The present invention relates to antenna positioning in portable devices.
The increasing proliferation of portable devices in today's society is supported by the availability of various wireless networks and technologies that permit wireless communication to and from portable devices. On-board antennas are employed by portable devices to connect with the wireless networks and to connect directly with one another in the case of Bluetooth™ communication. Users of portable devices have come to rely upon the availability and the reliability of their wireless communication capabilities.
The design of the antennas, and their integration with portable devices, is becoming more complex. One driver of this design and integration complexity is the decreasing size of portable devices and associated decreasing physical size of the antennas. Space inside of the housing of portable devices is at a premium due to their ever increasing functionality and number of on-board components. Another driver for design and integration complexity is that modern portable devices typically employ two or more antennas, such that their placement in portable devices must account for proper operation of each antenna while minimizing electronic interference between the antennas and other nearby on-board electronic components. Further drivers of design and integration complexity is the ever increasing frequencies and bandwidths that the antennas must be compatible with. Accordingly, maximizing the signal strength and/or directionality of the radiation patterns of the antennas is important, as the quality of the signal strength and/or the directionality can affect the reliability of wireless communication.
It is an object of the present invention to provide an antenna configuration in a portable device to obviate or mitigate at lease one of the above presented disadvantages.
Modern portable devices typically employ two or more antennas, such that their placement in portable devices must account for proper operation of each antenna while minimizing electronic interference between the antennas and other nearby on-board electronic components. Further, the antennas must be compatible with ever increasing frequencies and bandwidths. Contrary to current antenna designs for portable devices is a portable device providing wireless communication capability with a network using at antenna subsystem. The portable device comprises a housing for supporting components of the portable device including the antenna subsystem, such that the housing includes a first housing corner having a first housing wall, a second lousing wall in an opposed spaced apart relationship with the first housing wall, a third housing wall connecting the first housing wall with the second housing wall and a fourth housing wall connecting the first, second and third housing walls to one another. The portable device also has a first antenna of the antenna subsystem having a first non-planar metal layer positioned adjacent to at least three of the first, second, third and fourth housing walls of the first housing corner, such that the first non-planar metal layer extends away from the first housing corner in at least one of a parallel or non-parallel relationship with each of said at least three of the first, second, third and fourth housing walls.
A first aspect provided is aportable device providing wireless communication capability with a network using an antenna subsystem, the portable device comprising: a housing for supporting components of the portable device including the antenna subsystem, the housing including a first housing corner having a first housing wall, a second housing wall in an opposed spaced apart relationship with the first housing wall, a third housing wall connecting the first housing wall with the second housing wall and a fourth housing wall connecting the first, second and third housing walls to one another and a first antenna of the antenna subsystem having a first non-planar metal layer positioned adjacent to at least three of the first, second, third and fourth housing walls of the first housing corner, the first non-planar metal layer extending away from the first housing corner in at least one of a parallel or non-parallel relationship with each of said at least three of the first, second, third, and fourth housing walls.
A second aspect provided is a substrate configured for mounting an antenna in a housing interior of a portable device, the antenna providing wireless communication capability with a network, the substrate comprising: a substrate corner having a first substrate wall, a second substrate wall in an opposed spaced apart relationship with the first substrate wall, a third substrate wall connecting the first substrate wall with the second substrate wall and a fourth substrate housing wall connecting the first, second and third substrate walls to one another and the antenna having a non-planar metal layer mounted on at least three of the first, second, third and fourth substrate walls of the substrate corner, the non-planar metal layer extending away from the substrate corner on each of said at least three of the first, second, third and fourth substrate walls.
Embodiments of the present invention will now be described by way of example only with reference to the following drawings in which:
It is noted that as used herein, the term “portable device” is intended to encompass a wide range of digital devices including, without limitation, devices which transmit and/or receive digital information, such as mobile computers, mobile phones, handheld computers, digital cameras, hand held scanners and other electronic devices configured to transmit receive, read, and process wireless signals via one or more antennas. It is further recognized that the portable device can be embodied in a number of form factors, including smart phones, handheld personal digital assistants (PDAs), Ultra-Mobile PCs, Tablet PCs, and laptops that include one or more antennas configured for communicating over wireless networks.
