EP2940788A1 - Communication device antenna - Google Patents

Communication device antenna Download PDF

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Publication number
EP2940788A1
EP2940788A1 EP14166268.4A EP14166268A EP2940788A1 EP 2940788 A1 EP2940788 A1 EP 2940788A1 EP 14166268 A EP14166268 A EP 14166268A EP 2940788 A1 EP2940788 A1 EP 2940788A1
Authority
EP
European Patent Office
Prior art keywords
metal part
antenna
metal
communication device
lateral side
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14166268.4A
Other languages
German (de)
French (fr)
Inventor
Hsin-Cheng Su
Chun-Ta Liu
Shu-Chen Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
King Slide Technology Co Ltd
Original Assignee
King Slide Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by King Slide Technology Co Ltd filed Critical King Slide Technology Co Ltd
Priority to EP14166268.4A priority Critical patent/EP2940788A1/en
Publication of EP2940788A1 publication Critical patent/EP2940788A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Definitions

  • the present invention is related to a communication device antenna utilizing a metal housing for emitting and receiving radio signals of a communication device according to the pre-characterizing clause of claim 1.
  • plastic housings are mainly used by manufacturers due to cost concerns, in order to maintain basic radiation characteristics of an antenna.
  • metal housing is currently brought by Apple iPhones and Macbooks. Since the metal housing has light weight, good heat dissipation, high strength, high impact resistance, good looking, anti-electromagnetic and recyclable characteristics, the metal housing is getting more and more popular. Therefore, the metal housings are mainly used in development of new generations of the mobile communication products.
  • US patent No. 8,054,231 B2 disclosed by Ahn et al. teaches a metal case having a slot, which can be used as a slot antenna of a mobile device.
  • the slot may obviously ruin appearance of the metal case, and the slot needs to be arranged at a position corresponding to a specific area of the metal case. Therefore, it is important to design a proper antenna to allow electromagnetic waves to penetrate the metal case for achieving communication purposes without obviously ruining the appearance of the metal case.
  • the present invention aims at providing a communication device antenna utilizing a metal housing for emitting and receiving radio signals of a communication device.
  • the claimed communication device antenna comprises a metal housing, a signal feed point, a ground point, an antenna and a conductor.
  • the metal housing has a first lateral side, a second lateral side corresponding to the first lateral side, and a connection side extended and connected between the first lateral side and the second lateral side.
  • the antenna comprises a first metal part, a second metal part, a third metal part and a fourth metal part. The first metal part, the second metal part, the third metal part and the fourth metal part together form a loop antenna trace.
  • the antenna is separated from the metal housing by an opening.
  • the third metal part is extended and connected between the first metal part and the second metal part, and the third metal part is located adjacent to the first lateral side of the metal housing.
  • the fourth metal part is connected to the ground point, the first metal part and the metal housing.
  • the conductor is located adjacent to the second metal part of the antenna.
  • a coupling gap is defined between the conductor and the second metal part.
  • the conductor is connected to the signal feed point.
  • Fig. 1 to FIG. 4 are diagrams showing a communication device 10 having a metal housing 12 according to an embodiment of the present invention.
  • the metal housing 12 has a first lateral side 14a, a second lateral side 14b located at a position corresponding to the first lateral side 14a, and a connection side 16 extended and connected between the first lateral side 14a and the second lateral side 14b.
  • Antenna arrangement of the communication device 10 comprises at least a printed circuit board 20, an antenna 22 and a conductor 24, wherein the printed circuit board 20 comprises a signal feed point 26 and a ground point 28.
  • the printed circuit board 20 can be arranged in other size relative to the communication device 10. In other words, the size of the printed circuit board 20 is not limited by the figures.
  • the antenna 22 comprises a first metal part 30, a second metal part 32, a third metal part 34 and a fourth metal part 36.
  • the first metal part 30 of the antenna 22 is a straight section, the second metal part 32 of the antenna 22 is also a straight section, and the first metal part 30 is longer than the second metal part 32.
  • the first metal part 30 of the antenna 22 is substantially arranged along the adjacent connection side 16 of the metal housing 12.
  • the third metal part 34 of the antenna 22 is extended and connected between the first metal part 30 and the second metal part 32, and the third metal part 34 is located adjacent to the first lateral side 14a of the metal housing 12.
  • the fourth metal part 36 of the antenna 22 is connected to the ground point 28 of the printed circuit board 20, and the fourth metal part 36 is connected to the first metal part 30 and the metal housing 12.
  • an opening 18 is formed and located between the metal housing 12 and the antenna 22, more particularly, the antenna 22 is separated from the metal housing 12 by the opening 18, such that the antenna 22 can operate in a certain mode.
  • the opening 18 further comprises a first slit 38 and a second slit 40 substantially perpendicular to the first slit 38, wherein the first slit 38 is formed straight along the adjacent connection side 16 of the metal housing 12, and the second slit 40 is located adjacent to the second lateral side 14b of the metal housing 12.
  • the first slit 38 and the second slit 40 together form an L-shaped opening.
  • the opening 18 is not limited by the shape and arrangement disclosed in the embodiment of the present invention.
  • a corresponding frequency of the antenna 22 can be adjusted by determining a total length of the opening 18, and this technique is well known in the prior art, thus no further explanation is provided.
  • the conductor 24 is located adjacent to the second metal part 32 of the antenna 22, and the conductor 24 is connected to the signal feed point 26 of the printed circuit board 20.
  • the conductor 24 has a first conductive wire section 42 and a second conductive wire section 44.
  • the second conductive wire section 44 is substantially connected to the first conductive wire section 42 perpendicularly. More particularly, a coupling gap, which is approximate to an L-shaped gap, is defined between the first conductive wire section 42 and the second conductive wire section 44 of the conductor 24 and the second metal part 32 of the antenna 22.
  • first conductive wire section 42 and the second conductive wire section 44 of the conductor 24 are not limited to be connected with each other perpendicularly, the first conductive wire section 42 and the second conductive wire section 44 of the conductor 24 can be connected with each other non-perpendicularly.
  • the metal housing 12 can work as a radiation unit, for transmitting and receiving radio signals of the communication device 10.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)

