CN101071904A - Electronic devices and their antennas - Google Patents

Abstract

An antenna includes a substrate, a grounding element, a transmission element and a feeding element. The grounding element is arranged on the substrate and provided with a slot, the transmission element is arranged on the substrate and electrically connected with the grounding element, the feed-in element is arranged on the substrate and electrically connected with the transmission element, the feed-in element and the transmission element are positioned on the same surface of the substrate, and the feed-in element extends into the slot.

Description

Electronic devices and their antennas

【Technical field】

The present invention relates to an antenna.

【Background technique】

With the vigorous development of wireless communication and the trend of miniaturization of mobile communication products, the placement and space of antennas are compressed, which relatively causes difficulties in design, and some embedded miniature antennas have emerged as the times require. Generally speaking, the currently more commonly used miniature antennas include chip antennas (chip antennas) and planar antennas (planar antennas), etc. These types of antennas all have the characteristics of small size. Ceramic chip antenna (ceramic chipantenna) made of ceramic technology (LTCC), and there are many planar antenna designs, such as microstrip antenna (microstrip antenna), printed antenna (printed antenna) and planar inverted F antenna (Planar Inverted F antenna) Antenna, PIFA) etc. These antennas are widely used in wireless terminal equipment such as GSM, DCS, UMTS, WLAN and Bluetooth, such as mobile phones, wireless local area networks and so on.

FIG. 1 shows a conventional antenna 1 , including a radiator 13 and a signal line 16 , the signal line 16 is electrically connected to the radiator 13 . However, when the antenna 1 is installed in an electronic device (such as a notebook computer or a mobile phone), the connection position of the signal line 16 and the radiator 13 is not proper, so the routing of the signal line 16 is not easy.

【Content of invention】

In order to solve the problems of the prior art, the present invention provides an antenna, which includes a substrate, a ground element, a transmission element and a feed element. The ground element is arranged on the substrate and has a slot, the transmission element is arranged on the substrate and electrically connected with the ground element, and the feed element is arranged on the substrate and electrically connected with the transmission element, wherein the feed element and The transmission element is located on the same surface of the substrate, and the feed element extends into the slot.

The invention also provides an antenna, which includes a substrate, a ground element, a transmission element and a feed element. The substrate has a first surface and a second surface, the ground element is arranged on the first surface and has a slot, the transmission element is arranged on the first surface and is electrically connected with the ground element, and the feed element is arranged on the second surface and is electrically connected with the transmission element, wherein the projection of the feed-in element on the first surface overlaps with the groove.

The present invention further provides an electronic device, which includes a housing and an antenna. The antenna is disposed in the housing and mainly includes a substrate, a grounding element, a transmission element, and a feed-in element. The ground element is arranged on the substrate and has a slot, the transmission element is arranged on the substrate and electrically connected with the ground element, and the feed element is arranged on the substrate and electrically connected with the transmission element, wherein the feed element The transmission element is located on the same surface of the substrate, and the feed element extends into the slot.

The present invention further provides an electronic device, which includes a housing and an antenna. The antenna is disposed in the housing and mainly includes a substrate, a grounding element, a transmission element, and a feed-in element. The substrate has a first surface and a second surface, the ground element is arranged on the first surface and has a slot, the transmission element is arranged on the first surface and is electrically connected with the ground element, and the feed element is arranged on the second surface and is electrically connected with the transmission element, wherein the projection of the feed-in element on the first surface overlaps with the groove.

【Description of drawings】

FIG. 1 is a schematic diagram showing a conventional antenna.

FIG. 2 is a schematic diagram showing the antenna of the first embodiment of the present invention.

FIG. 3 is a schematic diagram showing that the antenna of the present invention is installed in an electronic device.

FIG. 4 shows the folded state of the antenna in FIG. 3 .

FIG. 5 is a schematic diagram showing a variation of the first embodiment of the present invention.

FIG. 6 is a schematic diagram showing an antenna of a second embodiment of the present invention.

FIG. 7 shows another schematic diagram of the antenna according to the second embodiment of the present invention.

【Detailed ways】

Referring to Fig. 2, the first embodiment of the antenna of the present invention is illustrated. The antenna 2 of the present invention includes a substrate 21 , a ground element 22 , a transmission element 23 , a feed element 24 and a cable 26 . The substrate 21 has a first surface S1, the grounding element 22 is arranged on the first surface S1 of the substrate 21 and has a slot N, and the opening of the slot N faces the transmission element 23, and the transmission element 23 is also arranged on the first surface of the substrate 21. On the surface S1 and electrically connected to the ground element 22, the feed element 24 and the transmission element 23 are located on the same surface (first surface S1) of the substrate 21 and electrically connected to each other, and the feed element 24 extends into the slot N in. The feed-in element 24 includes an extension transmission line 241 and a feed-in portion 243, the extension transmission line 241 connects the transmission element 23 and the feed-in portion 243, and the extension transmission line 241 generally extends into the slot N along the X axis (first axis), and The feed-in 243 is located completely in the slot N. The cable 26 is electrically connected to the feed-in portion 243 through the first surface S1 of the substrate 21 for transmitting wireless signals.

