Low-cost broadband high-power capacity antenna

Abstract

The invention relates to a low-cost broadband high-power capacity antenna which comprises an antenna cavity, an antenna radiation unit is fixed in the antenna cavity through a supporting rod, a radio frequency connector is installed on an external interface of the antenna cavity, and the radio frequency connector is connected with the antenna radiation unit through a feed probe. The antenna radiation unit is E-shaped, and is provided with a C-shaped gap to improve low-frequency impedance; when the antenna transmits a signal, the radio frequency connector transmits the transmitted signal to the antenna radiation unit through the feed probe, the antenna radiation unit transmits a radio frequency signal in a space in the form of electromagnetic waves, and when the antenna receives the signal, the antenna radiation unit receives the electromagnetic waves in a working frequency band in the space. Then the signal is transmitted to the radio frequency connector through the feed probe, and the receiver receives the radio frequency signal from the radio frequency connector. On the premise of ensuring the advantages of small size, light weight and the like, the problems of narrow bandwidth and low power capacity of a microstrip patch antenna are solved, and the structure is simple.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular to a low-cost, broadband, and high-power capacity antenna. Background Art

[0002] At present, the antennas widely used in radio and television transmission systems mainly include bat wing antennas, loop antennas, slot antennas, etc. However, these traditional antennas are bulky, complex to process, difficult to debug, and expensive. Therefore, a new type of TV transmission antenna that is small in size, low in cost, and easy to debug has important application value.

[0003] Microstrip patch antennas have the characteristics of low profile, light weight, easy compatibility and low cost. However, microstrip patch antennas have narrow bandwidth and low power capacity, which cannot meet the requirements of TV transmission. At present, the way to widen the bandwidth of microstrip patch antennas is to increase the thickness of the dielectric substrate; however, increasing the thickness of the dielectric substrate not only increases the weight of the microstrip antenna, but also makes the size of the substrate too large and the cost high. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a low-cost, broadband, high-power capacity antenna to solve the deficiencies of the prior art.

[0005] The purpose of the present invention is achieved through the following technical solutions: a low-cost broadband high-power capacity antenna, which includes an antenna cavity, an antenna radiating unit is fixed in the antenna cavity through a support rod, a radio frequency connector is installed at an external interface of the antenna cavity, and the radio frequency connector is connected to the antenna radiating unit through a feeding probe; the antenna radiating unit is in an E-shape and has a C-shaped gap to improve low-frequency impedance and expand the working bandwidth; When the antenna transmits a signal, the RF connector transmits the transmission signal to the antenna radiating unit through the feeding probe, and the antenna radiating unit transmits the RF signal in the form of electromagnetic waves in space. When receiving a signal, the antenna radiating unit receives the electromagnetic waves within the working frequency band in space, and then transmits the signal to the RF connector through the feeding probe, and the receiver then receives the RF signal from the RF connector.

[0006] An impedance matching structure is arranged at the periphery of the connection between the RF connector and the feeding probe, and an equivalent capacitor is introduced to overcome the parasitic inductance introduced by the feeding probe and expand the antenna bandwidth.

[0007] A radome is mounted on the antenna cavity by countersunk screws, and the radome is fixed above the antenna radiation unit by fastening screws.

[0008] The RF connector is installed on the external interface of the antenna cavity by countersunk screws, and the internal probe of the RF connector is connected with the feeding probe by welding, and the feeding probe is then welded to the antenna radiation unit.

[0009] The invention has the following advantages: a low-cost broadband high-power capacity antenna which solves the problems of narrow bandwidth and low power capacity of microstrip patch antennas while ensuring advantages such as small size and light weight, and has a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a cross-sectional structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of an antenna radiation unit; In the figure: 1-RF connector, 2-impedance matching structure, 3-radome, 4-fastening screws, 5-feeding probe, 6-antenna radiation unit, 7-support rod, 8-antenna cavity. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present application provided below in conjunction with the drawings is not intended to limit the scope of protection of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application. The present invention is further described below in conjunction with the drawings.

