EP0959525A2 - Agencement d' antenne et radiotéléphone - Google Patents

Agencement d' antenne et radiotéléphone Download PDF

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Publication number
EP0959525A2
EP0959525A2 EP99102339A EP99102339A EP0959525A2 EP 0959525 A2 EP0959525 A2 EP 0959525A2 EP 99102339 A EP99102339 A EP 99102339A EP 99102339 A EP99102339 A EP 99102339A EP 0959525 A2 EP0959525 A2 EP 0959525A2
Authority
EP
European Patent Office
Prior art keywords
radiator element
radio
reference potential
radiator
antenna arrangement
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
EP99102339A
Other languages
German (de)
English (en)
Other versions
EP0959525A3 (fr
EP0959525B1 (fr
Inventor
Markus Hoffmeister
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.)
Ipcom GmbH and Co KG
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0959525A2 publication Critical patent/EP0959525A2/fr
Publication of EP0959525A3 publication Critical patent/EP0959525A3/fr
Application granted granted Critical
Publication of EP0959525B1 publication Critical patent/EP0959525B1/fr
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
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
    • 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
    • H01Q1/245—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 means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic

Definitions

  • the invention relates to an antenna arrangement according to the Genus of independent claim 1 and a radio according to the genus of independent claim 8.
  • the housing on a first side a hearing device and on one second side opposite the first side Includes antenna element.
  • the antenna element is on the second side of the housing is movably mounted and points in at least a first position a directed and in at least a second position is an omnidirectional Radiation pattern on.
  • the antenna arrangement according to the invention with the features of The main claim has the advantage that at least a first radiator element and at least a second Radiator element over a reference potential surface are arranged adjacent that a feed of the first radiator element via an antenna network that the second radiator element between a high impedance and one low impedance switchable with the reference potential the reference potential surface is connected that the first Radiating element resonant at the operating wavelength is executed and that the resonance of the second Radiator element compared to the resonance of the first Radiator element is slightly out of tune. That way it is not necessary for an optional switchover between directional and omnidirectional Radiation characteristic of an antenna element movable to be carried out and thus exposed to mechanical wear. Due to the electronically implemented switching between directional radiation pattern and omnidirectional Radiation characteristics are eliminated for the user comparatively cumbersome positioning of a Antenna element, so that ease of use for the user is increased.
  • An advantage is that the slight detuning of the Resonance of the second radiator element compared to the Resonance of the first radiator element by varying the geometric dimensions of the second radiator element in Comparison to the geometric dimensions of the first Radiator element can take place. This measure requires little effort and cost in production.
  • the second radiator element via a semiconductor component, preferably a PIN diode, to connect with the reference potential. That way the switching process between a high impedance and a low-resistance connection of the second radiator element control electronically with the reference potential.
  • Another advantage is that the Semiconductor component switched into a blocking state as soon as it is determined that the connection quality falls below a first predetermined value, and that the Semiconductor component switched into a conductive state is as long as the connection quality is a second exceeds the specified value. That way, at poor connection quality automatically the second Radiator element connected to the reference potential with high resistance and thus an omnidirectional radiation pattern be achieved. Accordingly, with good Connection quality the second radiator element with low resistance to be connected to the reference potential, so that a directed radiation pattern is achieved.
  • connection quality automatically between the directional radiation characteristic, for example in the case of a radio, mainly the radiation in the Prevent the user's head, and the omnidirectional radiation pattern that mainly should ensure a good connection quality, can be switched over, when exceeding one predetermined connection quality the prevention of Irradiation in the user's head has priority.
  • Another advantage is that the impedance by means of an operating element is switchable. That way the user himself is comparatively simple, that is, without Changing the position of the antenna arrangement for example with regard to the housing of the radio, the Adjust the radiation pattern to your needs.
  • a particularly simple, low-effort and cost-saving Embodiment results in a rod-shaped Formation of the first radiator element and the second Radiator element.
