WO2020167627A1 - Systèmes et dispositifs pour solutions à antennes multiples - Google Patents

Systèmes et dispositifs pour solutions à antennes multiples Download PDF

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Publication number
WO2020167627A1
WO2020167627A1 PCT/US2020/017429 US2020017429W WO2020167627A1 WO 2020167627 A1 WO2020167627 A1 WO 2020167627A1 US 2020017429 W US2020017429 W US 2020017429W WO 2020167627 A1 WO2020167627 A1 WO 2020167627A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
frequency band
turns
loop antenna
loop
Prior art date
Application number
PCT/US2020/017429
Other languages
English (en)
Inventor
Thomas Bolin
Zhinong Ying
Carl-Johan WEIDERSTRAND
Original Assignee
Sony Corporation
Sony Mobile Communications (Usa) Inc.
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 Sony Corporation, Sony Mobile Communications (Usa) Inc. filed Critical Sony Corporation
Publication of WO2020167627A1 publication Critical patent/WO2020167627A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • H01Q1/3241—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems particular used in keyless entry systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/35—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using two or more simultaneously fed points
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • 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

  • Devices with a small footprint may communicate with a vehicle and/or a wireless network.
  • Remote functions to control vehicles may include Internet of Things (IoT) technology, peer-to-peer communication, and/or other technologies.
  • Remote devices may need to be sturdy with an attractive outer appearance.
  • Conventional remote control designs may involve complex integration of several different antennas, which may use a large footprint with a short communication range.
  • Prior art ring antennas may operate by using an open point to produce a 1 ⁇ 4 wave IFA antenna or monopole, which usually are sensitive to human hand detuning.
  • Inventive concepts described herein provide an integrated multi-antenna solution that may provide a small footprint suitable for use in a key fob and low sensitivity to human hand detuning.
  • a design of conductors such as, for example, conductive rings or metal rings that may surround the key fob and that may provide a desirable appearance as well as mechanical strength is described.
  • These conductive rings may be part of one or more antennas for providing various communications and may have their respective antenna apertures or loop areas increased or maximized with respect to the available footprint and hence an improved communication range may be obtained as compared to individually designed antennas for an equally sized footprint.
  • Various embodiments of the present inventive concepts include an antenna system for a wireless electronic device.
  • the antenna system includes a ground plane, a closed loop antenna that includes two or more turns that are separated from the ground plane.
  • the loop antenna is configured to resonate in a first frequency band based on the two or more turns of the loop antenna.
  • the loop antenna is configured to resonate in a second frequency band based on a first portion of the two or more turns of the loop antenna.
  • the antenna system includes a notch antenna configured to resonate in a third frequency band and including a notch in the ground plane.
  • the two or more turns may be in respective planes that are parallel to the ground plane.
  • the ground plane may be spaced apart from the two or more turns.
  • the two or more turns may be arranged as a coil around the ground plane.
  • the loop antenna may be configured to resonate in a first frequency band based on each of the two or more turns of the loop antenna.
  • the loop antenna may further be configured to resonate in a first frequency band based on two or more complete turns of the loop antenna.
  • the loop antenna may be configured to resonate in the second frequency band based on a respective portion of two of the two or more turns of the loop antenna.
  • the antenna system may include a high pass filter between the respective portion of the two of the two or more turns.
  • the high pass filter is configured to isolate the first frequency band from the second frequency band.
  • the two or more turns may be in respective planes that are parallel to the ground plane. At least one turn of the two or more turns may extend around a perimeter of the ground plane.
  • the antenna system may include a slot antenna including the second portion of the loop antenna and a slot between a third portion of the loop antenna and the ground plane.
  • the slot antenna is configured to resonate in a fourth frequency band.
  • At least one of the two or more turns and a slot portion between the ground plane and the at least one of the two or more turns are configured to resonate in a fifth frequency band.
  • a combination of the notch and a second portion of the loop antenna is configured to resonate in a sixth frequency band.
