Electronic device with loudspeaker and antenna insulation

Abstract

Electronic device (10), comprising: a case (12); first and second antennas (40A, 40B) inside the housing (12); a loudspeaker (76) in the housing (12) which has a movable element (74); and an antenna isolation element (108) on the movable element (74) which is configured to improve high-frequency isolation between the first and second antennas (40A, 40B), and wherein the antenna insulation element (108) forms a parasitic antenna resonance element.

Description

[0001] This application concerns electronic devices, and more specifically, electronic devices with switching logic for wireless communication. BACKGROUND

[0002] Electronic devices are often equipped with wireless communication capabilities. To meet consumer demand for small form factor wireless devices, it may be desirable to integrate antennas into the compact enclosures of electronic devices. This can make it difficult to achieve desired antenna performance targets. For example, achieving satisfactory isolation between antennas can be challenging when antennas are mounted in close proximity to each other.

[0003] The prior art document US 2013 / 0076579A1 discloses an antenna system with a backplate having an end section. The antenna system further comprises first and second antennas spaced apart from each other along the end section of the backplate. The antenna system additionally includes a parasitic element between the first and second antennas along the end section of the backplate.

[0004] Prior art document US 2010 / 0238072A1 discloses a multi-input, multi-output antenna array with high isolation between the antennas. The antenna array comprises a substrate with a grounding layer on its surface. Two antennas are arranged opposite each other on the substrate. An isolation element in the form of a patterned slot is located between the first and second antennas on the substrate. A first signal terminal is provided for applying a first signal to address the first antenna, and a second signal terminal is provided for applying a second signal to address the second antenna. The isolation element provides isolation that prevents electromagnetic propagation between the two antennas.

[0005] The prior art document US 2006 / 0 152 417 A1 discloses communication devices with a combined antenna and loudspeaker for a radio receiver. The combined antenna and loudspeaker comprise a loudspeaker and a built-in, low-profile radio antenna element. The antenna element comprises a flat plate carrying a conductive antenna track. An exciter is connected to the plate and designed to induce vibrations in it to generate sound. SUMMARY

[0006] The present invention is described in independent claim 1. Advantageous embodiments are specified in dependent claims 2 to 8.

[0007] An electronic device may include a loudspeaker mounted in a housing. The housing may be cylindrical or have any other shape characterized by a longitudinal axis and a top surface through which the longitudinal axis passes. A printed circuit board (PCB) may be positioned parallel to the top surface. Input / output switching logic, such as a touch sensor, and other components may be mounted on the top surface and overlap with the PCB.

[0008] A first and a second antenna can be implemented on the circuit board on opposite sides of the device. Shielding structures, such as metal shielding sleeves, can be mounted on the circuit board and may overlap with the first and second antennas. The shielding structures can form antenna cavities for the first and second antennas and can help to isolate them from the input / output switching logic.

[0009] A loudspeaker with a circular outline can be mounted in the enclosure and oriented along its longitudinal axis. A metal layer on a moving element within the loudspeaker can be structured to form a slotted antenna isolation element or other antenna isolation element. The antenna isolation element can be configured to exhibit resonance at an operating frequency associated with the first and second antennas, thus improving isolation between them.

[0010] A high-frequency transceiver switching logic can be coupled with the antennas and used to wirelessly receive streaming media and other information. A control switching logic within the housing can be used to control the operation of the device. During operation, the control switching logic can receive media through the high-frequency transceiver switching logic and the antennas and can use the speaker to play the media back. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a schematic diagram of an illustrative electronic device according to one embodiment. Fig. Figure 2 is a perspective view of an illustrative electronic device according to one embodiment. Fig. Figure 3 is a cross-sectional side view of an illustrative electronic device according to one embodiment. Fig. Figure 4 is a top view of an illustrative circular printed circuit board with metal traces configured to form a pair of dual-band antennas for a wireless local area network according to one embodiment. Fig. Figure 5 is a top view of an illustrative metal layer on a movable loudspeaker structure having an opening configured to form a slotted antenna insulation element according to one embodiment. DETAILED DESCRIPTION

