WO1998038694A1 - Resonanzantenne - Google Patents
Resonanzantenne Download PDFInfo
- Publication number
- WO1998038694A1 WO1998038694A1 PCT/EP1998/001040 EP9801040W WO9838694A1 WO 1998038694 A1 WO1998038694 A1 WO 1998038694A1 EP 9801040 W EP9801040 W EP 9801040W WO 9838694 A1 WO9838694 A1 WO 9838694A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conductor section
- resonator
- conductor
- antenna
- antenna according
- Prior art date
Links
- 239000004020 conductor Substances 0.000 claims abstract description 103
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 239000003989 dielectric material Substances 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 abstract description 3
- 239000013307 optical fiber Substances 0.000 abstract 2
- 230000005855 radiation Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000011888 foil Substances 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/40—Radiating elements coated with or embedded in protective material
-
- 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
-
- 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
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
Definitions
- the invention relates to an antenna for receiving and transmitting electromagnetic microwaves of wavelength ⁇ , consisting of a substrate layer made of low-dielectric material, which has a conductive ground plane on one side and the opposite side of which is structured in the form of microstrip lines.
- the area of application of the invention extends primarily to the sector of mobile radio and handheld technology. Inside of the spectral ranges between 890 MHz and 960 MHz or 1710 MHz and 1890 MHz, by integrating the component m according to the invention into the corresponding terminal and handheld technology .
- Known antenna solutions for the field of mobile radio applications are based on linear antenna designs in the form of monopole arrangements in a shortened or unabridged design. These linear antennas are known both as externally mountable on-board antennas and as components that are directly coupled to the terminal device, and they have different directional factors and efficiency, these components in the azimuthal plane being exclusively r-stranien ⁇ .
- Known flat antenna solutions are based on Dipole-like configurations arranged flat-like, the directional diagram of which shows irregular and m connection with the respective antenna carrier or antenna body the characteristics of a significant radiation field deformation. The radiation properties related to the area of application are clearly inferior to those of the classic linear antennas. Likewise, targeted masking properties of the radiation diagram cannot be demonstrated. Furthermore, no solutions are known whose electromagnetic or radiation properties are achieved on the basis of asymmetrical and open waveguide technology, in particular microstrip technology, using film conductors or film-like guide surfaces.
- the azimuthal omnidirectional antenna configuration shown in the patent specification DE 41 13 277 is based exclusively on a film as a mechanical structure support, the named antenna component being afflicted with a head capacity arranged outside the terminal equipment container.
- the az-mutually omnidirectional antenna configuration shown in patent DE 41 21 333 is based on an electrically non-conductive film as a mechanical structure support, the main radiation direction with respect to the elevation values being an inclination of approx. (Minus) -30 ° (angular degree), that means has a negative elevation angle.
- a disadvantage of the known antenna configurations is that they are either omnidirectional in the azimuthal plane or only radiate within the negative elevation range.
- the antenna according to the invention which can also be referred to as a foil radiator, is a modified ⁇ / 4 radiator which is short-circuited to ground on one side.
- the elongated conductor section which serves as a resonator, is made shorter than ⁇ ⁇ / 4.
- the resonator becomes inductive and the vibration insulation is not complied with.
- an end capacitance is generated at the end of the resonator opposite the short-circuited side.
- This end capacitance is generated by at least one additional additional conductor section which connects at one end to the end of the resonator opposite the short-circuited side and the other end forms an open circuit.
- the length of the additional further conductor sections determine the vibration condition and thus the resulting resonance frequency of the entire structure.
- Various embodiments of the conductor sections at the end of the resonator are conceivable for realizing a defined end capacity for receiving the vibration condition.
- the final capacity can be realized by one or more lines of appropriate length, which do not necessarily have to run parallel to one another or to the resonator. All lines can also be made in any curved shape and not just in a straight shape.
