EP0982799B1 - Dielektrische Resonatorantenne - Google Patents

Dielektrische Resonatorantenne Download PDF

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Publication number
EP0982799B1
EP0982799B1 EP99202591A EP99202591A EP0982799B1 EP 0982799 B1 EP0982799 B1 EP 0982799B1 EP 99202591 A EP99202591 A EP 99202591A EP 99202591 A EP99202591 A EP 99202591A EP 0982799 B1 EP0982799 B1 EP 0982799B1
Authority
EP
European Patent Office
Prior art keywords
dielectric resonator
resonator antenna
plane
antenna
symmetry
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.)
Expired - Lifetime
Application number
EP99202591A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0982799A2 (de
EP0982799A3 (de
Inventor
Frank Philips Corp.Intellec.Prop. GmbH Heinrichs
Tilman Philips Corp.Intellec. Prop.GmbH Schlenker
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Intellectual Property and Standards GmbH
Koninklijke Philips Electronics NV
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 Philips Intellectual Property and Standards GmbH, Koninklijke Philips Electronics NV filed Critical Philips Intellectual Property and Standards GmbH
Publication of EP0982799A2 publication Critical patent/EP0982799A2/de
Publication of EP0982799A3 publication Critical patent/EP0982799A3/de
Application granted granted Critical
Publication of EP0982799B1 publication Critical patent/EP0982799B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01Q5/10—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
    • 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
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/24—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave constituted by a dielectric or ferromagnetic rod or pipe
    • 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
    • H01Q9/0485—Dielectric resonator antennas