Abstract

The present invention relates to a communication device antenna, including a metal housing (12), an antenna (22) and a conductor (24). The metal housing (12) has a first lateral side (14a) and a second lateral side (14b). The antenna (22) includes a first metal part (30), a second metal part (32), a third metal part (34) and a fourth metal part (36). The third metal part (34) is extended and connected between the first metal part (30) and the second metal part (32), and the third metal part (34) is located adjacent to the first lateral side (14a) of the metal housing (12) . The fourth metal part (36) is connected to a ground point (28), and the fourth metal part (36) is connected to the first metal part (30) and the metal housing (12). The conductor (24) is located adjacent to the second metal part (32) of the antenna (22). A coupling gap (46) is defined between the conductor (24) and the second metal part (32). The conductor (24) is connected to a signal feed point (26).

Description

    Field of the Invention
  • The present invention is related to a communication device antenna utilizing a metal housing for emitting and receiving radio signals of a communication device according to the pre-characterizing clause of claim 1.
    • Background of the Invention
  • During product development processes of conventional communication devices, such as mobile communication products, plastic housings are mainly used by manufacturers due to cost concerns, in order to maintain basic radiation characteristics of an antenna. However, a trend of metal housing is currently brought by Apple iPhones and Macbooks. Since the metal housing has light weight, good heat dissipation, high strength, high impact resistance, good looking, anti-electromagnetic and recyclable characteristics, the metal housing is getting more and more popular. Therefore, the metal housings are mainly used in development of new generations of the mobile communication products. For example, US patent No. 8,054,231 B2 disclosed by Ahn et al. teaches a metal case having a slot, which can be used as a slot antenna of a mobile device. But the slot may obviously ruin appearance of the metal case, and the slot needs to be arranged at a position corresponding to a specific area of the metal case. Therefore, it is important to design a proper antenna to allow electromagnetic waves to penetrate the metal case for achieving communication purposes without obviously ruining the appearance of the metal case.
    • Summary of the Invention
  • This in mind, the present invention aims at providing a communication device antenna utilizing a metal housing for emitting and receiving radio signals of a communication device.
  • This is achieved by a communication device antenna according to claim 1. The dependent claims pertain to corresponding further developments and improvements.
  • As will be seen more clearly from the detailed description following below, the claimed communication device antenna comprises a metal housing, a signal feed point, a ground point, an antenna and a conductor. The metal housing has a first lateral side, a second lateral side corresponding to the first lateral side, and a connection side extended and connected between the first lateral side and the second lateral side. The antenna comprises a first metal part, a second metal part, a third metal part and a fourth metal part. The first metal part, the second metal part, the third metal part and the fourth metal part together form a loop antenna trace. The antenna is separated from the metal housing by an opening. The third metal part is extended and connected between the first metal part and the second metal part, and the third metal part is located adjacent to the first lateral side of the metal housing. The fourth metal part is connected to the ground point, the first metal part and the metal housing. The conductor is located adjacent to the second metal part of the antenna. A coupling gap is defined between the conductor and the second metal part. The conductor is connected to the signal feed point.
    • Brief Description of the Drawings
  • In the following, the invention is further illustrated by way of example, taking reference to the accompanying drawings thereof:
    • FIG. 1 is a diagram showing arrangement of a communication device according to an embodiment of the present invention,
    • FIG. 2 is a diagram showing antenna arrangement of the communication device according to the embodiment of the present invention,
    • FIG. 3 is an enlarged view of an area A in FIG. 2, and
    • FIG. 4 is an enlarged view of an area B in FIG. 2.
    Detailed Description
