively increased, meanwhile, the antenna can have approximately ideal omnidirectivity, and a Z-shaped oscillator is arranged between the main oscillator and the connecting column, so that the main oscillator and the antenna ground form a coupling, and the antenna is more compact. Therefore, the standing wave VSWR of the antenna is adjusted, and the antenna has higher efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to a high-gain omnidirectional antenna. Background Art

[0002] With the development of mobile communication technology, the bandwidth required for mobile communications is increasing. To increase bandwidth, multiple frequency bands are being used. Due to the coverage requirements of mobile communications, high-gain antennas capable of covering multiple frequency bands are required. Traditional mobile communication antennas only have one antenna element per frequency band. Antennas that cover multiple frequency bands are composed of multiple antenna elements. However, to increase antenna gain, the coverage angle of a single antenna element is reduced, resulting in blind spots and the entire antenna failing to achieve omnidirectional coverage. However, mobile communications require omnidirectional coverage without blind spots. Therefore, current antennas cannot meet the multi-band omnidirectional coverage requirements of mobile communications. When an omnidirectional antenna is in use, the antenna element transmits the weak electromagnetic waves received from the air to the transceiver via a coaxial cable for processing. When the antenna is connected to a device, different operating environments significantly affect the antenna's signal reception. To achieve better signal reception, increasing antenna gain and efficiency within a given size is an urgent technical challenge. Summary of the Invention

[0003] The object of the present invention is to provide a high-gain omnidirectional antenna to solve the problems raised by the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: a high-gain omnidirectional antenna, comprising: an antenna element and an antenna ground, the antenna element consisting of a main element, a Z-shaped element, a connecting post, a screw, an upper pole piece, and a coaxial cable, the Z-shaped element being fixedly mounted between the main element and the connecting post, the screw being threadedly connected to the bottom end of the connecting post, an upper pole piece being fixedly mounted at the end of the screw, the upper pole piece being connected to the core of the coaxial cable, a conical spiral element being arranged inside the main element, a duplexer circuit board being embedded in the connecting post, the main element covering UHF, and the conical spiral element covering VHF;

[0005] The antenna ground comprises a round iron cover, the top of the round iron cover is connected to a lower pole piece, and the lower pole piece is connected to the shielding layer of the coaxial cable.

[0006] As a preferred solution of the present invention: the main vibrator includes a vibrator body with a U-shaped cup structure, the bottom of the vibrator body is integrally provided with a gradually inward-facing opening, the Z-shaped vibrator is fixedly installed at the bottom end of the opening, and the conical spiral vibrator is arranged in the vibrator body and the opening.

[0007] As a preferred solution of the present invention: the duplexer circuit board adopts an LTCC substrate, and the duplexer circuit board integrates a VHF / UHF independent LC matching network.

[0008] As a preferred solution of the present invention: the main vibrator, Z-shaped vibrator, connecting column, screw, upper pole piece and lower pole piece are all made of H62 brass and silver-plated on the surface, and the round iron cover is made of low-carbon steel and nickel-plated on the surface.

[0009] As a preferred solution of the present invention: a PTFE gasket is provided between the connecting column and the Z-shaped vibrator.

[0010] As a preferred solution of the present invention: the spiral vibrator is made of titanium alloy wire and the surface is silver-plated, and the spiral wire diameter of the spiral vibrator is Φ2mm.

[0011] Compared with the prior art, the beneficial effects of the present invention are: the main oscillator using a U-shaped cup structure can increase the bandwidth of the antenna and increase the antenna receiving signal surface, thereby effectively increasing the antenna gain, while enabling the antenna to have close to ideal omnidirectionality, and a Z-shaped oscillator is provided between the main oscillator and the connecting column, so that the main oscillator and the antenna form a coupling, which is used to adjust the antenna standing wave VSWR, thereby making the antenna more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention;

[0013] Figure 2 This is one of the test schematic diagrams of the present invention;

[0014] Figure 3 This is the second test schematic diagram of the present invention;

[0015] Figure 4 This is the third test schematic diagram of the present invention.

[0016] In the figure: 1. Antenna vibrator; 10. Main vibrator; 101. Vibrator body; 102. Closing; 20. Z-shaped vibrator; 30. Connecting column; 40. Screw; 51. Upper pole piece; 70. Coaxial cable; 2. Antenna ground; 52. Lower pole piece; 60. Round iron cover. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0019] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0021] See also Figure 1 - Figure 4 The present invention provides a technical solution: a high-gain omnidirectional antenna, comprising: an antenna element 1 and an antenna ground 2, wherein the antenna element 1 is composed of a main element 10, a Z-shaped element 20, a connecting post 30, a screw 40, an upper pole piece 51 and a coaxial cable 70, the Z-shaped element 20 is fixedly installed between the main element 10 and the connecting post 30, the screw 40 is threadedly connected to the bottom end of the connecting post 30, the upper pole piece 51 is fixedly installed at the end of the screw 40, and the upper pole piece 51 is connected to the core of the coaxial cable 70, a conical spiral element is arranged inside the main element 10, and a duplexer circuit board is embedded in the connecting post 30;

[0022] The antenna ground 2 includes a round iron cover 60 . The top of the round iron cover 60 is connected to a lower pole piece 52 . The lower pole piece 52 is connected to the shielding layer of the coaxial cable 70 .