- the cover of the antenna or the foil radiator by an additional dielectric layer can be largely insensitive to other dielectrics located near the stranger. This is important so that the installation of the film radiator m fun devices (dielectric influence) as well as the influence that results from holding the radio in hand, the functionality remains and the radiator is not detuned.
- This antenna e.g. Good impedance bandwidth, efficiency and gain depend on the size of the mechanical shortening (reduction) achieved, the width of the resonator, the distance between the resonator and the end capacitance sections, the effective permittivity constant, the substrate thickness and the dielectric loss angle.
- an essential feature of the invention is that the resonators implemented in microstrip technology for receiving the microwaves are shorter than ⁇ ⁇ / 4, which means that a particularly compact and small design can be achieved.
- the fact that the resonator length is chosen to be shorter than ⁇ ⁇ / 4 means that, as already explained, the vibration condition is no longer greater Fulfills.
- the required end capacities are realized by further line sections.
- An increase in the frequency bandwidth can be achieved by additional radiator elements by electromagnetic coupling. This is done by means of further additional microstrip lines which are arranged at certain distances from the resonator and its end capacitors.
- resonators On a substrate with two or more resonators, the resonators being able to be spatially nested and matched to the required frequency bands.
- the individual antennas do not have to be arranged on one level, but can also be arranged in layers one above the other. It is also possible that several antenna arrangements are provided per layer, so that more than two different frequency bands can be operated. This makes it possible for a mobile radio telephone to be able to communicate with different mobile radio networks.
- Figure 1 Invention antenna with one with the
- Resonator connected to the ground plane and two conductor sections which represent the end capacitors and which adjoin the resonator on both sides;
- Figure 3 Antenna acc. 1 with only one conductor section forming the final capacitance
- Figure 4 Antenna acc. FIG. 1, in which the conductor cuts are arranged on one side of the resonator;
- FIG. N antenna, the end capacitance conductor sections of which are not straight, but rather rectangular in shape;
- FIGS. 8 to 10 Antenna according to the invention in accordance with FIG. 2, in which a plurality of resonators nested in one another are provided in order to enlarge the frequency bandwidth;
- FIG. 12 Two antennas according to the invention arranged on a substrate for receiving two frequency bands, each with additional coupling for increasing the respective frequency bandwidth;
- Figure 13 Top view of a layer antenna for
- Figure 14 Cross-sectional view of an antenna acc.
- FIG. 1 shows an antenna according to the invention with a film-like, low-dielectric carrier 10, which is coated on one side with a conductive structure S, consisting of conductor sections 2, 3 and 4 of different lengths that run parallel to one another and rectilinearly, the conductor section 3 being conductive and one-sided is connected to a ground plane 8, which in turn, as shown in FIG. 2, is connected to the ground plane 1 via a conductive coating of the cross-sectional area of the carrier substrate 10.
- the ground plane 8 can be connected to the ground plane 1 m by means of one or more contact pins which pass through the dielectric substrate layer 10.
- the conductor sections 2, 3 and 4 are each arranged separately from one another by a gap 5, 6 of a defined gap width, the conductor sections 2, 3 and 4 being conductively connected to one another by a strip-shaped conductor section 7 of a defined section length and width running in the transverse direction, the conductor section running in the transverse direction being arranged on the conductor section end of the antenna opposite the ground contact 8.
- the conductor section 3 which is connected to the ground plane 8 at one end of the conductor section and to the transverse strip-shaped conductor section 7 at the opposite end of the conductor section, is coupled to a signal waveguide at the location 9 by the inner conductor 13 of a coaxial waveguide being connected by an aperture 15 which is shown in FIG the rear ground plane 1 is arranged, guided centrally and coupled to the conductor section 3 at location 9 on the longitudinal symmetry line of the conductor section, and the outer conductor of the coaxial waveguide is conductively connected to the rear ground plane 1 at the aperture boundary 15.
- the vibration condition of the open and asymmetrical waveguide structure in the form of microstrip technology is determined by the geometric length and width of the conductor sections 2, 3 and 4.