[0011] An electronic device, such as an electronic device 10 of Fig. 1, can be provided with wireless switching logic. The wireless switching logic can include antennas, such as antennas for a wireless local area network or other antennas. The electronic device 10 can be a computing device, such as a laptop computer, a computer monitor containing an embedded computer, a tablet computer, a mobile phone, a media playback device or other handheld or portable electronic device, a smaller device such as a wristwatch device, a pendant device, a headphone or earphone device, a device embedded in eyeglasses or other equipment worn on a user's head, or other body-worn or miniature device, a television, a computer display not containing an embedded computer, a gaming device, a navigation device,an embedded system such as a system in which electronic equipment is mounted with a display in a kiosk system or automobile, a wireless internet-connected voice-controlled speaker, equipment implementing the functionality of two or more of these devices, or other electronic equipment.

[0012] As in Fig. As shown in Figure 1, the device 10 can include data storage and processing switching logic, such as control switching logic 28. The switching logic 28 can include data storage, e.g., a hard disk drive data storage, non-volatile memory (e.g., flash memory or other electrically programmable read-only memory configured to form a solid-state drive), volatile memory (e.g., static or dynamic random-access memory), etc. The processing switching logic in the switching logic 28 can be used to control the operation of the device 10. This processing circuitry can be based on one or more microprocessors, microcontrollers, digital signal processors, application-specific integrated circuits, etc.

[0013] The switching logic 28 can be used to run software on the device 10, such as internet browsing applications, VoIP (Voice over Internet Protocol) telephone calling applications, email applications, media playback applications, reminder list applications, calendar applications, shopping applications, home automation applications, alarm and timer setting applications, operating system functions, etc. To support interactions with external equipment, the switching logic 28 can be used to implement communication protocols. Communication protocols that can be implemented using the switching logic 28 include internet protocols and wireless local area network protocols (e.g., IEEE 802.0).11 protocols -- sometimes referred to as WiFi® -- and protocols for other short-range wireless communication links, such as the Bluetooth® protocol), mobile phone protocols, antenna diversity protocols, etc.

[0014] An input-output switching logic 44 can include input-output devices 32. The input-output devices 32 can be used to allow data to be supplied to the device 10 and to allow data from the device 10 to be made available to external devices. The input-output devices 32 can include user interface devices, data port devices, and other input-output components. For example, the input-output devices 32 can include touch sensors. The touch sensors can be optical touch sensors, capacitive touch sensors, and / or other touch sensors. As an example, the input-output devices 32 can include two-dimensional capacitive touch sensors.The two-dimensional touch sensors can overlap with light-emitting components, such as light-emitting diodes forming status indicator lights, displays with arrays of pixels (e.g., liquid crystal display pixels, organic light-emitting diode pixels, crystalline semiconductor devices forming light-emitting diode pixels, and / or other pixels), backlit structured openings in opaque layers (e.g., to form a logo, text, graphic, etc.), and / or other light-emitting components. The input / output devices 32 can also include light-emitting components, such as displays without touch-sensing capabilities, buttons, or keys (mechanical, capacitive, optical, etc.).), scroll wheels, touchpads, keypads, keyboards, microphones, cameras, buttons or keys, speakers, status indicators, light sources such as light-emitting diodes for illuminating edge features (which may, but do not have to, serve as components to provide dynamically customizable output to a user), audio jacks and other audio connection components, digital data connection devices, motion sensors (accelerometers), capacitance sensors, proximity sensors, magnetic sensors, force sensors (e.g. force sensors coupled with a display to detect pressure applied to the display), etc.

[0015] The input-output switching logic 44 can include a wireless switching logic 34 to support wireless communication. The wireless switching logic 34 can include a radio frequency (RF) transceiver switching logic 90, which is formed from one or more integrated circuits, a power amplifier circuit, low-noise input amplifiers, passive RF components, one or more antennas, such as an antenna 40, transmission lines, such as a transmission line 92, and other switching logic for handling wireless RF signals. Wireless signals can also be transmitted using light (e.g., using infrared communication).

