CN109698410B

CN109698410B - 3500M antenna array

Info

Publication number: CN109698410B
Application number: CN201811470954.3A
Authority: CN
Inventors: 卢培林; 陶琨; 顾泽华
Original assignee: Jiangsu Huacan Telecommunications Group Co Ltd
Current assignee: Jiangsu Huacan Telecommunications Group Co Ltd
Priority date: 2018-12-04
Filing date: 2018-12-04
Publication date: 2020-10-16
Anticipated expiration: 2038-12-04
Also published as: CN109698410A

Abstract

The invention relates to a 3500M antenna array, which is characterized in that: the antenna comprises a plurality of antenna units which are arranged in a circular array or a rectangular array; the antenna unit comprises a reflecting plate, a radiation unit and a connector; the performance of the antenna unit is improved by reasonably controlling the size of the reflecting plate of the antenna unit, so that the antenna unit forms a high-performance high-frequency single-polarized antenna and has the advantages of wide coverage frequency band, strong anti-interference capability and the like; the vertical polarization oscillator arm structure is adopted, the horizontal radiation width of the oscillator arm structure reaches 65 +/-5 degrees, the unit efficiency is high, the structure is simple, and the antenna coverage range is large.

Description

3500M antenna array

Technical Field

The invention relates to the technical field of antenna communication, in particular to a 3500M antenna array.

Background

Mobile communication and internet are two major services which are fastest in development, have the largest market potential and have the most attractive prospect in the telecommunication industry in the world today. With the introduction of third generation mobile communication systems (hereinafter referred to as 3G), 3G wireless mobile communication technology attracts great attention. The TD-SMDMA mobile communication system is one of 3G international standards proposed by China. The method is a complete communication system standard which is put forward for the first time in China and is internationally recognized, is a breakthrough in the field of communication standards in China, fills up the blank of century telecommunication history in China, marks that the telecommunication level in China has entered the stage of driving industrial development by independent innovation, and has very important significance for sustainable development of telecommunication industry in China and realizing the conversion from the telecommunication big country to the telecommunication strong country in China.

As a receiving and transmitting device of electromagnetic waves, the transmission coverage of signals in the mobile communication technology cannot be separated from a base station antenna, a dual-polarized mobile base station antenna is an indispensable component of each base station, and the performance of the dual-polarized mobile base station antenna directly influences the communication quality; the radiation unit is a basic component of the dual-polarized mobile base station antenna and is a key component influencing the performance of the dual-polarized mobile base station antenna.

Due to the particularity of the antenna, the sizes of all parts have important influence on all performance indexes of the antenna; therefore, optimizing the structure and size of the antenna based on the known antenna structure to obtain better performance parameters is a research topic in the communication industry at present.

For example, a high-performance dual-frequency dual-polarized electrically tunable antenna disclosed in patent No. 201310386801.1 includes a reflection plate, a bowl-shaped low-frequency oscillator, a diamond-shaped high-frequency oscillator, a feeder network, a phase shifter and a phase shift driving mechanism; the mechanism adopts a single-row high-frequency oscillator, four ports are adopted for output, and the dual-frequency dual-polarized electrically tunable antenna has the defects of certain coverage frequency band and insufficient anti-interference performance.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a 3500M antenna array, which can solve the problems of the defects of the coverage frequency range of a general antenna array and the insufficient anti-interference performance.

In order to solve the technical problems, the technical scheme of the invention is as follows: A3500M antenna array has the innovation points that: the antenna comprises a plurality of antenna units which are arranged in a circular array or a rectangular array; the antenna unit comprises a reflecting plate, a radiation unit and a connector;

the reflecting plate is bent at least twice to the same side along two side edges of the extending direction to form a step surface, and two ends of the reflecting plate are communicated; the radiation units are provided with a pair and distributed along the extending direction of the reflecting plate; the central distance between the radiation units is 70mm-100 mm; the distance between the top end surface of the radiation unit and the reflecting plate is 20mm-30 mm.

The radiation units are connected through a feeder line network, and the connector is arranged at one end of the reflecting plate and connected to the radiation units through the feeder line network; the radiating unit comprises a first oscillator arm and a second oscillator arm, and the first oscillator arm and the second oscillator arm are connected to the reflecting plate through balun seats; the extending direction of the first oscillator arm is perpendicular to the second oscillator arm, and a gap is reserved between the first oscillator arm and the second oscillator arm; the first oscillator arm is connected with the second oscillator arm through a metal feed sheet.

Further, the first vibrator arm is in a linear structure; the second oscillator arm comprises a straight line section and a conical section; and a groove structure for accommodating the end part of the first vibrator arm is formed at the joint of the straight line section of the second vibrator arm and the conical section of the second vibrator arm.

Furthermore, a connecting hole for accommodating a network cable of a feeder network to pass through is arranged on the conical section structure of the second vibrator arm.

Further, the horizontal lobe width of the radiation unit is 65 degrees, and the vertical lobe width of the radiation unit is 60 degrees; the radiating elements are vertically polarized.

