WO2017113092A1

WO2017113092A1 - Helical antenna, antenna and communication device

Info

Publication number: WO2017113092A1
Application number: PCT/CN2015/099409
Authority: WO
Inventors: 郭義祥; 杨华; 尤国雄
Original assignee: 海能达通信股份有限公司
Priority date: 2015-12-29
Filing date: 2015-12-29
Publication date: 2017-07-06

Abstract

Disclosed is a helical antenna, comprising a radio frequency connector (10), a connecting conductor (20), a whip-like component (40), a helical component (50) and a hollow barrel (30). The radio frequency connector (10) comprises an inner core (101) and an outer conductor (102). The inner core (101) is connected to the whip-like component (40), and the hollow barrel (30) is sheathed on a part of the whip-like component (40) close to the radio frequency connector (10). The outer conductor (102) and the hollow barrel (30) are connected via the connecting conductor (20). The helical component (50) is sheathed on the whip-like component (40) and is connected to the hollow barrel (30).

Description

Spiral antenna, antenna and communication device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a helical antenna, an antenna, and a communication device.

Background technique

With the rapid development of communication technologies, the demand for antennas is increasing, the existing antenna bands are narrow, and various frequency bands need to be equipped with antennas of different frequency bands. The antennas need to be repeatedly switched in different frequency bands during operation, which leads to communication. Inefficiency, which also shows that the bandwidth of the antenna directly affects the quality of service and communication efficiency.

In the prior art, the antenna bandwidth is generally extended by impedance matching. The impedance matching is to form an impedance of several tens of ohms through the inner core and the outer conductor of the antenna radio interface, and then impedance matching to a certain frequency bandwidth. Thereby an extension of the antenna bandwidth is achieved.

However, this impedance matching scheme reduces the radiation efficiency of the antenna.

Summary of the invention

Embodiments of the present invention provide a helical antenna, an antenna, and a communication device. The capacitance of the antenna is improved by providing a component for increasing capacitance on the antenna, thereby realizing an extended frequency bandwidth.

A first aspect of the present invention provides a helical antenna, comprising: a radio frequency connector, a connecting conductor, a whip member, a spiral member, and a hollow barrel; wherein the radio frequency connector includes an inner core and an outer conductor;

The inner core is connected to the whip member, and the hollow barrel is sleeved on the portion of the whip member close to the radio frequency connector;

The outer conductor and the hollow barrel are connected by a connecting conductor;

The spiral member is placed over the whip member and connected to the hollow barrel.

Optionally, the hollow barrel is a cylindrical hollow barrel.

Optionally, the connection point of the connection conductor and the outer conductor is the ground point GND of the outer conductor.

Optionally, there are a plurality of connecting conductors, and each connecting conductor is connected to the outer conductor and the hollow barrel, respectively.

A second aspect of the present invention provides an antenna comprising: a radio frequency connector, a connecting conductor, a whip member, and a hollow barrel; wherein the radio frequency connector includes an inner core and an outer conductor;

The outer conductor and the hollow barrel are connected by a connecting conductor.

Optionally, the antenna further includes a spiral component,

Optionally, the hollow barrel is a cylindrical hollow barrel.

A third aspect of the present invention provides a helical antenna, comprising: a radio frequency connector, a whip member, a spiral member, and a hollow barrel; wherein the radio frequency connector includes an inner core and an outer conductor;

The inner core is coupled to the whip member, and the hollow barrel is sleeved at a portion of the whip member adjacent to the radio frequency connector;

The outer conductor is connected to the hollow barrel;

The spiral member is sleeved on the whip member and coupled to the hollow barrel.

A fourth aspect of the present invention provides an antenna, including: a radio frequency connector, a whip member, and a hollow barrel; wherein the radio frequency connector includes an inner core and an outer conductor;

The outer conductor is coupled to the hollow barrel.

A fifth aspect of the present invention provides a communication device, comprising: the antenna of any of the alternative aspects of the second aspect or the second aspect.

Compared with the prior art, the frequency bandwidth is increased by impedance matching, resulting in low radiation efficiency of the antenna. Compared with the spiral antenna, the antenna and the communication device provided by the embodiments of the present invention, the antenna is improved by providing a component for increasing capacitance on the antenna. Capacitance, thus achieving an extended bandwidth.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings can also be obtained from those skilled in the art based on these drawings without paying any creative effort.