  • the first frequency band includes Near Field Communication (NFC) frequencies
  • the second frequency band includes Very High
  • the Frequency (VHF) frequencies the third frequency band includes Ultra- Wide Band (UWB) frequencies
  • the fourth frequency band includes Global Navigation Satellite System (GNSS) frequencies.
  • the fifth frequency band includes Long-Term Evolution (LTE) frequencies.
  • the sixth frequency band may include Gigahertz (GHz) frequencies including one or more of Wifi and Bluetooth low energy (BLE) frequencies.
  • the two or more turns may be the first turn, a second turn, and a third turn.
  • the VHF frequencies may be generated based on the first turn and the third turn
  • the NFC frequencies may be generated based on the first turn, second turn, and the third turn.
  • the UWB frequencies may be generated based on the notch antenna.
  • the GNSS frequencies may be generated based on the slot antenna.
  • At least one of the two or more turns of the antenna system is on the housing of the wireless electronic device.
  • a length of the notch may be defined by a quarter wavelength of the UWB frequencies, and/or a length of the slot may be defined by a half wavelength of the GHz frequencies.
  • the fourth frequency band may be generated based on a third portion of the loop antenna and the second slot between the third portion of the loop antenna and the ground plane.
  • the second turn may be connected to a first band pass filter that filters the LTE frequencies, and the first turn may be connected to a second band pass filter that filters the NFC frequencies and the VHF frequencies.
  • a separate loop antenna may be formed by short-circuiting the first turn of the loop antenna with its bottom turn using a filter conductive at VHF frequencies, such as, for example, a capacitor at the corner location opposite to the corner of the feed ports of the loop antenna.
  • a filter conductive at VHF frequencies such as, for example, a capacitor at the corner location opposite to the corner of the feed ports of the loop antenna.
  • the first slot antenna formed between the third or bottom turn of the loop antenna to the ground-plane may need to be configured for maximum available slot-length around the periphery of the device, if the size is restricted with respect to operating signal wavelengths.
  • the filters conductive for LTE-bands are near the loop feeding points to short circuit LTE frequencies to ground but open circuit for NFC frequencies and VHF frequencies.
  • Slot antenna feeding points may be located along the bottom turn of the loop antenna at appropriate distances from these grounding points for respective bands, such as at half wavelengths distances.
  • Various embodiments of the present inventive concepts include a wireless electronic device used for multi-antenna functionality.
  • the wireless electronic device includes a processor, a ground plane, and a loop antenna that includes two or more turns that are separated from the ground plane.
  • the loop antenna includes two or more turns that are separated from the ground plane.
  • the loop antenna is configured to resonate in a first frequency band based on the two or more turns of the loop antenna.
  • the loop antenna is configured to resonate in a second frequency band based on a first portion of the two or more turns of the loop antenna.
  • the antenna system includes a notch antenna including a second portion of the loop antenna and a notch between the second portion of the loop antenna and the ground plane.
  • the notch antenna is configured to resonate in a third frequency band.
  • the processor is configured to process signals in the first frequency band, the second frequency band, and/or the third frequency band.
  • Figures 1 A, IB, and 2 are various antenna system designs, according to various embodiments described herein.
  • Figure 3 is a remote key device, according to various embodiments described herein.
  • FIGS 4A, 4B, 5A, 5B, 5C, 6A, 6B, 7, 8, and 9 illustrate various antenna configurations, according to various embodiments described herein.
  • Figure 10 is a block diagram of a wireless electronic device, according to various embodiments described herein.
  • the term“key” may include a traditional key locking, unlocking, and/or starting the ignition of a vehicle or other object, a remote control fob that includes one or more antennas for key location detection and/or communication with the vehicle and/or a network, and/or an application that controls access to an object.
  • IoT Internet of Things
  • peer-to-peer communication may be used to provide remote functionality to control vehicles or other objects.
