EP1241733A1 - PIFA-Antenne mit Schlitzen - Google Patents

PIFA-Antenne mit Schlitzen Download PDF

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Publication number
EP1241733A1
EP1241733A1 EP02290493A EP02290493A EP1241733A1 EP 1241733 A1 EP1241733 A1 EP 1241733A1 EP 02290493 A EP02290493 A EP 02290493A EP 02290493 A EP02290493 A EP 02290493A EP 1241733 A1 EP1241733 A1 EP 1241733A1
Authority
EP
European Patent Office
Prior art keywords
antenna
slots
patch
link
short
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
EP02290493A
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English (en)
French (fr)
Other versions
EP1241733B1 (de
Inventor
Marc Edimo
Charles Ngounou Kouam
Christophe Grangeat
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.)
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP1241733A1 publication Critical patent/EP1241733A1/de
Application granted granted Critical
Publication of EP1241733B1 publication Critical patent/EP1241733B1/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
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/106—Microstrip slot 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
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • 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
    • 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
    • H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means

Definitions

  • the invention relates to antennas produced using the patch technique.
  • Such an antenna is typically used in a spectral range including the radio frequencies and microwaves and more specifically in bands GSM, DCS, PCS and UMTS.
  • antennas have a resonant frequency band.
  • transmission when the antennas are excited in this frequency band by a power line, they maintain electromagnetic waves stationary. These standing waves are then coupled to waves electromagnetic radiation in space. In reception, the waves take the same shapes but travel in the opposite direction.
  • Different antennas of this type are known in the state of the art.
  • microstrips on a plane as an antenna for transmit signals.
  • the substrate typically has a flat rectangular shape and constant thickness.
  • a multi-band antenna is also described in document FR-A-2 772 518.
  • This antenna comprises a flat patch placed on the surface top of a dielectric substrate.
  • a layer of mass is placed on the lower surface of the dielectric substrate.
  • This antenna is of the quarter wave type because a short circuit conductor, disposed on a wafer of the dielectric substrate, connects the pellet to the mass layer.
  • This antenna has conductors connection allowing the transmission of signals between the antenna and a device signal processing.
  • This antenna comprises three pellets placed on the upper surface of a substrate in Styrofoam (registered trademark).
  • a mass layer is placed on the surface bottom of the dielectric substrate.
  • a first patch intended for the low band is attached to a second patch intended for the upper band.
  • These two lozenges thus form a first bi-band element having a zigzag shape and comprising a diet.
  • This dual-band element has a short circuit in the form of a junction with the ground layer.
  • a third patch is positioned next to the second patch to obtain a double resonance in the upper band, with a expanded bandwidth.
  • the third patch has a short circuit in the form of junction with mass.
  • Document US-A-4,766,440 describes an antenna having two half-wave resonances.
  • This antenna includes a rectangular patch, in which the resonance paths are established respectively in the width and the length of the patch.
  • a U-shaped slot is made in the patch and does not reach the edges of this patch.
  • the tablet is connected to a device for coupling, provided with means for transforming impedance. This transformation impedance makes it possible to adapt the coupling device to the different frequencies of resonance used.
  • these antennas have drawbacks. On the one hand, they require large flat pads, incompatible with reduced dimensions cases of mobile communication devices. On the other hand, these antennas require the mounting of capacitive loads to widen the bandwidth which increases the cost and complexity of the antenna. In addition, these antennas have a reduced bandwidth, especially in the frequency band dedicated to UMTS.
