EP0982799A2 - Dielektrische Resonatorantenne - Google Patents
Dielektrische Resonatorantenne Download PDFInfo
- Publication number
- EP0982799A2 EP0982799A2 EP99202591A EP99202591A EP0982799A2 EP 0982799 A2 EP0982799 A2 EP 0982799A2 EP 99202591 A EP99202591 A EP 99202591A EP 99202591 A EP99202591 A EP 99202591A EP 0982799 A2 EP0982799 A2 EP 0982799A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- dielectric resonator
- resonator antenna
- plane
- symmetry
- dra
- 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
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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 as well as 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, it 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 operating 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 Millimeter-wave Computer-aided Engineering, Vol. 4, No. 3, 1994, pages 230-247, which provides an overview of the modes and the radiation characteristics for different shapes, such as cylindrical, spherical and right-angled DRAs, and shows the possible modes and symmetry levels for different shapes (see FIGS. 4, 5, 6 and page 240) , left column, lines 1-21)
- a cuboid dielectric resonator antenna is described in particular in Figure 9.
- a microwave line for example a microstrip line or the end of a coaxial line.
- the object of the invention is to provide a dielectric resonator antenna to create better coupling to a supply line.
- the object is achieved in that at least one in the plane of symmetry electrically conductive layer insulated, electrical contact is provided, and that the electrical layer and the electrical contact for connecting the dielectric resonator antenna me at least one supply line for one to be sent or received Signal are provided.
- An antenna according to the invention can with other components on a circuit board (PCB) in the known SMD technology (Soldering on the surface of the board).
- This SMD-capable DRA can firmly soldered to the leads on the board, making a much better Coupling is achieved than when introducing into the stray field of a supply line.
- the impedance matching depends much less on the exact positioning of the antenna the board than when coupling into a stray field, in which the adaptation is very different Distance of the antenna depends on the 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 to 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 by omitting 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.
- a ceramic made of (Ba, Nd, Gd) TiO 3 is provided as the material for the dielectric resonator antenna.
- This ceramic material has all the important properties for the dielectric resonator antenna, such as high dielectric constant, low dielectric losses and a low dielectric temperature coefficient.
- the object of the invention 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 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.
Abstract
Description
- Figur 1:
- eine dielektrische Resonatorantenne,
- Figur 2:
- eine halbierte dielektrische Resonatorantenne mit einer elektrisch leitenden Schicht in einer Symmetrieebene,
- Figur 3:
- eine dielektrische Resonatorantenne mit elektrischen Kontakten gemäß der Erfindung für eine Oberflächenmontage und
- Figur 4:
- eine auf eine Platine montierte Antenne gemäß der Erfindung.
Claims (11)
- Dielektrische Resonatorantenne (DRA) (4) mit einer elektrisch leitenden Schicht (5) in einer Symmetrieebene (2),
dadurch gekennzeichnet,daß in der Symmetrieebene (2) wenigstens ein, von der elektrisch leitenden Schicht (5) isolierter, elektrischer Kontakt (7) vorgesehen ist unddaß die elektrische Schicht (5) und der elektrische Kontakt (7) zur Verbindung der dielektrischen Resonatorantenne (4) mit wenigstens einer Zuleitung (9, 10, 11) für ein zu sendendes oder zu empfangenes Signal vorgesehen sind. - Dielektrische Resonatorantenne (DRA) (4) nach Anspruch 1,
dadurch gekennzeichnet,daß jeweils eine Metallschicht zur Bildung der elektrisch leitenden Schicht (5) in der Symmetrieebene (2) und des elektrischen Kontaktes (7) vorgesehen ist. - Dielektrische Resonatorantenne (DRA) (4) nach Anspruch 1,
dadurch gekennzeichnet,daß eine Metallschicht (6) auf einer an die Symmetrieebene (2) angrenzenden Seite der DRA (4) zur Verbindung mit dem elektrischen Kontakt (7) in der Symmetrieebene (2) vorgesehen ist. - Dielektrische Resonatorantenne (DRA) (4) nach Anspruch 2,
dadurch gekennzeichnet,daß eine Silberpaste zur Bildung der Metallschicht (5, 7) durch Einbrennen in das Material der DRA (4) vorgesehen ist. - Dielektrische Resonatorantenne (DRA) (4) nach Anspruch 1,
dadurch gekennzeichnet,daß als Material für die dielektrische Resonatorantenne (4) eine Keramik aus (Ba, Nd, Gd)TiO3 vorgesehen ist. - Dielektrische Resonatorantenne (DRA) (4) nach Anspruch 1,
dadurch gekennzeichnet,daß die elektrische Schicht (5) und der elektrische Kontakt (7) zur Verbindung der dielektrischen Resonatorantenne (4) mit wenigstens einer koplanaren Streifenleitung (9, 10, 11) vorgesehen sind. - Dielektrische Resonatorantenne (DRA) (4) nach Anspruch 1,
dadurch gekennzeichnet,daß die dielektrische Resonatorantenne (4) die geometrische Form eines rechtwinkligen Quaders mit zwei Stirnseiten, zwei Seitenflächen, Grundfläche und Deckfläche besitzt. - Dielektrische Resonatorantenne (DRA) (4) nach Anspruch 7,
dadurch gekennzeichnet,daß die Symmetrieebene (2) zur Bildung der Grundfläche vorgesehen ist und der elektrische Kontakt (7) auf einer Stirnseite aufgebracht ist. - Sender mit einer dielektrischen Resonatorantenne (DRA) (4) mit einer elektrisch leitenden Schicht (5) in einer Symmetrieebene (2),
dadurch gekennzeichnet,daß in der Symmetrieebene (2) wenigstens ein, von der elektrisch leitenden Schicht (5) isolierter, elektrischer Kontakt (7) vorgesehen ist unddaß die elektrische Schicht (5) und der elektrische Kontakt (7) zur Verbindung der dielektrischen Resonatorantenne (4) mit wenigstens einer Zuleitung (9, 10, 11) für ein zu sendendes Signal vorgesehen sind. - Empfänger mit einer dielektrischen Resonatorantenne (DRA) (4) mit einer elektrisch leitenden Schicht (5) in einer Symmetrieebene (2),
dadurch gekennzeichnet,daß in der Symmetrieebene (2) wenigstens ein, von der elektrisch leitenden Schicht (5) isolierter, elektrischer Kontakt (7) vorgesehen ist unddaß die elektrische Schicht (5) und der elektrische Kontakt (7) zur Verbindung der dielektrischen Resonatorantenne (4) mit wenigstens einer Leitung (9, 10, 11) für ein zu empfangenes Signal vorgesehen sind. - Mobilfunkgerät mit einer dielektrischen Resonatorantenne (DRA) (4) mit einer elektrisch leitenden Schicht (5) in einer Symmetrieebene (2),
dadurch gekennzeichnet,daß in der Symmetrieebene (2) wenigstens ein, von der elektrisch leitenden Schicht (5) isolierter, elektrischer Kontakt (7) vorgesehen ist unddaß die elektrische Schicht (5) und der elektrische Kontakt (7) zur Verbindung der dielektrischen Resonatorantenne (4) mit wenigstens einer Zuleitung (9, 10, 11) für ein zu sendendes oder zu empfangenes Signal vorgesehen sind.