- the input impedance of the microstrip anoronation is determined via the location of the coupling 9 along the symmetry of the conductor section 3, which in turn depends on the resulting length of the conductor sections 2 and 4, the signal embedding or decoupling at the location 9 via a circular coaxial aperture or a slit or rectangular aperture.
- the detuning of the emitter due to dielectric environmental influences is compensated for over the length of the conductor sections 2 and / or 4, the degree of detuning of the emitter due to dielectric environmental influences being additionally influenced or minimized by the application of a dielectric layer 11 of a defined dielectric number and a defined geometry.
- the dielectric carrier layer 10 is in particular a polystyrene film with a layer thickness of 1 mm, which is provided on one side and over the entire area with a copper or aluminum foil with a layer thickness between 0.01 mm and 0.5 mm, which forms the ground plane.
- the dielectric layer 11 also has a layer thickness of approximately 1 mm.
- the antenna has a length L of 119 mm ⁇ and a width B A of 40 mm.
- the length L 8 of the ground plane 8 is 20 mm.
- the distance L B from the ground surface 8 to the feed point of the antenna 9 is also ⁇ if 20 mm.
- the diameter of the aperture 15 is 4.1 mm.
- the length of the conductor capacity forming the final capacity K: and K measure 82.6 mm and 56.7 mm.
- the length L R of the conductor section 3 or R forming the resonator is 85.7 mm.
- the width of the conductor section 2 is 11.5 mm and the width of the conductor section 4 is 9.5 mm.
- the width of the resonator conductor section is 12 mm.
- FIG. 3 shows a radiator according to the invention, in which only a conductor section K arranged parallel to the resonator conductor section 3 or R forms the end capacitance.
- FIG. 4 shows a radiator according to the invention, in which the end capacitance is formed by two conductor sections Ki and K 2 arranged in parallel, which are arranged on one side of the resonator conductor section R.
- an antenna can be configured in which the resulting end capacitance is realized by three or four conductor sections Ki to K.
- FIG. 7 shows a further embodiment of the antenna according to the invention, in which the conductor sections 16 and 17 forming the end capacitance are not rectilinear but have a rectangular shape.
- FIGS. 8 to 10 show antennas in which the frequency bandwidth of the antenna is set or increased by electromagnetic coupling with additional conductor elements which are arranged on the same dielectric carrier substrate.
- the basic structure of the antenna according to FIG. 8 corresponds to the antenna according to FIG. 3, with additionally a U-shaped conductor section 19, 20, 21 with its one leg 21 reaching into the gap between the resonator conductor section 3 and the conductor section 2 forming the final capacitance.
- the other leg 19 is connected to an additional ground surface 18, which in turn is connected to the ground plane I in accordance with the ground surface 9.
- the figure 9 corresponds in its basic ⁇ construction of Figure 1, now two additional U- Forma ⁇ e Leiteraoschnitte 23 to 28 are provided, each with one leg 27, 28 m engage the gap formed by the conductor sections 2, R, 4.
- FIGS. 9 and 10 show further possible configurations of the antenna according to the invention, the arrangement of the additional conductor sections 30 to 38 influencing the coupling for increasing the frequency bandwidths being in principle arbitrary. It is also conceivable that the conductor sections interlock in a spiral manner, so that a long parallel guidance of conductor sections is produced in a relatively small space.
- FIGS. 11 to 14 show antennas in which two antenna signals can be coupled in or out, as a result of which two frequency bands can be received or operated simultaneously using only one film antenna. Due to the different design of the resonator conductor sections R 3 and R b , the resonance conditions connection with the conductor sections 41a, b and 42a, b and the locations 43a, 43b of the coupling-out of the electromagnetic waves are determined. Due to the nesting of the two radiator arrangements, they can be arranged in a very small space.
- FIG. 12 shows a further embodiment of an antenna with two connections 51a, 51b for dielectric waveguides, with only the radiator arrangement shown in FIG. 8, each having different dimensions, being arranged next to one another on a substrate carrier.