  • These antennas are more expensive and have a low efficiency transmission or reception. These antennas also do not allow adjustment easily resonant frequencies and bandwidths of these frequencies.
  • the invention thus relates to an antenna comprising a conductive patch having two sinuous slots, a mass, a short-circuit connection, connecting the patch to ground, a supply link connected to the patch, the antenna having a radiation diagram comprising a primary resonance band including frequencies between 1950MHz and 2100MHz and of width greater than 20%.
  • the radiation pattern has a band of secondary resonance including frequencies between 890MHz and 950MHz and wide greater than 10%.
  • the tablet has a shape that is substantially polygonal.
  • the slots open on the same edge of the pellet.
  • the short-circuit link is connected to the patch by the edge on which the slots open or by an adjacent edge.
  • the supply link is connected to the patch by the edge on which the slots open or by an adjacent edge.
  • the supply link and the short-circuit link are arranged on either side of at least one of the slots.
  • a slot has a length contour different from the length of the contour of the other slot.
  • the invention also relates to an antenna in which the difference in length between the contour of the slots is between 5 and 30%.
  • the mass is a conductive surface parallel to the surface of the pellet.
  • the distance between the slots is between 5 and 15mm.
  • the patch is formed from a sheet metallic.
  • the slots have substantially the same shape and the same orientation.
  • the slots have substantially the same shape and a opposite orientation.
  • the invention also relates to a radiocommunication device.
  • a radiocommunication device comprising an antenna according to the invention and having a thickness less than 20mm, a length less than 120mm and a width less than 50mm.
  • the invention provides an antenna in which there are two slots sinuous coupled on a conductive pad.
  • the antenna presents a diagram of radiation with a resonance band of width greater than 20%. This resonance band typically covers several frequency bands of transmission, for example DCS, PCS and UMTS.
  • the following antenna will be described in its operation as a transmitter, in which it transforms an electric current into an electromagnetic field. he It will be clear to those skilled in the art that the operation of the antenna in receiver is similar, an electromagnetic field being transformed into current electric by antenna.
  • the cutoff frequencies are determined at - 6dB on the antenna reflection coefficient measurement curve.
  • We determine the resonant frequency range by subtracting the cutoff frequency lower than the upper cutoff frequency.
  • the percentage width of the frequency band resonance is the ratio of the resonant frequency range to the frequency center of the band, multiplied by 100.
  • FIG. 1 shows a perspective view of an antenna according to a mode for carrying out the invention.
  • the antenna 1 has a conductive patch 2, in which a first slot 3 and a second slot 4 are made.
  • the pastille conductive has a supply link 5 and a short circuit link 6 connected to a ground 7.
  • a substrate 8 is interposed between the patch and the ground 7.
  • the supply link 5 is connected to a device for generating and processing signals 9, which sends a signal in the form of electric current.
  • the patch preferably has a substantially polygonal shape.
  • the tablet shown has a rectangular shape but the invention is of course not limited to this type of shape.
  • the antenna of this embodiment has a frequency band of resonance which will be called secondary thereafter. It also presents a resonance frequency band which will be called primary and which will be detailed later in the description.
  • the secondary resonance band is obtained by coupling of the slots 3 and 4.
  • the slots 3 and 4 open on the same edge 25 of the pellet. As shown in Figure 2, the slots define a middle part 10, a first end or tail 11 and a second end or tail 12 in the tablet. These three parts are connected by an edge 26 of the patch.
  • the pastille 2 is supplied by the supply link 5.
  • the supply link 5 is disposed on the first end 11, on the edge 25 on which the slots 3 and 4.
  • the short-circuit link 6 is arranged on the second end 12, on edge 25.
