Miniaturized antenna capable of being debugged

Abstract

The utility model relates to the technical field of radiating antennas, and discloses an adjustable miniaturized antenna, which comprises a grounding plate, a clearance zone, an excitation structure and a resonance structure, and is characterized in that the grounding plate is laid on two or more layers of printed circuit boards; the clearance area is a side opening of the grounding plate; the excitation structure is configured in the clearance area and is connected with the grounding plate; the resonance structure comprises an annular current mode arranged at the edge of the clearance area; the excitation structure and the resonance structure are respectively provided with a component used for adjusting the resonance frequency. The utility model realizes an adjustable miniaturized antenna, which can reduce the size space of the antenna, reduce the use limitation and carrying requirements of the antenna and change the resonant frequency of the antenna on the premise of meeting related performance standards of the antenna.

Description

Technical Field

[0001] The utility model relates to the technical field of radiating antennas, in particular to an adjustable miniaturized antenna. Background Art

[0002] Antennas have become an essential device in various wireless devices to transmit and receive electromagnetic wave signals. Multi-frequency antenna technology can greatly improve the wireless transmission rate and has been widely used in the fourth-generation mobile communications, fifth-generation communication systems, and the Internet of Everything. However, at present, most of the existing antennas are large and occupy a large area. When used, they are restricted by the site. Therefore, the design space of the antenna is constantly compressed. The miniaturization design of the antenna is an important research direction. Under the premise of reducing the size of the antenna, the standards of the antenna related performance need to be met. Therefore, how to provide an adjustable miniaturized antenna is a problem that needs to be solved urgently. Utility Model Content

[0003] The embodiment of the utility model provides an adjustable miniaturized antenna to solve the above-mentioned technical problems in the prior art.

[0004] In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended to be a general review, nor is it intended to identify key / important components or to delineate the scope of protection of these embodiments. Its only purpose is to present some concepts in a simple form as a preface to the detailed description that follows.

[0005] According to a first aspect of an embodiment of the utility model, an adjustable miniaturized antenna is provided.

[0006] In one embodiment, the adjustable miniaturized antenna includes: a ground plate, a clearance area, an excitation structure and a resonance structure, wherein the ground plate is laid on two or more layers of printed circuit boards; the clearance area is a side opening of the ground plate; the excitation structure is arranged in the clearance area and connected to the ground plate; the resonance structure includes a circular current mode arranged at the edge of the clearance area; wherein the excitation structure and the resonance structure are both configured with components for adjusting the resonance frequency.

[0007] In one embodiment, the excitation structure includes a feeder and a conductor one, wherein one end of the conductor one is connected to the feeder, and the feeder is connected to the ground plate.

[0008] In one embodiment, the other end of the wire 1 is connected to a ground plate on a side of the clearance area.

[0009] In one embodiment, the other end of the wire 1 is connected to the ring current mode.

[0010] In one embodiment, the excitation structure further includes n components for controlling impedance matching of the antenna, where n is an integer greater than or equal to 1, and the components are connected to the middle of the first conductor.

[0011] In one embodiment, the annular current mode includes wire 2, wire 3 and wire 4, one end of wire 2 is connected to the ground plate on the side of the clearance area, one end of wire 3 and wire 4 are respectively connected to the ground plate on the side of the clearance area, and the other ends of wire 3 and wire 4 are suspended.

[0012] In one embodiment, the other end of the second conductive wire is connected to a ground plate on the other side of the clearance area.

[0013] In one embodiment, the other end of the wire 2 is connected to the wire 3.

[0014] In one embodiment, there are h components on the conductor three for adjusting the resonance frequency, where h is an integer greater than or equal to 1, and the components are connected to a side of the conductor three close to the ground plate.

[0015] In one embodiment, there are m components on the wire 2 for adjusting the resonance frequency, where m is an integer greater than or equal to 1, and the components are connected to the middle of the wire 2.