In this embodiment, the profile of the groove N is roughly T-shaped, and the profile of the slot N roughly corresponds to the profile of the feeding element 24, and the profile of the slot N is roughly symmetrical to the X axis (first At the same time, the edge of the slot N is separated from the edge of the feeding element 24 by at least a predetermined distance, for example, the distance between the feeding element 24 and the slot N is at least 0.5 times the line width of the extended transmission line 241.

Please refer to FIGS. 3 and 4 again. When the antenna 2 of the present invention is installed in an electronic device 5 (such as a notebook computer), it can be folded into a three-dimensional shape. As shown in the figure, the cable 26 is along the ground. The element 22 is connected to the feeding part 243, so that the cable 26 does not interfere with other structures, and the cable 26 itself does not need to be bent to match the configuration of the antenna.

Compared with the conventional antenna, the antenna 2 of the present invention moves the connection position of the cable 26 and the feed-in portion 243 down to the slot N of the ground element 22 along the X-axis (the first axis), so that not only the feed-in portion 243 There is a physical isolation between the transmission element 23 and the wiring and arrangement of the cables 26 are easier.

Please refer to FIG. 5 , which shows a variation example of the antenna 2 of the present invention, and the same parts as above will not be repeated. The feeding element 24 of the antenna 2 of the present invention is connected to the transmission element 23 by the side W of the transmission element 23. There is an included angle θ between the feeding element 24 and the side W, and the included angle θ is about 90 degrees. to 180 degrees.

Please refer to FIGS. 6 and 7 to illustrate the second embodiment of the antenna of the present invention. The antenna 3 of the present invention includes a substrate 31 , a ground element 32 , a transmission element 33 , a feed element 34 and a cable 36 . The substrate 31 has a first surface S1 and a second surface S2. The ground element 32 is arranged on the first surface S1 of the substrate 31 and has a slot N. The opening of the slot N faces the transmission element 33, and the transmission element 33 is also arranged on The first surface S1 of the substrate 31 is electrically connected to the ground element 32, and the feed-in element 34 is arranged on the second surface S2 of the substrate 31 (as shown in FIG. 7 ). The hole H is electrically connected to the transmission element 33 , and the projection of the feed-in element 34 on the first surface S1 partially overlaps with the slot N. The feed-in element 34 includes an extended transmission line 341 and a feed-in portion 343. The extended transmission line 341 extends substantially along the first axis (X-axis) and connects the transmission element 33 and the feed-in portion 343, and the feed-in portion 343 is on the first surface S1. The projection system of is located in slot N. The cable 36 is electrically connected to the feed-in portion 343 through the second surface S2 of the substrate 31 for transmitting wireless signals.

In addition, the antenna 3 further includes a ground portion G located on the second surface S2 of the substrate 31. There are a plurality of conductive vias (via/conductive holes) V between the ground portion G and the ground element 32, and the ground portion G passes through the conductive hole. The through hole V is electrically connected to the ground element 32 on the first surface S1 of the substrate 31 . In addition, the cable 36 is, for example, a coaxial cable with a coaxial braid shield, and the outer braid shield of the cable 36 is connected to the ground element 325 through the ground portion G and the conductive via V.

In this embodiment, the profile of the groove N is approximately circular, and the profile of the slot N approximately corresponds to the profile of the feeding element 34, and the profile of the slot N is approximately symmetrical to the X axis (the first axis) , at the same time, the edge of the slot N is separated from the edge of the projection of the feeding element 34 on the first surface S1 by at least a predetermined distance, for example, the projection of the feeding element 34 on the first surface is separated from the edge of the slot N A distance of at least 0.5 times the line width of the extended transmission line 341 .

Compared with the conventional antenna, the antenna 3 of the present invention moves the connection position of the cable 36 and the feeding part 343 down to the slot N of the ground element 32 along the X axis (first axis), and makes the transmission element 33 and the feed-in portion 343 are separately arranged on the first surface S1 and the second surface S2 of the substrate 31, which not only makes the feed-in portion 343 physically isolated from the transmission element 33, but also makes the routing and arrangement of the cables 36 easier. easy.

Although the present invention has been disclosed above with specific preferred embodiments, it is not intended to limit the present invention. Anyone skilled in this art can still make some modifications and changes without departing from the spirit and scope of the present invention. Modification, so the scope of protection of the present invention should be defined by the scope of the appended patent application.

