CN201210523Y - Dual-polarized antenna - Google Patents

Abstract

The utility model discloses a dual polarized antenna, it includes a ground connection portion, a horizontal polarization portion and a vertical polarization portion. The horizontal polarization part comprises a first feed-in part, one edge of the first feed-in part extends to form a first transceiving part, the other edge of the first feed-in part obliquely extends to form a first connecting part, the tail end of the first connecting part is connected with one edge of the grounding part, and the first transceiving part and the grounding part form an analog capacitor. The vertical polarization part comprises a second connecting part which extends from one edge of the grounding part, a second feed-in part extends from the tail end of the second connecting part, a second transceiving part extends from the tail end of the second feed-in part, and a part of the second transceiving part is perpendicular to the first transceiving part and forms an analog capacitor with the grounding part. The gain of the antenna can be improved by the two analog capacitors.

Description

dual polarized antenna

technical field

The utility model relates to a dual-polarized antenna, in particular to a horizontally and vertically polarized dual-polarized antenna.

Background technique

Most existing dual-polarized antennas use two pairs of orthogonal half-wave dipole structures, which relatively simply realize the field orthogonality of the two pairs of half-wave dipoles, thereby realizing dual polarization.

However, although the above-mentioned dual-polarized antenna has a simple structure, the gain of the antenna is low because only two orthogonal half-wave dipoles are used to realize the transmitting and receiving function.

Utility model content

The purpose of this utility model is to provide a dual-polarization antenna which can improve the antenna gain in view of the above-mentioned deficiency of the background technology.

In order to achieve the above purpose, the dual-polarization antenna provided by the utility model includes a grounding part, a horizontal polarization part and a vertical polarization part. The horizontal polarization part includes a first feed-in part, a first transceiver part extends from one edge of the first feed-in part, and a first connection part extends obliquely from the other edge of the first feed-in part, and the end of the first connection part is connected to the ground An edge of the portion is connected, and the first transceiver portion and the ground portion form an analog capacitance. The vertical polarization part includes a second connection part protruding from an edge of the ground part, a second feed-in part extends from the end of the second connection part, a second transceiver part extends from the end of the second feed-in part, and the second transceiver A part of the part is perpendicular to the first transceiver part and forms an analog capacitance with the ground part.

From the above, the dual-polarized antenna of the present invention is composed of the horizontal polarization part comprising the first feeding part, the first transceiving part and the first connecting part and the horizontal polarized part comprising the second connecting part, the second feeding part and the second transceiving part. The vertical polarized part and the ground part connected with the horizontal polarized part and the vertical polarized part realize the transceiving function, and a part of the first transceiving part and the second transceiving part respectively form an analog capacitor with the ground part, through the two analog capacitors Not only can the bandwidth of the antenna be increased, but also the gain of the antenna can be increased, thereby improving the transceiving performance and efficiency of the dual-polarized antenna of the utility model.

Description of drawings

Fig. 1 is a perspective view of an embodiment of the dual-polarized antenna of the present invention.

Fig. 2 is a partially enlarged view of part IX in Fig. 1 .

FIG. 3 is a top view of the dual-polarized antenna shown in FIG. 1 .

The reference signs in the figure are explained as follows:

1st feed-in part 10 1st feed-in point 11

The first sending and receiving department 20 The first connection department 30

Grounding part 40 First grounding part 41

The first grounding point 411 convex part 412

Gap 413 Connecting to the Ministry of Land 42

The second grounding part 43 The second grounding point 431

Open slot 44 2nd connecting part 50

The second feed-in part 60 feed-in section 61

The second feed point 611 The third connection part 62

The second sending and receiving department 70 the first section 71

Section 2 72

Detailed ways

In order to illustrate the technical content, structural features, achieved goals and effects of the present utility model in detail, the following examples are given in detail with accompanying drawings.

Please refer to Fig. 1, Fig. 2 and Fig. 3, the dual-polarized antenna of the present invention comprises a strip-shaped first feed-in portion 10 arranged front and back, and the rear edge of the first feed-in portion 10 extends backwards to the left and right sides. A plate-shaped first transceiving portion 20 is formed extending sideways. A first feed-in point 11 is provided at the front end of the first feed-in portion 10 , and a plate-shaped first connecting portion 30 is formed protruding forward from the front of the left edge of the first feed-in portion 10 .

