EP2365582A1 - Agencement d'antenne - Google Patents

Agencement d'antenne Download PDF

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Publication number
EP2365582A1
EP2365582A1 EP10002865A EP10002865A EP2365582A1 EP 2365582 A1 EP2365582 A1 EP 2365582A1 EP 10002865 A EP10002865 A EP 10002865A EP 10002865 A EP10002865 A EP 10002865A EP 2365582 A1 EP2365582 A1 EP 2365582A1
Authority
EP
European Patent Office
Prior art keywords
antenna
frequency
frequency signal
feed point
signal
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
EP10002865A
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German (de)
English (en)
Other versions
EP2365582B1 (fr
Inventor
Dietmar Gapski
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.)
Gigaset Communications GmbH
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Gigaset Communications GmbH
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Filing date
Publication date
Application filed by Gigaset Communications GmbH filed Critical Gigaset Communications GmbH
Publication of EP2365582A1 publication Critical patent/EP2365582A1/fr
Application granted granted Critical
Publication of EP2365582B1 publication Critical patent/EP2365582B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • 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
    • H01Q5/35—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using two or more simultaneously fed points
    • 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
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole

Definitions

  • the invention relates to an antenna arrangement, comprising at least one antenna, wherein the antenna has a first feed point for feeding a first high-frequency signal.
  • Antenna arrangements with multiple antennas are generally used for communication in different frequency bands.
  • Antenna arrangements with multiple antennas are used in particular in mobile radio technology.
  • mobile radio technology For example, the most widespread and well-known mobile networks in Europe are the D network and the E network, whose frequencies are approximately 900 MHz and 1800 MHz, respectively.
  • Antenna arrangements in particular for mobile remote communication devices (mobile phones), place high demands on signal quality, energy efficiency and miniaturization. Due to advancing globalization and the associated global mobility, mobile remote communication devices must, in principle, be in a position to make radio contact with the base stations located there on a global scale. While in the early 1990s a frequency band in a mobile remote communication device for radio communication was sufficient, in most cases today's devices incorporate as many as four frequency bands for voice and data communication in mobile radio networks. Thus, mobile remote communication devices combine a plurality of physically available antennas, each antenna serving for communication in a particular frequency band.
  • the miniaturization of the mobile remote communication devices continues to progress, while at the same time increasing the functions and thus Electronics in the mobile distance communication devices continues to increase, the space for the required antennas is getting smaller.
  • the transmitter of an antenna usually also generates signals outside the desired frequency range.
  • the signals of these frequencies are usually not desired, but are considered disturbing. While this wideband noise tends to decrease very rapidly with distance in other frequency ranges, since the antennas of the various frequency bands are very close to each other in the mobile remote communication devices, such a radio signal of one antenna still acts as an interfering signal even in the adjacent antenna the case that the frequency bands of these two antennas are already far apart, as shown in the following example.
  • a call is to be made in the frequency band of the DECT standard ( ⁇ 1.89 GHz) via a mobile remote communication device, while at the same time the Bluetooth function ( ⁇ 2.45 GHz) is used for an assigned headset, a signal will "spark" into the other and thus can disrupt the smooth communication in the other frequency band.
  • the largely interference-free communication operation in these frequency bands can then be purchased for example by increasing the transmission power provided for the radio communication. Neither the disturbance of one signal by the other, nor the concomitant increase in energy output are desired. Because, on the one hand suffers the radio quality, on the other hand, the battery is charged more than necessary and thus shortens the battery life, or requires a higher battery capacity to keep the runtime constant high.
  • the object of the invention is to provide an improved antenna which avoids one or more disadvantages known from the prior art.
  • an antenna arrangement is provided with an antenna according to the invention, wherein the antenna has a first feed point for feeding a first high-frequency signal.
  • a second feed point which is different from the first feed point, for feeding a second high-frequency signal, which differs in frequency from the first high-frequency signal.
  • the first feed point is associated with a filter device which is adapted to reduce an interference signal which is based in the first feed point due to an injection of the second high-frequency signal into the second feed point.
  • the teaching according to the invention achieves the advantage that the number of physically existing antennas present in the mobile remote communication devices, with a constant number of supported frequency bands, can be reduced compared to the antennas known in the prior art.
  • Another advantage is that the number of supported frequency bands in the antenna array can be increased without the need to increase the number of physical antennas available physically.
