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WO2000076024A1 - Antenna module - Google Patents

Antenna module Download PDF

Info

Publication number
WO2000076024A1
WO2000076024A1 PCT/NL2000/000394 NL0000394W WO0076024A1 WO 2000076024 A1 WO2000076024 A1 WO 2000076024A1 NL 0000394 W NL0000394 W NL 0000394W WO 0076024 A1 WO0076024 A1 WO 0076024A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
antenna module
extruded section
units
longitudinal direction
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.)
Ceased
Application number
PCT/NL2000/000394
Other languages
French (fr)
Inventor
Hendricus Leonards Maria Van Der Mast
Johannes Hendricus Witte
Lucas Johannes Cornelis Kouters
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.)
LIBERTEL NETWERK BV
Original Assignee
LIBERTEL NETWERK BV
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 LIBERTEL NETWERK BV filed Critical LIBERTEL NETWERK BV
Priority to AU54324/00A priority Critical patent/AU5432400A/en
Priority to EP00939198A priority patent/EP1103084A1/en
Publication of WO2000076024A1 publication Critical patent/WO2000076024A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • 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
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0087—Apparatus or processes specially adapted for manufacturing antenna arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/065—Patch antenna array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path

Definitions

  • the invention relates to an antenna module for mobile telephony comprising a plurality of antenna units arranged so as to be shifted relative to each other in a longitudinal direction of the antenna module.
  • Such antenna module is known per se.
  • complex constructions are used, utilizing different parts to give the antenna module a supporting structure having a sufficient required stiffness, respectively to provide the antenna module with the required reflectors, to provide space in which cabling and the antenna units of the antenna module can be included, and to provide fastening points on which radomes and other closing caps of the antenna module can be mounted.
  • the object of the invention is to provide an antenna module which is on the one hand simple of design and which on the other hand can provide the above-mentioned functions. Accordingly, the antenna module according to the invention is characterized in that the antenna module is provided with an extruded section comprising a tubular base body whose longitudinal direction extends in the longitudinal direction of the antenna module, the antenna units being mounted on an outer side of the extruded section.
  • the extruded section constructed from, for instance, aluminum, has the advantage that it can perform each of the above-mentioned functions.
  • a further advantage of the extruded section is that it can be manufactured in an economically highly advantageous manner.
  • a portion of an outer side of the base body comprises an at least substantially flat surface functioning as a reflector which, in use, reflects radio signals from and/or to the antenna units.
  • the antenna module further comprises a radome which, together with the extruded section, constitutes a housing in which the antenna units are accommodated.
  • FIG. 1 shows a possible embodiment of an antenna device according to the invention
  • Fig. 2 is a cross section of an antenna device according to Fig. 1;
  • Fig. 3 shows a part of an antenna device according to Fig. 1; and Fig. 4 shows a second embodiment of an antenna device according to the invention.
  • reference numeral 1 designates an antenna device for mobile telephony.
  • the antenna device comprises an antenna mast 2 and an elongated antenna module 4 whose longitudinal direction extends at least substantially in an axial direction of the antenna mast 2.
  • the antenna module 4 is of curved design (see Fig. 1) and in view of a setting possibility of the elevation of the antenna, with setting possibility is to be described in more detail hereinbelow, the longitudinal direction of the antenna module will generally not be entirely parallel to the axial axis of the antenna mast. Both directions are indicated in the Figure by arrows 6 and 8 respectively.
  • the antenna module 4 is connected to the antenna mast 2 for rotation through a limited angle about a horizontal axis of rotation 10.
  • the antenna device 1 further comprises an adjusting mechanism 12 for setting an angle ⁇ enclosed by the axial axis of the antenna mast in the longitudinal direction of the antenna module (see also the angle ⁇ enclosed by arrows 6 and 8).
  • the adjusting mechanism 12 is located adjacent a bottom side 14 of the antenna module 4.
  • the axis of rotation 10 is located above the adjusting mechanism 12.