[0012] like Figure 1 As shown, the present invention specifically relates to a low-cost broadband high-power capacity antenna, which includes an antenna cavity 8, an antenna radiating unit 6 is fixed in the antenna cavity 8 through a support rod 7, a radio frequency connector 1 is installed at an external interface of the antenna cavity 8, and the radio frequency connector 1 is connected to the antenna radiating unit 6 through a feeding probe 5; The RF connector 1 is installed on the external interface of the antenna cavity 8 by countersunk screws, and the impedance matching structure 2 is installed inside the antenna cavity 8 by countersunk screws. The antenna radiation unit 6 is installed on the support rod 7 by fastening screws 4, and the support rod 7 is fixed to the antenna cavity 8 by countersunk screws. The internal probe of the RF connector 1 is connected to the feeding probe 5 by welding, and the feeding probe 5 is welded to the radiation unit 6. The antenna cover 3 is fixed to the antenna cavity 8 by countersunk screws.

[0013] like Figure 2 As shown, the antenna radiation unit 6 needs to work at high power, so a metal sheet with a thickness of 2 mm is selected. Compared with the copper-clad board, this is not only conducive to heat dissipation, but also easy to process, while reducing costs, and can be mass-produced, with good development prospects. In order to achieve a wide bandwidth of the antenna, the antenna radiation unit 6 is made into an E shape, and a C-shaped gap is opened to improve the low-frequency impedance, further expanding the working bandwidth. In addition, in order to overcome the parasitic inductance introduced by the feeding probe 5, an impedance matching structure 2 in the shape of a circular cylinder is installed around the feeding probe 5, and an equivalent capacitor is introduced to further expand the antenna bandwidth.

[0014] Furthermore, in order to reduce the influence of the supporting structure on the antenna performance, the supporting rod 7 is made of polytetrafluoroethylene material.

[0015] In the present invention, when the antenna transmits a signal, the RF connector 1 transmits the transmission signal to the antenna radiating unit 6 through the feeding probe 5, and the antenna radiating unit 6 transmits the RF signal in the form of electromagnetic waves in space. When receiving a signal, the antenna radiating unit 6 receives the electromagnetic waves in the working frequency band in space, and then transmits the signal to the RF connector 1 through the feeding probe 5, and the receiver then receives the RF signal from the RF connector 1. In addition, the impedance matching structure 2 performs impedance matching so that the antenna can operate in a wider working frequency band, the antenna cover 3 plays a role in protecting the equipment, and the fastening screws 4 and the support rods 7 fix the antenna radiating unit 6 to the antenna cavity 8, so that the antenna can send and receive signals in a directional manner.

[0016] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used for various other combinations, modifications and improvements, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A low-cost broadband high-power capacity antenna, characterized in that: It comprises an antenna cavity (8), an antenna radiating unit (6) is fixed in the antenna cavity (8) via a support rod (7), a radio frequency connector (1) is installed at an external interface of the antenna cavity (8), and the radio frequency connector (1) is connected to the antenna radiating unit (6) via a feeding probe (5); the antenna radiating unit (6) is in an E-shape and is provided with a C-shaped gap to improve low-frequency impedance and expand the working bandwidth; When the antenna transmits a signal, the RF connector (1) transmits the transmission signal to the antenna radiating unit (6) through the feeding probe (5), and the antenna radiating unit (6) transmits the RF signal in the form of electromagnetic waves in space. When receiving a signal, the antenna radiating unit (6) receives the electromagnetic waves within the working frequency band in space, and then transmits the signal to the RF connector (1) through the feeding probe (5), and the receiver then receives the RF signal from the RF connector (1).

2. A low-cost broadband high-power capacity antenna according to claim 1, characterized in that: An impedance matching structure (2) is arranged at the periphery of the connection between the radio frequency connector (1) and the feeding probe (5), and an equivalent capacitor is introduced to overcome the parasitic inductance introduced by the feeding probe (5), thereby expanding the antenna bandwidth.

3. The low-cost broadband high-power capacity antenna according to claim 1, characterized in that: A radome (3) is mounted on the antenna cavity (8) by means of countersunk screws, and the radome (3) is fixed above the antenna radiation unit (6) by means of fastening screws (4).

4. The low-cost broadband high-power capacity antenna according to claim 1, characterized in that: The radio frequency connector (1) is mounted on an external interface of the antenna cavity (8) by means of countersunk screws, an internal probe of the radio frequency connector (1) is connected to a feed probe (5) by means of welding, and the feed probe (5) is then welded to the antenna radiation unit (6).

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