1 is a schematic structural view of a helical antenna according to an embodiment of the present invention;

2 is an enlarged schematic view showing a partial structure of a helical antenna according to an embodiment of the present invention;

3 is a schematic diagram of a measured curve of a capacitance-enhancing spectral width of a helical antenna according to an embodiment of the present invention;

4 is a schematic structural diagram of an antenna according to an embodiment of the present invention;

FIG. 5 is another schematic structural diagram of an antenna according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a communication device according to an embodiment of the present invention.

detailed description

Embodiments of the present invention provide a helical antenna, an antenna, and a communication device. The capacitance of the antenna is improved by providing a component for increasing capacitance on the antenna, thereby realizing an extended frequency bandwidth. The details are described below separately.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic structural diagram of a helical antenna according to an embodiment of the present invention. FIG. 2 is an enlarged schematic view showing a partial structure of a helical antenna according to an embodiment of the present invention.

Referring to FIG. 1 and FIG. 2, a helical antenna provided by an embodiment of the present invention includes a radio frequency connector 10, a connecting conductor 20, a hollow barrel 30, a whip member 40, and a spiral member 50. The radio frequency connector 10 includes an inner core 101 and an outer conductor 102. .

The inner core 101 is coupled to the whip member 40, the inner core 101 may be welded to the whip member 40, the hollow barrel 30 is placed over the portion of the whip member 40 adjacent to the radio frequency connector 10, and the outer conductor 102 and the hollow barrel 30 are passed through the connecting conductor 20. The spiral member 50 is attached to the whip member 40, and the spiral member 50 is coupled to the hollow tub 30, and the spiral member 50 can be welded to the hollow tub 30.

The hollow barrel 30 is sleeved on the whip 40 to form a capacitive structure, the inner core 101 and the whip 40 are connected to form a positive pole of the capacitor, and the hollow barrel 30 and the outer conductor 102 are connected by a connecting conductor 20 to form a negative pole of the capacitor, so that the present invention When the helical antenna provided by the embodiment is in operation, the hollow barrel 30 and the whip 40 form a capacitance, thereby increasing the capacitance of the helical antenna.

The hollow barrel 30 is a cylindrical hollow barrel, which ensures a balance of capacitance and thus provides a stable large-width spectrum.

The connection point of the connection conductor 20 and the outer conductor 102 is the ground point (Ground, GND) of the outer conductor 102.

There may be a plurality of connecting conductors 20, and each of the connecting conductors 20 is connected to the outer conductor 102 and the hollow barrel 30, respectively.

An increase in capacitance can result in a wider spectral width of the helical antenna. For example, as shown in FIG. 3, FIG. 3 is a schematic diagram of a measured curve of the increased capacitive rear spectral width of the helical antenna according to the embodiment of the present invention.

Since the quality factor Q of the antenna is larger, the bandwidth is narrower. Therefore, in order to increase the bandwidth, it is necessary to reduce the Q value of the antenna, and in the series circuit, Q=1/ω ₀ RC, where ω ₀ is the frequency and R is the resistance value. C is a capacitance value. When ω ₀ and R are constant, the C value becomes larger, and the Q value becomes smaller. That is to say, increasing the capacitance can reduce the Q value, thereby increasing the bandwidth.

As shown in FIG. 3, the spectrum width has reached several hundred megahertz, and the spectrum width of the impedance matching method in the prior art is usually only a few tens of megahertz. It can be seen that the helical antenna provided by the embodiment of the present invention can be doubled. The spectral width of the antenna.

It should be noted that, in another implementation of the helical antenna provided by the present invention, a connecting conductor may not be needed.

The outer conductor can be directly connected to the hollow barrel without connecting through the connecting conductor. Similarly, a capacitance can be formed between the hollow barrel and the whip member, thereby increasing the capacitance of the helical antenna and increasing the spectral width of the antenna.

FIG. 4 is a schematic structural diagram of an antenna according to an embodiment of the present invention.

Referring to FIG. 4, an antenna provided by an embodiment of the present invention includes a radio frequency connector 10, a connecting conductor 20, a hollow barrel 30, and a whip member 40. The radio frequency connector 10 includes an inner core 101 and an outer conductor 102.