  • the angle ⁇ can be varied.
  • the angle ⁇ will be set so that the gain of the antenna indicated by the arrow 16 in Fig. 1 is directed slightly obliquely downwards.
  • the arrow 16 extends at least substantially parallel to the horizon, so that the angle ⁇ will generally have to be increased by setting. Because the adjusting mechanism 12 is located adjacent the bottom side 14 of the antenna module 4, it can be operated by a person without generally requiring the use of a ladder.
  • the adjusting mechanism 12 comprises a scissor-shaped bracket, a first end 16 of which is connected to the antenna mast and a second end 18 of which is connected to the antenna module 4.
  • the antenna module 4 comprises an extruded section 20, hatched in Fig. 2.
  • the section 20 is manufactured from aluminum.
  • the extruded section 20 comprises- a tubular base body 22 whose longitudinal direction extends in the longitudinal direction of the antenna module.
  • the antenna module comprises a number of antenna units 24.
  • a cross section of a single antenna module 24 is shown in Fig. 3.
  • the antenna units 24 are mounted on an outer side of the extruded section.
  • the extruded section 20 is connected to the antenna mast 2 for rotation about the horizontal axis of rotation 10.
  • the antenna mast comprises two brackets 26 to which the antenna module is rotatably connected.
  • Said adjusting mechanism 12 is connected to the extruded section as well. Hence, in this example, it applies that the free end 18 of the bracket 16 is connected to the extruded section.
  • a plurality of antenna units are connected to the extruded section 20 so as to be shifted relative to each other in the longitudinal direction 6 of the antenna module.
  • a portion 27 of an outer side of a base body has an at least substantially flat surface functioning as a reflector which, in use, reflects radio signals from or to the antenna units 24. This involves the presence of an interspace 29 between the antenna units 24 and said outer side 27 of the base body 22 which outer side functions as reflector.
  • the extruded section 20 further comprises two support arms 28, each extending from the surface 27, functioning as reflector, in a direction away from the surface.
  • the antenna units 24 are included between these support arms and connected to these support arms, while each of the antenna units 24 is connected to the support arms 28 for rotation about a horizontal axis of rotation 30. Hence, for each of the antenna units 24, the rotation about the axis of rotation 30 associated with the relevant antenna unit 24 can be set. Generally, the antenna units 24 will be set in combination to form a phased-array antenna.
  • the extruded section 20 has as an advantage that it performs several functions.
  • the extruded section 20 provides the antenna module with the required stiffness. Further, the extruded section provides the rotatable suspension about the axis of rotation 10. In addition, the extruded section provides said reflector surface 27. Also, the adjusting mechanism 16 can engage the extruded section 20. Finally, the extruded section carries the various antenna units 24.
  • the antenna module further comprises a radome 32 which, together with the extruded section 20, forms a housing which encloses a space 34, in which the antenna units 24 are accommodated.
  • the radome is connected to the support arms adjacent free ends 36 of the support arms 28.
  • the antenna module further comprises a cap 38 of a U-shaped cross section.
  • the extruded section 20 is located between the cap 38 and the radome 32. By the cap 38 and the extruded section 20, a space 40 is enclosed, in which wiring 42 for the antenna modules 24 can be included. This wiring is also shown in Fig. 1. As appears from Fig. 1, the cap 38 does not extend throughout the length of the antenna module.
  • the antenna device may also comprise two or more elongated antenna modules. Such situation is shown in Fig. 4. Each of the two antenna modules 4, 4' shown in Fig. 4 are connected to the antenna mast 2 for rotation about a horizontal axis of rotation 10 and 10' respectively. Such variants are also understood to fall within the framework of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

The invention relates to an antenna module for mobile telephony. The antenna module comprises a plurality of antenna units arranged so as to be shifted relative to each other in a longitudinal direction of the antenna module. With such antenna, a phased-array antenna can be formed. The antenna module is provided with an extruded section, in this example made of aluminum, comprising a tubular base body whose longitudinal direction extends in the longitudinal direction of the antenna module. The antenna units are mounted on the outer side of the extruded section.