  • Fig. 1 to FIG. 4 are diagrams showing a communication device 10 having a metal housing 12 according to an embodiment of the present invention. The metal housing 12 has a first lateral side 14a, a second lateral side 14b located at a position corresponding to the first lateral side 14a, and a connection side 16 extended and connected between the first lateral side 14a and the second lateral side 14b.
  • Antenna arrangement of the communication device 10 comprises at least a printed circuit board 20, an antenna 22 and a conductor 24, wherein the printed circuit board 20 comprises a signal feed point 26 and a ground point 28. Please note that the printed circuit board 20 can be arranged in other size relative to the communication device 10. In other words, the size of the printed circuit board 20 is not limited by the figures.
  • The antenna 22 comprises a first metal part 30, a second metal part 32, a third metal part 34 and a fourth metal part 36.
  • The first metal part 30 of the antenna 22 is a straight section, the second metal part 32 of the antenna 22 is also a straight section, and the first metal part 30 is longer than the second metal part 32. In a preferred embodiment, the first metal part 30 of the antenna 22 is substantially arranged along the adjacent connection side 16 of the metal housing 12.
  • The third metal part 34 of the antenna 22 is extended and connected between the first metal part 30 and the second metal part 32, and the third metal part 34 is located adjacent to the first lateral side 14a of the metal housing 12.
  • The fourth metal part 36 of the antenna 22 is connected to the ground point 28 of the printed circuit board 20, and the fourth metal part 36 is connected to the first metal part 30 and the metal housing 12.
  • In a preferred embodiment, an opening 18 is formed and located between the metal housing 12 and the antenna 22, more particularly, the antenna 22 is separated from the metal housing 12 by the opening 18, such that the antenna 22 can operate in a certain mode. The opening 18 further comprises a first slit 38 and a second slit 40 substantially perpendicular to the first slit 38, wherein the first slit 38 is formed straight along the adjacent connection side 16 of the metal housing 12, and the second slit 40 is located adjacent to the second lateral side 14b of the metal housing 12. In a preferred embodiment, the first slit 38 and the second slit 40 together form an L-shaped opening. Please note that the opening 18 is not limited by the shape and arrangement disclosed in the embodiment of the present invention. In addition, a corresponding frequency of the antenna 22 can be adjusted by determining a total length of the opening 18, and this technique is well known in the prior art, thus no further explanation is provided.
  • The conductor 24 is located adjacent to the second metal part 32 of the antenna 22, and the conductor 24 is connected to the signal feed point 26 of the printed circuit board 20. In a preferred embodiment, the conductor 24 has a first conductive wire section 42 and a second conductive wire section 44. The second conductive wire section 44 is substantially connected to the first conductive wire section 42 perpendicularly. More particularly, a coupling gap, which is approximate to an L-shaped gap, is defined between the first conductive wire section 42 and the second conductive wire section 44 of the conductor 24 and the second metal part 32 of the antenna 22. Please note that the first conductive wire section 42 and the second conductive wire section 44 of the conductor 24 are not limited to be connected with each other perpendicularly, the first conductive wire section 42 and the second conductive wire section 44 of the conductor 24 can be connected with each other non-perpendicularly.
  • According to the above arrangement, when the communication device 10 is turned on, power at the signal feed point 26 of the printed circuit board 20 is fed into the conductor 24, and the power is further coupled to the second metal part 32 of the antenna 22 through the coupling gap 46, such that the first metal part 30, the second metal part 32, the third metal part 34 and the fourth metal part 36 of the antenna 22 together form an approximate circular path (a loop antenna trace). Since the fourth metal part 36 of the antenna 22 is connected to the metal housing 12, the metal housing 12 can work as a radiation unit, for transmitting and receiving radio signals of the communication device 10.
  • According to the above illustration, efficacies and advantages of the present invention are listed as follows:
    1. a. appearance of the metal housing is not obviously ruined, and in contrast to the prior art, the metal housing has better appearance; and
    2. b. the antenna is arranged at an edge of the metal housing, and in contrast to the prior art, the antenna occupies less space.