[0016] The RF Transceiver Switching Logic 90 can include wireless local area network (WLAN) switching logic to handle the 2.4 GHz and 5 GHz bands for WiFi® (IEEE 802.11) communication, and can include Bluetooth® switching logic to handle the 2.4 GHz Bluetooth® communication band. If desired, the Switching Logic 90 can handle other bands, such as cellular bands, near-field communication (NFC) bands (e.g., 13.56 MHz), millimeter wave bands (e.g., 60 GHz communication), and / or other communication bands. Configurations in which the RF Transceiver Switching Logic 90 handles wireless local area network bands (e.g., 2.4 GHz and 5 GHz) may sometimes be described herein as an example. However, in general, the Switching Logic 90 can be configured to handle all suitable communication bands of interest.

[0017] The wireless switching logic 34 can include one or more antennas, such as the antenna 40. Antennas, such as the antenna 40, can be configured using any suitable antenna type. For example, the antennas in the device 10 can include antennas with resonant elements formed from loop antenna structures, patch antenna structures, inverted F antenna structures, slot antenna structures, inverted F planar antenna structures, helical antenna structures, monopole antennas, dipoles, combinations of these configurations, etc. Parasitic elements can be included in the antennas 40 to match the antenna power. In some configurations, the device 10 can include insulating elements between the respective antennas 40 to help prevent antenna-to-antenna crosstalk.Different antenna types can be used for different bands and combinations of bands. For example, one antenna type can be used when training an antenna for a local wireless connection, and another antenna type can be used when training an antenna for a long-distance wireless connection. In some configurations, different antennas can be used when handling different bands for the transceiver switching logic. Each antenna can cover one or more bands. For example, the antennas can be dual-band antennas for a wireless local area network.

[0018] As in Fig. As shown in Figure 1, the high-frequency transceiver switching logic 90 can be coupled to an antenna feed line 102 of the antenna 40 using the transmission line 92. The antenna feed line 102 can include a positive antenna feed line terminal, such as a positive antenna feed line terminal 98, and can include a ground antenna feed line terminal, such as a ground antenna feed line terminal 100. The transmission line 92 can be formed from metal traces on a printed circuit board or other conductive structures and can include a positive transmission line signal path, such as a path 94 coupled to terminal 98, and a ground transmission line signal path, such as a path 96 coupled to terminal 100. Transmission line paths, such as path 92, can be used to guide antenna signals within the device 10.The transmission lines in the device 10 can include coaxial cable paths, microstrip transmission lines, stripline transmission lines, edge-coupled microstrip transmission lines, edge-coupled stripline transmission lines, transmission lines formed from combinations of these types of transmission lines, etc. Filter switching logic, switching logic, impedance matching logic, and other switching logic can be interposed within the transmission lines, such as the transmission line 92, and / or circuits such as these can be incorporated into the antenna 40 (e.g., to support antenna tuning, to support operation in desired frequency bands, etc.). During operation, the control switching logic 28 can use the transceiver switching logic 90 and the one or more antennas 40 to wirelessly transmit and receive data.The control switching logic 28 can, for example, receive streaming media wirelessly using the transceiver switching logic 90 and one or more antennas 40 and can play the media back through a loudspeaker in the device 10.

[0019] A perspective view of an illustrated electronic device, such as device 10 of Fig. 1, is in Fig. 2 shown. As in Fig. As shown in Figure 2, the device 10 can have a housing, such as a housing 12. The housing 12, which may sometimes be referred to as a "casing" or "encapsulation," can be made of plastic, glass, ceramic, fiber composites, metal (e.g., stainless steel, aluminum, etc.), fabric, other suitable materials, or a combination of two or more of these materials. The housing 12 can be configured using a one-piece design, in which the housing 12 is wholly or partially machined or formed as a single structure, or it can be formed using multiple structures (e.g., an internal frame structure that is covered with fabric in some sections and in other sections with other housing structures and / or input / output components).

