TW202211543A - Antenna structure - Google Patents

Abstract

An antenna structure includes a h-shaped radiator and a first radiator. The h-shaped radiator has corresponding first and second segments, first and second ends located at the first segment, and a third end located at the second segment. The first segment is longer than the second segment. The h-shaped radiator further includes a shorting point and a feeding point, and the shorting point and the feeding point are respectively located at the first and second segment. The first radiator is connected to the second segment.

Description

Antenna structure

The present invention relates to an antenna structure, especially an antenna structure suitable for multiple frequency bands.

At present, the application of communication technology in various fields is more and more extensive, and the development of communication technology is becoming more and more mature.

In order to make the communication technology richer and more multifunctional, the antenna needs to be suitable for signals in different frequency bands. However, the space of the communication device equipped with the antenna is limited. If multiple antennas are simultaneously arranged in the limited space of the same communication device, it is necessary to design to reduce the space occupied by the antenna.

Therefore, how to reduce the occupied space of the antenna and ensure that the antenna is suitable for different frequency bands and reduce the occupied space is a problem that the industry is eager to invest in research and development resources to solve.

In view of this, one objective of the present invention is to provide a multi-frequency antenna that can solve the above problems.

In order to achieve the above objective, an embodiment of the present invention discloses an antenna structure including an h-shaped radiator and a first radiator. The h-shaped radiator has a corresponding first section and a second section, a first end and a second end located in the first section, and a third end located in the second section, wherein the first section is longer than the second section, and the first section is longer than the second section. One end is located on the opposite side of the h-shaped radiator relative to the second end and the third end. The h-shaped radiator further has a short-circuit point and a feed-in point, wherein the short-circuit point is located in the first section and the feed-in point is located in the second section. The first radiator is connected to the second segment.

In one or more embodiments of the present invention, the short-circuit point is separated from the first end by a first distance in an axial direction parallel to the first segment, wherein a ratio between the first distance and the length of the antenna structure in the axial direction is between 3 : 20 to 1:5, the feed point and the first end are separated by a second distance in the axial direction, wherein the ratio of the second distance to the length is between 3:10 and 7:20.

In one or more embodiments of the present invention, the antenna structure further includes a conductive foil, wherein the conductive foil is connected to the first section of the h-shaped radiator.

In one or more embodiments of the present invention, the first radiator is U-shaped, wherein the first radiator has a corresponding first section and a second section, wherein the first section of the first radiator and the h-shaped radiator The first sections of the body are arranged correspondingly and spaced apart, and the second section of the first radiator is connected to the second section of the h-shaped radiator.

In one or more embodiments of the present invention, the antenna structure further includes a rectangular radiator connected to the connection between the h-shaped radiator and the first radiator, and the long axis of the rectangular radiator is substantially parallel to the length of the h-shaped radiator. first paragraph.

In one or more embodiments of the present invention, the h-shaped radiator and the first radiator together form a planar structure.

In one or more embodiments of the present invention, the antenna structure further includes a sidewall radiator, wherein the sidewall radiator is located on the edge of the connection between the h-shaped radiator and the first radiator.

In one or more embodiments of the present invention, the antenna structure further includes a connection body and a second radiator, wherein the second radiator is parallel to the h-shaped radiator, and the connection body is connected to the second radiator and the h-shaped radiator between.

In one or more embodiments of the present invention, the second radiator is rectangular or U-shaped.

In one or more embodiments of the present invention, the antenna structure further includes an adjustment circuit, wherein the adjustment circuit is connected between the first segment and the second segment of the h-shaped radiator or connected to the second segment of the h-shaped radiator and between the first radiators.

To sum up, the antenna structure utilizes the design of the h-shaped radiator to provide a better matched excitation mode, so that the antenna structure can be applied to multiple frequency bands, even multiple high-frequency frequency bands. In addition, the h-shaped radiator can be connected to the second radiator by using a connecting body, thereby forming a three-dimensional stack structure. The design of the side wall radiator can increase the radiation area, adjust the impedance characteristics of low frequency and increase the bandwidth of low frequency. In addition, the h-shaped radiator of the antenna structure can be further provided with an adjustment circuit, thereby making the antenna structure suitable for multiple frequency bands, increasing the isolation between the radiators and reducing the occupied volume of the antenna structure.

The present invention may be embodied in many different forms. Representative embodiments are shown in the accompanying drawings and will be described in detail herein. This disclosure contains examples or illustrations of principles, and aspects of this disclosure are not to be limited to the embodiments shown.

