EP1406345A1 - PIFA-Antenne mit Zusatzinduktivität - Google Patents
PIFA-Antenne mit Zusatzinduktivität Download PDFInfo
- Publication number
- EP1406345A1 EP1406345A1 EP02016026A EP02016026A EP1406345A1 EP 1406345 A1 EP1406345 A1 EP 1406345A1 EP 02016026 A EP02016026 A EP 02016026A EP 02016026 A EP02016026 A EP 02016026A EP 1406345 A1 EP1406345 A1 EP 1406345A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inductance
- antenna
- pifa antenna
- frequency
- pifa
- 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
Links
- PEZNEXFPRSOYPL-UHFFFAOYSA-N (bis(trifluoroacetoxy)iodo)benzene Chemical compound FC(F)(F)C(=O)OI(OC(=O)C(F)(F)F)C1=CC=CC=C1 PEZNEXFPRSOYPL-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000010295 mobile communication Methods 0.000 claims description 2
- 230000001413 cellular effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
-
- 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
- H01Q5/364—Creating multiple current paths
- H01Q5/371—Branching current paths
-
- 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
- H01Q5/378—Combination of fed elements with parasitic elements
-
- 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
Definitions
- the invention relates to a PIFA antenna for a mobile Communication terminal, with one ground point and one High frequency feed point and a method of switching a PIFA antenna between a first mobile radio standard frequency range and a second mobile radio standard frequency range.
- Such antennas are used for example in cell phones Communication connections with associated base stations a cellular network used. They are either as Monoband antenna, increasingly designed as a multiband antenna, to take into account the fact that in different Regions of the world respective cellular services different Use radio frequency ranges.
- an antenna is a frequency dependent Is a special design of the device Antenna for every possible combination of frequency bands needed. If the antenna is designed as an internal antenna as is the case with the PIFA antenna different sizes and volumes of antennas different Housing so that for the respective frequency bands in which a mobile phone should be usable, adjustments are often necessary are.
- the invention is based on the object to create a PIFA antenna that is simple with respect to at least one of their resonance frequency ranges is changeable.
- a method should also be specified to a PIFA antenna between a first mobile radio standard frequency range and a second mobile radio standard frequency range switch.
- a resonance frequency range of one PIFA antenna for example a first mobile radio standard frequency range corresponds, by means of an additional Change inductance so that the PIFA antenna has a Has resonance frequency range for a second Standard mobile radio frequency range is suitable.
- An electrical connection between the inductor and the High-frequency feed point can be designed that the inductance can be decoupled from the PIFA antenna. This makes it easy to switch between reach two mobile radio standard frequency ranges.
- the PIFA antenna is a monoband antenna trained, for example, with the help of inductance from the standard frequency range at 850 MHz to 900 MHz can switch. Training as a multiband antenna is also possible, the multi-band antenna with a single High frequency feed point can be equipped.
- the invention also relates to a method for switching a PIFA antenna between a first mobile radio standard frequency range and a second mobile radio standard frequency range, the PIFA antenna with at least one Ground contact and a high frequency feed point equipped is, that when switching an inductance between the high frequency feed point and a ground point is switched, which is dimensioned such that when the Inductance is decoupled, the PIFA antenna for the first Cellular standard frequency range is adjusted and if the Inductance is switched on, the PIFA antenna for the second Mobile radio standard frequency range is adjusted.
- the antenna 1 shows a monoband PIFA antenna, the an antenna area P1, a ground contact point G1 and has a high frequency supply point S1, via which a High frequency signal that is fed through the antenna is emitted. Between the high frequency feed point S1 and ground, an inductance L_p is connected, the Ground is electrically connected to the ground point G1.
- the inductance L_p is dimensioned such that in the case if the inductance L_p is present, the PIFA antenna for a first mobile radio standard frequency range is adapted. If a mobile phone that is equipped with the antenna operated in another mobile radio standard frequency range the antenna is equipped with inductance L_p, creating a resonant frequency range of the antenna as desired is moved.
- the size of the inductor leaves can be determined empirically without further ado and is basically in the range of a few nH.
- FIG. 2 shows an equivalent circuit diagram of that shown in Figure 1 Mono-band PIFA antenna.
- the PIFA antenna without the inductance L_p due to the parallel connection an inductance L_a and a capacitance C_a.
- a triband PIFA antenna emerges from FIG has first antenna area P1, which corresponds essentially a rectangular line is formed, but in the area one corner of the rectangle has an opening O and one right-angled second antenna area P2 essentially encloses. Both the antenna area P2 and the Antenna area P1 have associated ground contact points G1, G2 on. The second antenna area P2 is on electromagnetically the antenna area P1 coupled. At the outer edge of the antenna surface P1 a high-frequency feed point S1 is provided, from which the antenna surface P1 extends to one side over two corners and to the other side over a corner of the Rectangle extends.