[0020] As in the example of Fig. As shown in Figure 2, the device 10 can have a housing with a cylindrical shape and can have an upper circular surface 14. The cylindrical housing can have a longitudinal axis (Z-axis) that runs vertically through the upper circular surface 14. A loudspeaker and / or other components can be mounted inside the device 10 (e.g., such that the loudspeaker points upward into the interior of the housing 12, or is otherwise oriented so that the loudspeaker points along the longitudinal axis of the cylindrical housing). Sound can pass through openings in the housing 12, through fabric covering some or all of the side walls of the housing 12, and / or through other suitable sound outlets. A two-dimensional touch sensor and / or other input switching logic can be mounted on the surface 14, and one or more light-based output components can be overlapped by the two-dimensional touch sensor (e.g.,a display with a pixel array, light-emitting diodes, and / or other light-based output components). A microphone on surface 14 and / or elsewhere in the device 10 can be used to obtain voice input (e.g., user voice commands to control the device 10, speech for a voice call, etc.). If desired, the device 10 and the housing 12 can have other suitable shapes (e.g., rectangular box shapes, dome shapes, pyramid shapes, spherical shapes, other shapes, and / or combinations of these shapes). The configuration of . Fig. Number 2 is for illustrative purposes.

[0021] Fig. Figure 3 is a cross-sectional side view of device 10. Fig. 2 along a line 50 and seen in the direction of 52. As in Fig. As shown in Figure 3, the device 10 can have one or more input / output devices on the surface 14 of the device 10, such as an input / output switching logic 54. The input / output switching logic 54 can include components 56 on one or more substrates, such as a substrate 60. The substrate 60 can be, for example, a rigid or flexible printed circuit board. The components 56 can be used to detect touch input and / or other input from a user (e.g., a user's finger touches the upper surface of the device 10 on the surface 14) and / or can be used to provide output to a user (e.g., light-based output).For example, the components 56 may include one or more light-emitting diodes, illuminated button or key markings, pixel fields forming displays, illuminated border structures, and / or other light-emitting output devices for providing visual output to a user (status indicator lights, flashing lights, images including content such as text, graphics, video) and / or other visual outputs. The device 10 may also include sensors, buttons or keys, microphones, and other components (see, for example, the input-output devices 32) for detecting user input and may include haptic devices, audio components, and other devices for providing output to a user.

[0022] As in Fig. As shown in Figure 3, the device 10 can have one or more audio loudspeakers, such as a loudspeaker 76. There can be any suitable number of loudspeakers, such as the loudspeaker 76 in the device 10 (e.g., at least one, at least two, at least three, at least four, at least ten, less than 50, less than 20, etc.). Loudspeakers in the device 10 can include tweeters, midrange drivers, woofers, full-range drivers, etc.

[0023] The loudspeaker 76 can include a movable loudspeaker structure, such as a diaphragm 74 (e.g., a movable loudspeaker element, such as a cone, a dust cover, and / or another movable loudspeaker structure that moves air when driven, thereby producing sound). The diaphragm 74 can be coupled to a loudspeaker support structure 82 by a flexible element, such as a surround 84, so that the diaphragm 74 can move freely during operation. A magnet, such as a magnet 80, and an electromagnet, such as an electromagnet 78, can work together to move the diaphragm 74.For example, the electromagnet 78 can be driven by an audio signal during the use of the loudspeaker 76 to cause the electromagnet 78 to move in directions 86 with respect to the magnet 80, thereby moving the diaphragm 74 so that the loudspeaker 76 produces audio output.

[0024] Power supply components and / or other components 84 can surround the magnet 80 and / or can be mounted elsewhere inside the housing 12. If desired, loudspeakers, such as the loudspeaker 76 from Fig. 3. Other configurations (e.g., cones with different shapes, different drive arrangements, magnets of a different shape, etc.). The configuration from Fig. 3 is for illustrative purposes only.

[0025] The device 10 can include one or more antennas (see, for example, the antenna 40 of Fig. 1), such as a pair of dual-band antennas to support communication via a wireless local area network (WiFi®) and / or other wireless communication. For example, the device 10 may include a first antenna, such as an antenna 40A, and a second antenna, such as an antenna 40B.