Furthermore, the front-back radiation ratio of the radiation unit is more than or equal to 22dB, the voltage standing wave ratio of the radiation unit is less than or equal to 1.5, and the isolation of the radiation unit is more than or equal to 28 dB.

The invention has the advantages that:

1) the performance of the antenna unit is improved by reasonably controlling the size of the reflecting plate of the antenna unit, so that the antenna unit forms a high-performance high-frequency single-polarized antenna and has the advantages of wide coverage frequency band, strong anti-interference capability and the like; the vertical polarization oscillator arm structure is adopted, the horizontal radiation width of the oscillator arm structure reaches 65 degrees, the unit efficiency is high, the structure is simple, and the antenna coverage range is large.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is an antenna element array diagram of a 3500M antenna array according to the present invention.

Fig. 2 is a top view of an antenna unit of a 3500M antenna array according to the present invention.

Detailed Description

The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.

A 3500M antenna array as shown in fig. 1 to fig. 2 includes a plurality of antenna units 1 arranged in a circular array or a rectangular array; the antenna unit 1 includes a reflection plate 2, a radiation unit 3, and a connector 4.

The reflecting plate 2 is bent at least twice to the same side along two side edges of the extending direction to form a step surface, and two ends of the reflecting plate are communicated; the radiation units 3 are provided with a pair and distributed along the extending direction of the reflecting plate 1; the central distance between the radiation units 3 is 70mm-100 mm; the distance between the top end surface of the radiation unit and the reflecting plate is 20mm-30 mm.

The radiation units 3 are connected through a feeder line network, and the connector 4 is arranged at one end of the reflecting plate 1 and connected to the radiation units 3 through the feeder line network; the radiation unit 3 comprises a first oscillator arm 31 and a second oscillator arm 32, and the first oscillator arm 31 and the second oscillator arm 32 are both connected to the reflecting plate 1 through a balun seat; the extending direction of the first oscillator arm 31 is perpendicular to the second oscillator arm 32, and a gap is reserved between the first oscillator arm 31 and the second oscillator arm 32; the first oscillator arm 31 and the second oscillator arm 32 are connected through a metal feeding sheet.

The first vibrator arm 31 is of a linear structure; the second vibrator arm 32 includes a straight section 321 and a tapered section 322; the junction of the straight section 321 of the second vibrator arm 32 and the tapered section 322 of the second vibrator arm 32 forms a groove structure for accommodating the end of the first vibrator arm 31.

The tapered section 322 of the second vibrator arm 32 is structurally provided with a connection hole for receiving a cable of a feeder network to pass through.

The horizontal lobe width of the radiation unit 3 is 65 °, and the vertical lobe width of the radiation unit 3 is 60 °; the radiating elements 3 are vertically polarized.

The front-back radiation ratio of the radiation unit 3 is more than or equal to 22dB, the voltage standing wave ratio of the radiation unit 3 is less than or equal to 1.5, and the isolation of the radiation unit is more than or equal to 28 dB.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A 3500M antenna array, comprising: the antenna comprises a plurality of antenna units which are arranged in a circular array or a rectangular array; the antenna unit comprises a reflecting plate, a radiation unit and a connector;

the reflecting plate is bent at least twice to the same side along two side edges of the extending direction to form a step surface, and two ends of the reflecting plate are communicated; the radiation units are provided with a pair and distributed along the extending direction of the reflecting plate; the central distance between the radiation units is 70mm-100 mm; the distance between the top end surface of the radiation unit and the reflecting plate is 20mm-30 mm;

the radiation units are connected through a feeder line network, and the connector is arranged at one end of the reflecting plate and connected to the radiation units through the feeder line network; the radiating unit comprises a first oscillator arm and a second oscillator arm, and the first oscillator arm and the second oscillator arm are connected to the reflecting plate through balun seats; the extending direction of the first oscillator arm is perpendicular to the second oscillator arm, and a gap is reserved between the first oscillator arm and the second oscillator arm; the first oscillator arm is connected with the second oscillator arm through a metal feed sheet;

the horizontal lobe width of the radiation unit is 65 degrees, and the vertical lobe width of the radiation unit is 60 degrees; the radiating elements are vertically polarized.

2. The 3500M antenna array of claim 1, wherein: the first vibrator arm is of a linear structure; the second oscillator arm comprises a straight line section and a conical section; and a groove structure for accommodating the end part of the first vibrator arm is formed at the joint of the straight line section of the second vibrator arm and the conical section of the second vibrator arm.

3. The 3500M antenna array of claim 2, wherein: and a connecting hole for accommodating a network cable of a feeder network to pass through is arranged on the conical section structure of the second vibrator arm.

4. The 3500M antenna array of claim 1, wherein: the front-to-back radiation ratio of the radiation unit is more than or equal to 22dB, the voltage standing wave ratio of the radiation unit is less than or equal to 1.5, and the isolation of the radiation unit is more than or equal to 28 dB.