The front edge of the first connecting portion 30 extends forward and at the same time extends left and right to form a first grounding portion 41 in a substantially rectangular plate shape; the first grounding portion 41 is arranged in parallel with the first transceiver portion 20, thereby forming an analog capacitance. The first grounding portion 41 is provided with a first grounding point 411 near the first feeding portion 10 . A protrusion 412 protrudes forward from the left side of the front edge of the first ground portion 41 , and a protrusion 412 protrudes backward from the left side of the rear edge of the first ground portion 41 . A notch 413 is provided at the corner where the rear edge and the right edge of the first grounding portion 41 are connected, and the notch 413 is provided for adapting the dual-polarized antenna of the present invention to be installed on electronic products. The rear portion of the left edge of the first ground portion 41 protrudes to the left with a ground portion 42, and the end of the ground portion 42 extends to the left while extending forward and backward to form a second ground portion 43 in the shape of a rectangular plate. The front edge of the grounding portion 43 is flush with the front edge of the convex portion 412 located at the front of the first grounding portion 41 , and the rear edge of the second grounding portion 43 is flush with the rear edge of the first transceiver portion 20 . The first ground portion 41 , the second ground portion 43 and the ground portion 42 form the ground portion 40 and surround two open slots 44 . The second ground portion 43 has a second ground point 431 near the corner of the left edge and the front edge.

A plate-shaped second connecting portion 50 protrudes forward left from the front of the left edge of the second grounding portion 43 . The front edge of the second connecting part 50 extends forward and then extends to the left to form a plate-shaped feed-in section 61. The right end of the feed-in section 61 is provided with a second feed-in point 611. The feed-in section 61 A third connecting portion 62 vertically extends upward from the left edge. The third connection part 62 and the feed-in section 61 form the second feed-in part 60 . The upper edge of the third connecting part 62 extends to the left and at the same time extends forward and backward to form a plate-shaped first section 71. The first section 71 is perpendicular to the first transceiver part 20, and the first section The segment 71 and the second grounding portion 43 are arranged in parallel, so that the first segment 71 and the second grounding portion 43 form an analog capacitance, and the analog capacitance formed by the first transceiver portion 20 and the first grounding portion 41 not only The bandwidth of the dual-polarized antenna of the present invention can be increased, and the input impedance of the dual-polarized antenna of the present invention can be adjusted, so that the input impedance of the dual-polarized antenna can be matched with the characteristic impedance of the feeder to reduce return loss and improve The gain of the antenna, thereby improving the transmitting and receiving performance and efficiency of the dual-polarized antenna of the utility model. A rear end of the right edge of the first section 71 bends obliquely to the right rear and extends in an arc to form a second section 72 . The second section 72 and the first section 71 form the second transceiver unit 70 . Wherein the third connection part 62 can make the second transceiver part 70 and other parts of the dual-polarized antenna of the present invention be arranged in a ladder shape, so that when it is arranged in the electronic product, it can adapt to the shape of the internal space of the electronic product, and then the present invention can be made The dual-polarized antenna of the utility model is conveniently assembled on the electronic product, and can avoid the phenomenon that the dual-polarized antenna of the utility model is lifted.

The first feed-in part 10, the first transceiving part 20 and the first connecting part 30 constitute a horizontally polarized part, and the horizontally polarized part and the ground part 40 form an inverted F-shaped antenna (PlanarInverted-F Antenna, PIFA). The sum of the electrical lengths of the first feeding part 10, the first transceiving part 20, and the first connecting part 30 of the horizontally polarized part of the shaped antenna is approximately equal to a quarter wavelength of an electromagnetic wave with a frequency of 2400 MHz. The second connection part 50, the second feed-in part 60 and the second transceiver part 70 constitute a vertically polarized part, and the vertically polarized part and the ground part 40 also form an inverted F-shaped antenna, and the vertically polarized part of the inverted F-shaped antenna The sum of the electrical lengths of the second connecting part 50 , the second feeding part 60 and the second transceiving part 70 is approximately equal to a quarter wavelength of the electromagnetic wave with a frequency of 2400 MHz.

The ground part 40 is composed of a first ground part 41, a second ground part 43 and a ground connection part 42, so that the horizontal polarization part and the vertical polarization part can be avoided due to the complete separation of the first ground part 41 and the second ground part 43. part because the ground part is too small to reduce the efficiency, and can reduce the first ground part 41 and the second ground part 43 due to the complete connection between the horizontal polarization part and the mutual interference between the vertical polarization part, so as to improve The transceiver performance of the dual-polarization antenna of the utility model.

