CA2601837A1 - Patch antenna with electromagnetic shield counterpoise - Google Patents

Patch antenna with electromagnetic shield counterpoise Download PDF

Info

Publication number
CA2601837A1
CA2601837A1 CA002601837A CA2601837A CA2601837A1 CA 2601837 A1 CA2601837 A1 CA 2601837A1 CA 002601837 A CA002601837 A CA 002601837A CA 2601837 A CA2601837 A CA 2601837A CA 2601837 A1 CA2601837 A1 CA 2601837A1
Authority
CA
Canada
Prior art keywords
circuit board
printed circuit
electromagnetic shield
patch antenna
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.)
Granted
Application number
CA002601837A
Other languages
French (fr)
Other versions
CA2601837C (en
Inventor
Jorge Fabrega-Sanchez
Sidney Sitachitt
Andrew Stephen Poynot
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.)
Kyocera Corp
Original Assignee
Kyocera Wireless Corp.
Jorge Fabrega-Sanchez
Sidney Sitachitt
Andrew Stephen Poynot
Kyocera Corporation
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 Kyocera Wireless Corp., Jorge Fabrega-Sanchez, Sidney Sitachitt, Andrew Stephen Poynot, Kyocera Corporation filed Critical Kyocera Wireless Corp.
Publication of CA2601837A1 publication Critical patent/CA2601837A1/en
Application granted granted Critical
Publication of CA2601837C publication Critical patent/CA2601837C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/62—Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • 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
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/526—Electromagnetic shields
    • 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
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • 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
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Waveguide Aerials (AREA)
  • Support Of Aerials (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Details Of Aerials (AREA)

Abstract

A patch antenna includes a radiating element (104) positioned on one side of a printed circuit board (108) and an electromagnetic shield (106) positioned' on the opposite side of the printed circuit board. The electromagnetic shield forms at least a portion of a counterpoise and is connected to the ground of the PCB in at least one location. Design flexibility in positioning the antenna within a portable communication device is maximized while the size of the portable communication device is minimized.

Claims (20)

1. A patch antenna (102) comprising:
a radiating element (104) positioned on a first side of a printed circuit board (108), the positioned radiating element defining a radiating element footprint area of the printed circuit board extending from the first side to an opposite side of the printed circuit board; and the printed circuit board (108), wherein the printed circuit board comprises a ground (110) that does not extend into the radiating element footprint area;
a electromagnetic shield (106) positioned above the radiating element footprint area on the opposite side of the printed circuit board, the electromagnetic shield connected to the ground (110) of the printed circuit board on the opposite side of the printed circuit board, wherein the electromagnetic shield (106) forms at least a portion of a counterpoise of the patch antenna (102).
2. The patch antenna (102) in accordance with claim 1, wherein the counterpoise of the patch antenna (102) comprises the electromagnetic shield and at least a portion of the ground (110) of the printed circuit board (108).
3. The patch antenna (102) in accordance with claim 1, wherein the radiating element (104) is positioned at least partially over an opening (114) within the radiating element footprint area of the printed circuit board (108), wherein the opening (114) exposes at least a portion of the electromagnetic shield (106).
4. The patch antenna (102) in accordance with claim 1, wherein the radiating element (104) and the electromagnetic shield (106) at least partially form a planar inverted "F" antenna (PIFA).
5. The patch antenna (102) in accordance with claim 1, wherein the electromagnetic shield (106) is soldered to the ground (110) of the printed circuit board (108).
6. The patch antenna (102) in accordance with claim 5, wherein the electromagnetic shield (106) has four sides (406) and is soldered to a ground plane (402) along at least a portion of at least one of the four sides, wherein the ground plane (402) is connected to the ground (110).
7. The patch antenna (102) in accordance with claim 6, wherein the electromagnetic shield (106) is soldered to the ground plane (402) along at least a portion of only one of the four sides (406).
8. The patch antenna (102) in accordance with claim 1, wherein the electromagnetic shield (106) further includes a top surface that is offset from the opposite surface of the printed circuit board (108).
9. A patch antenna (102) comprising:
a printed circuit board (108) comprising a first side and a second side, a conductive ground layer (110), and an opening (114) extending from the first side to the second side and having an opening area;
a planar radiating element (104) having a radiating element footprint area, the planar radiating element (104) connected to the first side of the printed circuit board (108) and positioned at least partially over the opening (114) in the printed circuit board (108); and an electromagnetic shield (106) having a shield footprint area greater that the opening area, the electromagnetic shield (106) connected to the second side of the printed circuit board (108) and positioned under the opening (114), the electromagnetic shield (106) connected to the conductive ground layer (110) and forming at least a portion of a counterpoise of the patch antenna (102).
10. A patch antenna (102) in accordance with claim 9, wherein the electromagnetic shield (106) has four sides (406) and at least a portion of one side of the four sides is soldered to a conductive ground plane (402) of the printed circuit board that is connected to the conductive ground layer (110).
11. A patch antenna (102) in accordance with claim 10, wherein at least a portion of only one side of the four sides (406) is soldered to the conductive ground plane (402).
12. A patch antenna (102) in accordance with claim 10, wherein at least a portion of at least two sides of the four sides (406) are soldered to the conductive ground plane (402).
13. A patch antenna (102) in accordance with claim 12, wherein at least a portion of at least three sides of the four sides (406) are soldered to the conductive ground plane (402).
14. A patch antenna (102) in accordance with claim 9, the electromagnetic shield (106) further includes a top surface that is offset from the second sided of the printed circuit board (108).
15. A patch antenna (102) in accordance with claim 9, wherein the radiating element (104) and the electromagnetic shield (106) at least partially form a planar inverted "F" antenna (PIFA).
16. A patch antenna (102) in accordance with claim 15, wherein the PIFA is a multiband PIFA.
17. A patch antenna (102) in accordance with claim 16, wherein the radiating element (104) and the electromagnetic shield (106) have a separation distance to optimize operation of the PIFA in a frequency band of 824-894 MHZ, in a frequency band of 1850-1990 MHZ and a frequency band including 1575 MHZ.
18. A mobile communication device assembly comprising:
a printed circuit board (108) having a first side, a second side, an opening (114) that extends through the printed circuit board (108) from the first side to the second side, and a conductive ground layer (110, 402);