[0026] Antennas 40A and 40B can be dual-band antennas capable of transmitting and receiving signals at 2.4 GHz and 5 GHz, or they can be configured to operate at other frequencies. Antennas 40A and 40B can be formed from metal traces 72 on a substrate, such as a printed circuit board 70. The traces 72 can be formed on the top and / or bottom surface of the printed circuit board 70 and / or can be embedded within the printed circuit board 70. Electrical components 68 (e.g., integrated circuits, etc.) can be mounted on the top and / or bottom surface of the printed circuit board 70 (e.g., using solder).

[0027] Shielding structures can be used to prevent interference between antennas 40A and 40B and the switching logic of the device 54. For example, metal shielding sleeves 66 can be soldered to ground traces in the circuit board 70 and can overlap with antennas 40A and 40B. As shown in Fig. As shown in Figure 3, one of the sleeves 66 can overlap with antenna 40A and create an antenna cavity for antenna 40A, and the other sleeve 66 can overlap with antenna 40B and create an antenna cavity for antenna 40B. Ground connection structures, such as conductive seals 62 (e.g., a conductive foam covered with conductive material), can be used to connect the shielding sleeves 66 to ground via metal traces in the circuit board 60, thereby blocking interference between antennas 40A and 40B and the switching logic on the circuit board 60.

[0028] The presence of the ground connection structures 62 can also create vertical shielding walls that prevent lateral propagation of antenna signals (signal propagation in the XY plane). Fig. 3) prevent in a region 88 between circuit board 60 and circuit board 70.

[0029] An air gap 89 exists between the circuit board 70 and the membrane 74. This creates a potential interference path for antenna signals. In particular, it is possible that antenna signals transmitted from antenna 40A pass through the gap 89 and are received by antenna 40B, and vice versa. Such interference will reduce wireless performance.

[0030] The air gap 89 is present to form a sound passage and allow the diaphragm 74 to move in directions 86 and produce sound that can exit the housing 12 (e.g., through openings and / or a fabric covering the side walls of the housing 12 and / or other sound passages). The inclusion of gaskets, such as the gaskets 62 on the lower surface of the circuit board 70, would tend to block sound from the diaphragm; therefore, this type of gasket arrangement must not be used to improve antenna isolation.

[0031] To satisfactorily isolate antennas 40A and 40B from each other, an antenna isolation element can be incorporated into the device 10 in the vicinity of the air gap 89. In particular, a parasitic antenna resonant element can be placed in the air gap 89 between antennas 40A and 40B (e.g., in a position inserted laterally between antenna 40A on the left side of the housing 12 and antenna 40B on the opposite right side of the housing 12).

[0032] The parasitic element can exhibit resonance at an antenna frequency associated with antennas 40A and 40B. For example, the parasitic element can be tuned to exhibit resonance at 2.4 GHz in configurations where coupling problems between 2.4 GHz antennas are more significant than coupling problems between 5 GHz antennas. The parasitic element acts as an antenna isolation element, disrupting electrical fields in gap 89 and helping to block signals passing through gap 89 between antennas 40A and 40B. In particular, the parasitic element contributes to blocking signals from antenna 40A in gap 89, thereby preventing these signals from reaching antenna 40B, and contributes to blocking signals from antenna 40B in gap 89, thereby preventing these signals from reaching antenna 40A.

[0033] Fig. Figure 4 is a view along the Z-direction of the circuit board 70, showing how the antenna 40A can have an antenna resonant element, such as an antenna resonant element 40AE, and shows how the antenna 40B can have an antenna resonant element, such as an antenna resonant element 40BE. An antenna feed line 102A of the antenna 40A can include a positive antenna feed line terminal 98A coupled to a feed line branch of the element 40AE, and can include a ground antenna feed line terminal 100A coupled to an antenna ground 104. Antenna 40A can be an inverted F dual-band antenna with a shorter arm to improve resonance at 5 GHz and a longer arm to improve resonance at 2.4 GHz. A return path 40ASC can be coupled between the resonant element 40AE and the ground 104.The antenna feed line 102B of antenna 40B can include a positive antenna feed line terminal 98B, which is coupled to a feed line branch of element 40BE, and can include a ground antenna feed line terminal 100B, which is coupled to the antenna ground 104. Antenna 40B can be an inverted F dual-band antenna with a shorter arm to improve resonance at 5 GHz and a longer arm to improve resonance at 2.4 GHz. A return path 40BSC can be coupled between the resonant element 40BE and ground 104.

