WO2017193206A1 - Stacked patch antennas using dielectric substrates with patterned cavities - Google Patents

Stacked patch antennas using dielectric substrates with patterned cavities Download PDF

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Publication number
WO2017193206A1
WO2017193206A1 PCT/CA2017/050024 CA2017050024W WO2017193206A1 WO 2017193206 A1 WO2017193206 A1 WO 2017193206A1 CA 2017050024 W CA2017050024 W CA 2017050024W WO 2017193206 A1 WO2017193206 A1 WO 2017193206A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
cavities
ceramic layer
ceramic
accordance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CA2017/050024
Other languages
English (en)
French (fr)
Inventor
Ning Yang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novatel Inc
Original Assignee
Novatel 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 Novatel Inc filed Critical Novatel Inc
Priority to CN201780023316.4A priority Critical patent/CN109075437B/zh
Priority to JP2018554404A priority patent/JP2019515536A/ja
Priority to KR1020187032292A priority patent/KR20190002515A/ko
Priority to CA3017262A priority patent/CA3017262C/en
Priority to KR1020237022517A priority patent/KR102631849B1/ko
Priority to EP17795212.4A priority patent/EP3455905B1/en
Priority to AU2017263727A priority patent/AU2017263727B2/en
Publication of WO2017193206A1 publication Critical patent/WO2017193206A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas

Definitions

  • a patch antenna is often utilized as a low-profile and low-cost multi-constellation global navigation satellite system (GN SS) antenna due to its planar configuration and case of integration with circuit boards.
  • GN SS global navigation satellite system
  • ceramic material As the substrate. Typical considerations of using ceramics arc its high DK ( ⁇ ' dielectric constant) and low dielectric loss. Depending on the compounds and composites, the DK of the ceramics can vary from the range of approximately 4 to several hundred.
  • two or more stacked patches are required to resonate at each frequency.
  • the fundamental mode of operation is TM 1 1 mode, which has an uppcr-hcmisphcrc radiation pattern that works well for GNSS applications.
  • the fundamental mode's resonance frequency is given by
  • the disadvantages of the prior art are overcome by utilizing a stacked patch antenna using an exemplary molded ceramic puck with perforated air-cavities as the substrate.
  • the substrate for the antenna is not completely filled with ceramic, but some part filled with air.
  • the effective permittivity in the perforated dielectric region is determined from the porosity, or void fraction of the perforation, defined as the fraction of the volume of the voids-space over the total bulk volume of the material.
  • the effective permittivity in the patterned area of the ceramic is reduced so that the L I -band resonance occupied volume is illustratively increased without changing the overall material weight significantly.
  • the Q- factor decreases and the operation bandwidth is substantially widened.
  • the weight of the ceramic is decreased due to the perforation.
  • the electromagnetic field distribution at resonance is changed by the perforation in the substrate. This gives the designer the flexibility to change the size of the patches, and therefore the bandwidth by varying the perforation position, size and pattern.
  • stacked patch antenna Using illustrative dual-band stacked patch antenna, only one set of direct feeds to the top patch radiator is applied since the excitation of the bottom patch (L2 band) clement is through parasitic coupling.
  • the stacked patch can be modeled by two coupled resonators. The coupling affects the impedance bandwidth of the bottom patch element; therefore the capabi lity of varying the top patch size facilitates possible control over the coupling and the impedance matching.
  • the frequency ratio between the high order mode and fundamental mode can be controlled. This is possible as the voltage peaks for different modes of resonating standing waves arc located at different regions of the antenna. This is especially useful in the situation where harmonic or higher-frequency radiation needs to be controlled.
  • Fig. 1 is a side view of an exemplary stack patch antenna in accordance with an illustrative embodiment of the present invention
  • Fig. 2 is a bottom view of ceramic component of a patch antenna showing a cavity in accordance with an illustrative embodiment of the present invention
  • Fig. 3 is a perspective view of an exemplary stack patch antenna in accordance with an illustrative embodiment of the present invention.
  • Fig. 4 is a side view of an exemplary stack patch antenna having a plurality of cavities in accordance with an illustrative embodiment of the present invention
  • Fig. 5 is a bottom view of ceramic component of a patch antenna showing a plurality of cavities in accordance with an illustrative embodiment of the present invention
  • Fig. 6A is a chart illustrating the antenna without perforation in accordance with an illustrative embodiment of the present invention
  • Fig. 6B is a chart illustrating the antenna with perforation in accordance with an illustrative embodiment of the present invention.
  • Fig. 7A is a chart illustrating the high band gain of a RHCP antenna with and without perforation in accordance with an illustrative embodiment of the present invention.
  • Fig. 7B is a chart illustrating the low band gain of a RHCP antenna with and without perforation in accordance with an illustrative embodiment of the present invention.
  • the bandwidth of an exemplary ceramic antenna is designable and flexible. I llustratively, this is achieved by molding the ceramic with perforated cavities and using the perforated ceramic as the substrate for an exemplary patch antenna.
  • the reason for perforating cavities, rather than holes, is to keep top-surface of the ceramic unaffected so that the same metallization process as conventional non-perforated ceramic may be used in accordance with illustrative embodiments of the present invention.
  • Fig. 1 is a side view of an exemplary dual stack patch antenna 100 in accordance with an illustrative embodiment of the present invention.
  • the dual stack patch antenna 100 illustratively comprises of a first metal layer 105, a first ceramic layer 1 10, a second metal layer 1 15 and a second ceramic layer 120.
  • the first metal layer is disposed on a top surface of the first ceramic later 1 10.
  • the second metal later 1 15 is disposed between a bottom surface of the fist ceramic layer and a top surface of the second ceramic layer 120.
  • the first ceramic layer 1 10 comprises a cavity 125 that comprises of an air void.
  • the cavity 1 25 may range in size in accordance with alternative embodiments of the present invention.
  • the second ceramic layer 120 comprises of a second cavity 130 that may range in size in accordance with alternative embodiments of the present invention.
  • both cavities 125, 130 are located on a bottom portion of the respective ceramic layers 1 10, 120. That is, the cavities 125, 130 are located on a bottom side of the respective ceramic layers.
  • a volume of the first cavity 125 is larger than a volume of the second cavity 130.
  • the two cavities may have the same and/or differing volumes. As such, the description of the first cavity having a larger volume than the second cavity should be taken as exemplary only.
  • one or more through holes 135 arc provided to enable feed wires and/or pins to be passed to the first metal layer 105 and/or the second metal layer 1 15 in accordance with illustrative embodiments of the present invention.
  • through holes 135. it should be noted that in alternative embodiments of the present invention varying numbers of through holes may be utilized. As such, the description of four through holes should be taken as exemplary only.
  • Fig. 2 is a bottom view 200 of ceramic component 1 10 of a patch antenna showing a cavity 125 in accordance with an illustrative embodiment of the present invention.
  • the ceramic component 1 10 has 10 sides and the cavity 125 is similarly ten sided.
  • the ceramic component and/or cavity may have differing geometries. For example, both may be substantially circular in shape, etc.
  • Fig. 3 is a perspective view 300 of an exemplary stack patch antenna 100 in accordance with an illustrative embodiment of the present invention.
  • the view 300 is a cut away view showing the various components of the antenna 100.
  • the view 300 illustrative the plurality of through holes 135 extending from a base of the antenna 100.
  • the view 300 further illustrates the first metal layer 105 disposed on top of the first ceramic layer 1 10 having a cavity 125, The second metal layer 1 15 is then disposed on top of the second ceramic layer 120 having a second cavity 130.
  • Fig. 4 is a side view of an exemplary stack patch antenna 400 having a plurality of cavities in accordance with an illustrative embodiment of the present invention.
  • the antenna 400 comprises of a first metal layer 105 disposed on the top of a first ceramic layer 1 10.
  • a second metal layer 1 15 is disposed between a bottom side of the first ceramic layer 1 10 and a top side of the second ceramic layer 120, one or more though holes 135 are arranged through the various layers to enable a signal to be fed/rcccivcd from the first metal layer 105.
  • a plurality of cavities 125 are disposed along the bottom of the first ceramic layer 120.
  • a plurality of cavities 1 30 are disposed along a bottom side of the second ceramic layer 120.
  • Fig. 5 is a bottom view 500 of ceramic component 1 10 of a patch antenna 400 showing a plurality of cavities 125 in accordance with an illustrative embodiment of the present invention.
  • each of the ceramic layers 1 10, 120 include a plurality of cavities 125, 130.
  • the cavities are configured in a round shape.
  • the cavities may have any shape and/or size. As such, the depiction of the cavities 125 should be taken as exemplary only.
  • Fig. 5 depicts cavities 1 25 within first ceramic layer 1 10, the cavities 130 within second ceramic layer 120 may be similarly arranged. As such, the description of Fig.
  • first ceramic layer 1 10 should be taken as exemplary only. It should be noted that in accordance with an illustrative embodiment of the present invention, the plurality of cavities in a ceramic layer arc arranged in a symmetric or substantial ly symmetric manner.
  • Fig. 6A is a chart illustrating an i llustrative antenna without perforation in accordance with an illustrative embodiment of the present invention.
  • Fig. 6B is a chart illustrating an antenna with exemplary cavity perforations in accordance with an illustrative embodiment of the present invention.
  • Both Figs. 6A and 6B illustrate the wideband sweep of the S parameters of an antenna with and without the cavities as described in accordance with illustrative embodiments of the present invention.
  • those antennas with perforations i.e., those antennas with cavities in accordance with embodiments of the present invention
  • Fig. 7A is a chart illustrating the high band gain of a RHCP antenna with and without perforation in accordance with an illustrative embodiment of the present invention. As can be observed from Fig. 7 A, there is an improved gain when the antennas have the perforations (cavities) in accordance with an illustrative embodiment of the present invention.
  • Fig. 7B is a chart illustrating the low band gain of a RHCP antenna with and without perforation in accordance with an illustrative embodiment of the present invention. As can be observed from Fig. 7B, there is an improved gain when the antennas have the perforations (cavities) in accordance with an illustrative embodiment of the present invention.