  • Embodiments of the invention are in the drawing shown and in the following description explained.
  • 1 shows a first embodiment a radio with antenna arrangement according to the invention
  • Figure 2 shows a second embodiment of a radio 3 shows a third antenna arrangement according to the invention
  • Figure 4 is a flow chart for a Control of the radio with the invention Antenna arrangement
  • Figure 5 is a directed Emission characteristics
  • Figure 6 is an omnidirectional Radiation pattern.
  • 1 denotes a radio, for example a mobile, a cordless phone, a handheld radio, a Company radio, a base station or the like can.
  • a radio for example a mobile, a cordless phone, a handheld radio, a Company radio, a base station or the like can.
  • the radio 1 includes one Printed circuit board which has a reference potential surface 25.
  • the reference potential surface 25 can cover a part or also over the entire printed circuit board as in FIG. 1 expand.
  • the reference potential of the reference potential area 25 is identified by the reference symbol 80.
  • Above the Reference potential areas 25 are a first on the radio 1 Radiator element 5 and a second radiator element 10 arranged adjacent to each other.
  • a hearing device 45 is arranged on a first side surface 50 of the radio device 1, a hearing device 45 is arranged. which can include a speaker in an earpiece.
  • a second opposite the first side surface 50 Side surface of the radio device 1 is identified by the reference symbol 55 featured.
  • the second radiator element 10 is the one Hearing device 45 of the radio device 1 facing first Side surface 50 facing the first side surface 50 and the third side surface 55 connecting the third Side surface 110 arranged.
  • the first radiator element 5 is the second side surface facing away from the hearing device 45 55 arranged on the third side surface 110. There is a height 95 of the first radiator element 5 slightly less than a height 100 of the second Radiator element 10.
  • the first radiator element 5 and that second radiator element 10 form an antenna arrangement.
  • the Height 95 of the first radiator element 5 is chosen so that the radiator element is operated in its ⁇ / 4 resonance. It is fed by an antenna network 30.
  • 10 received signals are from Antenna network 30 after appropriate conversion to Playback forwarded to the hearing device 45.
  • the Antenna network 30 is also with a controller 85 of Radio 1 connected to which an input unit 90 with an operating element 40 is connected.
  • the controller 85 delivers a control signal to the anode of a PIN diode 35, whose cathode is connected to the reference potential 80.
  • the Anode of PIN diode 35 is also with the second one Radiator element 10 connected.
  • the reference potential surface 25 forms a counterweight to the antenna arrangement 5, 10. If the control 85 supplies the PIN diode 35 with a high-level control signal, the PIN diode 35 becomes conductive and the second radiator element 10 is connected at its base point 150 to the reference potential 80 with a low resistance .
  • the fed first radiator element 5 is resonant at the operating wavelength ⁇ . Due to the greater height 100 of the second antenna element 10 not being fed, its resonance frequency is slightly detuned with respect to the resonance frequency of the first antenna element 5. This results in a phase shift of the current on the second radiator element 10 compared to the fed first radiator element 5 and there is a directional effect.
  • FIG. 5 shows a directional diagram of such a directed radiation characteristic 15, the greatest directivity of which occurs at 300 ° and the lowest directivity of which occurs at 120 °.
  • the location of the hearing device 45 is therefore in the range from 60 ° to 160 ° according to FIG.
  • the controller 85 uses connection data received from the antenna network 30 to check whether the field strength of a currently established radio connection and / or an error measurement of the data stream transmitted during the radio connection and / or the like can determine whether the connection quality exceeds a second predetermined value. This can be checked, for example, by checking in the controller 85 whether the field strength of the connection and / or the error rate of the data stream transmitted during the connection are below a respectively predetermined value.
  • the PIN diode 35 is driven by the controller 85 to a high level, so that the antenna arrangement 5, 10 acts as a directional radiator and, due to its radiation characteristic, reduces the radiation of electromagnetic energy into the user's head and at the same time the efficiency of the antenna arrangement 5, 10 is increased.
  • the connection quality falls below a first, correspondingly predetermined value, for example in that the radio device 1 is positioned with the antenna arrangement 5, 10 in such a clumsy manner that the antenna arrangement 5, 10 shines in the wrong direction for the current connection
  • the controller 85 controls the PIN diode 35 at low level, so that the PIN diode 35 changes to a blocking state and the second radiator element 10 is connected at its base point 150 with high resistance to the reference potential 80.