[0034] Antennas 40A and 40B point away from each other and outwards through the walls of the housing 12, thus improving isolation between these antennas, allowing them to be used in a multi-input, multi-output arrangement. Transmission lines can be coupled between the feed lines 102A and 102B and the high-frequency transceiver switching logic 90, as in conjunction with the transmission line 92 of Fig. 1 described. The metal traces forming the antennas 40A and 40B and the transmission lines can be formed on one or more surfaces of the printed circuit board 70 and / or can be embedded in the printed circuit board 70.

[0035] Fig. Figure 5 is a view along a Z-direction of the membrane 74, showing how an antenna isolation element 108 can be formed, if desired, from a parasitic slot resonant element (a slot antenna isolation element). As shown in Fig. As shown in Figure 5, a metal layer 106 (e.g., metal sheets formed from one or more layers of a polymer support, a stamped metal foil, etc.) can cover the membrane 74 (e.g., the metal layer 106 can overlap the membrane 74 by at least 50%, at least 80%, less than 99.99%, or any other suitable amount). The insulating element 108 can be formed from an opening in the layer 106.

[0036] The metal layer 106 can be formed by punching a metal foil with a desired pattern to create a slot-shaped opening for the element 108, and by laminating the structured foil onto a paper cone or other support structure associated with the membrane 74 (e.g., using an adhesive). Other manufacturing techniques can be used if desired. For example, the element 108 can be formed by structuring metal webs using selective printing of conductive webs (pad printing, inkjet printing, screen printing, etc.), by laser processing of a ceiling metal film, by photolithographic processing, etc.

[0037] Element 108 can be a slot with a length equal to half a wavelength at 2.4 GHz (or another frequency of interest), such that element 108 exhibits a resonance response at 2.4 GHz. This allows element 108 to disrupt electric fields in the gap 89 at 2.4 GHz, thereby contributing to the improvement of the RF isolation (RF antenna isolation) between antennas 40A and 40B, particularly at 2.4 GHz. In configurations where the diameter of diaphragm 74 is insufficient to form a closed, straight, half-wavelength slot, element 108 can be L-shaped or (as in Fig. (5 shown) have a C-shape. If desired, an antenna isolation element, such as element 108, can be formed from an L-shaped metal element, a straight strip of metal, or other suitable antenna resonant element shapes. The isolation element can be configured to exhibit resonance at any suitable frequency or frequency range (e.g., 2.4 GHz, 5 GHz, etc.). If desired, multiple slots or multiple isolation elements of other types can be formed on a movable loudspeaker structure in the loudspeaker 76. Configurations in which the one or more isolation elements are formed on non-moving loudspeaker structures or other support structures inside the housing 12 can also be used. The slot-supported antenna resonant element configuration of Fig. 5 is for illustrative purposes only.

[0038] According to one embodiment, an electronic device is provided which includes a housing, a first and a second antenna inside the housing, a loudspeaker inside the housing which has a movable element, and an antenna isolation element on the movable element which is configured to improve high-frequency isolation between the first and the second antenna.

[0039] According to another embodiment, the antenna insulation element is formed from a parasitic antenna resonance element.

[0040] According to another embodiment, the parasitic antenna resonant element includes a slot in a metal layer.

[0041] According to another embodiment, the metal layer is formed on the moving element.

[0042] According to another embodiment, the metal layer encloses a metal foil laminated onto the moving element.

[0043] According to another embodiment, the first and second antennas each include a first and a second dual-band antenna for a wireless local area network.

[0044] According to another embodiment, the first and second antennas include dual-band antennas operating at 2.4 GHz and 5 GHz.