- One with respect to the high frequency feed point S1 long arm of antenna area P1 is for the standard mobile radio frequency range at 850 MHz (North American GSM standard) or for the standard mobile radio frequency range provided at 900 MHz (European GSM standard).
- the one related to the high frequency feed point S1 short arm of the antenna area P1 serves together with the second antenna area P2 the GSM frequency bands at 1,800 MHz (European GSM standard) and 1,900 MHz (North American GSM standard).
- the long arm of the antenna area P1 serves the mobile radio standard frequency range at 900 MHz. Will the inductance L_p switched on, the resonance frequency range of the long Arms of the antenna area P1 shifted by 50 MHz to 850 MHz. This is particularly clear from Figure 4. With this For example, the value of the inductance L_p in the range lie between 8 and 35 nH to between the two low-frequency Switch GSM standard frequency bands or ranges.
- an inductance connection L_p can be chosen so that it affects the resonance frequency properties of the short arm of the antenna surface P1 and the antenna area P2 only in negligible Dimensions are to be expected. Because of this, by connecting the inductance L_p is the triband PIFA antenna shown in FIG. 3 simply by switching on or off the Inductance L_p with regard to its lowest mobile radio standard frequency range to be changed.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Support Of Aerials (AREA)
- Burglar Alarm Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Transceivers (AREA)
- Details Of Aerials (AREA)
Abstract
Description
- Figur 1
- eine Monoband-PIFA-Antenne mit einer zusätzlichen Induktivität,
- Figur 2
- ein Ersatzschaltbild der Monoband-PIFA-Antenne von Figur 1,
- Figur 3
- eine Multiband-PIFA-Antenne mit zusätzlicher Induktivität und
- Figur 4
- eine grafische Darstellung des Reflektionskoeffizienten S11 der PIFA-Antenne von Figur 3 im Frequenzbereich von 800 bis 1.000 MHz.
Claims (9)
- PIFA-Antenne für ein mobiles Kommunikationsendgerät, mit einem Massepunkt (G1; G2) und einem Hochfrequenz-Zuführungspunkt (S1),
dadurch gekenzeichnet, dass
zwischen dem Hochfrequenz-Zuführungspunkt (S1) und dem Massepunkt (G1; G2) eine Induktivität (L_p) zur Änderung einer Resonanzfrequenz der PIFA-Antenne geschaltet ist. - PIFA-Antenne nach Anspruch 1,
dadurch gekennzeichnet, dass
eine elektrische Verbindung zwischen der Induktivität (L_p) und dem Hochfrequenz-Zuführungspunkt (S1) derart ausgebildet ist, dass die Induktivität (L_p) von der PIFA-Antenne abkoppelbar ist. - PIFA-Antenne nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet, dass
die Induktivität (L_p) so bemessen ist, dass die Resonanzfrequenz der PIFA-Antenne im wesentlichen einem Frequenzbereich eines Mobilfunk-Standards entspricht. - PIFA-Antenne nach Anspruch 3,
dadurch gekennzeichnet, dass
sie als Multiband-Antenne ausgebildet ist. - PIFA-Antenne nach Anspruch 4,
dadurch gekennzeichnet, dass
die Induktivität (L_p) so bemessen ist, dass sie im wesentlichen eine Resonanzfrequenz eines niederfrequentesten Frequenzbandes beeinflusst. - PIFA-Antenne nach Anspruch 5,
dadurch gekennzeichnet, dass
die Induktivität (L_p) so gemessen ist, dass die niedrigste Resonanzfrequenz der PIFA-Antenne mit der Induktivität (L_p) im wesentlichen bei 850 MHz und ohne die Induktivität (L_p) im wesentlichen bei 900 MHz liegt. - Verfahren zum Umschalten einer PIFA-Antenne zwischen einem ersten Mobilfunk-Standardfrequenzbereich und einem zweiten Mobilfunk-Standardfrequenzbereich, wobei die PIFA-Antenne mit mindestens einem Massepunkt (G1; G2) und einem Hochfrequenzzuführungspunkt (S1 ausgestattet ist,