  • the antenna arrangement 5, 10 acts as an omnidirectional radiation pattern, so that the radiation power according to FIG. 6 is approximately the same for all directions and a directional diagram with omnidirectional radiation characteristic 20 results according to FIG.
  • the antenna arrangement 5, 10 has the advantage the positive ones automatically in favorable reception situations Using the properties of a directional antenna with special high directivity in a preferred direction. Should the Directional spotlights but clumsily positioned to Example if the radio 1 is on a table and in this radiates in, the radio 1 the wrong way round in the Bag is carried and in the user's body shines, or the like, so will automatically Falling below that specified for the connection quality Upgrade the antenna arrangement 5, 10 Omnidirectional characteristic switched.
  • Switching the impedance of the PIN diode 35 between conductive and blocking state or a switchover of Radiation characteristic of the antenna arrangement 5, 10 between directional and omnidirectional radiation pattern can also by means of the control element 40 on the part of User done so that the current Radiation characteristic of the antenna arrangement 5, 10 its Can adapt to needs.
  • the effect of the second radiator element 10 in the Antenna arrangement 5, 10 depends on the impedance between the Base 150 of the second radiator element 10 and the Reference potential 80, from the geometric dimensions of the second radiator element 10 compared to the geometric dimensions of the first radiator element 5 and depends on the operating frequency used. If you use the for the GSM standard (Global System for Mobile Communications) provided operating frequency range about 0.9 to 1.0 GHz and chooses a height 105 of the second Radiator element 10, which is slightly smaller than the height 95 of the first radiator element 5 is, for the GSM operating frequency range is also an effect of second radiator element 10 as a reflector if the Impedance between the base 150 of the second Radiator element 10 and the reference potential 80 low is, that is, the PIN diode 35 conducts. In this case it works the antenna arrangement 5, 10 also as a directional radiator Directional radiation pattern from the hearing device 45 path.
  • GSM Global System for Mobile Communications
  • FIG 2 shows a further embodiment for a Radio 1 with an antenna arrangement 5 according to the invention, 10.
  • the radio device according to the invention shown in Figure 2 is there constructed the same as the radio 1 according to Figure 1 and has only the difference is that the first fed Radiator element 5 now the first side surface 50 and that second lamp element 10 of the second not supplied Side surface 55 is facing.
  • the required height 105 of the second radiator element 10 is slightly larger than which is still a quarter of the operating wavelength corresponding height 95 of the first radiator element 5 choose so that in this case the second radiator element 10 acts as a director and one away from the hearing device 45 directed radiation pattern is realized.
  • the first radiator element 5 and the second radiator element 10 rod-shaped.
  • the height 95, 100, 105 des respective radiator element 5, 10 is the height of the arranged above the reference potential surface 25 in each case Staff.
  • FIG. 3 is in a with respect to the representation of Figure 1 or FIG. 2 a side view rotated by 90 ° Embodiment shown in which the first Radiator element 5 and the second radiator element 10 F-shaped are trained.
  • a first crossbar 60 of the first Radiator element 5 and a first crossbar 65 of the second Radiator element 10 is in each case with the Reference potential 80 connected.
  • Feeding the first Radiator element 5 is carried out via a second crossbar 70 of the first radiator element 5.
  • the second crossbar 70 of the first radiator element 5 is about Antenna network 30 connected to the controller 85 to which the input unit 90 is connected to the control element 40 is.
  • To the antenna network 30 is in turn the Speakers trained hearing device 45 connected, the speaker 45 arranged in an earpiece can be.
  • a second crossbar 75 of the second Radiator element 10 is at its base point 150 to the anode the PIN diode 35 connected, also by the controller 85 is controlled.
  • the cathode of the PIN diode 35 is with connected to the reference potential 80.
  • a longitudinal beam 115 of the first radiator element 5 runs perpendicular to it two crossbars 60, 70, starting with the first crossbar 60, the ends facing away from the reference potential surface 25 connecting these two crossbeams 60, 70 to one another.
  • a longitudinal beam 120 connects the two in the same way Crossbar 65, 75 of the second radiator element 10. Instead the longitudinal beams 115, 120 can accordingly areal longitudinal elements are used.
  • the second crossbar 75 of the second Radiator element 10 at its base 150 via the PIN diode 35 high-resistance or low-resistance with the reference potential 80 are connected.