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 true EP0982799A2 (de) | 2000-03-01 |
EP0982799A3 EP0982799A3 (de) | 2001-05-02 |
EP0982799B1 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 (de) |
EP (1) | EP0982799B1 (de) |
JP (1) | JP2000232317A (de) |
KR (1) | KR20000017328A (de) |
DE (2) | DE19837266A1 (de) |
TW (1) | TW431029B (de) |
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EP1014489A2 (de) * | 1998-12-18 | 2000-06-28 | Philips Patentverwaltung GmbH | Dielektrische Resonatorantenne |
EP1018780A1 (de) * | 1998-12-18 | 2000-07-12 | Philips Patentverwaltung GmbH | Dielektrische Resonatorantenne |
WO2004017461A1 (en) * | 2002-08-14 | 2004-02-26 | Antenova Limited | An electrically small dielectric antenna with wide bandwidth |
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-
1998
- 1998-08-17 DE DE19837266A patent/DE19837266A1/de not_active Withdrawn
-
1999
- 1999-07-02 TW TW088111278A patent/TW431029B/zh not_active IP Right Cessation
- 1999-08-06 US US09/369,540 patent/US6323824B1/en not_active Expired - Lifetime
- 1999-08-09 DE DE59909570T patent/DE59909570D1/de not_active Expired - Fee Related
- 1999-08-09 EP EP99202591A patent/EP0982799B1/de not_active Expired - Lifetime
- 1999-08-16 JP JP11230028A patent/JP2000232317A/ja active Pending
- 1999-08-16 KR KR1019990033642A patent/KR20000017328A/ko not_active Application Discontinuation
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Cited By (14)
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EP1014489A2 (de) * | 1998-12-18 | 2000-06-28 | Philips Patentverwaltung GmbH | Dielektrische Resonatorantenne |
EP1018780A1 (de) * | 1998-12-18 | 2000-07-12 | Philips Patentverwaltung GmbH | Dielektrische Resonatorantenne |
US6323808B1 (en) | 1998-12-18 | 2001-11-27 | U.S. Philips Corporation | Dielectric resonator antenna |
EP1014489A3 (de) * | 1998-12-18 | 2002-01-16 | Philips Patentverwaltung GmbH | Dielektrische Resonatorantenne |
US7183975B2 (en) | 2002-05-15 | 2007-02-27 | Antenova Ltd. | Attaching antenna structures to electrical feed structures |
US7161535B2 (en) | 2002-08-14 | 2007-01-09 | Antenova Ltd. | Electrically small dielectric antenna with wide bandwidth |
WO2004017461A1 (en) * | 2002-08-14 | 2004-02-26 | Antenova Limited | An electrically small dielectric antenna with wide bandwidth |
CN100418267C (zh) * | 2002-08-14 | 2008-09-10 | 安蒂诺瓦有限公司 | 一种具有较宽带宽的小型电结构的电介质天线 |
WO2004075343A1 (ja) * | 2003-02-18 | 2004-09-02 | Tadahiro Ohmi | 携帯端末用アンテナおよびそれを用いた携帯端末 |
US7995001B2 (en) | 2003-02-18 | 2011-08-09 | Tadahiro Ohmi | Antenna for portable terminal and portable terminal using same |
CN102723596A (zh) * | 2012-07-12 | 2012-10-10 | Tdk大连电子有限公司 | 一种超薄小型陶瓷天线 |
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 |
CN112928478A (zh) * | 2021-01-25 | 2021-06-08 | 电子科技大学 | 一种基于高次模叠加的宽波束阶梯型介质谐振器天线 |
CN112928478B (zh) * | 2021-01-25 | 2022-07-29 | 电子科技大学 | 一种基于高次模叠加的宽波束阶梯型介质谐振器天线 |
Also Published As
Publication number | Publication date |
---|---|
DE59909570D1 (de) | 2004-07-01 |
KR20000017328A (ko) | 2000-03-25 |
EP0982799B1 (de) | 2004-05-26 |
DE19837266A1 (de) | 2000-02-24 |
EP0982799A3 (de) | 2001-05-02 |
US6323824B1 (en) | 2001-11-27 |
JP2000232317A (ja) | 2000-08-22 |
TW431029B (en) | 2001-04-21 |
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