  • the supply of the patch generates a first electric current starting from the supply link 5, bypassing the slot 3 and returning through the part median 10 towards edge 25. Passing through median part 10, the current electric generates an electromagnetic coupling. This electromagnetic coupling excites slot 4. A second electric current is then generated. This second electric current leaves short-circuit link 6, bypasses slot 4 and returns by the middle part 10 towards the edge 25. The first and second stream electric are therefore added in the middle part 10.
  • Electric currents generate strong electromagnetic radiation at level of zones 21, 22 and 23, shown in phantom in Figure 2.
  • the radiation has two resonant frequencies, defined respectively by the dimensions of slots 3 and 4.
  • the wavelength of the electromagnetic field corresponding to the resonance of each slit is defined by the length of the contour from this slot.
  • These resonances are of the quarter wave type, because the short circuit link 6 between the patch 2 and the ground 7 imposes an electric field node. So, the length of the electrical path is of the order of ⁇ / 4, ⁇ being the wavelength in the air or the vacuum.
  • the conductive pad being short-circuited by means of short-circuit connection 6, the dimensions of the antenna can thus be reduced for a given resonant frequency.
  • the short-circuit link 6 has preferably an impedance low enough to impose this field node electric.
  • the secondary frequency band is thus formed of two resonances strongly coupled, generated respectively by the first and second slots.
  • the resonant frequencies are not superimposed and are close enough to generate an extended resonant frequency band. It is therefore desirable that the slots have a slightly different length contour one of the other. The difference in length of the contours is preferably between 5 and 30%.
  • the resonant frequencies are thus distinct so as not to be superimposed and close enough to widen the resonant frequency band.
  • of the appropriate dimensions of the patch and the contour of the slots allow generating a secondary frequency band including the GSM band and / or the E-GSM band and more particularly the frequencies between 890 and 950 MHz.
  • the band thus formed has a width greater than 10%. In addition, the efficiency in this band is greater than 70%.
  • the speed of propagation of electric currents is close to the speed light.
  • the circulation of currents appears approximately as if the chip was supplied by the supply link 5 and by the short-circuit link 6.
  • the path of electric currents is similar to the path in a structure which would present two isolated pellets but close enough to each other and having each a slot and a feed link.
  • Primary resonant frequency band also uses coupling slots 3 and 4.
  • An electric current is generated and passes through the first end 11 from the supply link to edge 26. This electric current generates a induced current which crosses the middle part from edge 25 to edge 26. This last electric current also generates an induced current which crosses the second end from short-circuit connection to edge 26.
  • Electric currents are concentrated on edge 26 and generate a strong electromagnetic radiation in zone 24 shown in dotted lines in the figure 2.
  • the radiation thus has at least two defined resonance frequencies mainly by the dimensions of the patch.
  • the length of the patch is here the determining parameter of the wavelength of resonance frequencies. These resonances are also of the quarter wave type due to the short circuit connection 6 between the patch 2 and the ground 7.
  • the length of the electrical path is the order of ⁇ / 4.
  • the primary frequency band is thus formed of at least two coupled resonances. These resonances are also influenced by the geometry and the length of the outline of the slots. Resonant frequencies in this band are higher than in the secondary band because the path of the electric current is here lower. The resonant frequencies are not superimposed and are close enough to generate an extended resonant frequency band. he is also desirable for this frequency band that the slots have a contour of slightly different length from each other. Dimensions the patch and the contour of the slots generate a strip primary frequency including UMTS band and PCS band, and more especially the frequencies between 1950 and 2100MHz. The band thus formed has a width greater than 20%. In addition, the efficiency in this band is greater than 70%.