  • Another advantage is that it is possible to decouple the frequencies fed within a physically existing antenna with each other, so that the "drunk" one frequency can be reduced to the other.
  • teaching of the invention makes it possible to further advance the miniaturization of the mobile remote communication devices.
  • the second feed point is associated with a second filter device, with the second filter device, a second interference signal can be reduced, which can arise in the second feed point due to an injection of the first high-frequency signal into the first feed point.
  • the teaching of the invention is not limited to an antenna.
  • a plurality of antennas in the antenna arrangement e.g. for 'antenna diversity', 'MiMo', etc., are present.
  • mobile remote communication device By a mobile remote communication device, on the one hand, mobile phones, such as “mobile phones” and DECT mobile phones, as well as base stations of the DECT mobile phones are meant, On the other hand, also built-in or installable plug-in cards, sticks, or telecommunications modules, such as USB sticks, UMTS modules, and many more
  • antenna arrangement for example dipole and slot antennas.
  • an antenna in the antenna arrangement is a dipole antenna or slot antenna.
  • all antennas in the antenna arrangement are dipole antennas and / or slot antennas.
  • a portion of the physically existing antenna serves as an effective antenna length, hereinafter called virtual antenna, for a first high-frequency signal, wherein the section is limited by high-frequency shorts.
  • a high-frequency short-circuit can be both a physically present DC short-circuit (electrical short circuit) and a frequency-dependent AC short-circuit.
  • Such a high frequency short circuit can be designed differently.
  • One way to represent a frequency-selective short circuit consists in attaching a further electrical line at the location of the desired short circuit, which acts through the appropriate geometry of the line, this point as a short circuit for a given frequency.
  • the physically existing antenna has a second section as effective antenna length (second virtual antenna) for a second high-frequency signal, wherein the second section is limited by high-frequency shorts.
  • the respective effective antenna length of the virtual antenna can be arbitrary, but can have at most the length which also includes the physically existing antenna.
  • the number of virtual antennas within a physically existing antenna is not limited to two.
  • the respective effective antenna length is half the wavelength of the respective high-frequency signal or a multiple thereof.
  • the virtual antenna lengths may or may not overlap.
  • the characteristic impedance of the line does not have to match the terminating resistance of the line. However, if these two resistances do not agree with each other, reflection occurs so that the full power can not be transmitted. Therefore, it is particularly advantageous if the characteristic impedance of the line coincides at least approximately with the terminating resistor of the line.
  • the first and / or the second feed point is arranged in the antenna such that the associated connection impedance is adapted to the characteristic impedance.
  • feed point of the high-frequency signal with the greatest bandwidth requirement in the physically existing antenna is arranged such that the associated connection impedance is adapted to the characteristic impedance.
  • an impedance converter is provided for a high-frequency signal whose connection impedance is not adapted to the characteristic impedance, with which the connection impedance can be adapted to the characteristic impedance.
  • the line resistance of the virtual antennas is preferably matched to the characteristic impedance. This is often 50 ⁇ in the mobile sector.
  • a filter device that can reduce an interference signal, which may arise in a first feed point, due to a feed of a second high-frequency signal in a second feed point
  • a frequency-selective electrical short circuit for attenuating a second high-frequency signal can be used in the filter device of a feed point.
  • this frequency-selective electrical short-circuit has the consequence that at the aforementioned feeding point in turn creates a disturbing reactive component. Therefore, in such a filter device, a compensation element may be provided to compensate for the reactive component of the frequency-selective electrical short circuit.
  • the configuration of this filter device can be done as a parallel arrangement.
  • the frequency-selective electrical short circuit in the filter device at the feed point generates a capacitive reactive component
  • this can be compensated for by an inductive reactive component of the same magnitude as the value.
  • the disturbing reactive component is inductive, it can be compensated by a capacitive reactive component of equal magnitude.
  • the frequency-selective electrical short-circuit point is at the feed point of the high-frequency signal, the desired decoupling between the two high-frequency signals, and the feed line of the virtual antenna of the first high-frequency signal is virtually non-existent for the compensated second high-frequency signal and thus can not be compensated second high-frequency signal in the Supply line of the first high-frequency signal "spark".
  • the second unwanted high-frequency signal is attenuated at the feed point of the first high-frequency signal.
  • a filter device for a virtual antenna at the feed point, which includes a frequency-selective electrical short circuit for attenuating the second high-frequency signal and a first compensation element for compensating the reactive component of the frequency-selective electrical short circuit.