The inner core 101 is coupled to the whip member 40, the inner core 101 may be welded to the whip member 40, the hollow barrel 30 is placed over the portion of the whip member 40 adjacent to the radio frequency connector 10, and the outer conductor 102 and the hollow barrel 30 are passed through the connecting conductor 20. connection.

FIG. 5 is another schematic structural diagram of an antenna according to an embodiment of the present invention.

Referring to FIG. 5, an embodiment of the antenna provided by the embodiment of the present invention further includes a spiral member 50, the spiral member 50 is sleeved on the whip member 40, and the spiral member 50 is connected to the hollow barrel 30, and the spiral member 50 can be welded to the hollow barrel. 30 on.

An increase in capacitance can result in a wider spectral width of the helical antenna. For example, see also Figure 3. The spectrum width has reached several hundred megahertz, and the spectrum width of the impedance matching method in the prior art is usually only a few tens of megahertz. It can be seen that the helical antenna provided by the embodiment of the present invention can double the spectrum width of the antenna.

It should be noted that, in another achievable solution of the antenna provided by the present invention, a connecting conductor may not be needed.

FIG. 6 is a schematic diagram of an embodiment of a communication device according to an embodiment of the present invention.

Referring to Figure 6, the helical antenna described in the portion of Fig. 1 or Fig. 2, or the antenna described in the sections of Figs. 4 and 5, is mounted on the communication device.

Large-bandwidth spectrum resources can be provided regardless of which antenna is installed on the communication device.

A person skilled in the art can understand that all or part of the steps of the foregoing embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium, and the storage medium can include: RAM, disk or CD, etc.

The spiral antenna, the antenna, and the communication device provided by the embodiments of the present invention are described in detail. The principles and implementations of the present invention are described in the following. The description of the above embodiments is only used to help understand the present invention. Method and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific embodiment and application range. In the above, the contents of the present specification should not be construed as limiting the present invention.

Claims

A helical antenna, comprising: a radio frequency connector, a connecting conductor, a whip member, a spiral member and a hollow barrel; wherein the radio frequency connector comprises an inner core and an outer conductor;

The inner core is coupled to the whip member, and the hollow barrel is sleeved at a portion of the whip member adjacent to the radio frequency connector;

The outer conductor and the hollow barrel are connected by the connecting conductor;

The spiral member is sleeved on the whip member and coupled to the hollow barrel.
The helical antenna according to claim 1, wherein the hollow barrel is a cylindrical hollow barrel.
The helical antenna according to claim 1 or 2, wherein a connection point of the connection conductor and the outer conductor is a ground point GND of the outer conductor.
The helical antenna according to claim 1 or 2, wherein the plurality of connection conductors are each, and each of the connection conductors is connected to the outer conductor and the hollow barrel, respectively.
An antenna, comprising: a radio frequency connector, a connecting conductor, a whip member and a hollow barrel; wherein the radio frequency connector comprises an inner core and an outer conductor;

The inner core is coupled to the whip member, and the hollow barrel is sleeved at a portion of the whip member adjacent to the radio frequency connector;

The outer conductor and the hollow barrel are connected by the connecting conductor.
The antenna according to claim 5, wherein said antenna further comprises a spiral member.

The spiral member is sleeved on the whip member and coupled to the hollow barrel.
The antenna according to claim 5 or 6, wherein the hollow barrel is a cylindrical hollow barrel.
The antenna according to claim 5 or 6, wherein a connection point of the connection conductor and the outer conductor is a ground point GND of the outer conductor.
The antenna according to claim 5 or 6, wherein the plurality of connection conductors are each, and each of the connection conductors is connected to the outer conductor and the hollow barrel, respectively.
A helical antenna, comprising: a radio frequency connector, a whip member, a spiral member and a hollow barrel; wherein the radio frequency connector comprises an inner core and an outer conductor;

The inner core is coupled to the whip member, and the hollow barrel is sleeved at a portion of the whip member adjacent to the radio frequency connector;

The outer conductor is connected to the hollow barrel;

The spiral member is sleeved on the whip member and coupled to the hollow barrel.
A communication device, comprising: the antenna of any of claims 5-9.