Claims (27)

1. An antenna, comprising: a substrate; A ground element is arranged on the substrate and has a slot; a transmission element disposed on the substrate and electrically connected to the ground element; and A feed-in element is arranged on the substrate and electrically connected with the transmission element, wherein the feed-in element and the transmission element are located on the same surface of the substrate, and the feed-in element extends into the slot. 2. The antenna according to claim 1, wherein the feed-in element is electrically connected to the transmission element by a side of the transmission element, and there is an included angle between the feed-in element and the side, The included angle is approximately between 90 degrees and 180 degrees. 3. The antenna according to claim 1, wherein the opening of the slot faces the transmission element. 4. The antenna according to claim 1, wherein the groove is roughly T-shaped in outline. 5. The antenna according to claim 1, wherein the groove has a substantially circular profile. 6. The antenna according to claim 1, wherein the profile of the slot substantially corresponds to the profile of the feeding element. 7 . The antenna according to claim 1 , wherein the feeding element extends into the slot along a first axis, and a profile of the slot is substantially symmetrical to the first axis. 8. The antenna according to claim 1, wherein the feed-in element comprises an extension transmission line and a feed-in portion, the extension transmission line is electrically connected to the transmission element and the feed-in portion, and the feed-in portion is disposed on the opening in the slot. 9 . The antenna according to claim 8 , further comprising a cable electrically connected to the feeding part for transmitting a wireless signal. 10 . The antenna according to claim 8 , wherein the distance between the edge of the slot and the edge of the feeding element is at least 0.5 times the line width of the extended transmission line. 11 . 11. An antenna comprising: A substrate having a first surface and a second surface; A ground element is arranged on the first surface and has a slot; a transmission element disposed on the first surface and electrically connected to the ground element; and A feed-in element is arranged on the second surface and is electrically connected with the transmission element, wherein the projection of the feed-in element on the first surface overlaps with the slot. 12. The antenna according to claim 11, wherein the feed-in element is electrically connected to the transmission element by a side of the transmission element, and there is an angle between the feed-in element and the side, The included angle is approximately between 90 degrees and 180 degrees. 13. The antenna according to claim 11, wherein the opening of the slot faces the transmission element. 14. The antenna according to claim 11, characterized in that, the profile of the groove is substantially T-shaped. 15. The antenna according to claim 11, wherein the profile of the groove is substantially circular. 16. The antenna according to claim 11, wherein the profile of the slot substantially corresponds to the profile of the feeding element. 17. The antenna according to claim 11, wherein the projection of the feeding element on the first surface extends into the slot along a first axis, and the profile of the slot is substantially symmetrical to the first surface. one axis. 18. The antenna according to claim 11, wherein the substrate has a through hole through which the feeding element is connected to the transmitting element. 19. The antenna according to claim 11, wherein the feed-in element comprises an extended transmission line and a feed-in portion, the extended transmission line is electrically connected to the transmission element and the feed-in portion, and the feed-in portion is connected to the first The projection on the surface is located in this slot. 20. The antenna according to claim 19, further comprising a cable electrically connected to the feeding part for transmitting a wireless signal. 21. The antenna according to claim 20, characterized in that the antenna further comprises a ground portion located on the second surface of the substrate, and there are a plurality of conductive vias between the ground portion and the ground element, The ground portion is connected to the ground element through the conductive via holes. 22. The antenna according to claim 21, wherein the cable is a coaxial coaxial cable having an outer braided mesh, and the outer braided mesh is electrically connected to the grounding portion. 23 . The antenna according to claim 19 , wherein the distance between the edge of the slot and the edge of the projection of the feeding element on the first surface is at least 0.5 times the line width of the extended transmission line. 24. An electronic device comprising: a shell; and An antenna is arranged in the casing, and the antenna includes: a substrate; A ground element is arranged on the substrate and has a slot; a transmission element disposed on the substrate and electrically connected to the ground element; and A feed-in element is arranged on the substrate and electrically connected with the transmission element, wherein the feed-in element and the transmission element are located on the same surface of the substrate, and the feed-in element extends into the slot. 25. The electronic device according to claim 24, wherein the electronic device is a notebook computer. 26. An electronic device comprising: a shell; and An antenna is arranged in the casing, and the antenna includes: A substrate having a first surface and a second surface; A ground element is arranged on the first surface and has a slot; a transmission element disposed on the first surface and electrically connected to the ground element; and A feed-in element is arranged on the second surface and is electrically connected with the transmission element, wherein the projection of the feed-in element on the first surface overlaps with the slot. 27. The electronic device according to claim 26, wherein the electronic device is a notebook computer.

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