dadurch gekennzeichnet, dass
bei der Umschaltung eine Induktivität (L_p) zwischen den Hochfrequenz-Zuführungspunkt (G1; G2) und einen Massepunkt (G1; G2) geschaltet wird, die so bemessen ist,
dass, wenn die Induktivität (L_p) abgekoppelt ist, die PIFA-Antenne für den ersten Mobilfunk-Standardfrequenzbereich angepasst ist und,
wenn die Induktivität (L_p) zugeschaltet ist, die PIFA-Antenne für den zweiten Mobilfunk-Standardfrequenzbereich angepasst ist. - Verfahren nach Anspruch 7,
dadurch gekennzeichnet, dass
die Umschaltung zwischen einem GSM-Band bei 850 MHz und einem EGSM-Band bei 900 MHz erfolgt. - Verfahren nach Anspruch 8,
dadurch gekennzeichnet, dass
der Wert der Induktivität (L_p) im Bereich von 8 bis 35 nH liegt.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE50206584T DE50206584D1 (de) | 2002-07-18 | 2002-07-18 | PIFA-Antenne mit Zusatzinduktivität |
| EP02016026A EP1406345B1 (de) | 2002-07-18 | 2002-07-18 | PIFA-Antenne mit Zusatzinduktivität |
| AT02016026T ATE324680T1 (de) | 2002-07-18 | 2002-07-18 | Pifa-antenne mit zusatzinduktivität |
| DK02016026T DK1406345T3 (da) | 2002-07-18 | 2002-07-18 | PIFA-antenne med tillægsinduktans |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02016026A EP1406345B1 (de) | 2002-07-18 | 2002-07-18 | PIFA-Antenne mit Zusatzinduktivität |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1406345A1 true EP1406345A1 (de) | 2004-04-07 |
| EP1406345B1 EP1406345B1 (de) | 2006-04-26 |
Family
ID=31985017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02016026A Expired - Lifetime EP1406345B1 (de) | 2002-07-18 | 2002-07-18 | PIFA-Antenne mit Zusatzinduktivität |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1406345B1 (de) |
| AT (1) | ATE324680T1 (de) |
| DE (1) | DE50206584D1 (de) |
| DK (1) | DK1406345T3 (de) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1592084A1 (de) * | 2004-04-26 | 2005-11-02 | LK Products Oy | Antennenelement und dessen Herstellungsverfahren |
| WO2007040639A1 (en) * | 2005-09-29 | 2007-04-12 | Sony Ericsson Mobile Communications Ab | Multi-band pifa |
| US7903035B2 (en) | 2005-10-10 | 2011-03-08 | Pulse Finland Oy | Internal antenna and methods |
| US9509054B2 (en) | 2012-04-04 | 2016-11-29 | Pulse Finland Oy | Compact polarized antenna and methods |
| US9634383B2 (en) | 2013-06-26 | 2017-04-25 | Pulse Finland Oy | Galvanically separated non-interacting antenna sector apparatus and methods |
| US9647338B2 (en) | 2013-03-11 | 2017-05-09 | Pulse Finland Oy | Coupled antenna structure and methods |
| US9673507B2 (en) | 2011-02-11 | 2017-06-06 | Pulse Finland Oy | Chassis-excited antenna apparatus and methods |
| US9680212B2 (en) | 2013-11-20 | 2017-06-13 | Pulse Finland Oy | Capacitive grounding methods and apparatus for mobile devices |
| US9722308B2 (en) | 2014-08-28 | 2017-08-01 | Pulse Finland Oy | Low passive intermodulation distributed antenna system for multiple-input multiple-output systems and methods of use |
| US9761951B2 (en) | 2009-11-03 | 2017-09-12 | Pulse Finland Oy | Adjustable antenna apparatus and methods |
| US9906260B2 (en) | 2015-07-30 | 2018-02-27 | Pulse Finland Oy | Sensor-based closed loop antenna swapping apparatus and methods |
| US9917346B2 (en) | 2011-02-11 | 2018-03-13 | Pulse Finland Oy | Chassis-excited antenna apparatus and methods |
| US9948002B2 (en) | 2014-08-26 | 2018-04-17 | Pulse Finland Oy | Antenna apparatus with an integrated proximity sensor and methods |
| US9973228B2 (en) | 2014-08-26 | 2018-05-15 | Pulse Finland Oy | Antenna apparatus with an integrated proximity sensor and methods |
| US9979078B2 (en) | 2012-10-25 | 2018-05-22 | Pulse Finland Oy | Modular cell antenna apparatus and methods |