  • the short-circuit link 6 and the supply link 5 are preferably arranged on the same edge of the conductive patch. In this case, the coupling of resonance modes is improved. This gives an enlarged bandwidth.
  • the supply link and the short-circuit link are preferably arranged on edge 25 or on an adjacent edge, as is shown in Figure 3.
  • the short circuit connection is thus preferably placed in zone 27.
  • the supply link is preferably placed in zone 28.
  • the orientation of the outline of the slots can of course be opposite to that shown, with a similar position of the short-circuit link and the link Power.
  • the resonant frequencies as well as the levels of adaptation.
  • links 5 and 6 in locations chosen appropriately.
  • the supply link and / or the short circuit connection on the edges of the patch.
  • the level of adaptation is improved. We then obtains a better antenna and thus a reduced reflection coefficient, more particularly in the primary resonance frequency band.
  • the supply link and the short circuit link are preferably located on either side of one of the slots. By both sides, we mean that line drawn between the supply link and the short-circuit link crosses a slot.
  • these slots preferably have a sinuous shape, moving away from the line segment, in order to present an outline of increased length.
  • a sinuous contour allows to deform the path of the electric current.
  • Figure 4 shows examples of the shape of suitable sinuous slots.
  • the shape of the slots can for example be close to a V, a U, an arc of a circle or a rectangle not closing.
  • the slots have preferably a contour of similar shape.
  • slots of sinuous shapes composed of straight segments. This type of shape facilitates manufacturing because of the simplicity of their contour. Tuning the antenna frequencies is also made easier.
  • FIG. 5 shows a particular form of sinuous slot making it possible to significantly reduce the dimensions of the patch and the antenna.
  • This slot is composed of straight segments wound in a spiral. This type of slot reduces about 20% the dimensions of the antenna compared to a slot antenna in V shape.
  • the relative orientation of the contours of the slots makes it possible to modify the antenna characteristics. So when the slots have contours of same orientation as shown in Figures 1 to 3, the width of the strip of coupling frequency is increased. The same orientation of the contours allows to add the electric current in the middle part 10. This electric current is greater and then generates an increased induced current around the slot 4. On then obtains radiation of increased amplitude and expanded bandwidth. When the contours of the slits have opposite orientations, the radiation emitted has better symmetry at the expense of bandwidth and the amplitude of radiation.
  • the coupling between them is modified.
  • the distance between the slots is preferably greater than 5mm.
  • distance between the slots is meant the distance between two respective points of each slot, the closest.
  • the enlargement of the resonant frequency band is particularly sensitive for the primary resonant frequency.
  • the mass 7 in the form of a metal plate. It is in this case desirable to use a mass 7 formed of a conductive surface flat, parallel to the conductive pad 2. Such a mass makes it possible to limit the radiation power intercepted by the user of the device. In the mode of embodiment shown in Figure 1, the mass 7 and the conductive pad 2 are separated by a substrate 8.
  • the substrate 8 is preferably of constant thickness.
  • a thickness of substrate is preferably chosen which allows the frequencies to be tuned and the bandwidths to be widened. By increasing the thickness of the substrate, the resonant frequency bands can be widened.
  • the thickness of the substrate 8 is limited by the dimensions of the radiocommunication device.
  • a substrate 8 is preferably used, one edge of which is at the same level or recessed with respect to an edge of the conductive patch 2. The mounting of the antenna is thus simplified. To improve the gain, it is also desirable to produce such a substrate with a material whose relative permittivity is close to that of air, preferably less than 2.
  • the substrate 8 in polymethacrylimide foam or a laminate based on fluoro-polymer such as PTFE. Such foam also provides good mechanical strength.
  • the supply link 5 is coupled to a transmitter or a signal processing 9 by a connection line 14.
  • This can be done connection for example using a coaxial cable.