  • Communication with various elements in a vehicle may use different RF frequencies with various protocols.
  • a key fob may use cellular, Very High Frequency (VHF), Ultra-Wide Band (UWB), Near Field Communication (NFC), Bluetooth, Bluetooth Low Energy (BLE), Industrial, Scientific, and Medical (ISM), GNSS/GPS, and/or WLAN communication with a vehicle, network, and/or device.
  • VHF Very High Frequency
  • UWB Ultra-Wide Band
  • NFC Near Field Communication
  • BLE Bluetooth Low Energy
  • ISM Industrial, Scientific, and Medical
  • GNSS/GPS Wireless Fidelity
  • WLAN Wireless Local Area Network
  • GNSS may include, for example, GPS, GLONASS, Galileo, Beidou and other regional systems.
  • Conventional systems may include various individual antenna modules and/or systems to communicate in each frequency band.
  • the footprint of a device using individual antennas for different frequency bands may be too large to fit in a key fob that a user may wish to carry in a pocket or handbag.
  • Various embodiments described herein arise from the recognition that an integrated multi-antenna solution may provide a smaller footprint suitable for use in a key fob.
  • Various embodiments may include an assembly of metal rings that surround the key fob that provide a desirable appearance as well as mechanical strength. These metal rings may be part of one or more antennas for providing various communications and may have suitable antenna apertures and loop areas that improve communication range.
  • FIGS 1A and IB illustrate a design for an antenna system in a remote device, according to various embodiments.
  • Figure 1 A is a view in the x-y plane of the antenna system whereas
  • Figure IB is a view in the y-z plane.
  • antenna system 100 may include loop antenna 110, which is a Very High Frequency (VHF) loop antenna operating in a frequency range of 315 MHz to 433 MHz band.
  • the 433 MHz may be associated with the Industrial, Scientific, and Medical (ISM) band.
  • the VHF antenna may be used to control heaters for the vehicle and/or engine.
  • Loop antenna 110 may be above a Printed Circuit Board (PCB) 140.
  • PCB Printed Circuit Board
  • An Ultra-Wide Band (UWB) antenna 130 may be on the PCB 140 and resonate in a UWB frequency range, such as 6.5 GHz to 7.5 GHz.
  • UWB frequencies may be between 3 GHz and 10 GHz and may be used for applications such as key positioning relative to the car in order to detect if the key in inside the vehicle to allow access to the ignition.
  • Near Field Communication (NFC) antenna 160 may be used for close range communication applications, such as contactless payment systems, and/or to initiate and set up Bluetooth communication.
  • Some embodiments of the NFC circuits can transmit within the globally available and unlicensed radio frequency ISM band of 13.56 MHz, with a bandwidth of almost 2 MHz.
  • Antenna elements 120 may be on the PCB 140 and provide Bluetooth and/or WLAN communication in frequencies between 2400 MHz to 2483 MHz. Antenna elements 120 may be arranged as a narrow conductive track or loop that is printed in PCB 140. A ferrite sheet 150 may be between the PCB 140 and NFC antenna 160 to provide isolation between the various antennas on the PCB 140 and the NFC antenna 160. A wireless power transfer mechanism 170 may be on the bottom of the housing of the wireless antenna system 100.
  • FIG. 2 is illustrates an antenna system design on a PCB.
  • PCB 210 may include a low frequency (LF) coil antenna 220 operating in a 22 kHz frequency band, a VHF loop antenna 230, a Long Term Evolution (LTE) Category Ml antenna 240, a Global Positioning System (GPS) antenna 250, a BLE/WLAN antenna 260 and/or a UWB antenna 270. Due to radiation properties of the various antennas, a distance 235 of, for example, 10 mm clearance may be needed between the LTE antenna 240 and other active components in PCB area 280. Thus, PCB area 280 provides a limited area in which active circuit components may be placed on the PCB 210.
  • LF low frequency
  • LTE Long Term Evolution
  • GPS Global Positioning System
  • PCB area 280 provides a limited area in which active circuit components may be placed on the PCB 210.