Please refer to FIG. 1. FIG. 1 is a schematic front view of an antenna structure 100 according to an embodiment of the present invention, respectively. In one embodiment of the present invention, the antenna structure 100 includes an h-shaped radiator 110 and a first radiator 130 , wherein the h-shaped radiator 110 and the first radiator 130 may be integrally formed. The h-shaped radiator 110 has a corresponding first segment 111 , a second segment 112 and an intermediate segment 113 connected between the first segment 111 and the second segment 112 , wherein the first segment 111 and the second segment 112 may be mutually Parallel. In addition, the h-shaped radiator 110 further includes a first end 114 and a second end 115 located in the first segment 111 and a third end 116 located in the second segment 112 , wherein the first segment 111 is longer than the second segment 112 , and The first end 114 is located on one side of the middle section 113, and the second end 115 and the third end 116 are located on the other side of the middle section 113. The h-shaped radiator 110 further has a short-circuit point 117 and a feeding point 118, wherein the short-circuit point 117 is located in the first section 111 and the feed point 118 is located in the second section 112 . The first radiator 130 is connected to the second segment 112 . The h-shaped radiator 110 provides a good excitation mode, which helps other radiators connected to it to generate multiple resonance modes (eg, a mid-frequency resonance mode or a high-frequency resonance mode).

Specifically, the h-shaped radiator 110 and the first radiator 130 together form a planar structure, and the h-shaped radiator 110 and the first radiator 130 may be made of metal materials, such as copper, silver, Aluminum, iron or alloys thereof, the present invention is not limited thereto. The short-circuit point 117 can be electrically connected to the structure having a grounding function, and the feed-in point 118 can be used to feed the electromagnetic wave signal. The first end 114 and the short-circuit point 117 are separated by a first distance D1 in the axial direction X parallel to the first segment 111 , wherein the ratio of the first distance D1 to the length L of the antenna structure 100 in the axial direction X is 3:20 To 1:5, the feeding point 118 and the first end 114 are separated by a second distance D2 in the axial direction X (that is, the translation distance drawn by the feeding point 118 relative to the first end 114 along the axial direction X), The ratio of the second distance D2 to the length L of the antenna structure 100 in the axial direction X ranges from 3:10 to 7:20, and the length L is actually less than or equal to 10 mm, but the invention is not limited to this .

Besides, the first radiator 130 is U-shaped, wherein the first radiator 130 has a corresponding first section 131 and a second section 132 , wherein the first section 131 of the first radiator 130 and the h-shaped radiator The first sections 111 of the 110 correspond to each other and are spaced apart, and the second section 132 of the first radiator 130 is connected to the second section 112 of the h-shaped radiator 110. The h-shaped radiator 110 and the U-shaped first radiator 130 The connection relationship facilitates multiple resonance modes, so that the antenna structure 100 is suitable for more frequency bands. In one embodiment, the first segment 111 and the second segment 112 of the h-shaped radiator 110 extend along the axis X, and the first segment 131 and the second segment 132 of the first radiator 130 also extend along the axis X extend.

Please refer to FIG. 2 , which illustrates a schematic front view of the antenna structure 100 according to some embodiments of the present invention. In one embodiment of the present invention, the antenna structure 100 further includes a conductive foil 120 having a grounding function, wherein the conductive foil 120 is connected to the first section 111 of the h-shaped radiator 110 . Specifically, the conductive foil 120 is connected to the side of the first segment 111 away from the second segment 112 . Besides, the conductive foil body 120 can be made of copper foil or aluminum foil, for example, the invention is not limited thereto.

Please refer to FIG. 3 , which is a schematic front view of the antenna structure 100 according to some embodiments of the present invention. In one embodiment of the present invention, the antenna structure 100 further includes a rectangular radiator 140 connected to the connection between the h-shaped radiator 110 and the first radiator 130, and the long axis of the rectangular radiator 140 is substantially parallel to the h-shaped radiation The first segment 111 of the body 110 . The h-shaped radiator 110 further has another feeding point 119 , wherein the feeding point 119 is disposed adjacent to the rectangular radiator 140 , thereby exciting the antenna structure 100 to generate more resonant frequency states.

Please refer to FIG. 4. FIG. 4 shows a three-dimensional schematic diagram of the antenna structure 100 according to some embodiments of the present invention. The antenna structure 100 further includes a sidewall radiator 150, wherein the sidewall radiator 150 is perpendicular to the h-shaped radiator 110, and the sidewall radiates The body 150 is located on the edge where the h-shaped radiator 110 connects with the first radiator 130 . Specifically, the sidewall radiator 150 is located at the edge of the h-shaped radiator 110 and the first radiator 130 away from the first section 111 of the h-shaped radiator 110 . The design of the sidewall radiator 150 can increase the radiation area and adjust the low frequency impedance. characteristics and increase the bandwidth of low frequencies.