  • the outer conductor of the coaxial cable in this case connects ground 7 to the processing organ.
  • the supply link 5 is formed by a tab extending from the patch and is extending to form the connecting line. It is possible to perform the supply link in the form of a tab made in the conductive patch.
  • a processing member capable of operating at predetermined working frequencies close to the useful resonant frequencies of the antenna, for example working frequencies included in bands passers-by centered on the resonance frequencies.
  • a composite processing which has several elements, each of these elements being permanently tuned to working frequencies.
  • a processing device with a tunable element on the different working frequencies.
  • the input impedance presented by the antenna is equal to the output impedance of the transmitter or signal processing device 9.
  • this impedance is fixed at 50 ohms to obtain losses minimum.
  • connection 6 is preferably formed by a conductive tab extending on a wafer of the substrate 8. In this case it is also possible to carry out the short-circuit connection in the form of a protruding tab from the conductive pad.
  • the conductive pad may also have a tab at the level of the short-circuit part of the patch. There is a tab for this. protruding on an edge of the short-circuit part. This tab is preferably in alignment with the conductive pad. The sagging of this tongue allows the resonant frequencies of the antenna to be modified This tab allows also to broaden the resonance bandwidths of the antenna.
  • This tab may have a length of 10mm for a width of 6mm. This tab is preferably located on one of the ends or tails of the patch.
  • FIGS. 6 and 7 show an antenna according to the invention.
  • the tablet has a thickness of 100 ⁇ m and is made of copper.
  • the supply link is a tab with a width of 1mm.
  • the link short circuit is a 3mm wide tab.
  • the slot has a width of 1mm.
  • the substrate is a polymethacrylimide foam having a clearance of 1mm on 3 of its faces.
  • the ground is a 44mm by 110mm PCB.
  • FIG. 8 represents a spectrum of the reflection frequencies at input, measured on the antenna of FIGS. 6 and 7.
  • a weak reflection of the antenna at a given frequency corresponds to a resonance of the antenna.
  • Two frequencies are complementary to form a secondary resonance frequency band widened B1 between 1020MHz and 1260MHz.
  • the central frequency is 1145 MHz; The bandwidth is thus 21% for this band.
  • Resonance frequencies are also complementary to form a resonant frequency band primary B2 extended between 2005MHz and 2740MHz.
  • the center frequency is worth 2350MHz.
  • the width of this strip is approximately 30%. Using appropriate antenna settings described above, you can easily adapt the frequency bands to cover GSM, DCS, PCS and UMTS.
  • the placement of the antenna in the case of a mobile phone generally lowers the frequency center of the resonant frequency bands, keeping a width of constant percentage band.
  • the frequency bands are thus just offset.
  • the presence of a battery, a headset, a microphone, electronic components or the support card also changes the value of the center frequency of a resonant frequency band.
  • frequency bands B1 and B2 including the E-GSM and DCS-PCS-UMTS bands respectively.
  • the E-GSM band has a width of 8.7%.
  • the band from DCS to UMTS presents a 25% width.
  • the characteristics of the antenna are thus amply sufficient to cover these bands.
  • the invention further relates to a radiocommunication device.
  • a radiocommunication device comprising an antenna as described above.
  • the antenna can be arranged inside a protective housing of the device.
  • the invention also relates to a method of manufacturing an antenna.
  • Such a manufacturing process includes a step of cutting two slots sinuous in a metallic sheet.
  • this method comprises a step of cutting a short circuit tab.
  • the method comprises a step for cutting a supply link.
  • the method includes a step of cutting an electrical connection over part of the width metal sheet.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Aerials (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
EP02290493A 2001-03-15 2002-02-28 PIFA-Antenne mit Schlitzen Expired - Lifetime EP1241733B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0103529A FR2822301B1 (fr) 2001-03-15 2001-03-15 Antenne a bande elargie pour appareils mobiles
FR0103529 2001-03-15