  • PCB area 290 may be free from the ground plane that is in a layer of the PCB, to provide isolation between various antennas and/or to prevent ground current loops.
  • PCB 210 may be, for example, of size 85 mm x 45 mm.
  • FIG. 3 is a remote key device that may provide key functionality for a vehicle.
  • key device 300 may have a housing that includes various antenna system elements are described herein.
  • Figure 4A illustrates an antenna configuration that may be included in the key device 300 of Figure 3.
  • antenna system 400 may include two or more loops, which may be also referred to as turns.
  • antenna system 400 may include loop 410, loop 420, and loop 430. Although three loops are described in this non-limiting example, any number of two or more loops may be used within the scope of the present inventive concepts, with variations in filters to provide antennas for various applications.
  • the two or more loops or turns may provide a closed loop antenna as illustrated by the closed loops of Figure 4 A.
  • a portion of the closed loop antenna 400 may be reconstructed to have a slot (not shown) between the loops 420 and 430 and ground plane 450.
  • the closed loop antenna 400 may comprise several grounding points to produce different effective lengths of the slot, such as a half wavelength for the slot length, which is reasonably insensitive to capacitance from the human body.
  • an open ring antenna as described by prior art may operate by a different principle by using an open point to produce a quarter wavelength IF A antenna or monopole, which usually are more sensitive to human hand detuning. Details regarding the slot will be discussed further with respect to Figure 8.
  • the two or more loops may provide inductance that provides one or more antennas radiating at various respective frequencies.
  • a portion of loop 410 and a portion of loop 430 may function as a YHF antenna operating in a frequency range of 315 MHz to 433 MHz.
  • Loop 410 and loop 430 may function as an NFC antenna operating in a frequency around 13 MHz.
  • the NFC antenna may include loops 410, 420, and/or 430.
  • a ground plane 450 may be spaced apart and parallel to the planes of loops 410, 420, and/or 430.
  • the ground plane 450 may be within the boundaries of loops 410, 420, and/or 430 and thus may not be overlapped by loops 410, 420, and/or 430.
  • a high pass filter 440 may be arranged between loop 410 and loop 430 and be configured to filter VHF frequencies between 315 MHz to 433 MHz, thus providing immunity in this frequency to the NFC antenna between loop 410 and loop 430.
  • the loop antenna may be configured to resonate in a second frequency band (i.e. YHF band) further based on arranging the high pass filter 440 between the respective portion of the two of the two or more turns of the loop antenna, such as portions of loops 410 and 430.
  • High pass filter 440 may include a capacitor in the range between 68 pF to 680 pF, for example.
  • loop 430 may be electrically grounded at LTE frequencies using additional filters.
  • one or more of the loops 410, 420, and/or 430 may be printed on the inside walls of the frame of key device 300 or may be a part of a flexible film on the inside walls of the key device 300 of Figure 3.
  • the two or more turns may be in respective planes that are parallel to the ground plane.
  • the ground plane may be spaced apart from the two or more turns.
  • the two or more turns may be arranged as a coil around the ground plane.
  • the coil may be a spiral shape and/or may be continuous circulating.
  • Two or more turns may form a spiral and/or coil that are continuously descending towards the ground plane.
  • the loop antenna may be configured to resonate in a first frequency band based on each of the two or more turns of the loop antenna.
  • the loop antenna is configured to resonate in a first frequency band based on two or more complete turns of the loop antenna.
  • the two or more turns may be complete turns for a loop antenna that is used for low frequency NFC at 38Mhz.
  • Figure 4B is a portion of the antenna system 400 of Figure 4A.
  • the high pass filter 440 of Figure 4A between loop 410 and loop 430 filters the NFC frequencies with respect to loop 410 and loop 420. Therefore, at the VHF frequencies between 315 MHz to 433 MHz, the active part of antenna system 400 appears as shown in Figure 4B, with loop 510 being electrically inactive at VHF frequencies between 315 MHz to 433 MHz. Minor coupling may occur from loop 420 into the VHF frequency signals on loop 410 and 430, but may not have a significant impact on the performance of the VHF antenna.