Definitions

  • the invention relates to a dielectric resonator antenna (DRA) with an electrical conductive layer in a plane of symmetry.
  • DRA dielectric resonator antenna
  • the invention also relates to a transmitter and receiver with a dielectric resonator antenna with an electrically conductive layer in a plane of symmetry and on a mobile device with such an antenna.
  • Dielectric resonator antennas are known as miniaturized antennas made of ceramic or another dielectric for microwave frequencies.
  • a dielectric resonator the dielectric of which is surrounded by air with a dielectric constant of ⁇ r >> 1, this has a discrete spectrum of natural frequencies and natural modes.
  • the radiation of power is in the foreground with a resonator antenna. Since no conductive structures are used as the radiating element, the skin effect cannot have a negative effect. Such antennas therefore have low ohmic losses at high frequencies.
  • a compact, miniaturized structure can also be achieved.
  • Such a DR antenna 1 is shown in FIG. 1 in the basic form considered as an example.
  • other shapes are also possible, such as cylindrical or spherical geometries.
  • Dielectric resonator antennas are resonant components that only work in a narrow band around one of their resonance frequencies. The problem of antenna miniaturization is equivalent to lowering the working frequency for given antenna dimensions. Therefore the lowest resonance (TE z 111 mode) is used. This mode has a plane in which the tangential component of the electric field disappears, which is called plane of symmetry 2.
  • the resonance frequency remains the same as that of an antenna with the original dimensions. This is shown in Figure 2.
  • a further miniaturization can be achieved with this antenna by means of a dielectric with a high dielectric constant ⁇ r .
  • a material with low dielectric losses is preferably selected.
  • dielectric resonator antenna Such a dielectric resonator antenna is described in the article "Dielectric Resonator Antennas - A review and general design relations for resonant frequency and bandwidth", Rajesh K. Mongia and Prakash Barthia, Intern. Journal of Microwave and Millimeterwave Computer-aided Engineering, Vol. 4, No. 3, 1994, pages 230-247.
  • a cuboid dielectric resonator antenna is described in particular in FIG. 9 and the associated description.
  • the original structure can be halved without changing the field distribution or other resonance characteristics for the Te z 111 mode (page 244, right column, Lines 1-7).
  • the DRA is excited via a feed line with microwave power by being introduced into the stray field in the vicinity of a microwave line (for example a microstrip line or the end of a coaxial line).
  • An antenna is known from EP 0 790 663 A, which uses the known SMD technology (Soldering on the surface of the board) is mounted on a circuit board (PCB).
  • the antenna consists of a dielectric or magnetic substrate and has two Radiation electrodes, one of which is a radiation electrode Generated resonance frequency. Another connected to a feed line Electrode is on an opposite surface of the substrate. A there is another electrode connected to a ground potential on the back of the substrate. The two radiation electrodes are connected to the ground potential and each have an open end. The open ends of the radiation electrodes and the Electrode connected to the lead are electromagnetic through a gap between a radiation electrode and the electrode connected to the feed capacitively coupled. A wide range can be achieved through the antenna, in the signals of two different frequencies without reducing the Gain and without increasing the antenna configuration received and can be sent. Furthermore, a telecommunications device with a such antenna disclosed.
  • 3b and 5b each show a dielectric resonator antenna with a Microstrip line as supply line.
  • the resonator antenna shown in FIG. 3b stands out with a right-angled notch on the underside.
  • Fig. 5b resonator antenna shown from a dielectric block with several layered Segments on the underside, which is a material with a much higher Have dielectric constant.
  • the object of the invention is to provide a dielectric resonator antenna to create better coupling to a supply line.
  • a metal layer for forming the provided electrically conductive layer in the plane of symmetry and the electrical contact are suitable due to their good manufacturing properties and electrical conductivity good for realizing the connection with a supply line.
  • a metal layer is on a plane of symmetry adjacent side of the DRA for connection to the electrical contact in the Plane of symmetry provided.
  • a cuboid antenna with the plane of symmetry as Base of the electrical contact can be attached to an adjacent end face.
  • the metal layer is carried over the edge to the base, so that in a plane of symmetry is created on the plane of symmetry, which is used for surface mounting can be.
  • This soldering point is of course isolated from the electrically conductive layer, which is preferably done by leaving out a small area when metallizing the plane of symmetry happens.
  • a silver paste is advantageously used to form the metal layer provided by burning into the material of the DRA.
  • the material for the dielectric resonator antenna is a ceramic made of (Ba, Nd, Gd) TiO3 is provided. This ceramic material shows everyone important properties for the dielectric resonator antenna such as high dielectric constant, low dielectric losses and a low dielectric temperature coefficient on.
  • the object of the invention is achieved by a transmitter and a receiver as well as a mobile radio device in which at least in the plane of symmetry of the antenna an electrical contact which is insulated from the electrically conductive layer is provided, and the electrical layer and the electrical contact for connecting the dielectric Resonator antenna with at least one feed line for one to be transmitted or received Signal are provided.
  • FIG. 3 shows a dielectric resonator antenna (DRA) 4 with a metallic layer 5 in a plane of symmetry. Furthermore, the ceramic cuboid of the DRA 4 has a second metallization 6 on one end face. The second metallization 6 has a soldering point 7, which is electrically insulated from the metal layer 5 in the plane of symmetry. The solder point 7 forms the additional electrical contact in the plane of symmetry.
  • the plane of symmetry in which the tangential component of the electric field of the desired eigenmode (lowest resonance in TE z 111 mode) disappears is provided with a metallization firmly connected to the dielectric. This is preferably done with a silver paste that is burned into the ceramic.
  • the second metallization 6 on the end face is applied in the same way.
  • These metallizations 5, 6, 7 allow surface mounting (surface mount device, SMD), that is, the flat soldering of electronic components on a printed circuit board (printed circuit board PCB) by means of a wave solder bath or a reflow process.
  • FIG. 4 shows a DRA 4 provided with metallizations 5 and 6 Surface mounting technology on a circuit board 8 with a coplanar strip line 9, 10, 11 was soldered.
  • the metallization 6 on the end face is on after assembly Soldering point 7, which can no longer be seen, is electrically connected to a lead 9.
  • the Metallization of the plane of symmetry 5 is at two solder points with the ones lying on ground Surfaces 10 and 11 of the coplanar line 9, 10 11 connected.
  • One so assembled Antenna 4 has a good coupling with the feed line 9, 10, 11 with a very good one Impedance adjustment to (return loss of -35dB), which makes it very efficient is achieved.
  • the good values for the impedance matching are insensitive to Variations in the exact shape and size of the metallizations and the position of the Antenna on the board 8.
  • the antenna 4 is firmly soldered to the conductor tracks 9, 10, 11 of the feed board 8.
  • the soldering is done flat on the surface of the board, i.e. in the SMD technology known as manufacturing technology in the electronics industry.
  • the assembly of the antenna 4 can thus be combined with other components.
  • a DRA 4 mounted in this way has a very good impedance matching to the feed line 9, 10, 11, which is insensitive to inaccuracies in the positioning of the DRA 4.
  • the described DRA 4 can preferably be realized by a cuboid measuring 15x5x6mm 3 made of (Ba, Nd, Gd) TiO 3 ceramic.
  • the metallizations 5 and 6 are produced by means of a silver paste, which is baked at a temperature of 700 ° C, so that a closed, highly conductive metallic layer is formed.
  • the microstrip line 9, 10, 11 can be implemented on a standard circuit board substrate 8 with a characteristic impedance of 50 ⁇ .
  • the working frequency of such a DRA 4 is 2.1 GHz, so that it is particularly suitable for applications in the mobile radio sector.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
EP99202591A 1998-08-17 1999-08-09 Dielektrische Resonatorantenne Expired - Lifetime EP0982799B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19837266A DE19837266A1 (de) 1998-08-17 1998-08-17 Dielektrische Resonatorantenne
DE19837266 1998-08-17