Description

Title: Antenna module
The invention relates to an antenna module for mobile telephony comprising a plurality of antenna units arranged so as to be shifted relative to each other in a longitudinal direction of the antenna module.
Such antenna module is known per se. In the known module, complex constructions are used, utilizing different parts to give the antenna module a supporting structure having a sufficient required stiffness, respectively to provide the antenna module with the required reflectors, to provide space in which cabling and the antenna units of the antenna module can be included, and to provide fastening points on which radomes and other closing caps of the antenna module can be mounted.
The object of the invention is to provide an antenna module which is on the one hand simple of design and which on the other hand can provide the above-mentioned functions. Accordingly, the antenna module according to the invention is characterized in that the antenna module is provided with an extruded section comprising a tubular base body whose longitudinal direction extends in the longitudinal direction of the antenna module, the antenna units being mounted on an outer side of the extruded section.
The extruded section, constructed from, for instance, aluminum, has the advantage that it can perform each of the above-mentioned functions. A further advantage of the extruded section is that it can be manufactured in an economically highly advantageous manner.
In particular, it applies that a portion of an outer side of the base body comprises an at least substantially flat surface functioning as a reflector which, in use, reflects radio signals from and/or to the antenna units. Further, it preferably applies that the antenna module further comprises a radome which, together with the extruded section, constitutes a housing in which the antenna units are accommodated.
The invention will now be explained in more detail with reference to the accompanying drawings. In these drawings: Fig. 1 shows a possible embodiment of an antenna device according to the invention;
Fig. 2 is a cross section of an antenna device according to Fig. 1;
Fig. 3 shows a part of an antenna device according to Fig. 1; and Fig. 4 shows a second embodiment of an antenna device according to the invention.
In Fig. 1, reference numeral 1 designates an antenna device for mobile telephony. The antenna device comprises an antenna mast 2 and an elongated antenna module 4 whose longitudinal direction extends at least substantially in an axial direction of the antenna mast 2. Because the antenna module 4 is of curved design (see Fig. 1) and in view of a setting possibility of the elevation of the antenna, with setting possibility is to be described in more detail hereinbelow, the longitudinal direction of the antenna module will generally not be entirely parallel to the axial axis of the antenna mast. Both directions are indicated in the Figure by arrows 6 and 8 respectively.
The antenna module 4 is connected to the antenna mast 2 for rotation through a limited angle about a horizontal axis of rotation 10.
The antenna device 1 further comprises an adjusting mechanism 12 for setting an angle α enclosed by the axial axis of the antenna mast in the longitudinal direction of the antenna module (see also the angle α enclosed by arrows 6 and 8).
As is clearly visible in Fig. 1, the adjusting mechanism 12 is located adjacent a bottom side 14 of the antenna module 4. The axis of rotation 10 is located above the adjusting mechanism 12. Through operation of the adjusting mechanism 12, the angle α can be varied. Generally, the angle α will be set so that the gain of the antenna indicated by the arrow 16 in Fig. 1 is directed slightly obliquely downwards. In the example as shown in Fig. 1, the arrow 16 extends at least substantially parallel to the horizon, so that the angle α will generally have to be increased by setting. Because the adjusting mechanism 12 is located adjacent the bottom side 14 of the antenna module 4, it can be operated by a person without generally requiring the use of a ladder.
It will be understood that by means of an adjusting mechanism, a distance d between a bottom side 14 of the antenna module and the antenna mast 2 can be varied for setting said enclosed angle α. In this example, the adjusting mechanism 12 comprises a scissor-shaped bracket, a first end 16 of which is connected to the antenna mast and a second end 18 of which is connected to the antenna module 4. As is clearly visible in Fig. 2, the antenna module 4 comprises an extruded section 20, hatched in Fig. 2. In this example, the section 20 is manufactured from aluminum. The extruded section 20 comprises- a tubular base body 22 whose longitudinal direction extends in the longitudinal direction of the antenna module. Further, the antenna module comprises a number of antenna units 24. A cross section of a single antenna module 24 is shown in Fig. 3. The antenna units 24 are mounted on an outer side of the extruded section. The extruded section 20 is connected to the antenna mast 2 for rotation about the horizontal axis of rotation 10. To this end, the antenna mast comprises two brackets 26 to which the antenna module is rotatably connected. Said adjusting mechanism 12 is connected to the extruded section as well. Hence, in this example, it applies that the free end 18 of the bracket 16 is connected to the extruded section.
In this example, a plurality of antenna units are connected to the extruded section 20 so as to be shifted relative to each other in the longitudinal direction 6 of the antenna module. A portion 27 of an outer side of a base body has an at least substantially flat surface functioning as a reflector which, in use, reflects radio signals from or to the antenna units 24. This involves the presence of an interspace 29 between the antenna units 24 and said outer side 27 of the base body 22 which outer side functions as reflector. The extruded section 20 further comprises two support arms 28, each extending from the surface 27, functioning as reflector, in a direction away from the surface. The antenna units 24 are included between these support arms and connected to these support arms, while each of the antenna units 24 is connected to the support arms 28 for rotation about a horizontal axis of rotation 30. Hence, for each of the antenna units 24, the rotation about the axis of rotation 30 associated with the relevant antenna unit 24 can be set. Generally, the antenna units 24 will be set in combination to form a phased-array antenna.
The extruded section 20 has as an advantage that it performs several functions. The extruded section 20 provides the antenna module with the required stiffness. Further, the extruded section provides the rotatable suspension about the axis of rotation 10. In addition, the extruded section provides said reflector surface 27. Also, the adjusting mechanism 16 can engage the extruded section 20. Finally, the extruded section carries the various antenna units 24. The antenna module further comprises a radome 32 which, together with the extruded section 20, forms a housing which encloses a space 34, in which the antenna units 24 are accommodated. The radome is connected to the support arms adjacent free ends 36 of the support arms 28. The antenna module further comprises a cap 38 of a U-shaped cross section. The extruded section 20 is located between the cap 38 and the radome 32. By the cap 38 and the extruded section 20, a space 40 is enclosed, in which wiring 42 for the antenna modules 24 can be included. This wiring is also shown in Fig. 1. As appears from Fig. 1, the cap 38 does not extend throughout the length of the antenna module. The invention is in no way limited to the embodiments outlined in the foregoing. Thus, the antenna device may also comprise two or more elongated antenna modules. Such situation is shown in Fig. 4. Each of the two antenna modules 4, 4' shown in Fig. 4 are connected to the antenna mast 2 for rotation about a horizontal axis of rotation 10 and 10' respectively. Such variants are also understood to fall within the framework of the invention.