Publications (2)

Publication Number Publication Date
EP1241733A1 true EP1241733A1 (de) 2002-09-18
EP1241733B1 EP1241733B1 (de) 2008-08-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02290493A Expired - Lifetime EP1241733B1 (de) 2001-03-15 2002-02-28 PIFA-Antenne mit Schlitzen

Country Status (7)

Country Link
US (1) US6798382B2 (de)
EP (1) EP1241733B1 (de)
JP (1) JP2002314326A (de)
CN (1) CN100388560C (de)
AT (1) ATE403951T1 (de)
DE (1) DE60228010D1 (de)
FR (1) FR2822301B1 (de)

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EP1304765A2 (de) * 2001-10-22 2003-04-23 Filtronic LK Oy Interne Mehrbandantenne
EP1374336A1 (de) * 2001-03-28 2004-01-02 Motorola, Inc. Interne mehrbandantennen für die mobilkommunikation
EP1568101A2 (de) * 2002-11-08 2005-08-31 Centurion Wireless Technologies, Inc. Optimale ausnutzung des schlitzabstands in einem pifa-entwurf
EP1587161A1 (de) * 2004-04-13 2005-10-19 Sharp Kabushiki Kaisha Antenne und diese benutzendes mobiles Funkgerät
US7224312B2 (en) 2002-11-28 2007-05-29 Research In Motion Limited Multiple-band antenna with patch and slot structures
EP1796212A1 (de) 2005-12-08 2007-06-13 Alps Electric Co., Ltd. Patchantenne
EP1576695B1 (de) * 2002-12-06 2008-06-11 Research In Motion Limited Mehrfachband-antenne mit gemeinsam genutzter schlitzstruktur
WO2009042393A1 (en) * 2007-09-28 2009-04-02 Motorola, Inc. Radio frequency antenna
CN101777699A (zh) * 2009-01-09 2010-07-14 智易科技股份有限公司 单频天线和天线模块
EP2320517A1 (de) * 2002-11-28 2011-05-11 Research In Motion Limited Multibandantenne mit Patch- und Schlitzstrukturen
US9130267B2 (en) 2007-03-30 2015-09-08 Fractus, S.A. Wireless device including a multiband antenna system
WO2016097362A1 (fr) * 2014-12-19 2016-06-23 Commissariat A L'energie Atomique Et Aux Energies Alternatives Antenne fil-plaque ayant un toit capacitif incorporant une fente entre la sonde d'alimentation et le fil de court-circuit
WO2018011635A1 (en) * 2016-07-14 2018-01-18 Alcatel Lucent Microstrip antenna, antenna array and method of manufacturing microstrip antenna

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US6664930B2 (en) 2001-04-12 2003-12-16 Research In Motion Limited Multiple-element antenna
AU2003243857A1 (en) * 2002-06-21 2004-01-06 Research In Motion Limited Multiple-element antenna with parasitic coupler
EP1522122A1 (de) 2002-07-15 2005-04-13 Fractus S.A. Notch-gespeiste antenne
CN100495816C (zh) * 2002-11-08 2009-06-03 圣韵无线技术公司 在平面倒f型天线(pifa)设计中槽的最佳利用
EP1586134A1 (de) * 2003-01-24 2005-10-19 Fractus, S.A. Mikrostreifen-patch-antennen mit breitseite und hoher gerichtetheit
JP2004266573A (ja) * 2003-02-28 2004-09-24 Nissei Electric Co Ltd 多周波アンテナ素子及び多周波アンテナ
DE60316666T2 (de) 2003-05-14 2008-07-24 Research In Motion Ltd., Waterloo Mehrbandantenne mit Streifenleiter- und Schlitzstrukturen
DE60319965T2 (de) * 2003-06-12 2009-04-30 Research In Motion Ltd., Waterloo Mehrelement-Antenne mit parasitärem Antennenelement
US6980173B2 (en) * 2003-07-24 2005-12-27 Research In Motion Limited Floating conductor pad for antenna performance stabilization and noise reduction
US7161537B2 (en) * 2004-04-27 2007-01-09 Intelwaves Technologies Ltd. Low profile hybrid phased array antenna system configuration and element
US7369089B2 (en) * 2004-05-13 2008-05-06 Research In Motion Limited Antenna with multiple-band patch and slot structures
US7372411B2 (en) * 2004-06-28 2008-05-13 Nokia Corporation Antenna arrangement and method for making the same
TWM284084U (en) * 2004-12-28 2005-12-21 Shiu Juo Gang Antenna structure
US8600521B2 (en) * 2005-01-27 2013-12-03 Cyberonics, Inc. Implantable medical device having multiple electrode/sensor capability and stimulation based on sensed intrinsic activity
KR20130084124A (ko) 2012-01-16 2013-07-24 삼성전자주식회사 통신장치
US9300050B2 (en) 2013-02-22 2016-03-29 Bang & Olufsen A/S Multiband RF antenna
EP3091610B1 (de) * 2015-05-08 2021-06-23 TE Connectivity Germany GmbH Antennensystem und antennenmodul mit verminderter interferenz zwischen strahlungsmustern
CN105182194A (zh) * 2015-08-25 2015-12-23 胡达凯 一种高准确率的变电站局部放电信号检测系统
CN105552550B (zh) * 2016-01-30 2019-08-20 华为技术有限公司 一种贴片天线单元及天线
EP3555957A4 (de) * 2017-07-17 2020-08-12 Hewlett-Packard Development Company, L.P. Geschlitzte patchantennen
CN110011056A (zh) * 2019-05-16 2019-07-12 南京信息工程大学 紧耦合缝隙宽带天线