  • Figure 4B illustrates the active portion of loop 410 and 420 with respect to the VHF frequencies as being approximately a half turn with a 90° turn since a lower inductance is needed for VHF frequencies.
  • FIG. 5A and Figure 5B provide a detailed view of the antenna system 400 of Figure 4A.
  • the high pass filter 440 between loop 410 and loop 430 filters the NFC frequencies with respect to loop 410 and loop 420.
  • Band pass filter 550 may be connected between loop 420 and ground plan 450.
  • Band pass filter 550 may be connected between loop 430 and ground plan 450.
  • Capacitors 510 and 530 of band pass filters 550 and 560, respectively, may short circuit the LTE and GHz frequencies, respectively.
  • Inductors 520 and 540 may be conductive for the NFC frequencies.
  • Band pass filter 550 may include capacitor 510 and/or inductor 520.
  • Band pass filter 560 may include capacitor 530 and/or inductor 540.
  • Figure 5C illustrates a slot antenna, according to various embodiments.
  • the slot antenna may include a slot 580 in ground plane 450.
  • slot 580 is illustrated as being completely surrounded by the ground plane 450, in some embodiments, slot 580 may extend to an edge of the ground plane, forming a notch antenna.
  • the length of slot 580 may be a half wavelength (l/2) wherein a notch antenna length may be a quarter wavelength (l/4).
  • a feed cable 570 may feed the notch antenna at a feed point 590.
  • the antenna system 400 of Figure 4A may include two or more complete turns (such as loop 410 and loop 420) may switch the connection at certain feed points (which will be discussed with respect to Figure 8) to another a part of the single loop for the second frequency (such as ISM 433Mhz) with the grounding to the ground plane. In other words, switching may be utilized to switch between Wifi, BLE, and UWB frequencies.
  • Slot 580 may be formed in the antenna 400 with a length of about half wavelength for use in GHz antennas.
  • FIGS 6A and 6B illustrate various embodiments of the antenna system with respect to a housing for the key device.
  • the antenna system may be integrated with a housing of the key device and/or be arranged on the housing of the key device.
  • portions of one of more loops of the antenna system may be outside of the key device housing in order to provide a near-full metal body housing 600 for the key device.
  • loop 610 of the antenna system may be inside the housing 600, such as inside the top of the housing 600.
  • Loop 620 and Loop 630 may be metal rings on the outside of the housing 600.
  • the NFC antenna may include loop 610, loop 620, and loop 630.
  • the VHF antenna may include loop 610 and loop 630.
  • the housing may include loop 640 along the outside periphery of the housing 640.
  • Loop 650 and loop 660 may be inside housing 600 of the key device.
  • the NFC antenna may include loop 640, loop 650, and loop 660.
  • the VHF antenna may include loop 650 and loop 660.
  • a wireless charging coil may be at the bottom of the housing 600, under a ground plane that is inside the housing 600.
  • FIG. 7 illustrates a multi-antenna car key including a multi-antenna antenna system.
  • housing 700 may include a metal body 710, with a sleek, almost seamless ring and one or more slots on a ground plane. Housing 700 may have a form factor that is suitable for placing in a pocket or handbag, such as, for example, 40mm x 70- 80mm.
  • Metal body 710 may include an opening 770.
  • the housing 700 may include a ground plane 740, filters 750 and 760 between the ground plane and metal body 710 that comprises a loop of the antenna system. Loop 720 and loop 730 may be inside metal body 710 and be electrically separate from the metal body 710. Filters 750 and 760 between the ground plane and metal body 710 may provide isolation between various antennas of the antenna system.