[0016] The technical solution provided by the embodiment of the utility model may have the following beneficial effects:

[0017] The utility model realizes an adjustable miniaturized antenna, which can reduce the size and space of the antenna, reduce the use restrictions and carrying requirements of the antenna, and change the resonant frequency of the antenna while meeting the relevant performance standards of the antenna.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0020] Figure 1 is a structural schematic diagram of an adjustable miniaturized antenna according to an exemplary embodiment;

[0021] Figure 2 is a structural schematic diagram showing an adjustable miniaturized antenna according to another exemplary embodiment;

[0022] Figure 3is a Smith circle diagram of an adjustable miniaturized antenna according to an exemplary embodiment;

[0023] Figure 4 1 is an S parameter diagram of an adjustable miniaturized antenna when the capacitance of component 2 changes according to an exemplary embodiment.

[0024] In the figure:

[0025] 1. Ground plate; 2. Clearance area; 3. Power feed; 4. Wire one; 5. Component one; 6. Wire two; 7. Component two; 8. Wire three; 9. Wire four; 10. Component three. DETAILED DESCRIPTION

[0026] The following description and accompanying drawings fully illustrate the specific embodiments of this article so that those skilled in the art can practice them. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The scope of the embodiments of this article includes the entire scope of the claims, as well as all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another, without requiring or implying any actual relationship or order between these elements. In fact, the first element can also be called the second element, and vice versa. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the structure, device or equipment including a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also include elements inherent to such structure, device or equipment. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the structure, device or equipment including the elements. Each embodiment is described in a progressive manner herein, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other.

[0027] The terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used herein to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this article and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of this article, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, it can also be the internal connection of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0028] As used herein, the term "plurality" means two or more than two, unless otherwise specified.

[0029] In this document, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0030] In this article, the term "and / or" is a description of the association relationship between objects, indicating that three relationships may exist. For example, A and / or B means: A or B, or, A and B.

[0031] In the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0032] Figure 1 An embodiment of the adjustable miniaturized antenna of the utility model is shown.

[0033] In this optional embodiment, the adjustable miniaturized antenna includes a ground plate 1, a clearance area 2, a feed 3, a wire 1 4, a component 1 5, a wire 2 6, a component 2 7, a wire 3 8, a wire 4 9 and a component 3 10, wherein:

[0034] The ground plate 1 is laid on a multi-layer printed circuit board with two or more layers; the clearance area 2 is a side opening of the ground plate 1, the wire 1 4 and the feed 3 constitute an excitation structure, the wire 2 6, the wire 3 8 and the wire 4 9 constitute a ring current mode, and the ring current mode is arranged at the edge of the clearance area 2 to form a resonance structure;

[0035] For the excitation structure, the two ends of the wire 4 are connected to the sides of the feed 3 and the ground plate 1 respectively, and the feed 3 is connected to the ground plate 1; and the wire 4 is also provided with a component 5 for controlling the impedance matching of the antenna; the component 5 can be a wire, an inductive element and / or a capacitive element, or any combination of a wire, an inductive element and a capacitive element. The inductive element has an inductive component, which can be a lumped element, such as a chip inductor, a chip resistor, etc., or a distributed element, such as a wire, a coil, etc. The capacitive element has a capacitive component, which can be a lumped element, such as a chip capacitor, a varactor diode, a transistor, etc., or a distributed element, such as a parallel wire, a transmission line, etc. In order to obtain a specific capacitance, a combination of multiple elements can be used instead of a capacitive element.

[0036] For the circular current mode, the two ends of the conductor 2 6 are respectively connected to the grounding plates 1 on both sides of the clearance area 2, one end of the conductor 3 8 and the conductor 4 9 are respectively connected to the grounding plates 1 on the side of the clearance area, and the other ends of the conductor 3 8 and the conductor 4 9 are suspended.