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EP1018779A2 (de) * 1999-01-05 2000-07-12 Lk-Products Oy Ebene Antenne für zwei Frequenzen und Funkgerät mit einer derartigen Antenne
EP1079462A2 (de) * 1999-08-25 2001-02-28 Filtronic LK Oy Planare Antennenstruktur

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US6466170B2 (en) * 2001-03-28 2002-10-15 Motorola, Inc. Internal multi-band antennas for mobile communications
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FR2772518A1 (fr) * 1997-12-11 1999-06-18 Alsthom Cge Alcatel Antenne a court-circuit realisee selon la technique des microrubans et dispositif incluant cette antenne
EP0954055A1 (de) * 1998-04-30 1999-11-03 Alcatel Antenne für zwei Frequenzen für die Radiokommunikation in Form einer Mikrostreifenleiterantenne
WO2000036700A1 (en) * 1998-12-16 2000-06-22 Telefonaktiebolaget Lm Ericsson (Publ) Printed multi-band patch antenna
EP1018779A2 (de) * 1999-01-05 2000-07-12 Lk-Products Oy Ebene Antenne für zwei Frequenzen und Funkgerät mit einer derartigen Antenne
EP1079462A2 (de) * 1999-08-25 2001-02-28 Filtronic LK Oy Planare Antennenstruktur