It is noted that as used herein, the term “antenna” is intended to encompass a wide range antenna applications including, without limitation, non-directional based antennas such as WAN, WIFI and/or Bluetooth communication technologies. One form of the antenna can be a printed antenna, such that a metal layer of the printed antenna is configured (e.g. tuned for specific frequencies by selecting surface area and shape of the metal layer) for receiving, transmitting, or transceiving electromagnetic signals.
Referring to
Positioning of the antenna(s) in or on the portable device 10 is defined with respect to one or more corners of the housing 16. The housing 16 includes a first housing corner 30 having a first housing wall 32, a second housing wall 34 in an opposed spaced apart relationship with the first housing wall 32, a third housing wall 36 connecting the first housing wall 32 with the second housing wall 34 and a fourth housing wall 38 connecting the first 32, second 34 and third 36 housing walls to one another. The housing 16 also has a number of second housing corners 40 that can share two or more of the first 32, second 34 third 36 and fourth 38 housing walls with the first housing corner 30, along with a fifth housing wall 42 that connects the first 32, second 34 and third 36 housing walls and/or a sixth housing wall 44 that connects the first 32, second 34 and fourth 38 (or fifth 42) housing walls to one another. As an example configuration of the housing 16 of the portable device 10, the first housing wall 32 can be a front face, the second housing wall 34 can be a back face, the third housing wall 36 can be a side wall and the sixth housing wall 44 can be the other side wall, the fourth housing wall 38 can be a distal end (e.g. furthest end from a user of the portable device 10) and the fifth housing wall 42 can be a proximal end (e.g. closest end to the user of the portable device 10).
It is recognized that a wall edge 46 of two adjacent, housing walls can define an interior angle formed by the two intersecting adjacent housing walls (e.g. first 32 and fourth as housing walls). Alternatively, it is recognized that the wall edge 46, as formed by at least two adjacent housing walls, can form an arcuate shape, (e.g. semi-spherical) such as shown by example with the first 32, second 32 and fifth 42 housing walls. It is also recognized that the shape of each of housing walls can be planar or non-planar, as desired, including where the housing wall can contains an additional corner edge 47 positioned between two of the adjacent housing walls (e.g. on the third housing wall 36). It is also recognised that adjacent ones of the housing walls can be orthogonal to one another, as desired. It is also recognised that adjacent ones of the housing walls can be non-orthogonal to one another, or at least have wall portions that are non-orthogonal to one another, as desired.
Referring to
In one embodiment, mounting of the first antenna 50 can be done directly on the housing 16 itself, using the housing 16 as a substrate for the first non-planar metal layer 52 and/or as a support for the substrate of the first non-planar metal layer 52. For example, the first antenna 50 can be mounted on an interior surface (i.e. internal to the housing 16) of the first housing corner 30 or on the exterior surface (i.e. external to the housing 16) of the first housing corner 30, as desired.
In an alternative embodiment shown in
It is recognized that two adjacent substrate walls can define an interior angle formed by the two intersecting adjacent substrate walls (e.g. first 62 and fourth 68 substrate walls). Althernatively, it is recognized that at least two adjacent substrate walls can form an arcuate shape (e.g. semi-spherical) such as shown by example with the first 62, second 64 and third 66 substrate walls. It is also recognized that the shape of each of substrate walls can be planar or non-planar, as desired, including where the substrate wall can contains an additional corner edge positioned between two of the adjacent substrate walls. It is recognised that adjacent ones of the substrate walls can be orthogonal to one another, as desired. It is also recognised that adjacent ones of the substrate walls can be non-orthogonal to one another, as desired.