  • Such a filter device may, but not necessarily, be provided for each feed point in an antenna.
  • a positive side effect of the filter device may be that it is able to attenuate further unwanted signals picked up by the antenna.
  • a second filter device is that includes a second frequency selective electrical short that attenuates the first high frequency signal and includes a second compensation element to compensate for the reactive portion of the second frequency selective electrical short.
  • Such a frequency-selective electrical short circuit can be designed differently. For example, it is conceivable to form it as an open electrical line, with a length of one quarter of the wavelength of each high-frequency signal to be decoupled or an odd multiple thereof.
  • the frequency-selective electrical short circuit as a closed electrical line, with a length of one half of the wavelength of the respective high-frequency signal to be decoupled or an even multiple thereof.
  • the frequency-selective electrical short circuit can also be designed as a concentrated component in the form of a series resonant circuit.
  • the frequency-selective short-circuit of the respective filter device is designed as an electrical line and has a length of one quarter of the wavelength of the respective high-frequency signal to be decoupled.
  • a fairly simple form of implementation is to design the compensation elements as reactances.
  • the compensation elements are designed as reactances.
  • high-frequency signals or high-frequency signals are preferably meant signals that start at a frequency of about 50 MHz and do not exceed about 10 GHz. In particular, this means signals that are between 400 MHz and 5 GHz.
  • These may be, in particular, second, third, fourth and future generation mobile radio technology networks, e.g. the D-network, the E-network and the like, as well as frequencies for other mobile technologies, such as in the standards of DECT and Bluetooth as well as for WLAN, Edge, GSM, GPRS, UMTS, etc. are used.
  • frequencies are meant that are used for "short-range radio” or "ZigBee” or are suitable for their use. In the future, in these areas, for example, the "digital dividend” will add additional frequency ranges from the former frequency range of analogue television and analogue radio.
  • the antenna arrangement according to the invention is described below in one embodiment and shown in the drawing.
  • FIG. 1 shows an embodiment according to a preferred embodiment of the invention Fig. 1
  • Fig. 1 shows an antenna arrangement with a physically existing antenna 100, which is preferably designed as a dipole antenna or slot antenna.
  • the physically existing antenna contains a first feed point 110 and a second feed point 120 for feeding in a first high-frequency signal f 1 and a second high-frequency signal f 2 .
  • the feeders 110, 120 each contain a filter device which consists of a parallel arrangement.
  • the parallel arrangement consists of an electrical line 113, 123, which serves as a frequency-dependent short circuit, and a reactance 114, 124 for blind compensation of this line 113, 123.
  • the two signals f 1 , f 2 each have their own supply line 111, 121 fed to the associated feed point 110, 120.
  • the first filter means at the first feed point 110 is comprised of the following parallel arrangement: an electrical line 113, which acts as a frequency-selective electric short-circuit for the frequency f 2, and the length of ⁇ 2/4 has the frequency f 2.
  • an electrical line 113 which acts as a frequency-selective electric short-circuit for the frequency f 2
  • the length of ⁇ 2/4 has the frequency f 2.
  • the parallel arrangement of the first filter means to the feed point 110 of a reactance 114 compensates for the reactive component of the frequency selective electrical short circuit 113, and serves as idling for the frequency f 1.
  • a second filter device For the second feed station 120, which feeds the second frequency f 2 , a second filter device is provided. This also consists of a parallel arrangement of an electrical line 123, which serves as a frequency-dependent short-circuit for the frequency f 1 and ⁇ 1/4 the frequency f 1 is long, and which compensates for the long ⁇ by the fourth line 123 resulting reactive component and acts as an open circuit for the frequency f 2, and a reactance 124.
  • the frequency-selective electrical short-circuit 113 in the filter device at the feed point 110 generates a capacitive reactive component
  • this can be compensated for by an inductive reactive component 114 of the same magnitude.
  • the disturbing reactive component is inductive, it can be compensated by a capacitive reactive component 114 of equal magnitude.
  • Analog created by the electrical short-circuit 125 and the frequency-dependent short-circuit 113 at the first feed point 110 is a portion functioning as a second virtual antenna with the length of ⁇ 2/2 frequency f 2.
  • each input high frequency signal f 1 .f 2 has its own virtual antenna 112, 122 within the physical antenna 100.
  • the high-frequency signal f 2 is virtually non-existent and at the second feed point 120, the high-frequency signal f 1 is virtually non-existent.
  • the two feed points 110, 120 are isolated from each other and the input high-frequency signals f 1 and f 2 , "do not see each other and therefore exert no interference from each other. This also applies to the case, as given here, that the two virtual antennas partially overlap in their position. Isolation means the decoupling of the first signal f 1 at the second feed point 120 and the second signal f 2 at the first feed point 110.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP10002865.3A 2010-03-05 2010-03-18 Agencement d'antenne Active EP2365582B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010010527 2010-03-05