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EP1374336A1 (de) * 2001-03-28 2004-01-02 Motorola, Inc. Interne mehrbandantennen für die mobilkommunikation
EP1374336A4 (de) * 2001-03-28 2005-04-06 Motorola Inc Interne mehrbandantennen für die mobilkommunikation
EP1304765A2 (de) * 2001-10-22 2003-04-23 Filtronic LK Oy Interne Mehrbandantenne
EP1304765A3 (de) * 2001-10-22 2004-03-24 Filtronic LK Oy Interne Mehrbandantenne
EP1568101A2 (de) * 2002-11-08 2005-08-31 Centurion Wireless Technologies, Inc. Optimale ausnutzung des schlitzabstands in einem pifa-entwurf
KR101012731B1 (ko) * 2002-11-08 2011-02-09 센츄리온 와이어리스 테크놀로지스 인코퍼레이티드 Ｐｉｆａ 설계에서 슬롯 간극의 최적 이용법
EP1568101A4 (de) * 2002-11-08 2006-01-04 Centurion Wireless Tech Inc Optimale ausnutzung des schlitzabstands in einem pifa-entwurf
US7183982B2 (en) 2002-11-08 2007-02-27 Centurion Wireless Technologies, Inc. Optimum Utilization of slot gap in PIFA design
EP1914831A3 (de) * 2002-11-28 2009-05-27 Research In Motion Limited Multibandantenne mit Patch- und Schlitzstrukturen
US7916087B2 (en) 2002-11-28 2011-03-29 Research In Motion Limited Multiple-band antenna with patch and slot structures
US7283097B2 (en) 2002-11-28 2007-10-16 Research In Motion Limited Multi-band antenna with patch and slot structures
EP1914831A2 (de) * 2002-11-28 2008-04-23 Research In Motion Limited Multibandantenne mit Patch- und Schlitzstrukturen
EP1573856B1 (de) * 2002-11-28 2008-05-28 Research In Motion Limited Mehrfachband-antenne mit patch- und schlitzstrukturen
US9397398B2 (en) 2002-11-28 2016-07-19 Blackberry Limited Multiple-band antenna with patch and slot structures
US7466271B2 (en) 2002-11-28 2008-12-16 Research In Motion Limited Multiple-band antenna with patch and slot structures
US8878731B2 (en) 2002-11-28 2014-11-04 Blackberry Limited Multiple-band antenna with patch and slot structures
US7224312B2 (en) 2002-11-28 2007-05-29 Research In Motion Limited Multiple-band antenna with patch and slot structures
US8531336B2 (en) 2002-11-28 2013-09-10 Blackberry Limited Multiple-band antenna with patch and slot structures
US8207896B2 (en) 2002-11-28 2012-06-26 Research In Motion Limited Multiple-band antenna with patch and slot structures
EP2320517A1 (de) * 2002-11-28 2011-05-11 Research In Motion Limited Multibandantenne mit Patch- und Schlitzstrukturen
EP1576695B1 (de) * 2002-12-06 2008-06-11 Research In Motion Limited Mehrfachband-antenne mit gemeinsam genutzter schlitzstruktur
EP1587161A1 (de) * 2004-04-13 2005-10-19 Sharp Kabushiki Kaisha Antenne und diese benutzendes mobiles Funkgerät
US7589673B2 (en) 2004-04-13 2009-09-15 Sharp Kabushiki Kaisha Antenna and mobile wireless equipment using the same
EP1796212A1 (de) 2005-12-08 2007-06-13 Alps Electric Co., Ltd. Patchantenne
US11145955B2 (en) 2007-03-30 2021-10-12 Ignion, S.L. Wireless device including a multiband antenna system
US9130267B2 (en) 2007-03-30 2015-09-08 Fractus, S.A. Wireless device including a multiband antenna system
US10476134B2 (en) 2007-03-30 2019-11-12 Fractus, S.A. Wireless device including a multiband antenna system
WO2009042393A1 (en) * 2007-09-28 2009-04-02 Motorola, Inc. Radio frequency antenna
CN101777699A (zh) * 2009-01-09 2010-07-14 智易科技股份有限公司 单频天线和天线模块
FR3030909A1 (fr) * 2014-12-19 2016-06-24 Commissariat Energie Atomique Antenne fil-plaque ayant un toit capacitif incorporant une fente entre la sonde d'alimentation et le fil de court-circuit
WO2016097362A1 (fr) * 2014-12-19 2016-06-23 Commissariat A L'energie Atomique Et Aux Energies Alternatives Antenne fil-plaque ayant un toit capacitif incorporant une fente entre la sonde d'alimentation et le fil de court-circuit
US10547115B2 (en) 2014-12-19 2020-01-28 Commissariat A L'energie Atomique Et Aux Energies Alternatives Wire-plate antenna having a capacitive roof incorporating a slot between the feed probe and the short-circuit wire
WO2018011635A1 (en) * 2016-07-14 2018-01-18 Alcatel Lucent Microstrip antenna, antenna array and method of manufacturing microstrip antenna

Also Published As

Publication number Publication date
EP1241733B1 (de) 2008-08-06
FR2822301B1 (fr) 2004-06-04
US20030011521A1 (en) 2003-01-16
CN1375890A (zh) 2002-10-23
DE60228010D1 (de) 2008-09-18
US6798382B2 (en) 2004-09-28
CN100388560C (zh) 2008-05-14
ATE403951T1 (de) 2008-08-15
FR2822301A1 (fr) 2002-09-20
JP2002314326A (ja) 2002-10-25

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