When the dual-polarized antenna of the present invention works, the first feeding part 10, the first transmitting and receiving part 20, and the first connecting part 30 of the horizontally polarized part resonate with electromagnetic waves with a frequency of 2400-2500 MHz to transmit and receive Wireless Fidelity , WIFI for short) corresponds to the horizontally polarized electromagnetic wave signal. The second connection part 50 , the second feeding part 60 , and the second transceiver part 70 of the vertical polarization part resonate with electromagnetic waves with a frequency of 2400-2500 MHz to transmit and receive vertically polarized electromagnetic wave signals corresponding to the WLAN protocol. Therefore, the horizontal polarization part and the vertical polarization part can complement each other, and the gain of the dual-polarization antenna of the present invention can be improved.

As mentioned above, the dual-polarized antenna of the present invention passes through the horizontal polarization part including the first feeding part 10, the first transceiving part 20, and the first connecting part 30 and includes the second connecting part 50, the second feeding part 60, The vertically polarized part of the second transceiver part 70 is realized with the inverted F-shaped antenna formed by the ground part 40 respectively, and can transmit and receive electromagnetic wave signals in the frequency band area of 2400-2500Mhz corresponding to the wireless area network protocol. The first sections 71 of the two transceiver parts 70 and the ground part 40 respectively form an analog capacitance, through which the two analog capacitors can not only increase the bandwidth of the antenna, but also increase the gain of the antenna, thereby improving the performance and efficiency of the antenna for transmitting and receiving.

To sum up, the utility model dual-polarized antenna can achieve the above-mentioned effects through the structure disclosed above, and the application of the utility model meets the requirements of the patent, so the application is filed according to the law. However, the above disclosures are only preferred embodiments of the present utility model, and cannot limit the scope of rights of the present utility model. All equivalent modifications or changes made by those skilled in the art according to the spirit of the utility model shall be covered by the claims of the utility model. For example, the first ground part and the second ground part may also be connected by a ground part from one end of the left edge of the first ground part. For example, the second connecting portion may also protrude from the rear of the left edge of the grounding portion to the upper left.

Claims (10)

1. A dual-polarized antenna, characterized in that: it includes a grounding portion, a horizontal polarization portion and a vertical polarization portion, the horizontal polarization portion includes a first feed-in portion, an edge of the first feed-in portion A first transceiver part is extended, the other edge of the first feeding part extends obliquely with a first connection part, the end of the first connection part is connected to an edge of the ground part, and the first transceiver part and the ground part form an analog Capacitance; the vertically polarized part includes a second connection part protruding from an edge of the ground part, a second feeding part extends from the end of the second connecting part, and a second transceiver extends from the end of the second feeding part part, a part of the second transceiver part is perpendicular to the first transceiver part and forms an analog capacitance with the ground part. 2. The dual-polarized antenna according to claim 1, wherein the ground portion comprises a first ground portion extending from the first connecting portion, an edge protruding from the first ground portion An extended ground connection part and a second ground part extended from the end of the ground connection part, the first ground part, the second ground part and the ground connection part are surrounded by an open groove; the second connection part It is formed by protruding from an edge of the second grounding portion. 3. The dual-polarized antenna according to claim 1, characterized in that: the second transceiving portion comprises a first section extending from the end of the second feeding portion and a section extending from the first section The second section formed by protruding from the inner edge of one end of the section, and the first section is perpendicular to the first transceiver part. 4. The dual-polarized antenna according to claim 3, wherein the second section is arc-shaped. 5. The dual-polarized antenna according to claim 1, wherein the second feed-in portion comprises a feed-in section extending from the end edge of the second connecting portion and a feed-in section extending from the feed-in portion. A third connecting portion formed by extending upward from an edge of the section. 6. The dual-polarized antenna according to claim 1, wherein a notch is opened at a corner of the ground portion. 7 . The dual-polarized antenna according to claim 1 , wherein a first feeding point is provided at one end of the first feeding portion connected to the first connecting portion. 8 . 8. The dual-polarized antenna according to claim 7, wherein a first grounding point is provided on the grounding part near the first feeding part. 9. The dual-polarized antenna according to claim 1, wherein a second feeding point is provided at one end of the second feeding portion connected to the second connecting portion. 10 . The dual-polarized antenna according to claim 9 , wherein a second grounding point is provided at a corner of the grounding portion near its left edge and front edge. 11 .

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