- FIGS. 13 and 14 show a multi-layer antenna in which the antennas according to the invention are arranged in a sandwich-like manner above a plurality of layers, one antenna in each case corresponding to the oscillation conditions for the frequencies of a specific mobile radio network. Due to the different resonance frequencies, the excessive radiation structures arranged only insignificantly. In contrast to the arrangement according to FIG. 2, less space is required when the radiator structures are layered on top of one another, as a result of which the antenna according to FIG. 13 can be made more compact and thus the housing of a mobile radio telephone surrounding it can be made relatively small.
- FIG. 14 shows the antenna according to FIG. 13 in cross section.
- the conductive coating 12a, b of the cross-sectional area of the Tragersubstrate 10a and 10b is connected to the patterned layers S A and S B m-conductive connection.
- Such a conductive cross-sectional coating can also be provided on the opposite side after execution of the antenna.
- Waveform 18, 22, 29, 40b, 7 additional ground area; with the ground plane
Landscapes
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Burglar Alarm Systems (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59805415T DE59805415D1 (de) | 1997-02-25 | 1998-02-24 | Resonanzantenne |
AU67243/98A AU6724398A (en) | 1997-02-25 | 1998-02-24 | Resonant antenna |
US09/380,131 US6304219B1 (en) | 1997-02-25 | 1998-02-24 | Resonant antenna |
JP53729098A JP2001513283A (ja) | 1997-02-25 | 1998-02-24 | 共振アンテナ |
DE19880222T DE19880222D2 (de) | 1997-02-25 | 1998-02-24 | Resonanzantenne |
IL13155898A IL131558A0 (en) | 1997-02-25 | 1998-02-24 | Resonant antenna |
CA002282611A CA2282611C (en) | 1997-02-25 | 1998-02-24 | Resonant antenna |
EP98912379A EP0965152B1 (de) | 1997-02-25 | 1998-02-24 | Resonanzantenne |
AT98912379T ATE223621T1 (de) | 1997-02-25 | 1998-02-24 | Resonanzantenne |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19707535A DE19707535A1 (de) | 1997-02-25 | 1997-02-25 | Folienstrahler |
DE19707535.5 | 1997-02-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998038694A1 true WO1998038694A1 (de) | 1998-09-03 |
Family
ID=7821434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/001040 WO1998038694A1 (de) | 1997-02-25 | 1998-02-24 | Resonanzantenne |
Country Status (10)
Country | Link |
---|---|
US (1) | US6304219B1 (de) |
EP (1) | EP0965152B1 (de) |
JP (1) | JP2001513283A (de) |
KR (1) | KR20000075673A (de) |
AT (1) | ATE223621T1 (de) |
AU (1) | AU6724398A (de) |
CA (1) | CA2282611C (de) |
DE (3) | DE19707535A1 (de) |
IL (1) | IL131558A0 (de) |
WO (1) | WO1998038694A1 (de) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1128466A2 (de) * | 2000-02-24 | 2001-08-29 | Filtronic LK Oy | Planare Antennenstruktur |
US6346914B1 (en) | 1999-08-25 | 2002-02-12 | Filtronic Lk Oy | Planar antenna structure |
US6380905B1 (en) | 1999-09-10 | 2002-04-30 | Filtronic Lk Oy | Planar antenna structure |
EP1258052A2 (de) * | 2000-02-22 | 2002-11-20 | Telefonaktiebolaget LM Ericsson (publ) | Kleine breitbandige gedruckte antenne mit paräsitärem element |