a plurality of electrical components (112) mounted to the first and second side of the printed circuit board (108);
a planar radiating element (104) coupled to at least one of the plurality of electrical components (112) and connected to the first side of the printed circuit board (108), the planer radiating element (104) positioned at least partially over the opening (114) in the printed circuit board (108), and positioned in an area of the printed circuit board (108) that does not include the conductive ground layer (110); and an electromagnetic shield (106) connected to the second side of the printed circuit board (108) and positioned under and covering the opening (114), the planar radiating element (104) and the electromagnetic shield (106) forming at least a portion of a patch antenna (102), wherein the electromagnetic shield (106) is a counterpoise of the patch antenna (102).
19. A mobile communication device assembly in accordance with claim 18, wherein the electromagnetic shield (106) has four sides (406) and at least a portion of one side of the four sides is soldered to the conductive ground layer (110, 402) of the printed circuit board.
20. A mobile communication device assembly in accordance with claim 19, wherein at least portions of each of at least two sides of the four sides (406) of the electromagnetic shield (106) are soldered to the conductive ground layer (110, 402).
CA2601837A 2005-03-23 2006-03-21 Patch antenna with electromagnetic shield counterpoise Expired - Fee Related CA2601837C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/087,171 2005-03-23
US11/087,171 US7629928B2 (en) 2005-03-23 2005-03-23 Patch antenna with electromagnetic shield counterpoise
PCT/US2006/010314 WO2006102364A1 (en) 2005-03-23 2006-03-21 Patch antenna with electromagnetic shield counterpoise

Publications (2)

Publication Number Publication Date
CA2601837A1 true CA2601837A1 (en) 2006-09-28
CA2601837C CA2601837C (en) 2012-08-07

Family

ID=36581887

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2601837A Expired - Fee Related CA2601837C (en) 2005-03-23 2006-03-21 Patch antenna with electromagnetic shield counterpoise

Country Status (9)

Country Link
US (1) US7629928B2 (en)
EP (1) EP1861893B1 (en)
JP (1) JP5249014B2 (en)
KR (1) KR20070116600A (en)
CN (1) CN101147293B (en)
AU (1) AU2006227102B2 (en)
BR (1) BRPI0609336A2 (en)
CA (1) CA2601837C (en)
WO (1) WO2006102364A1 (en)

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Also Published As

Publication number Publication date
WO2006102364A1 (en) 2006-09-28
JP5249014B2 (en) 2013-07-31
CN101147293A (en) 2008-03-19
AU2006227102B2 (en) 2009-11-05
CN101147293B (en) 2012-11-14
US7629928B2 (en) 2009-12-08
EP1861893A1 (en) 2007-12-05
JP2008533934A (en) 2008-08-21
BRPI0609336A2 (en) 2010-03-16
AU2006227102A1 (en) 2006-09-28
US20060214849A1 (en) 2006-09-28
KR20070116600A (en) 2007-12-10
EP1861893B1 (en) 2012-05-23
CA2601837C (en) 2012-08-07

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MKLA Lapsed

Effective date: 20160321