[0023] In this embodiment, the main vibrator 10 includes a vibrator body 101 with a U-shaped cup structure. The bottom of the vibrator body 101 is integrally provided with a gradually inward-facing opening 102. The Z-shaped vibrator 20 is fixedly installed at the bottom end of the opening 102, and the conical spiral vibrator is arranged in the vibrator body 101 and the opening 102.

[0024] Specifically, the main oscillator 10 is set up to cover UHF, the conical spiral oscillator reduces the resonant frequency by loading a capacitor on the top, shortens the physical length to λ / 10, and the conical spiral oscillator can cover VHF, so that the antenna can receive or transmit very high frequency and ultra-high frequency band signals.

[0025] In this embodiment, the duplexer circuit board adopts an LTCC substrate, and the duplexer circuit board integrates a VHF / UHF independent LC matching network.

[0026] Specifically, the duplexer circuit board adopts a hybrid design of λ / 4 microstrip line + lumped components to achieve dual-band impedance transformation (VHF: 50Ω→1200Ω, UHF: 50Ω→80Ω).

[0027] In this embodiment, the main vibrator 10 , the Z-shaped vibrator 20 , the connecting column 30 , the screw 40 , the upper pole piece 51 and the lower pole piece 52 are all made of H62 brass and silver-plated, and the round iron cover 60 is made of low-carbon steel and nickel-plated.

[0028] Specifically, since the main vibrator 10, the Z-shaped vibrator 20, the connecting column 30, the screw 40, the upper pole piece 51 and the lower pole piece 52 are all made of H62 brass, and the conductivity of H62 brass is ≥28MS / m, higher efficiency can be achieved, and the round iron cover 60 is made of low-carbon steel, so that the magnetic permeability can be optimized, and the surface of the round iron cover 60 is nickel-plated, so that the anti-corrosion function of the round iron cover 60 can be effectively increased in this way.

[0029] In this embodiment, a PTFE gasket is provided between the connecting post 30 and the Z-shaped vibrator 20 .

[0030] Specifically, the connection column 30 and the Z-shaped vibrator 20 are separated by a PTFE gasket, so that the Z-shaped vibrator 20 can be coupled only through the electric field.

[0031] Working principle: The antenna adopts a U-shaped cup-shaped main oscillator 10 to increase the antenna's bandwidth and the antenna's signal receiving surface, thereby effectively increasing the antenna's gain while allowing the antenna to have near-ideal omnidirectionality. By setting a Z-shaped oscillator 20 between the main oscillator 10 and the connecting column 30, the antenna oscillator 1 forms a coupling with the antenna ground 2 to adjust the antenna standing wave VSWR. Figure 2 、 Figure 3 and Figure 4It can be clearly seen from the test diagram that after adding the Z-shaped vibrator 20, the efficiency of the antenna is significantly improved.

[0032] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-gain omnidirectional antenna, characterized in that: include: An antenna vibrator (1) is composed of a main vibrator (10), a Z-shaped vibrator (20), a connecting post (30), a screw rod (40), an upper pole piece (51) and a coaxial cable (70); the Z-shaped vibrator (20) is fixedly installed between the main vibrator (10) and the connecting post (30); the screw rod (40) is threadedly connected to the bottom end of the connecting post (30); an upper pole piece (51) is fixedly installed at the end of the screw rod (40); the upper pole piece (51) is connected to the core of the coaxial cable (70); a conical spiral vibrator is provided inside the main vibrator (10); and a duplexer circuit board is embedded in the connecting post (30); An antenna ground (2) includes a round iron cover (60), the top of the round iron cover (60) is connected to a lower pole piece (52), and the lower pole piece (52) is connected to a shielding layer of a coaxial cable (70).

2. The high-gain omnidirectional antenna according to claim 1, characterized in that: The main vibrator (10) comprises a vibrator body (101) in a U-shaped cup-shaped structure, the bottom of the vibrator body (101) is integrally provided with a gradually inward-facing closing opening (102), the Z-shaped vibrator (20) is fixedly mounted at the bottom end of the closing opening (102), and the conical spiral vibrator is arranged in the vibrator body (101) and the closing opening (102).

3. The high-gain omnidirectional antenna according to claim 1, characterized in that: The duplexer circuit board adopts an LTCC substrate, and the duplexer circuit board is integrated with a VHF / UHF independent LC matching network.

4. The high-gain omnidirectional antenna according to claim 1, characterized in that: The main vibrator (10), the Z-shaped vibrator (20), the connecting column (30), the screw (40), the upper pole piece (51) and the lower pole piece (52) are all made of H62 brass and have silver-plated surfaces, and the round iron cover (60) is made of low-carbon steel and has nickel-plated surfaces.

5. The high-gain omnidirectional antenna according to claim 1, characterized in that: A PTFE gasket is provided between the connecting column (30) and the Z-shaped vibrator (20).

Images