Claims

Claims
1. An antenna module for mobile telephony, comprising a plurality of antenna units arranged relative to each other so as to be shifted in a longitudinal direction of the antenna module, characterized in that the antenna module is provided with an extruded section comprising a tubular base body whose longitudinal direction extends in the longitudinal direction of the antenna module, the antenna units being mounted on an outer side of the extruded section.
2. An antenna module according to claim 1, characterized in that a portion of an outer side of the base body comprises an at least substantially flat surface functioning as a reflector which, in use, reflects radio signals from and/or to the antenna units.
3. An antenna module according to claim 2, characterized in that an interspace is present between the antenna units on the one hand and said outer side of the base body, functioning as reflector, on the other.
4. An antenna module according to claim 2 or 3, characterized in that the extruded section further comprises two support arms extending in a direction away from the surface functioning as reflector, the antenna units being included between said support arms and connected to said support arms.
5. An antenna module according to any one of the preceding claims, characterized in that the antenna module further comprises a radome which, together with the extruded section, forms a housing in which the antenna units are accommodated.
6. An antenna module according to claim 5, characterized in that the radome is connected to the support arms adjacent free ends of the support arms.
7. An antenna module according to any one of the preceding claims, characterized in that the antenna module further comprises a cap having a U-shaped cross section, the extruded section being located between the cap and the radome, and the cap and the extruded section enclosing a space in which wiring of the antenna units is included.
8. An antenna module according to any one of the preceding claims, characterized in that the antenna module is designed as a phased-array antenna.
PCT/NL2000/000394 1999-06-09 2000-06-08 Antenna module Ceased WO2000076024A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU54324/00A AU5432400A (en) 1999-06-09 2000-06-08 Antenna module
EP00939198A EP1103084A1 (en) 1999-06-09 2000-06-08 Antenna module