Please refer to FIG. 5. FIG. 5 is a schematic perspective view of the antenna structure 100 according to some embodiments of the present invention. The first radiator 130 further includes an extension structure 133 a located between the first section 131 and the second section 132 of the first radiator 130 . Specifically, the extension structure 133 a is rectangular, and the extension structure 133 a is connected to the second section 132 , so as to increase the low frequency bandwidth applicable to the antenna structure 100 .

Please refer to FIG. 6 . FIG. 6 is a schematic perspective view of the antenna structure 100 according to some embodiments of the present invention. The first radiator 130 further includes two extending structures 133b located between the first section 131 and the second section 132 of the first radiator 130 . Specifically, the two extending structures 133b are rectangular and are connected to the second section 132 , and the two extending structures 133b are spaced apart from each other to increase the low frequency bandwidth applicable to the antenna structure 100 .

Please refer to FIG. 7 . FIG. 7 is a schematic perspective view of the antenna structure 100 according to some embodiments of the present invention. The antenna structure 100 further includes a connecting body 160 and a second radiator 170a, wherein the second radiator 170a is parallel to the h-shaped radiator 110 (for example, the h-shaped radiator 110 and the second radiator 170a respectively extend along two parallel planes) ), and the connecting body 160 is connected between the second radiator 170a and the h-shaped radiator 110 to form a stacked structure together. Specifically, the connecting body 160 is located in the second section 112 of the h-shaped radiator 110 . In addition, the h-shaped radiator 110 further has another feeding point 119 , and the feeding point 119 is also approximately located at the position where the h-shaped radiator 110 and the connecting body 160 meet. Specifically, the connector 160 can be a Pogo Pin or a metal spring, the second radiator 170a can be a rectangle, and the h-shaped radiator 110 and the second radiator 170a can be sandwiched by a substrate (for example, a insulating substrate), but the present invention is not limited to this.

Please refer to FIG. 8. FIG. 8 shows a three-dimensional schematic diagram of the antenna structure 100 according to some embodiments of the present invention. FIG. 8 is substantially the same as FIG. 7, and the main difference is that the second radiator 170b in FIG. 8 is U-shaped. Specifically, the h-shaped radiator 110 and the second radiator 170b are parallel to each other (for example, the h-shaped radiator 110 and the second radiator 170b respectively extend along two parallel planes), and the second radiator 170b has corresponding The first section 171b and the second section 172b, wherein the vertical projection of the first section 171b of the second radiator 170b to the h-shaped radiator 110 and the first radiator 130 is formed on the first section 111 and the first section of the h-shaped radiator 110 on the first segment 131 of the first radiator 130 . In addition, the vertical projection of the second section 172b of the second radiator 170b to the h-shaped radiator 110 and the first radiator 130 is formed on the second section 112 of the h-shaped radiator 110 and the second section of the first radiator 130 132.

Please refer to FIG. 9. FIG. 9 illustrates a schematic front view of the antenna structure 100a according to some embodiments of the present invention. In some embodiments of the present invention, the antenna structure 100a includes an h-shaped radiator 110, a first radiator 130 and an adjustment circuit 180, and the adjustment circuit 180 may be a capacitor, an inductor or a resistor. ), the type of the adjustment circuit 180 can be selected according to actual needs, and the present invention is not limited to this. For example, the adjustment circuit 180 (eg, a capacitor) is connected between the first segment 111 and the second segment 112 of the h-shaped radiator 110 , and the adjustment circuit 180 is adjacent to the second end 115 and the second end of the h-shaped radiator 110 Three ends 116 . In other embodiments of the present invention, the adjustment circuit 180 (eg, an inductor) is connected between the second section 112 of the h-shaped radiator 110 and the first radiator 130 , for example, the adjustment circuit 180 is connected to the h-shaped radiator between the second segment 112 of the body 110 and the first segment 131 of the first radiator 130 . Or the adjustment circuit 180 is connected between the second section 112 of the h-shaped radiator 110 and the second section 132 of the first radiator 130 . Specifically, when the adjusting circuit 180 is an inductor, the applicable frequency band can be increased, and when the adjusting circuit 180 is a capacitor, it can provide isolation between different radiators, thereby reducing the volume of the antenna structure 100a and being applicable to various frequency bands.