ES2185463A1 (es) * | 2000-11-10 | 2003-04-16 | Univ Cartagena Politecnica | Antena dual para terminales moviles. |
EP1378021A1 (de) * | 2001-03-23 | 2004-01-07 | Telefonaktiebolaget LM Ericsson (publ) | System mit eingebauter multiband-mehrfachantenne |
EP1439606A1 (de) * | 2001-10-11 | 2004-07-21 | Taiyo Yuden Co., Ltd. | Dielektrische antenne |
US6839040B2 (en) | 1999-12-20 | 2005-01-04 | Siemens Ag | Antenna for a communication terminal |
DE102004016157A1 (de) * | 2004-04-01 | 2005-11-03 | Kathrein-Werke Kg | Antenne nach planarer Bauart |
EP1717902A1 (de) * | 2005-04-20 | 2006-11-02 | Wistron NeWeb Corp. | Planare Monopolantennen |
US7193566B2 (en) | 2005-04-18 | 2007-03-20 | Wistron Neweb Corp | Planar monopole antennas |
EP1959518A2 (de) * | 2001-06-26 | 2008-08-20 | Ethertronics, Inc. | Magnetische Multifrequenz-Dipol-Antenne und Verfahren zur Wiederverwendung des Volumens einer Antenne |
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US6343208B1 (en) | 1998-12-16 | 2002-01-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Printed multi-band patch antenna |
US6408190B1 (en) | 1999-09-01 | 2002-06-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Semi built-in multi-band printed antenna |
JP3658639B2 (ja) * | 2000-04-11 | 2005-06-08 | 株式会社村田製作所 | 表面実装型アンテナおよびそのアンテナを備えた無線機 |
DE10022107A1 (de) * | 2000-05-08 | 2001-11-15 | Alcatel Sa | Integrierte Antenne für Mobilfunktelefone |
JP2003188637A (ja) * | 2001-12-20 | 2003-07-04 | Hitachi Cable Ltd | 平板多重アンテナおよび携帯端末 |
KR20030078448A (ko) * | 2002-03-29 | 2003-10-08 | 현우마이크로 주식회사 | 아이엠티-2000(IMT-2000) 소형 중계기용 광대역 이슬롯(E-shaped SloT) 패치 안테나 |
JP2003347827A (ja) * | 2002-05-28 | 2003-12-05 | Ngk Spark Plug Co Ltd | アンテナ及びそれを備えた無線周波モジュール |
TWI281782B (en) * | 2002-12-25 | 2007-05-21 | Quanta Comp Inc | Portable wireless device |
US6850199B2 (en) * | 2003-06-11 | 2005-02-01 | Auden Techno Corp. | U-shaped multi-frequency antenna of high efficiency |
KR100623683B1 (ko) * | 2003-12-13 | 2006-09-18 | 학교법인 한국정보통신학원 | 다중대역 케이블 안테나 |
KR100675383B1 (ko) | 2004-01-05 | 2007-01-29 | 삼성전자주식회사 | 극소형 초광대역 마이크로스트립 안테나 |
JP2006140589A (ja) * | 2004-11-10 | 2006-06-01 | Casio Hitachi Mobile Communications Co Ltd | アンテナ構造 |
US7439511B2 (en) * | 2007-01-31 | 2008-10-21 | Emcore Corporation | Pulsed terahertz frequency domain spectrometer with single mode-locked laser and dispersive phase modulator |
US7535005B2 (en) * | 2007-01-31 | 2009-05-19 | Emcore Corporation | Pulsed terahertz spectrometer |
US7936453B2 (en) * | 2008-04-04 | 2011-05-03 | Emcore Corporation | Terahertz frequency domain spectrometer with integrated dual laser module |
US9029775B2 (en) | 2008-05-19 | 2015-05-12 | Joseph R. Demers | Terahertz frequency domain spectrometer with phase modulation of source laser beam |
US7781736B2 (en) * | 2008-05-19 | 2010-08-24 | Emcore Corporation | Terahertz frequency domain spectrometer with controllable phase shift |
US8604433B2 (en) | 2008-05-19 | 2013-12-10 | Emcore Corporation | Terahertz frequency domain spectrometer with frequency shifting of source laser beam |
TWI369816B (en) * | 2009-07-24 | 2012-08-01 | Acer Inc | Shorted monopole antenna |