Publications (3)

Publication Number Publication Date
EP0982799A2 EP0982799A2 (de) 2000-03-01
EP0982799A3 EP0982799A3 (de) 2001-05-02
EP0982799B1 true EP0982799B1 (de) 2004-05-26

Family

ID=7877799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99202591A Expired - Lifetime EP0982799B1 (de) 1998-08-17 1999-08-09 Dielektrische Resonatorantenne

Country Status (6)

Country Link
US (1) US6323824B1 (ko)
EP (1) EP0982799B1 (ko)
JP (1) JP2000232317A (ko)
KR (1) KR20000017328A (ko)
DE (2) DE19837266A1 (ko)
TW (1) TW431029B (ko)

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CN102738579A (zh) * 2012-07-12 2012-10-17 Tdk大连电子有限公司 一种小型陶瓷天线
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US11283189B2 (en) 2017-05-02 2022-03-22 Rogers Corporation Connected dielectric resonator antenna array and method of making the same
US11876295B2 (en) 2017-05-02 2024-01-16 Rogers Corporation Electromagnetic reflector for use in a dielectric resonator antenna system
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US10910722B2 (en) 2018-01-15 2021-02-02 Rogers Corporation Dielectric resonator antenna having first and second dielectric portions
US10892544B2 (en) 2018-01-15 2021-01-12 Rogers Corporation Dielectric resonator antenna having first and second dielectric portions
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US11552390B2 (en) 2018-09-11 2023-01-10 Rogers Corporation Dielectric resonator antenna system
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US11031697B2 (en) 2018-11-29 2021-06-08 Rogers Corporation Electromagnetic device
JP2022510892A (ja) 2018-12-04 2022-01-28 ロジャーズ コーポレーション 誘電体電磁構造およびその製造方法
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Also Published As

Publication number Publication date
EP0982799A2 (de) 2000-03-01
JP2000232317A (ja) 2000-08-22
DE59909570D1 (de) 2004-07-01
TW431029B (en) 2001-04-21
US6323824B1 (en) 2001-11-27
DE19837266A1 (de) 2000-02-24
EP0982799A3 (de) 2001-05-02
KR20000017328A (ko) 2000-03-25

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