| US10069209B2 (en) | 2012-11-06 | 2018-09-04 | Pulse Finland Oy | Capacitively coupled antenna apparatus and methods |
| US10079428B2 (en) | 2013-03-11 | 2018-09-18 | Pulse Finland Oy | Coupled antenna structure and methods |
| US10211538B2 (en) | 2006-12-28 | 2019-02-19 | Pulse Finland Oy | Directional antenna apparatus and methods |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1989652B (zh) | 2004-06-28 | 2013-03-13 | 脉冲芬兰有限公司 | 天线部件 |
| FI20055420A0 (fi) | 2005-07-25 | 2005-07-25 | Lk Products Oy | Säädettävä monikaista antenni |
| FI119009B (fi) | 2005-10-03 | 2008-06-13 | Pulse Finland Oy | Monikaistainen antennijärjestelmä |
| FI118782B (fi) | 2005-10-14 | 2008-03-14 | Pulse Finland Oy | Säädettävä antenni |
| US8618990B2 (en) | 2011-04-13 | 2013-12-31 | Pulse Finland Oy | Wideband antenna and methods |
| FI20075269A0 (fi) | 2007-04-19 | 2007-04-19 | Pulse Finland Oy | Menetelmä ja järjestely antennin sovittamiseksi |
| FI120427B (fi) | 2007-08-30 | 2009-10-15 | Pulse Finland Oy | Säädettävä monikaista-antenni |
| FI20096251A0 (sv) | 2009-11-27 | 2009-11-27 | Pulse Finland Oy | MIMO-antenn |
| US8847833B2 (en) | 2009-12-29 | 2014-09-30 | Pulse Finland Oy | Loop resonator apparatus and methods for enhanced field control |
| FI20105158A7 (fi) | 2010-02-18 | 2011-08-19 | Pulse Finland Oy | Kuorisäteilijällä varustettu antenni |
| US9406998B2 (en) | 2010-04-21 | 2016-08-02 | Pulse Finland Oy | Distributed multiband antenna and methods |
| FI20115072A0 (fi) | 2011-01-25 | 2011-01-25 | Pulse Finland Oy | Moniresonanssiantenni, -antennimoduuli ja radiolaite |
| US8866689B2 (en) | 2011-07-07 | 2014-10-21 | Pulse Finland Oy | Multi-band antenna and methods for long term evolution wireless system |
| US9450291B2 (en) | 2011-07-25 | 2016-09-20 | Pulse Finland Oy | Multiband slot loop antenna apparatus and methods |
| US9123990B2 (en) | 2011-10-07 | 2015-09-01 | Pulse Finland Oy | Multi-feed antenna apparatus and methods |
| US9531058B2 (en) | 2011-12-20 | 2016-12-27 | Pulse Finland Oy | Loosely-coupled radio antenna apparatus and methods |
| US9484619B2 (en) | 2011-12-21 | 2016-11-01 | Pulse Finland Oy | Switchable diversity antenna apparatus and methods |
| US9590308B2 (en) | 2013-12-03 | 2017-03-07 | Pulse Electronics, Inc. | Reduced surface area antenna apparatus and mobile communications devices incorporating the same |
| US9350081B2 (en) | 2014-01-14 | 2016-05-24 | Pulse Finland Oy | Switchable multi-radiator high band antenna apparatus |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475108A (en) * | 1982-08-04 | 1984-10-02 | Allied Corporation | Electronically tunable microstrip antenna |
| JPS61206322A (ja) * | 1985-03-11 | 1986-09-12 | Fujitsu Ltd | アンテナインピ−ダンス整合回路 |
| JPH08148960A (ja) * | 1994-11-25 | 1996-06-07 | Oki Electric Ind Co Ltd | アンテナ整合回路 |
| JPH10190345A (ja) * | 1996-12-25 | 1998-07-21 | Sharp Corp | 周波数切替式逆fアンテナ |
| EP0993070A1 (de) * | 1998-09-30 | 2000-04-12 | Nec Corporation | Invertierte F-Antenne mit zugeschalteter Impedanz |
| EP1162688A1 (de) * | 1999-09-30 | 2001-12-12 | Murata Manufacturing Co., Ltd. | Oberflächenmontierbare antenne und kommunikationsgerät mit einer derartigen antenne |
| WO2002043182A1 (de) * | 2000-11-24 | 2002-05-30 | Siemens Aktiengesellschaft | Pifa-antennenvorrichtung für mobile kommunikationsendgeräte |
-
2002
- 2002-07-18 DK DK02016026T patent/DK1406345T3/da active
- 2002-07-18 EP EP02016026A patent/EP1406345B1/de not_active Expired - Lifetime
- 2002-07-18 DE DE50206584T patent/DE50206584D1/de not_active Expired - Fee Related