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1012278A NL1012278C2 (en) 1999-06-09 1999-06-09 Antenna module.
NL1012278 1999-06-09

Publications (1)

Publication Number Publication Date
WO2000076024A1 true WO2000076024A1 (en) 2000-12-14

Family

ID=19769343

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2000/000394 Ceased WO2000076024A1 (en) 1999-06-09 2000-06-08 Antenna module

Country Status (4)

Country Link
EP (1) EP1103084A1 (en)
AU (1) AU5432400A (en)
NL (1) NL1012278C2 (en)
WO (1) WO2000076024A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004025784A1 (en) * 2002-09-12 2004-03-25 Radio Components Sweden Ab An antenna system, as well as a method for manufacturing the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552560A1 (en) * 1983-09-23 1985-03-29 Thomson Csf Dispersive array of radiating elements
US4987425A (en) * 1987-11-13 1991-01-22 Dornier System Gmbh Antenna support structure
US5030961A (en) * 1990-04-10 1991-07-09 Ford Aerospace Corporation Microstrip antenna with bent feed board
US5625365A (en) * 1995-03-10 1997-04-29 Trimble Navigation Limited Dual-frequency microwave radio antenna system
US5742258A (en) * 1995-08-22 1998-04-21 Hazeltine Corporation Low intermodulation electromagnetic feed cellular antennas
WO1998057191A1 (en) * 1997-06-11 1998-12-17 Itt Manufacturing Enterprises, Inc. Self calibrating radar system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745412A (en) * 1985-05-10 1988-05-17 Chu Associates, Inc. Lightweight tower assemblies for antennas and the like
NZ235010A (en) * 1990-08-22 1993-12-23 Deltec New Zealand Dipole panel antenna with electrically tiltable beam.
WO1997000221A1 (en) * 1995-06-14 1997-01-03 Abbeydean Limited Device for dispensing nested articles
US5844529A (en) * 1997-04-07 1998-12-01 Electromagnetic Sciences, Inc. Antenna enclosure with a stress-free connection along the length of the radome

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552560A1 (en) * 1983-09-23 1985-03-29 Thomson Csf Dispersive array of radiating elements
US4987425A (en) * 1987-11-13 1991-01-22 Dornier System Gmbh Antenna support structure
US5030961A (en) * 1990-04-10 1991-07-09 Ford Aerospace Corporation Microstrip antenna with bent feed board
US5625365A (en) * 1995-03-10 1997-04-29 Trimble Navigation Limited Dual-frequency microwave radio antenna system
US5742258A (en) * 1995-08-22 1998-04-21 Hazeltine Corporation Low intermodulation electromagnetic feed cellular antennas
WO1998057191A1 (en) * 1997-06-11 1998-12-17 Itt Manufacturing Enterprises, Inc. Self calibrating radar system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1103084A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004025784A1 (en) * 2002-09-12 2004-03-25 Radio Components Sweden Ab An antenna system, as well as a method for manufacturing the same

Also Published As

Publication number Publication date
NL1012278C2 (en) 2000-12-12
EP1103084A1 (en) 2001-05-30
AU5432400A (en) 2000-12-28

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