CN214336913U

CN214336913U - Antenna

Info

Publication number: CN214336913U
Application number: CN202120333540.7U
Authority: CN
Inventors: 漆一宏; 迟礼东; 于伟; 张辉彬
Original assignee: GENERAL TEST SYSTEMS Inc
Current assignee: GENERAL TEST SYSTEMS Inc
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-10-01
Anticipated expiration: 2031-02-05

Abstract

The present disclosure provides an antenna, including radiating part and conduction portion, wherein: the radiation part comprises two radiation arms, and the two radiation arms are not electrically connected; the transmission part comprises a transmission line and a metal ground, no electrical connection exists between the transmission line and the metal ground, and the transmission line is connected with the radiation arm to feed electricity to the radiation arm; the radiation arm includes a grounding portion that is in contact with or coupled to a metal ground, and the grounding portion is loaded. The antenna disclosed by the invention has a wide operating band and a small size, can be used for broadband wireless communication or wireless test, and is also suitable for application scenes with limited space or compact structure.

Description

Antenna

Technical Field

The utility model relates to the field of communication technology, especially, relate to an antenna.

Background

An antenna is an indispensable device for transmitting and receiving electromagnetic waves in wireless communication, and the performance of the antenna determines the efficiency of electromagnetic energy transmission. With the rapid development of communication technology, people put higher and higher requirements on the performance of antennas. For example, in some communication or testing scenarios, the antenna is required to satisfy both a wide operating band and a compact structure.

SUMMERY OF THE UTILITY MODEL

The present disclosure describes an antenna.

According to a first aspect of embodiments of the present disclosure, there is provided an antenna comprising a radiating portion and a conductive portion, wherein: the radiation part comprises two radiation arms, and the two radiation arms are not electrically connected; the transmission part comprises a transmission line and a metal ground, no electrical connection exists between the transmission line and the metal ground, and the transmission line is connected with the radiation arm to feed electricity to the radiation arm; the radiation arm includes a grounding portion that is in contact with or coupled to a metal ground, and the grounding portion is loaded.

According to an embodiment of the antenna, the ground is located at the end of the radiating arm.

According to one embodiment of the antenna, the antenna is a Vivaldi antenna or a dipole antenna.

According to an embodiment of the antenna, the radiating arm is bent to form an arch.

According to one embodiment of the antenna, the transmission line comprises a first transmission line and a second transmission line, each connected to two radiating arms for feeding them.

According to an embodiment of the antenna, the metallic ground is located between the first transmission line and the second transmission line.

According to an embodiment of the antenna, the transmission line is a microstrip line to a stripline and then two microstrip lines, or a microstrip line to two microstrip lines, or a stripline to two microstrip lines.

According to an embodiment of the antenna, the antenna further comprises a metal reflector plate.

According to an embodiment of the antenna, the antenna is arranged on a PCB board, the PCB board comprising at least three metal layers, the two radiating arms being located at different metal layers, the metal being located at the metal layer between the two radiating arms.

According to one embodiment of the antenna, the antenna is a dual polarized antenna comprising pairs of radiating portions and conductive portions.

In the embodiment of the disclosure, the metal ground of the antenna and the transmission line jointly form a conduction part, the radiation arm is connected or coupled with the metal ground through the grounding part, so that the metal ground participates in transmission and provides a reference ground plane and a loss electromagnetic boundary condition for the radiation part, and the antenna forms a resonant loop, so that broadband matching can be realized under a compact size. Meanwhile, the grounding part is loaded, the end loss is introduced, partial reflected waves can be consumed, the broadband matching characteristic of the antenna is further improved, and the size of the antenna is reduced.

The antenna disclosed by the invention has a wide operating band and a small size, can be used for broadband wireless communication or wireless test, and is also suitable for application scenes with limited space or compact structure.

Drawings

Fig. 1 is a schematic diagram of an antenna shown in accordance with one embodiment of the present disclosure.

Fig. 2 is a schematic diagram of an antenna shown in accordance with one embodiment of the present disclosure.

Fig. 3 is a schematic diagram of an antenna shown in accordance with one embodiment of the present disclosure.

Fig. 4 is a schematic diagram of an antenna shown in accordance with one embodiment of the present disclosure.

Detailed Description

Embodiments of the present disclosure are described below with reference to the drawings. It should be understood that the drawings are not necessarily to scale. The described embodiments are exemplary and not intended to limit the present disclosure, which features may be combined with or substituted for those of the embodiments in the same or similar manner. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The wireless communication device transmits and receives electromagnetic waves through the antenna, and the wireless transceiving performance of the communication device is often evaluated through testing the antenna. In some wireless communication or wireless test scenarios, the antenna is required to have a wider operating band and a miniaturized structure.

In view of this, an embodiment of an aspect of the present disclosure provides an antenna. The antenna includes radiation portion and conduction portion, wherein: the radiation part comprises two radiation arms, and the two radiation arms are not electrically connected; the transmission part comprises a transmission line and a metal ground, no electrical connection exists between the transmission line and the metal ground, and the transmission line is connected with the radiation arm to feed electricity to the radiation arm; the radiation arm includes a grounding portion that is in contact with or coupled to a metal ground, and the grounding portion is loaded.