  • Figure 8 illustrates multiple antennas radiating at frequencies for use in various applications, and integrates antennas such as ones illustrated in Figures 4A, 4B, 5A, 5B, 6A, 6B, and/or 7 into a multiple antenna system that reuses various components across different frequencies.
  • a wireless antenna system is illustrated.
  • Ground plane 815 on PCB 800 may be surrounded by various loop antennas as illustrated in Figures 4A, 4B, 5A, 6A, 6B, and/or 7.
  • Portions 816, 822, 830, 840, and/or 850 of the loop antenna may correspond to loops 410, 420, and/or 430 of Figure 4A.
  • an LTE antenna in the LTE low band may use portion 816.
  • the LTE high 1 band (1710 MHz to 2170 MHz) may use portion 822 and a slot portion 832 between the ground plane 815 and portion 822 and may correspond to loop 430 of Figure 4A.
  • the portions 816, 822, 830, 840, and/or 850 of the loop antenna may be of a shape of a wide bezel surrounding the housing or a narrower wire attached to the inner walls of the housing or printed on a periphery of the PCB 800.
  • a bezel may be a metal or conductive ring.
  • Portions 816 of the loop may be a total length of a half wavelength (l/2) at 800 MHz, i.e. in the LTE low band.
  • Feed point 886 may be a common feed point for the LTE antenna bands.
  • a notch 870 may be used to form a notch antenna for UWB frequencies.
  • a notch will refer to an opening in the ground plane or other conductor.
  • a slot may be used to form a slot antenna.
  • the term“slot” will be used interchangeably with“slit” and will refer to an opening in the ground plane and/or the PCB. Additionally, the term“slot antenna” and“slit antenna” will be used interchangeably.
  • a slot antenna may be formed when the PCB 800 has a gap or opening that extends a given length that is based on the resonance frequency of the slot antenna.
  • the slot may be filled with a dielectric to provide a shrunken physical size and/or length of the antenna, and/or to improve antenna performance.
  • the slot antenna may be fed by a bridge across the slot at a position that is a distance away from the edge of the slot, based on the desired impedance and/or bandwidth of the slot antenna.
  • portion 850 of the loop, filter 894, and/or a notch 870 in the ground plane may produce a notch antenna that resonates at frequencies appropriate for UWB (3.1 GHz to 10 GHz) antennas.
  • a combination of the notch 870 and a portion of the loop antenna may resonate in Wifi and/or BLE frequency bands, such as 2.4 GHz to 2.483 GHz.
  • a longer slot may be formed by a combination of the notch 870, which may have the shape of a slot, such that notch 870 may be used as starting point (i.e. common feed port) for an antenna that is the combination of notch 870 and portion 850 of the loop filter.
  • the notch antenna may be formed between any of the turns of the loop to the ground plane.
  • the length of notch 870 may be related to the wavelength of its resonance frequency such that the longer the notch length, the longer the wavelength and thereby the lower the resonance frequency.
  • the width of the notch is a design parameter for optimizing bandwidth and impedance matching.
  • a common feed point 884 and portion 850 of the loop antenna may provide for the Wifi, BLE, and UWB antennas. Therefore, filter 896 and/or filter 894 may be needed so that the Wifi, BLE, and UWB antennas may coexist in the integrated antenna system.
  • a switch may be utilized to switch between the Wifi, BLE, and UWB frequencies.
  • the notch antenna may resonate in the WiFi 5GHz frequency band.
  • antenna element 860 may be a conductive trace on PCB 800 and radiate in the LTE high2 band (2500 MHz to 2690 MHz) when excited at feed point 886.
  • Slot 884 and portions 830 and/or 840 of the loop may be excited at feed point 882 and radiate in the GNSS frequencies between 1.1 GHz to 1.6 GHz, or more specifically from 1575 MHz to 1610 MHz.
  • a gap or opening between filter 890 and filter 892 may correspond to opening 770 of Figure 7. This opening between filter 890 and filter 892 may prevent shorting of the various loops of the antenna system. Sections of the loop may be filtered to provide immunity at various frequencies.