  • the resonance of the first Radiator element 5 and the second radiator element 10 is no longer determined solely by the height 95, 100, 105 of the respective radiator element 5, 10, but also by the Distance of the first crossbar 60 of the first Radiator element 5 from the second crossbar 70 of the first Radiator element 5 or by the distance of the first Crossbar 65 of the second radiator element 10 from the second Crossbar 75 of the second radiator element 10 and through Length of the longitudinal beam 115, 120 of the respective Radiator element 5, 10 determined, that is, through the entire geometric dimensions of the first radiator element 5 or the second radiator element 10.
  • the geometric dimensions of the first radiator element 5 so chosen that a at the operating frequency used Sets resonance.
  • the geometric dimensions of the second radiator element 10 are, however, compared to geometric dimensions of the first radiator element 5 so changed that for the resonance of the second Radiator element 10 a slight deviation from the Resonance of the first radiator element 5 results and that second radiator element 10 thus depending on the selected Operating frequency as a reflector or director at each low-resistance connection of base 150 of its second Crossbar 75 with the reference potential 80 in the Antenna arrangement 5, 10 can act.
  • the PIN diode 35 is in the conductive state and is the height 100 of the second radiator element 10 for one Operating frequency range from about 1.8 to 1.9 GHz slightly greater than the height 95 of the first radiator element 5, so the second radiator element 10 acts as a reflector and it the first radiator element 5 results in a directional one Radiation characteristic to the second radiator element 10 opposite direction.
  • the hearing device 45 should be at the point of Radio 1 may be arranged, which is directed Radiation characteristic of the antenna arrangement 5, 10 die has the least directivity to the radiation in the Keep the user's head as low as possible.
  • the antenna arrangement 5 acts, 10 as omnidirectional omnidirectional Radiation pattern.
  • FIG 4 is a flow chart for the operation of the Control 85 of the radio 1 with the invention Antenna arrangement 5, 10 shown.
  • the controller 85 controls the PIN diode 35 with a high level signal so that the PIN diode 35 conducts and the second radiator element 10 at its base point 150 is connected to the reference potential 80 with low resistance and the Antenna arrangement 5, 10 a directional Has radiation characteristics.
  • Program item 205 branches.
  • program point 205 checked whether the connection quality under the first according to the specified value and by appropriate Presetting or entering the user on the Input unit 90 allows an omnidirectional characteristic is. If this is the case, then a program point 210 branches, otherwise program point 220 branches.
  • At program point 220 it is checked whether at the Input unit 90 by means of control element 40 Input has been made. If this is the case, it becomes one Program point 225 branches, otherwise it becomes Program point 200 branched back. At program point 225 it is checked whether the actuation of the control element 40 a directional radiation pattern chosen by the user has been. If this is the case, then program point 200 it branches back to program point 230 otherwise branches. At program point 230 it is checked whether that Radio 1 was turned off. If this is the case, then leave the program part. Otherwise, the user an omnidirectional by means of the control element 40 Beam pattern selected and for program item 210 branches.
  • the controller 85 controls at program point 210 the PIN diode 35 with a low level signal, so that the PIN diode 35 goes into the blocking state and the Antenna arrangement 5, 10 an omnidirectional Has radiation characteristics. Then becomes one Program item 215 branches. At program point 215 checked whether the connection quality over a second predetermined value, which is preferably above the first predetermined value is too frequent and unnecessary Avoid switching the PIN diode 35. Is that the case, the program branches back to program point 200 and on directional radiation pattern switched. Otherwise is branched back to program point 210 and the Antenna arrangement 5, 10 continues with omnidirectional Radiation characteristics operated.
  • each switchable very high impedance or very low-resistance at its base with the reference potential 80 are connectable. With a low-impedance connection the not fed radiator elements at their base with the An antenna arrangement can be used with reference potential 80 realize correspondingly improved directivity.
  • a PIN diode 35 instead of a PIN diode 35, a conventional pn diode, a transistor, or some other very low-impedance or very high-impedance switchable impedance be provided.
  • the necessary for the detuning of the resonance of the second radiator element 10 with respect to the resonance of the first radiator element 5 required height difference two radiator elements 5, 10 is of the order of magnitude one-eighth of the operating wavelength.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)
  • Waveguide Aerials (AREA)
EP19990102339 1998-05-23 1999-02-06 Agencement d' antenne et radiotéléphone Expired - Lifetime EP0959525B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998123126 DE19823126B4 (de) 1998-05-23 1998-05-23 Funkgerät
DE19823126 1998-05-23