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  • Waveguide Aerials (AREA)
PCT/CA2017/050024 2016-05-10 2017-01-10 Stacked patch antennas using dielectric substrates with patterned cavities Ceased WO2017193206A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CN201780023316.4A CN109075437B (zh) 2016-05-10 2017-01-10 使用具有图案化空腔的电介质基板的堆叠式贴片天线
JP2018554404A JP2019515536A (ja) 2016-05-10 2017-01-10 パターン化されたキャビティを有する誘電体基板を用いた積層パッチアンテナ
KR1020187032292A KR20190002515A (ko) 2016-05-10 2017-01-10 패터닝된 공동들을 갖는 유전체 기판들을 사용하는 스택 패치 안테나들
CA3017262A CA3017262C (en) 2016-05-10 2017-01-10 Stacked patch antennas using dielectric substrates with patterned cavities
KR1020237022517A KR102631849B1 (ko) 2016-05-10 2017-01-10 패터닝된 공동들을 갖는 유전체 기판들을 사용하는스택 패치 안테나들
EP17795212.4A EP3455905B1 (en) 2016-05-10 2017-01-10 Stacked patch antennas using dielectric substrates with patterned cavities
AU2017263727A AU2017263727B2 (en) 2016-05-10 2017-01-10 Stacked patch antennas using dielectric substrates with patterned cavities

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/151,122 2016-05-10
US15/151,122 US10454174B2 (en) 2016-05-10 2016-05-10 Stacked patch antennas using dielectric substrates with patterned cavities

Publications (1)

Publication Number Publication Date
WO2017193206A1 true WO2017193206A1 (en) 2017-11-16

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Application Number Title Priority Date Filing Date
PCT/CA2017/050024 Ceased WO2017193206A1 (en) 2016-05-10 2017-01-10 Stacked patch antennas using dielectric substrates with patterned cavities

Country Status (8)

Country Link
US (3) US10454174B2 (https=)
EP (1) EP3455905B1 (https=)
JP (2) JP2019515536A (https=)
KR (2) KR20190002515A (https=)
CN (1) CN109075437B (https=)
AU (1) AU2017263727B2 (https=)
CA (1) CA3017262C (https=)
WO (1) WO2017193206A1 (https=)

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CN108198788A (zh) * 2017-12-13 2018-06-22 深圳市时代速信科技有限公司 一种具有高射频信号垂直互联传输性能的ltcc基板
US10978780B2 (en) * 2018-01-24 2021-04-13 Samsung Electro-Mechanics Co., Ltd. Antenna apparatus and antenna module
US10700440B1 (en) * 2019-01-25 2020-06-30 Corning Incorporated Antenna stack
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CN111755805B (zh) * 2019-03-28 2022-02-18 Oppo广东移动通信有限公司 天线模组和电子设备
KR102211746B1 (ko) 2019-08-30 2021-02-03 삼성전기주식회사 칩 안테나
WO2022038868A1 (ja) * 2020-08-19 2022-02-24 株式会社村田製作所 通信装置
KR20220163658A (ko) 2021-06-03 2022-12-12 삼성전자주식회사 안테나를 포함하는 전자 장치
CN116683175A (zh) * 2023-07-05 2023-09-01 南通大学 一种双模条带型介质贴片的高增益滤波天线

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CN109728401B (zh) * 2018-12-26 2021-04-13 北京遥测技术研究所 一种高增益多频段导航天线

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KR102631849B1 (ko) 2024-02-01
US11888242B2 (en) 2024-01-30
US10454174B2 (en) 2019-10-22
CN109075437A (zh) 2018-12-21
JP7230116B2 (ja) 2023-02-28
US20200006854A1 (en) 2020-01-02
CN109075437B (zh) 2022-05-24
EP3455905A1 (en) 2019-03-20
AU2017263727A1 (en) 2018-09-06
EP3455905A4 (en) 2019-12-25
CA3017262A1 (en) 2017-11-16
KR20190002515A (ko) 2019-01-08
JP2021153330A (ja) 2021-09-30
AU2017263727B2 (en) 2021-09-02
KR20230107402A (ko) 2023-07-14
US20210257737A1 (en) 2021-08-19
CA3017262C (en) 2023-09-12
EP3455905B1 (en) 2024-06-05
US20170331192A1 (en) 2017-11-16
US10985467B2 (en) 2021-04-20
JP2019515536A (ja) 2019-06-06

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