Referring to
The first antenna 50 is positioned in the first corner 30 and the second antenna 70 is positioned in the selected second corner 40 (as defined by the first 32, second 34, fourth 38 and sixth 44 housing walls by example only), such that the second housing corner 40 of the housing 16 is in a spaced apart relationship opposite the first housing corner 30. The second antenna 70 of the antenna subsystem 14 has a second non-planar metal layer 72, positioned adjacent to at least three of the first 32, second 34, fourth 38 and sixth 44 housing walls of the second housing corner 40, such that the second non-planar metal layer 72 extends away from the second housing corner 40 in at least one of a parallel or non-parallel relationship with each of said at least three of the first 32, second 34, fourth 38 and sixth 44 housing walls. Also part of the antenna subsystem 14 is an electromagnetic interference (EMI) shield 74 positioned between the first, and second antennas for facilitating electromagnetic isolation between a first radiation pattern of the first antenna 50 and a second radiation pattern of the second antenna 70. The EMI shield 74 is preferably composed of an electromagnetic radiation attenuating material (e.g. ferrous metal) and can be connected to a ground 27 (see
In alternative (not shown), the second non-planar metal layer 72 can have four radiating surface 71 that can be positioned adjacent to the first 32, second 34, fourth 38 and sixth 44 housing walls of the second housing corner 40, such that the second non-planar metal layer 72 extends away from the second substrate corner 80 along each of the four housing walls.
Similar to that discussed above, in an embodiment, mounting of the second antenna 70 can be done directly on the housing 16 itself, using the housing 16 as a substrate for the second non-planar metal layer 72 and/or as a support for the substrate of the second non-planar metal layer 72. For example, the second antenna 70 can be mounted on the interior surface (i.e. internal to the housing 16) of the second housing corner 40 or on the exterior surface (i.e. external to the housing 16) of the second housing corner 40, as desired.
In an alternative embodiment of the multiple antenna configuration shown in
As shown in
Referring to
The antenna 100 has a first radiation portion 104 and can have one or more second radiation portions 105, 106, 107 extending from the first radiation portion 104. As an example; the first radiation portion 104 can be configured for resonating at multiple resonant frequencies, for example a first resonant frequency and a second resonant frequency, such that the second resonant frequency is higher that the first resonant frequency. Each of the second radiation portions 105, 106, 107 can be configured to resonate at the first resonant frequency, the second resonant frequency, or both the first and the second resonant frequencies in cooperation with the first radiation portion 104. As an example, the second radiation portion 105 is configured to resonate at the second resonant frequency only, the second radiation portion 106 is configured to resonate at the first resonant frequency only, and the second radiation portion 107 is configured to resonate at both the first resonant frequency and the second resonant frequency. In this manner, it is recognised that at least two of the second radiation portions 105, 106, 107 can be configured to resonate at different resonant frequencies.
The second radiation portions 105, 106, 107 can also be referred, to as legs or extensions, as their shape has a length L greater than a width W. The second radiation portions 105, 106, 107 are electrically connected to the first radiation portion 104. The first radiation portion 104 and optionally one or more of the second radiation portions 105, 106, 107 are configured for receiving; transmitting, or transceiving electromagnetic signals with respect to the antenna 100. One of the second radiation portions 106 has a first extension 106a (e.g. L shaped) electrically connected to the first radiation portion 104 and a second extension 106b (e.g. arcuate shaped) electrically connected to the first extension 106a.
The non-planar metal layer 102 has feed point 108 for coupling to a feed line 110 (for connecting to the radio module(s) 18) and a ground point for connecting (not shown) to the ground 27 of the portable device 10 (see
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In terms of
Number | Name | Date | Kind |
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20040004789 | Watanabe et al. | Jan 2004 | A1 |
20060279468 | Yoneya et al. | Dec 2006 | A1 |
Number | Date | Country | |
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20120293375 A1 | Nov 2012 | US |