[0037] In order to make the frequency of the high-frequency resonant mode adjustable, component 2 7 and component 3 10 can be set on conductor 2 6 and conductor 3 8 to control the resonant frequency of the antenna. Component 2 7 is located in the middle of conductor 2 6, and component 3 10 is located on the side of conductor 3 8 close to the ground plane 1. Similarly, component 2 7 and component 3 10 can be conductors, inductive elements and / or capacitive elements, and the inductive elements have inductive components, which can be lumped elements, such as chip inductors, chip resistors, etc., or distributed elements, such as conductors, coils, etc. Capacitive elements have capacitive components, which can be lumped elements, such as chip capacitors, varactor diodes, transistors, etc., or distributed elements, such as parallel conductors, transmission lines, etc. In order to obtain a specific capacitance, a combination of multiple elements can be used instead of capacitive elements.

[0038] Figure 2 Another embodiment of the adjustable miniaturized antenna structure of the utility model is shown when the printed circuit board has two or more layers.

[0039] In actual use, when the printed circuit board is a multilayer board with two or more layers, the other end of the wire 1 4 is connected to the wire 3 8, and the other end of the wire 2 6 is connected to the wire 3 8. Figure 1 and Figure 2 The solid and dashed lines shown in the figure are intended to distinguish different layers of a multi-layer printed circuit board with two or more layers.

[0040] In practical applications, the adjustable miniaturized antenna uses an electric field coupling structure for feeding, and the electric field line density can be changed by changing the capacitance value of the components on the feeding, thereby changing the coupling coefficient of the antenna. Figure 3 As shown in the Smith circle diagram, by changing the capacitance of the component 1 5, the input impedance of the antenna can be very conveniently controlled; for the antenna, the ground plate and the wire 2, the wire 3 and the wire 4 form a ring current mode, and the resonant frequency of the ring current mode can be changed by changing the components configured in the ring current mode, such as Figure 4 As shown in the return loss, by changing the capacitance of the component 27, the resonant frequency of the antenna can be easily controlled, indicating the important indicators of the antenna, making the debugging in the actual product more convenient and improving the design efficiency of the antenna.

[0041] The present invention is not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An adjustable miniaturized antenna, comprising a ground plane, a clearance area, an excitation structure and a resonance structure, characterized in that: The grounding plate is laid on two or more layers of printed circuit boards; the clearance area is a side opening of the grounding plate; the excitation structure is arranged in the clearance area and connected to the grounding plate; the resonance structure includes a toroidal current mode arranged at the edge of the clearance area; wherein the excitation structure and the resonance structure are both configured with components for adjusting the resonance frequency.

2. The adjustable miniaturized antenna according to claim 1, characterized in that: The excitation structure includes a feeder and a conductor one, wherein one end of the conductor one is connected to the feeder, and the feeder is connected to the ground plate.

3. The adjustable miniaturized antenna according to claim 2, characterized in that: The other end of the first conductor is connected to a grounding plate at a side of the clearance area.

4. The adjustable miniaturized antenna according to claim 2, characterized in that: The other end of the wire 1 is connected to the ring current module.

5. The adjustable miniaturized antenna according to claim 2, characterized in that: The excitation structure also includes n components for controlling the impedance matching of the antenna, where n is an integer greater than or equal to 1, and the components are connected to the middle of the first conductor.

6. The adjustable miniaturized antenna according to claim 1, characterized in that: The annular current mode includes wire 2, wire 3 and wire 4, one end of wire 2 is connected to the grounding plate on the side of the clearance area, wherein one end of wire 3 and wire 4 are respectively connected to the grounding plate on the side of the clearance area, and the other ends of wire 3 and wire 4 are suspended.

7. The adjustable miniaturized antenna according to claim 6, characterized in that: The other end of the second conductor is connected to the grounding plate on the other side of the clearance area.

8. The adjustable miniaturized antenna according to claim 6, characterized in that: The other end of the wire 2 is connected to the wire 3.

9. The adjustable miniaturized antenna according to claim 6, characterized in that: The number of components on the conductor three for adjusting the resonance frequency is h, where h is an integer greater than or equal to 1, and the components are connected to a side of the conductor three close to the ground plate.

10. The adjustable miniaturized antenna according to claim 6, characterized in that: The number of components for adjusting the resonant frequency on the second conductor is m, where m is an integer greater than or equal to 1, and the components are connected to the middle of the second conductor.

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