- 2002-07-18 AT AT02016026T patent/ATE324680T1/de not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475108A (en) * | 1982-08-04 | 1984-10-02 | Allied Corporation | Electronically tunable microstrip antenna |
| JPS61206322A (ja) * | 1985-03-11 | 1986-09-12 | Fujitsu Ltd | アンテナインピ−ダンス整合回路 |
| JPH08148960A (ja) * | 1994-11-25 | 1996-06-07 | Oki Electric Ind Co Ltd | アンテナ整合回路 |
| JPH10190345A (ja) * | 1996-12-25 | 1998-07-21 | Sharp Corp | 周波数切替式逆fアンテナ |
| EP0993070A1 (de) * | 1998-09-30 | 2000-04-12 | Nec Corporation | Invertierte F-Antenne mit zugeschalteter Impedanz |
| EP1162688A1 (de) * | 1999-09-30 | 2001-12-12 | Murata Manufacturing Co., Ltd. | Oberflächenmontierbare antenne und kommunikationsgerät mit einer derartigen antenne |
| WO2002043182A1 (de) * | 2000-11-24 | 2002-05-30 | Siemens Aktiengesellschaft | Pifa-antennenvorrichtung für mobile kommunikationsendgeräte |
Non-Patent Citations (3)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 011, no. 041 (E - 478) 6 February 1987 (1987-02-06) * |
| PATENT ABSTRACTS OF JAPAN vol. 1996, no. 10 31 October 1996 (1996-10-31) * |
| PATENT ABSTRACTS OF JAPAN vol. 1998, no. 12 31 October 1998 (1998-10-31) * |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1592084A1 (de) * | 2004-04-26 | 2005-11-02 | LK Products Oy | Antennenelement und dessen Herstellungsverfahren |
| WO2007040639A1 (en) * | 2005-09-29 | 2007-04-12 | Sony Ericsson Mobile Communications Ab | Multi-band pifa |
| US7324054B2 (en) | 2005-09-29 | 2008-01-29 | Sony Ericsson Mobile Communications Ab | Multi-band PIFA |
| US7903035B2 (en) | 2005-10-10 | 2011-03-08 | Pulse Finland Oy | Internal antenna and methods |
| US10211538B2 (en) | 2006-12-28 | 2019-02-19 | Pulse Finland Oy | Directional antenna apparatus and methods |
| US9761951B2 (en) | 2009-11-03 | 2017-09-12 | Pulse Finland Oy | Adjustable antenna apparatus and methods |
| US9917346B2 (en) | 2011-02-11 | 2018-03-13 | Pulse Finland Oy | Chassis-excited antenna apparatus and methods |
| US9673507B2 (en) | 2011-02-11 | 2017-06-06 | Pulse Finland Oy | Chassis-excited antenna apparatus and methods |
| US9509054B2 (en) | 2012-04-04 | 2016-11-29 | Pulse Finland Oy | Compact polarized antenna and methods |
| US9979078B2 (en) | 2012-10-25 | 2018-05-22 | Pulse Finland Oy | Modular cell antenna apparatus and methods |
| US10069209B2 (en) | 2012-11-06 | 2018-09-04 | Pulse Finland Oy | Capacitively coupled antenna apparatus and methods |
| US9647338B2 (en) | 2013-03-11 | 2017-05-09 | Pulse Finland Oy | Coupled antenna structure and methods |
| US10079428B2 (en) | 2013-03-11 | 2018-09-18 | Pulse Finland Oy | Coupled antenna structure and methods |
| US9634383B2 (en) | 2013-06-26 | 2017-04-25 | Pulse Finland Oy | Galvanically separated non-interacting antenna sector apparatus and methods |
| US9680212B2 (en) | 2013-11-20 | 2017-06-13 | Pulse Finland Oy | Capacitive grounding methods and apparatus for mobile devices |
| US9948002B2 (en) | 2014-08-26 | 2018-04-17 | Pulse Finland Oy | Antenna apparatus with an integrated proximity sensor and methods |
| US9973228B2 (en) | 2014-08-26 | 2018-05-15 | Pulse Finland Oy | Antenna apparatus with an integrated proximity sensor and methods |
| US9722308B2 (en) | 2014-08-28 | 2017-08-01 | Pulse Finland Oy | Low passive intermodulation distributed antenna system for multiple-input multiple-output systems and methods of use |
| US9906260B2 (en) | 2015-07-30 | 2018-02-27 | Pulse Finland Oy | Sensor-based closed loop antenna swapping apparatus and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50206584D1 (de) | 2006-06-01 |
| ATE324680T1 (de) | 2006-05-15 |
| EP1406345B1 (de) | 2006-04-26 |
| DK1406345T3 (da) | 2006-08-21 |
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