  • Filter 890 may filter the NFC frequencies to prevent NFC frequencies from radiating onto the VHF antenna.
  • Filter 892 may filter VHF frequencies to prevent VHF frequencies from radiating onto the NFC antenna.
  • Filters 890 and 892 may include capacitors between 33 pF and 100 pF to filter LTE frequencies 700 MHz to 2700 MHz and prevent the LTE frequencies from the operations of the antennas as the VHF and/or NFC frequencies. Filters 890 and 892 may be connected to the ground plane 815 of the PCB .
  • FIG. 9 is a block diagram of a wireless electronic device, including the antenna configurations of Figures 1A, IB, 2, 4, 5A-5C, 6A, 6B, 7, and/or 8.
  • the wireless electronic device 900 may include antenna to perform operations according to one or more embodiments described herein.
  • the wireless electronic device 900 includes a processor circuit 902 and a memory circuit 910 containing computer readable program code 912.
  • the processor circuit 902 may include one or more data processing circuits, such as a general purpose and/or special purpose processor, e.g., microprocessor and/or digital signal processor, which may be collocated or distributed across one or more networks.
  • the processor circuit 902 may configured to execute the computer readable program code 912 in the memory 910 to perform at least some of the operations described herein as being performed by the wireless electronic device 900.
  • a network interface 920 is coupled to the processor circuit 902 and may communicate with a server or other external network entity, directly or indirectly.
  • a transceiver 930 may be coupled to the processor circuit 902.
  • An antenna 940 may be coupled to the transceiver 930 and may be configured according to one or more embodiments described herein.
  • an antenna system that includes multiple loops that provide integrated antennas that radiate in multiple frequency ranges. Portions of loops, filters, and/or slots are utilized to object UWB, VHF, NFC, Wifi, BLE, GNSS, and/or LTE antennas in a configuration that could fit in a key remote.
  • a multiturn or multi-ring or multi-loop form factor has been provided.
  • a seamless metal bezel antenna may be used for GHz frequency bands including cellular, Wifi, GNSS, UWB, etc. with multiple feed lines.
  • the bezel antenna may be combined with a notch or slot on the PCB. Multiple low band and/or high band filters are used at the ground points to achieve the multifunctional antenna system.
  • a robust industry design with mechanically strong metal rings is provided.
  • Example embodiments are described herein with reference to block diagrams and/or flowchart illustrations of computer-implemented methods, apparatus (systems and/or devices) and/or computer program products. It is understood that a block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions that are performed by one or more computer circuits.
  • These computer program instructions may be provided to a processor circuit of a general purpose computer circuit, special purpose computer circuit, and/or other programmable data processing circuit to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, transform and control transistors, values stored in memory locations, and other hardware components within such circuitry to implement the functions/acts specified in the block diagrams and/or flowchart block or blocks, and thereby create means (functionality) and/or structure for implementing the functions/acts specified in the block diagrams and/or flowchart block(s).
  • These computer program instructions may also be stored in a tangible computer-readable medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer- readable medium produce an article of manufacture including instructions which implement the functions/acts specified in the block diagrams and/or flowchart block or blocks.
  • a tangible, non-transitory computer-readable medium may include an electronic, magnetic, optical, electromagnetic, or semiconductor data storage system, apparatus, or device. More specific examples of the computer-readable medium would include the following: a portable computer diskette, a random access memory (RAM) circuit, a read-only memory (ROM) circuit, an erasable programmable read-only memory (EPROM or Flash memory) circuit, a portable compact disc read-only memory (CD-ROM), and a portable digital video disc read-only memory (DVD/BlueRay).
  • RAM random access memory
  • ROM read-only memory
  • EPROM or Flash memory erasable programmable read-only memory
  • CD-ROM compact disc read-only memory
  • DVD/BlueRay portable digital video disc read-only memory
  • the computer program instructions may also be loaded onto a computer and/or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer and/or other programmable apparatus to produce a computer- implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.