Publications (3)

Publication Number Publication Date
EP0959525A2 true EP0959525A2 (fr) 1999-11-24
EP0959525A3 EP0959525A3 (fr) 2001-04-04
EP0959525B1 EP0959525B1 (fr) 2009-05-13

Family

ID=7868738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990102339 Expired - Lifetime EP0959525B1 (fr) 1998-05-23 1999-02-06 Agencement d' antenne et radiotéléphone

Country Status (3)

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EP (1) EP0959525B1 (fr)
DE (2) DE19823126B4 (fr)
ES (1) ES2324747T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2797136A1 (fr) * 1999-07-02 2001-02-02 Ninebell United Technology Co Dispositif de protection contre le rayonnement electromagnetique d'un telephone mobile
EP1109247A1 (fr) * 1999-12-17 2001-06-20 Siemens Aktiengesellschaft Téléphone mobile et procédé de commande de rayons émis vers le corps d'un utilisateur
EP1206001A1 (fr) * 2000-11-14 2002-05-15 Northrop Grumman Corporation Antenne réseau pour un téléphone cellulaire
WO2004013935A1 (fr) * 2002-08-01 2004-02-12 Koninklijke Philips Electronics N.V. Agencement d'antennes directionnelles a double frequence
EP1618752A4 (fr) * 2003-04-25 2006-05-24 Motorola Inc Dispositif de communication sans fil dote d'un diagramme de rayonnement d'antenne variable et procede correspondant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725938A (en) 1970-10-05 1973-04-03 Sperry Rand Corp Direction finder system
US4700197A (en) 1984-07-02 1987-10-13 Canadian Patents & Development Ltd. Adaptive array antenna
JPH1075192A (ja) 1996-08-30 1998-03-17 Matsushita Electric Ind Co Ltd アンテナ装置
DE19723331A1 (de) 1997-06-04 1998-12-10 Bosch Gmbh Robert Funkgerät

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT393054B (de) * 1989-07-27 1991-08-12 Siemens Ag Oesterreich Sende- und/oder empfangsanordnung fuer tragbare geraete
ATE250809T1 (de) * 1993-05-27 2003-10-15 Univ Griffith Antennen für tragbare kommunikationsgeräte
DE4334439A1 (de) * 1993-10-09 1995-04-13 Philips Patentverwaltung Funkgerät mit einer Antenne

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725938A (en) 1970-10-05 1973-04-03 Sperry Rand Corp Direction finder system
US4700197A (en) 1984-07-02 1987-10-13 Canadian Patents & Development Ltd. Adaptive array antenna
JPH1075192A (ja) 1996-08-30 1998-03-17 Matsushita Electric Ind Co Ltd アンテナ装置
DE19723331A1 (de) 1997-06-04 1998-12-10 Bosch Gmbh Robert Funkgerät

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2797136A1 (fr) * 1999-07-02 2001-02-02 Ninebell United Technology Co Dispositif de protection contre le rayonnement electromagnetique d'un telephone mobile
EP1109247A1 (fr) * 1999-12-17 2001-06-20 Siemens Aktiengesellschaft Téléphone mobile et procédé de commande de rayons émis vers le corps d'un utilisateur
EP1206001A1 (fr) * 2000-11-14 2002-05-15 Northrop Grumman Corporation Antenne réseau pour un téléphone cellulaire
US6437746B1 (en) 2000-11-14 2002-08-20 Northrop Grumman Corp Cellular telephone antenna array
WO2004013935A1 (fr) * 2002-08-01 2004-02-12 Koninklijke Philips Electronics N.V. Agencement d'antennes directionnelles a double frequence
EP1618752A4 (fr) * 2003-04-25 2006-05-24 Motorola Inc Dispositif de communication sans fil dote d'un diagramme de rayonnement d'antenne variable et procede correspondant

Also Published As

Publication number Publication date
EP0959525A3 (fr) 2001-04-04
DE19823126B4 (de) 2012-08-23
EP0959525B1 (fr) 2009-05-13
DE59915023D1 (de) 2009-06-25
ES2324747T3 (es) 2009-08-13
DE19823126A1 (de) 1999-11-25

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