CN212366210U - Antenna feeder structure - Google Patents

Abstract

The utility model discloses an antenna feeder structure sets up in antenna substrate's headroom district for link together the irradiator of antenna and antenna substrate's component district, feeder structure including set up in the antenna tie point in headroom district, the antenna tie point through first impedance line and first matching network with the component district is connected, the antenna tie point through the second impedance line with the ground circuit of base plate connects. By using the feeder structure, the radiator of the antenna can be connected with the element area and the grounding circuit of the substrate only through one feed point, so that the cost of one contact spring or thimble can be saved, the size of the antenna structure is reduced, the space in the device for accommodating the antenna is increased, and more functional units can be conveniently installed.

Description

Antenna feeder structure

Technical Field

The utility model relates to a wireless communication technology field, it is specific, relate to an antenna feeder structure.

Background

The TWS Bluetooth headset market is coming to crazy development under the big trend of smart phone non-hole. A TWS bluetooth headset may bring a completely wireless listening experience. Since the TWS bluetooth headset does not have wires for connecting the left and right units, the battery and the control circuit of the TWS bluetooth headset must be embedded in the cavity of the headset, the cavity has a limited volume, and manufacturers add a plurality of additional functions, such as voice assistance, gesture control, active noise reduction, and the like, to further compress the space in the cavity of the headset. Therefore, the structure of each component in the earphone needs to be optimized, so that the available space in the cavity of the earphone is increased, more functional units are convenient to arrange, and the functions of the earphone are increased. In addition, the price of the TWS Bluetooth headset is high due to the technology, the process, the brand and the like of the TWS Bluetooth headset.

The performance of the antenna as an indispensable device for bluetooth data transmission fundamentally affects the experience of consumers, and a PIFA antenna is often used in a TWS bluetooth headset, as shown in fig. 1, a feeder line 3 and a ground line 4 are arranged between a radiation patch 1 and a motherboard 2 of a conventional PIFA antenna, so that two contact points, such as two contact shrapnels or thimbles, need to be arranged on the motherboard to realize feeding and grounding, but the two contact points occupy a larger space on the motherboard, resulting in limited arrangement of other functional units in the TWS bluetooth headset.

SUMMERY OF THE UTILITY MODEL

The utility model provides an antenna feeder structure makes only through a contact point alright realize connecting between the irradiator of antenna and the base plate component district to reduce the whole volume of antenna.

In order to achieve the above object, the utility model provides an antenna feeder structure sets up in antenna substrate's headroom district for link together the irradiator of antenna and antenna substrate's component district, feeder structure including set up in the antenna tie point in headroom district, the antenna tie point through first impedance line and first matching network with the component district is connected, the antenna tie point through the second impedance line with the ground circuit of base plate connects.

Preferably, a second matching network is further disposed between the second impedance line and the ground circuit of the substrate.

Preferably, the substrate is a PCB board.

Preferably, the first impedance line and the second impedance line are microstrip transmission lines.

Preferably, the antenna connection point is a contact spring or a thimble.

Preferably, the first matching network is a microstrip single-branch matching circuit.

Preferably, the second matching network is a microstrip single-branch matching circuit.

As can be seen from the above description and practice, an antenna feeder structure of the present invention provides an antenna connection point in the clearance area of the antenna substrate, and is connected to the component area and the ground circuit through two impedance lines and a matching network, respectively. By using the feeder structure, the radiator of the antenna can be connected with the element area and the grounding circuit of the substrate only through one feed point, the cost of contacting an elastic sheet or an ejector pin can be saved, the size of the antenna structure is reduced, the space in equipment for accommodating the antenna is increased, and more functional units can be conveniently installed. The antenna feeder structure is not only suitable for the traditional PIFA antenna, but also suitable for the traditional MONOPOLE antenna, and the antenna feeder structure can be connected with a main board only through one feeder.