  • embodiments of the present disclosure may be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.) that runs on a processor such as a digital signal processor, which may collectively be referred to as "circuitry," "a module” or variants thereof.
  • These computer program instructions may also be stored in a computer readable medium that when executed can direct a computer, other programmable data processing apparatus, or other devices to function in a particular manner, such that the instructions when stored in the computer readable medium produce an article of manufacture including instructions which when executed, cause a computer to implement the function/act specified in the flowchart and/or block diagram block or blocks.
  • the computer program instructions may also be loaded onto a computer, other programmable instruction execution apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatuses or other devices to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.
  • each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s).
  • the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
  • each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
  • the functions/acts noted in the blocks may occur out of the order noted in the flowcharts. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne un système d'antennes pour un dispositif électronique sans fil comprenant un plan de sol, et une antenne cadre fermée qui comprend au moins deux spires qui sont séparées du plan de sol. L'antenne cadre comprend au moins deux spires qui sont séparées du plan de sol. L'antenne cadre est conçue pour résonner dans une première bande de fréquence sur la base des au moins deux spires de l'antenne cadre. L'antenne cadre est conçue pour résonner dans une deuxième bande de fréquence sur la base d'une première partie des au moins deux spires de l'antenne cadre. Le système d'antennes comprend une antenne à encoche comprenant une seconde partie de l'antenne cadre et une encoche entre la seconde partie de l'antenne cadre et le plan de sol. L'antenne à encoche est conçue pour résonner dans une troisième bande de fréquence. L'invention concerne également des systèmes et des procédés connexes.
PCT/US2020/017429 2019-02-13 2020-02-10 Systèmes et dispositifs pour solutions à antennes multiples WO2020167627A1 (fr)

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SE1930059 2019-02-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022166444A1 (fr) * 2021-02-08 2022-08-11 华为技术有限公司 Antenne et dispositif terminal
US20220281412A1 (en) * 2021-03-02 2022-09-08 Hyundai Mobis Co., Ltd. Smart key remote controller and low power operating method of the same
EP4283787A1 (fr) * 2022-05-25 2023-11-29 Continental Automotive Technologies GmbH Agencement d'antenne pour une clé électronique
WO2024049753A1 (fr) * 2022-08-31 2024-03-07 Abbott Diabetes Care Inc. Système, appareil et dispositifs de surveillance d'analyte

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5758402A (en) * 1980-09-24 1982-04-08 Dx Antenna Co Ltd Loop antenna common use for two frequencies
WO2016036450A1 (fr) * 2014-09-05 2016-03-10 Qualcomm Incorporated Couvercle arrière métallique à communications et transfert de puissance sans fil combinés
US20170214422A1 (en) 2016-01-27 2017-07-27 Lg Electronics Inc. Watch-type mobile terminal including antenna

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5758402A (en) * 1980-09-24 1982-04-08 Dx Antenna Co Ltd Loop antenna common use for two frequencies
WO2016036450A1 (fr) * 2014-09-05 2016-03-10 Qualcomm Incorporated Couvercle arrière métallique à communications et transfert de puissance sans fil combinés
US20170214422A1 (en) 2016-01-27 2017-07-27 Lg Electronics Inc. Watch-type mobile terminal including antenna

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022166444A1 (fr) * 2021-02-08 2022-08-11 华为技术有限公司 Antenne et dispositif terminal
US20220281412A1 (en) * 2021-03-02 2022-09-08 Hyundai Mobis Co., Ltd. Smart key remote controller and low power operating method of the same
EP4283787A1 (fr) * 2022-05-25 2023-11-29 Continental Automotive Technologies GmbH Agencement d'antenne pour une clé électronique
WO2024049753A1 (fr) * 2022-08-31 2024-03-07 Abbott Diabetes Care Inc. Système, appareil et dispositifs de surveillance d'analyte

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