Claims (6)

  1. A communication device antenna, characterized by:
    a metal housing (12) having a first lateral side (14a), a second lateral side (14b) corresponding to the first lateral side (14a), and a connection side (16) extended and connected between the first lateral side (14a) and the second lateral side (14b);
    a signal feed point (26);
    a ground point (28);
    an antenna (22) comprising:
    a first metal part (30);
    a second metal part (32);
    a third metal part (34) extended and connected between the first metal part (32) and the second metal part (34), and located adjacent to the first lateral side (14a) of the metal housing (12); and
    a fourth metal part (36) connected to the ground point (28), the first metal part (30) and the metal housing (12), wherein the first metal part (30), the second metal part (32), the third metal part (34) and the fourth metal part (36) together form a loop antenna trace, and the antenna (22) is separated from the metal housing (12) by an opening (18); and
    a conductor (24) located adjacent to the second metal part (32) of the antenna (22) and connected to the signal feed point (26), wherein a coupling gap (46) is defined between the conductor (24) and the second metal part (32).
  2. The communication device antenna of claim 1, characterized in that the first metal part (30) of the antenna (22) is a straight section, the second metal part (32) of the antenna (22) is a straight section, and the first metal part (30) is longer than the second metal part (32).
  3. The communication device antenna of claim 1 or 2, characterized in that the first metal part (30) of the antenna (22) is substantially arranged along the adjacent connection side (16) of the metal housing (12).
  4. The communication device antenna of any of claims 1-3, characterized in that the third metal part (34) of the antenna (22) is substantially extended and connected between the first metal part (30) and the second metal part (32) perpendicularly.
  5. The communication device antenna of any of claims 1-4, characterized in that the opening (18) comprises a first slit (38) and a second slit (40), the second slit (40) is substantially perpendicular to the first slit (38), the first slit (38) is formed straight along the adjacent connection side (16) of the metal housing (12), and the second slit (40) is located adjacent to the second lateral side (14b) of the metal housing (12).
  6. The communication device antenna of any of claims 1-5, characterized in that the conductor (24) has a first conductive wire section (42) and a second conductive wire section (44), the second conductive wire section (44) is substantially connected to the first conductive wire section (42) perpendicularly.
EP14166268.4A 2014-04-28 2014-04-28 Communication device antenna Withdrawn EP2940788A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14166268.4A EP2940788A1 (en) 2014-04-28 2014-04-28 Communication device antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14166268.4A EP2940788A1 (en) 2014-04-28 2014-04-28 Communication device antenna

Publications (1)

Publication Number Publication Date
EP2940788A1 true EP2940788A1 (en) 2015-11-04

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ID=50588565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14166268.4A Withdrawn EP2940788A1 (en) 2014-04-28 2014-04-28 Communication device antenna

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EP (1) EP2940788A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040257283A1 (en) * 2003-06-19 2004-12-23 International Business Machines Corporation Antennas integrated with metallic display covers of computing devices
US20080106478A1 (en) * 2006-11-06 2008-05-08 Hill Robert J Broadband antenna with coupled feed for handheld electronic devices
US20100328182A1 (en) * 2009-06-29 2010-12-30 Kin-Lu Wong Multiband Antenna
US8054231B2 (en) 2008-05-06 2011-11-08 Samsung Electronics Co., Ltd. Mobile terminal having metal case and antenna structure
US20120154223A1 (en) * 2010-12-21 2012-06-21 Sung-Hoon Oh Signal generation through using a grounding arm and excitation structure
EP2621017A1 (en) * 2012-01-27 2013-07-31 Research In Motion Limited Mobile wireless communications device including electrically conductive portable housing sections defining an antenna

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040257283A1 (en) * 2003-06-19 2004-12-23 International Business Machines Corporation Antennas integrated with metallic display covers of computing devices
US20080106478A1 (en) * 2006-11-06 2008-05-08 Hill Robert J Broadband antenna with coupled feed for handheld electronic devices
US8054231B2 (en) 2008-05-06 2011-11-08 Samsung Electronics Co., Ltd. Mobile terminal having metal case and antenna structure
US20100328182A1 (en) * 2009-06-29 2010-12-30 Kin-Lu Wong Multiband Antenna
US20120154223A1 (en) * 2010-12-21 2012-06-21 Sung-Hoon Oh Signal generation through using a grounding arm and excitation structure
EP2621017A1 (en) * 2012-01-27 2013-07-31 Research In Motion Limited Mobile wireless communications device including electrically conductive portable housing sections defining an antenna

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