[0045] According to another embodiment, the first and second antennas are formed from metal traces on a circuit board, and the circuit board is separated from the moving element by an air gap.

[0046] According to another embodiment, the electronic device includes a first and a second shielding sleeve on the circuit board, each forming a first and a second antenna cavity for the first and second antennas.

[0047] According to another embodiment, the electronic device includes conductive seals on the first and second shielding sleeves.

[0048] According to another embodiment, the electronic device includes an input-output switching logic with a substrate; the seals extend between the first and second shielding sleeves and the substrate.

[0049] According to another embodiment, the electronic device includes a transceiver switching logic coupled to the first and second antennas, and a control switching logic configured to receive media with the transceiver switching logic and the first and second antennas, and configured to play the media back through the loudspeaker.

[0050] According to one embodiment, an electronic device is provided which includes a cylindrical housing with a top surface, a printed circuit board with which the top surface overlaps, a first and a second antenna on the printed circuit board, and a metal layer with an opening that forms a slotted antenna isolation element configured to provide high-frequency isolation between the first and the second antenna.

[0051] According to another embodiment, the electronic device includes a loudspeaker pointing along a longitudinal axis of the cylindrical housing.

[0052] According to another embodiment, the slotted antenna insulation element is supported by the loudspeaker.

[0053] According to another embodiment, the loudspeaker has a movable loudspeaker element that is coupled to the metal layer.

[0054] According to another embodiment, the first and second antennas include antennas for a wireless local area network.

[0055] According to one embodiment, an electronic device is provided which includes a loudspeaker with a movable loudspeaker structure, a metal layer on the movable loudspeaker structure and an antenna structure formed from the metal layer.

[0056] According to another embodiment, the electronic device includes a first and a second antenna for a wireless local area network, the antenna structure being an antenna isolation element that provides isolation between the first and second antennas for a wireless local area network.

[0057] According to another embodiment, the electronic device includes a printed circuit board on which the first and second wireless local area networks are formed, a housing with a surface parallel to the printed circuit board, and an input-output switching logic that includes at least one touch sensor on the surface of the housing.

[0058] The foregoing serves only for illustration, and various modifications can be made to the described embodiments. The foregoing embodiments can be implemented individually or in any combination.

Claims

[1] Electronic device (10) comprising: a case (12); first and second antennas (40A, 40B) inside the housing (12); a loudspeaker (76) in the housing (12) which has a movable element (74); and an antenna isolation element (108) on the movable element (74) which is configured to improve high-frequency isolation between the first and second antennas (40A, 40B), and wherein the antenna insulation element (108) forms a parasitic antenna resonance element. [2] Electronic device (10) according to claim 1, wherein the parasitic antenna resonance element comprises a slot in a metal layer (106). [3] Electronic device (10) according to claim 2, wherein the metal layer (106) is formed on the movable element (74), and wherein the metal layer (106) comprises a metal foil laminated onto the movable element (74). [4] Electronic device (10) according to claim 2, wherein the first and second antennas (40A, 40B) each comprise first and second dual-band antennas for a wireless local area network. [5] Electronic device (10) according to claim 1, wherein the first and second antennas (40A, 40B) comprise dual-band antennas operating at 2.4 GHz and 5 GHz. [6] Electronic device (10) according to claim 1, wherein the first and second antennas (40A, 40B) are formed from metal traces (72) on a printed circuit (70) and wherein the printed circuit (70) is separated from the movable element (74) by an air gap (89). [7] Electronic device (10) according to claim 6, further comprising: first and second shielding sleeves (66) on the printed circuit (70), each forming first and second antenna cavities for the first and second antennas (40A, 40B); conductive seals (62) on the first and second shielding sleeves (66); and an input-output switching logic (54) with a substrate (60), wherein the seals (62) extend between the first and second shielding sleeves (66) and the substrate (60). [8] Electronic device (10) according to claim 1, further comprising: a transceiver switching logic (90) coupled to the first and second antennas (40A, 40B); and a control switching logic (28) configured to receive media with the transceiver switching logic (90) and the first and second antennas (40A, 40B), and configured to play the media back through the loudspeaker (76).

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