Drawings

Fig. 1 is a schematic structural diagram of a conventional PIFA antenna.

Fig. 2 is a schematic diagram of an antenna feeder structure according to an embodiment of the present invention.

In the figure:

1. a radiation patch;

2. a main board;

3. a feed line;

4. a ground line;

5. a substrate 51, a clearance area 52, a component area;

6. an antenna connection point;

7. a first impedance line;

8. a first matching network;

9. a second impedance line;

10. a second matching network.

Detailed Description

Exemplary embodiments will now be described more fully with reference to the accompanying drawings. The exemplary embodiments, however, may be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. In the present disclosure, the terms "include", "arrange", "disposed" and "disposed" are used to mean open-ended inclusion, and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first," "second," and the like are used merely as labels, and are not limiting as to the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 2 is a schematic diagram of an antenna feeder structure according to an embodiment of the present invention. Referring to fig. 2, the antenna feed line structure provided in this embodiment is disposed in a clearance area 51 on a substrate 5 of an antenna, and is used for connecting a radiator (not shown) of the antenna with an element area 52 on the substrate 5 to implement signal transceiving. The element region 52 is provided with a signal processing unit (not shown) capable of converting a signal received by the radiator and transmitting the signal to the radiator to radiate the signal through the radiator. The internal structure of the device region 52 is not relevant to the present embodiment, and will not be described herein.

In this embodiment, the substrate 5 is a PCB board. As shown in fig. 2, the feed line structure includes an antenna connection point 6 disposed in the clearance area 51, and the antenna connection point 6 may be a contact spring or a thimble or other known feed point structure, in which case the antenna connection point 6 is a contact spring. One side of the antenna connection point 6 is connected to the element region 52 via the first impedance line 7 and the first matching network 8, and the other side of the antenna connection point 6 is connected to a ground circuit (not shown) of the substrate 5 via the second impedance line 9.

In this embodiment, the first impedance line 7 and the second impedance line 9 are microstrip transmission lines laid on the PCB board. The first matching network 8 is a microstrip single-stub matching circuit, although the first matching network 8 may also be another known matching circuit, such as an L-type matching circuit or an Π -type matching circuit, and the first matching network 8 is configured to adjust the impedance between the antenna radiator and the element region 52 to implement impedance matching.

A second matching network 10 is preferably further disposed between the second impedance line 9 and the ground circuit for adjusting the impedance between the antenna radiator and the ground circuit to realize impedance matching. Also, in this embodiment, the second matching network 10 is a microstrip single-tap matching circuit, but other known matching circuits, such as an L-type matching circuit or a Π -type matching circuit, may be used.

Through foretell feeder structure, the radiator of antenna can only realize through a feed point with the component area of base plate and ground circuit's connection, can save the cost of a contact shell fragment or thimble, still reduced antenna structure's volume simultaneously, increased the space in the equipment that holds the antenna, be convenient for install more functional unit.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (7)

1. An antenna feeder structure arranged in a clearance area of an antenna substrate and used for connecting a radiator of an antenna with an element area of the antenna substrate, wherein the feeder structure comprises an antenna connection point arranged in the clearance area, the antenna connection point is connected with the element area through a first impedance line and a first matching network, and the antenna connection point is connected with a grounding circuit of the substrate through a second impedance line.

2. An antenna feed structure as claimed in claim 1 wherein a second matching network is provided between the second impedance line and the ground circuit of the substrate.

3. The antenna feed structure of claim 1 wherein the substrate is a PCB board.

4. An antenna feed structure as claimed in claim 3 wherein the first impedance line and the second impedance line are microstrip transmission lines.

5. An antenna feed line structure as claimed in claim 1 wherein the antenna connection point is a contact clip or pin.

6. An antenna feed structure as claimed in claim 1 wherein the first matching network is a microstrip single leg matching circuit.

7. An antenna feed structure as claimed in claim 2 wherein the second matching network is a microstrip single leg matching circuit.

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