US9400214B1 (en) | 2013-03-15 | 2016-07-26 | Joseph R. Demers | Terahertz frequency domain spectrometer with a single photoconductive element for terahertz signal generation and detection |
US9103715B1 (en) | 2013-03-15 | 2015-08-11 | Joseph R. Demers | Terahertz spectrometer phase modulator control using second harmonic nulling |
EP2806497B1 (de) * | 2013-05-23 | 2015-12-30 | Nxp B.V. | Fahrzeugantenne |
US9404853B1 (en) | 2014-04-25 | 2016-08-02 | Joseph R. Demers | Terahertz spectrometer with phase modulation |
US9086374B1 (en) | 2014-04-25 | 2015-07-21 | Joseph R. Demers | Terahertz spectrometer with phase modulation and method |
US9239264B1 (en) | 2014-09-18 | 2016-01-19 | Joseph R. Demers | Transceiver method and apparatus having phase modulation and common mode phase drift rejection |
US9429473B2 (en) | 2014-10-16 | 2016-08-30 | Joseph R. Demers | Terahertz spectrometer and method for reducing photomixing interference pattern |
US10206649B2 (en) * | 2015-12-29 | 2019-02-19 | Analogic Corporation | Data transfer across a rotating boundary of a computed tomography imaging apparatus |
EP3970233A4 (de) * | 2019-05-17 | 2023-05-31 | Aclara Technologies LLC | Zirkulare polarisierte mehrband-antennenanordnung |
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US5075691A (en) * | 1989-07-24 | 1991-12-24 | Motorola, Inc. | Multi-resonant laminar antenna |
US5663639A (en) * | 1994-01-18 | 1997-09-02 | Massachusetts Institute Of Technology | Apparatus and method for optical heterodyne conversion |
US5666091A (en) * | 1995-03-20 | 1997-09-09 | Hitachi Media Electronics Co., Ltd. | Structure of surface acoustic wave filter |
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DE4113277C2 (de) * | 1991-04-19 | 1996-08-08 | Hagenuk Telecom Gmbh | Antenne für ein mobiles Telefon |
DE4121333A1 (de) * | 1991-06-25 | 1993-01-14 | Hagenuk Telecom Gmbh | Folienantenne |
FR2718292B1 (fr) * | 1994-04-01 | 1996-06-28 | Christian Sabatier | Antenne d'émission et/ou de réception de signaux électromagnétiques, en particulier hyperfréquences, et dispositif utilisant une telle antenne. |
US5748149A (en) * | 1995-10-04 | 1998-05-05 | Murata Manufacturing Co., Ltd. | Surface mounting antenna and antenna apparatus |
JP3114605B2 (ja) * | 1996-02-14 | 2000-12-04 | 株式会社村田製作所 | 表面実装型アンテナおよびこれを用いた通信機 |
US6008762A (en) * | 1997-03-31 | 1999-12-28 | Qualcomm Incorporated | Folded quarter-wave patch antenna |
US6049314A (en) * | 1998-11-17 | 2000-04-11 | Xertex Technologies, Inc. | Wide band antenna having unitary radiator/ground plane |
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1997
- 1997-02-25 DE DE19707535A patent/DE19707535A1/de not_active Withdrawn
-
1998
- 1998-02-24 DE DE59805415T patent/DE59805415D1/de not_active Expired - Lifetime
- 1998-02-24 EP EP98912379A patent/EP0965152B1/de not_active Expired - Lifetime
- 1998-02-24 US US09/380,131 patent/US6304219B1/en not_active Expired - Fee Related
- 1998-02-24 IL IL13155898A patent/IL131558A0/xx unknown
- 1998-02-24 WO PCT/EP1998/001040 patent/WO1998038694A1/de not_active Application Discontinuation