Publications (2)

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EP2365582A1 true EP2365582A1 (fr) 2011-09-14
EP2365582B1 EP2365582B1 (fr) 2016-03-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3293819A1 (fr) * 2016-09-09 2018-03-14 Thomson Licensing Alimentation d'antenne conçue pour alimenter une antenne intégrée dans un dispositif électronique

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1012833A (fr) * 1949-02-18 1952-07-17 Marconi Wireless Telegraph Co Perfectionnements aux antennes d'avions
US2957172A (en) * 1958-09-05 1960-10-18 James E Howell Dual band slot antenna
US3417351A (en) * 1964-10-27 1968-12-17 Bell Telephone Labor Inc Digitally tuned microwave filter
JPS5854703A (ja) * 1981-09-29 1983-03-31 Toshiba Corp ２周波共用スロツトアンテナ
US5192927A (en) * 1991-07-03 1993-03-09 Industrial Technology Research Institute Microstrip spur-line broad-band band-stop filter
EP1494316A1 (fr) * 2003-07-02 2005-01-05 Thomson Licensing S.A. Antenne à double bande avec double porte
FR2861222A1 (fr) * 2003-10-17 2005-04-22 Thomson Licensing Sa Antenne planaire bi-bande
FR2873857A1 (fr) * 2004-07-28 2006-02-03 Thomson Licensing Sa Dispositif rayonnant a filtrage de frequence integre et procede de filtrage correspondant

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7755553B2 (en) * 2007-08-20 2010-07-13 Harris Corporation Multiband antenna system for body-worn and dismount applications
US7768462B2 (en) * 2007-08-22 2010-08-03 Apple Inc. Multiband antenna for handheld electronic devices

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1012833A (fr) * 1949-02-18 1952-07-17 Marconi Wireless Telegraph Co Perfectionnements aux antennes d'avions
US2957172A (en) * 1958-09-05 1960-10-18 James E Howell Dual band slot antenna
US3417351A (en) * 1964-10-27 1968-12-17 Bell Telephone Labor Inc Digitally tuned microwave filter
JPS5854703A (ja) * 1981-09-29 1983-03-31 Toshiba Corp ２周波共用スロツトアンテナ
US5192927A (en) * 1991-07-03 1993-03-09 Industrial Technology Research Institute Microstrip spur-line broad-band band-stop filter
EP1494316A1 (fr) * 2003-07-02 2005-01-05 Thomson Licensing S.A. Antenne à double bande avec double porte
FR2861222A1 (fr) * 2003-10-17 2005-04-22 Thomson Licensing Sa Antenne planaire bi-bande
FR2873857A1 (fr) * 2004-07-28 2006-02-03 Thomson Licensing Sa Dispositif rayonnant a filtrage de frequence integre et procede de filtrage correspondant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3293819A1 (fr) * 2016-09-09 2018-03-14 Thomson Licensing Alimentation d'antenne conçue pour alimenter une antenne intégrée dans un dispositif électronique
EP3293820A1 (fr) * 2016-09-09 2018-03-14 Thomson Licensing Alimentation d'antenne conçue pour alimenter une antenne intégrée dans un dispositif électronique

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EP2365582B1 (fr) 2016-03-16

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