To sum up, the antenna structure utilizes the design of the h-shaped radiator to provide a better matched excitation mode, so that the antenna structure can be applied to multiple frequency bands, even multiple high-frequency frequency bands. In addition, the h-shaped radiator can be connected to the second radiator by using a connecting body, thereby forming a three-dimensional stack structure. The design of the side wall radiator can increase the radiation area, adjust the impedance characteristics of low frequency and increase the bandwidth of low frequency. In addition, the h-shaped radiator of the antenna structure can be further provided with an adjustment circuit, thereby making the antenna structure suitable for multiple frequency bands, increasing the isolation between the radiators and reducing the occupied volume of the antenna structure.

Although the present disclosure has been disclosed as above in embodiments, it is not intended to limit the present disclosure. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure protects The scope shall be determined by the scope of the appended patent application.

100,100a: Antenna Structure 110: h-shaped radiator 111: First paragraph 112: Second paragraph 113: Middle section 114: First End 115: Second End 116: Third End 117: Short circuit point 118, 119: Feed Points 120: Conductive foil 130: First radiator 131: First paragraph 132: Second paragraph 133a: Extended structure 133b: extended structure 140: Rectangular Radiator 150: Sidewall Radiator 160: Connector 170a: Second radiator 170b: Second radiator 171b: First paragraph 172b: Second paragraph 180: Adjust the circuit D1: first distance D2: Second distance L: length X: Axial

To describe the attainment of the above and other advantages and features of the present invention, the principles briefly described above will be explained in more detail by reference to specific embodiments thereof, which are illustrated in the accompanying drawings. These drawings illustrate the invention only by way of illustration and are not to be considered limiting of its scope. The principles of the invention will be clearly explained, and additional features and details will be fully described, through the accompanying drawings, wherein: FIG. 1 to FIG. 3 respectively show schematic front views of the antenna structure according to some embodiments of the present invention; FIGS. 4 to 8 are schematic perspective views of antenna structures according to some embodiments of the present invention, respectively; and FIG. 9 is a schematic front view of an antenna structure according to some embodiments of the present invention.

Domestic storage information (please note in the order of storage institution, date and number) without Foreign deposit information (please note in the order of deposit country, institution, date and number) without

100: Antenna structure

110: h-shaped radiator

111: First paragraph

112: Second paragraph

113: Middle section

114: First End

115: Second End

116: Third End

117: Short circuit point

118: Feed Point

130: First radiator

131: First paragraph

132: Second paragraph

D1: first distance

D2: Second distance

L: length

X: Axial

Claims (10)

An antenna structure comprising: An h-shaped radiator has corresponding first and second sections, a first end and a second end located in the first section, and a third end located in the second section, wherein the first section is larger than the second section longer, the first end is located on the opposite side of the h-shaped radiator relative to the second end and the third end, the h-shaped radiator further has a short-circuit point and a feeding point, wherein the short-circuit point is located at the first segment and the feed point is located at the second segment; and The first radiator is connected to the second section. The antenna structure of claim 1, wherein the short-circuit point is separated from the first end by a first distance in an axial direction parallel to the first section, wherein the ratio of the first distance to the length of the antenna structure in the axial direction Between 3:20 and 1:5, the feed point is spaced apart from the first end by a second distance in the axial direction, wherein the ratio of the second distance to the length is between 3:10 and 7:20. The antenna structure of claim 1, further comprising a conductive foil, wherein the conductive foil is connected to the first section of the h-shaped radiator. The antenna structure of claim 1, wherein the first radiator is U-shaped, wherein the first radiator has a corresponding first segment and a second segment, wherein the first segment of the first radiator is the same as the The first sections of the h-shaped radiator correspond to each other and are spaced apart, and the second section of the first radiator is connected to the second section of the h-shaped radiator. The antenna structure of claim 1, further comprising a rectangular radiator connected to the connection between the h-shaped radiator and the first radiator, and the long axis of the rectangular radiator is substantially parallel to the length of the h-shaped radiator The first paragraph. The antenna structure of any one of claims 1 to 5, wherein the h-shaped radiator and the first radiator together form a planar structure. The antenna structure according to any one of claims 1 to 5, further comprising a sidewall radiator, wherein the sidewall radiator is located on the edge of the connection between the h-shaped radiator and the first radiator. The antenna structure according to any one of claims 1 to 5, further comprising a connecting body and a second radiator, wherein the second radiator is parallel to the h-shaped radiator, and the connecting body is connected to the second radiator between the body and the h-shaped radiator. The antenna structure of claim 8, wherein the second radiator is rectangular or U-shaped. The antenna structure according to any one of claims 1 to 5, further comprising an adjustment circuit, wherein the adjustment circuit is connected between the first segment and the second segment of the h-shaped radiator or connected to the h-shaped radiator between the second section of the radiator and the first radiator.

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