- 1998-02-24 DE DE19880222T patent/DE19880222D2/de not_active Expired - Fee Related
- 1998-02-24 JP JP53729098A patent/JP2001513283A/ja active Pending
- 1998-02-24 AU AU67243/98A patent/AU6724398A/en not_active Abandoned
- 1998-02-24 AT AT98912379T patent/ATE223621T1/de not_active IP Right Cessation
- 1998-02-24 CA CA002282611A patent/CA2282611C/en not_active Expired - Fee Related
- 1998-02-24 KR KR1019997007739A patent/KR20000075673A/ko not_active Application Discontinuation
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US5075691A (en) * | 1989-07-24 | 1991-12-24 | Motorola, Inc. | Multi-resonant laminar antenna |
US5663639A (en) * | 1994-01-18 | 1997-09-02 | Massachusetts Institute Of Technology | Apparatus and method for optical heterodyne conversion |
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
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US6346914B1 (en) | 1999-08-25 | 2002-02-12 | Filtronic Lk Oy | Planar antenna structure |
US6380905B1 (en) | 1999-09-10 | 2002-04-30 | Filtronic Lk Oy | Planar antenna structure |
US6839040B2 (en) | 1999-12-20 | 2005-01-04 | Siemens Ag | Antenna for a communication terminal |
EP1250723B1 (de) * | 1999-12-20 | 2005-03-30 | Siemens Aktiengesellschaft | Antenne für ein kommunikationsendgerät |
EP1258052A2 (de) * | 2000-02-22 | 2002-11-20 | Telefonaktiebolaget LM Ericsson (publ) | Kleine breitbandige gedruckte antenne mit paräsitärem element |
EP1128466A2 (de) * | 2000-02-24 | 2001-08-29 | Filtronic LK Oy | Planare Antennenstruktur |
EP1128466A3 (de) * | 2000-02-24 | 2003-09-17 | Filtronic LK Oy | Planare Antennenstruktur |
US6922171B2 (en) | 2000-02-24 | 2005-07-26 | Filtronic Lk Oy | Planar antenna structure |
ES2185463A1 (es) * | 2000-11-10 | 2003-04-16 | Univ Cartagena Politecnica | Antena dual para terminales moviles. |
EP1378021A1 (de) * | 2001-03-23 | 2004-01-07 | Telefonaktiebolaget LM Ericsson (publ) | System mit eingebauter multiband-mehrfachantenne |
EP1959518A2 (de) * | 2001-06-26 | 2008-08-20 | Ethertronics, Inc. | Magnetische Multifrequenz-Dipol-Antenne und Verfahren zur Wiederverwendung des Volumens einer Antenne |
EP1439606A1 (de) * | 2001-10-11 | 2004-07-21 | Taiyo Yuden Co., Ltd. | Dielektrische antenne |
EP1439606A4 (de) * | 2001-10-11 | 2005-07-06 | Taiyo Yuden Kk | Dielektrische antenne |
DE102004016157A1 (de) * | 2004-04-01 | 2005-11-03 | Kathrein-Werke Kg | Antenne nach planarer Bauart |
US7193566B2 (en) | 2005-04-18 | 2007-03-20 | Wistron Neweb Corp | Planar monopole antennas |
EP1717902A1 (de) * | 2005-04-20 | 2006-11-02 | Wistron NeWeb Corp. | Planare Monopolantennen |
Also Published As
Publication number | Publication date |
---|---|
JP2001513283A (ja) | 2001-08-28 |
IL131558A0 (en) | 2001-01-28 |
EP0965152B1 (de) | 2002-09-04 |
AU6724398A (en) | 1998-09-18 |
CA2282611A1 (en) | 1998-09-03 |
CA2282611C (en) | 2005-11-15 |
DE19880222D2 (de) | 2000-06-15 |
EP0965152A1 (de) | 1999-12-22 |
DE59805415D1 (de) | 2002-10-10 |
US6304219B1 (en) | 2001-10-16 |
KR20000075673A (ko) | 2000-12-26 |
ATE223621T1 (de) | 2002-09-15 |
DE19707535A1 (de) | 1998-08-27 |
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