In some embodiments, the antenna is disposed on a PCB board. Referring to fig. 1-2, fig. 1 is a schematic view of an antenna disposed on a PCB board, and fig. 2 is a schematic view of the structure of layers in the antenna shown in fig. 1. The PCB board 100 includes a plurality of metal layers 101, and the radiation arm 201 and the radiation arm 202 are located on different metal layers 101, and the radiation arm is bent to form an arch shape like a V shape. The bent radiating arm increases the current path, can realize lower working frequency under the same antenna size, and simultaneously increases the radiation resistance, so that the antenna efficiency is higher. There is no direct electrical connection between the two radiating arms. A metal ground 303 is located in metal layer 101 between radiating arm 201 and radiating arm 202. The transmission line may be, for example, a parallel twin-wire or twin-conductor transmission line, and may be in various forms, such as a microstrip line to a stripline and then to two microstrip lines, or a microstrip line to two microstrip lines, or a stripline to two microstrip lines. In this embodiment, the transmission lines include a first transmission line 301 and a second transmission line 302, the first transmission line 301 being connected to the radiating arm 201 to feed it, and the second transmission line 302 being connected to the radiating arm 202 to feed it. There is no electrical connection between the transmission line and the metal ground 303. Optionally, a metallic ground 303 is located between the first transmission line 301 and the second transmission line 302 to achieve a more balanced feed. The distal end of the radiation arm 201 includes a grounding portion 2011 that is connected to the metal ground 303, the distal end of the radiation arm 202 includes a grounding portion 2021 that is connected to the metal ground 303, and the grounding portion 2011 and the grounding portion 2021 are applied. In this embodiment, as an example, the transmission line 301 and the radiating arm 201 are located in the same metal layer 101, the transmission line 302 and the radiating arm 202 are located in the same metal layer 101, and the metal ground 303 is located in the metal layer 101 therebetween.

Referring to fig. 3, in some embodiments, the antenna is a metal structure, and the radiation arm 201 and the radiation arm 202 are arranged in parallel up and down, and the radiation arm is bent to form an arch like a V shape. A first transmission line 301 is connected to the radiating arm 201 for feeding it and a second transmission line 302 is connected to the radiating arm 202 for feeding it. A metallic ground 303 is located between the first and

second transmission lines

301 and 302 and between the radiating arm 201 and the radiating arm 202. The

grounding portions

2011, 2021 are located at the ends of the radiating arms 201, and the grounding portions at the ends of the two radiating arms are applied with a force through the resistors 400. It is understood that other loading methods, such as capacitive loading, inductive loading, conductor loading or mixed loading, may be used, or a gap may be left between the ground and the metal ground, and the loading may be performed through air or the substrate material of the antenna (e.g., the substrate of the PCB board), which is equivalent to loading the capacitor. Ground may or may not be connected (coupled) to metal ground 303 through its loading structure.

In some of the foregoing embodiments, the antenna may be a Vivaldi antenna or a dipole antenna. Referring to fig. 4, in other embodiments, the antenna is a dual polarized antenna comprising a pair of radiating portions 200 and conductive portions 300. The radiating arm 200 is bent to form an arch like a C-shape. Optionally, the antenna further comprises a metal reflector plate 500.

Further, in other embodiments, the antenna may be a circularly polarized antenna, and specifically, a 3dB bridge may be added to the above-mentioned dual polarized antenna to implement circular polarization.

Further, in other embodiments, the antenna may also be a multi-polarized antenna including more than two pairs of radiating and conducting portions.

It should be noted that the drawings in the present disclosure are simplified schematic diagrams, and are only used for schematically illustrating the position relationship and the connection relationship between the parts in the embodiments, and the antenna of the present disclosure may further include other conventional structures, such as a component or a matrix material for fixing or supporting, and the like.

In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In the present disclosure, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present disclosure.

Claims

1. An antenna, comprising a radiating portion and a conducting portion, wherein:

the radiation part comprises two radiation arms, and the two radiation arms are not electrically connected;

the conducting part comprises a transmission line and a metal ground, no electrical connection exists between the transmission line and the metal ground, and the transmission line is connected with the radiating arm to feed electricity to the radiating arm;

the radiating arm includes a grounding portion that is in contact with the metal ground, the grounding portion being loaded.

2. The antenna of claim 1, wherein the grounding portion is located at a distal end of the radiating arm.

3. An antenna according to claim 2, characterized in that the antenna is a Vivaldi antenna or a dipole antenna.

4. An antenna according to claim 3, wherein the radiating arm is bent to form an arch.

5. An antenna according to claim 1, wherein the transmission line comprises a first transmission line and a second transmission line, each connected to both of the radiating arms for feeding the same.

6. The antenna of claim 5, wherein the metal ground is located between the first transmission line and the second transmission line.

7. The antenna of claim 5, wherein the transmission line is a microstrip line to a stripline and then two microstrip lines, or a microstrip line to two microstrip lines, or a stripline to two microstrip lines.

8. The antenna of claim 1, further comprising a metal reflector plate.

9. The antenna of claim 1, wherein the antenna is disposed on a PCB board, the PCB board comprising a plurality of metal layers, two of the radiating arms being located at different ones of the metal layers, the metal being located at a metal layer between the two radiating arms.

10. An antenna according to any of claims 1-8, wherein the antenna is a dual polarized antenna comprising pairs of said radiating portions and said conducting portions.