公开(公告)号：AU6232698A

公开(公告)日：1998-09-08

申请号：AU6232698

申请日：1998-01-30

Applicant: ERICSSON TELEFON AB L M

Inventor： SANDSTEDT JONAS ,  SNYGG GORAN ,  JOHANNISSON BJORN

IPC: H01Q1/24 ,  H01Q1/38 ,  H01Q21/24

公开(公告)号：AU6092001A

公开(公告)日：2001-12-03

申请号：AU6092001

申请日：2001-05-22

Applicant: ERICSSON TELEFON AB L M

Inventor： SNYGG GORAN ,  SKATT GUNNAR ,  BOLANDER LARS ,  JOHANSSON MIKAEL ,  HOGBERG MATS

IPC: H05K9/00

Abstract: The invention relates to a cover ( 200,300,400,500,600 ) for an electronic device ( 100 ), which electronic device comprises a substrate ( 110 ) and at least two electronic components ( 120,130 ), one of which generates an electromagnetic field around itself, where the cover has a first main surface ( 210 ) that faces towards the electronic device, comprises a material that conducts current, and is designed and arranged in such a way in relation to the electronic components that a cooling medium can pass from the first ( 120 ) to the second ( 130 ) electronic component. The invention is characterized in that, by virtue of its shape and its material content, the cover has been given an increased ability to absorb at least part of the electromagnetic field that is generated by at least one of the electronic components. Part of the increased absorbing ability has been achieved by the first main surface of the cover having a shape that minimizes the number of parallel surfaces between the electronic device and the first main surface. The cover can suitably have a number of conical protrusions protruding in the direction towards the electronic components ( 120,130 ).

公开(公告)号：AU7326600A

公开(公告)日：2001-04-10

申请号：AU7326600

申请日：2000-09-05

Applicant: ERICSSON TELEFON AB L M

Inventor： SVENSSON BENGT ,  SNYGG GORAN ,  WIKGREN EMIL ,  MANHOLM LARS ,  HOLMBERG PER

IPC: H01Q13/10 ,  H01Q19/10 ,  H01Q21/00 ,  H01Q21/06 ,  H01Q21/08

Abstract: The invention relates to a distribution network for electromagnetic signals, preferably for use in an antenna arrangement in the microwave range, comprising at least two waveguide branches, in which branches the electromagnetic signals propagate in different directions in relation to one another. The invention is characterized in that the at least two waveguide branches overlap one another at one point in the distribution network. The waveguide branches in the distribution network which overlap one another are preferably neighboring branches and have at lease one aperture in the part of the branch which overlaps the other branch.

公开(公告)号：AU6042400A

公开(公告)日：2001-01-30

申请号：AU6042400

申请日：2000-07-05

Applicant: ERICSSON TELEFON AB L M

Inventor： SNYGG GORAN ,  JOHANSSON SUNE ,  SVENSSON BENGT

IPC: H01Q1/24 ,  H01Q21/00 ,  H01Q21/24 ,  H01Q25/04

Abstract: The invention provides an arrangement for use in an antenna array for transmitting and receiving at at least one frequency in at least two polarizations, comprising at least two antenna elements (210-208), where each antenna element is intended for one of the two polarizations, the antenna elements being arranged on a feeding structure (100, 320, 420) which conducts electrical signals to and from the antenna elements (201-208). The invention is characterized in that the feeding structure (100, 320, 420) comprises a number of waveguides (101) dimensioned for the said at least one frequency, in that the different waveguides are used for feeding the antenna elements (201-208) intended for different polarization, and in that the waveguides (101) are completely or partially filled with a material, the dielectric constant of which is higher than that of air, whereby an antenna array with small or negligible grating lobes can be obtained.The antenna elements (201-208) and the feeding structure (100, 320) are suitably arranged each on a separate plate (200, 310, 410) and in the feeding plate (100, 320, 420), a number of continuous recesses (101) are arranged which are constructed to operate as waveguides at the said at least one frequency.

公开(公告)号：AU1592502A

公开(公告)日：2002-04-22

申请号：AU1592502

申请日：2001-10-06

Applicant: ERICSSON TELEFON AB L M

Inventor： CARLSSON ERIK ,  SNYGG GORAN

IPC: H04B7/26 ,  H04B7/00

Abstract: The invention relates to a method for utilizing the available bandwidth in a wireless communication system that comprises a first (ANB) and a second (C/D) communication device intended to transmit information to each other, where each device (A/B; C/D) simultaneously can transmit on a first frequency and receive on a second frequency. Based on the need of the respective devices to transmit information within a particular interval of time, the said interval of time is divided up into a number of sub-intervals, the first device simultaneously transmitting on both the first and the second frequencies within a number of the said sub-intervals, and the second device simultaneously receiving on both the first and the second frequencies during these sub-intervals. The invention also relates to devices and modules intended to be incorporated in such a system.

公开(公告)号：AU6094401A

公开(公告)日：2001-12-11

申请号：AU6094401

申请日：2001-05-29

Applicant: ERICSSON TELEFON AB L M

Inventor： SNYGG GORAN ,  CARLSSON ERIK

IPC: H04B1/10

Abstract: The invention relates to a system (500) for radio communication in the microwave range, comprising a transmitting device and a receiving device, said transmitting device comprising a transmitter (530), an antenna (510'), a filter (520') with variable filter characteristics, and a device (550') for controlling the variable filter (520'), and said receiving device comprising a receiver (540), an antenna (510), a filter (520) with variable filter characteristics, and a device (550) for controlling the variable filter (520). The filters (520, 520') are arranged between the antenna and the transmitter, and the antenna and the receiver, respectively, the filters have variable filter characteristics, and said devices (550, 550') for controlling the respective filters are responsive to control signals from an external source, whereby the frequency range at which the respective device and thereby the whole system (500) operates can be controlled during operation.

公开(公告)号：AU5888999A

公开(公告)日：2000-03-21

申请号：AU5888999

申请日：1999-08-11

Applicant: ERICSSON TELEFON AB L M

Inventor： SNYGG GORAN

IPC: H01Q21/30 ,  H01Q1/24 ,  H01Q5/00 ,  H01Q9/40 ,  H01Q13/08 ,  H01Q21/24 ,  H01Q21/28

Abstract: An antenna arrangement for multi frequency band operation makes it possible to reduce the number of antennae on a base station antenna mast. The antenna includes a first radiator element for operation in a first frequency band and a second radiator element for operation in a second frequency band. The second element is arranged in a different plane from said first element. The first element is placed so that it symmetrically overlaps the second element. A conductive ground plane is provided with a device for feeding energy to the radiator elements, and the radiator elements are arranged for providing dual polarization. An array antenna includes groups of high and low frequency elements.

公开(公告)号：AU4538999A

公开(公告)日：1999-11-29

申请号：AU4538999

申请日：1999-05-11

Applicant: ERICSSON TELEFON AB L M

Inventor： SVENSSON BENGT-INGE ,  SNYGG GORAN ,  JOHANSSON SUNE

IPC: H01Q13/10 ,  H01Q21/00

公开(公告)号：AU6193800A

公开(公告)日：2001-01-30

申请号：AU6193800

申请日：2000-07-08

Applicant: ERICSSON TELEFON AB L M

Inventor： SNYGG GORAN ,  JOHANSSON SUNE ,  SVENSSON BENGT

IPC: H01P11/00 ,  H01P1/205

Abstract: The invention relates to a method for producing a microwave filter (700), comprising making at least one through-cutout (750) in a first electrically conductive plate (740) shaped as a rectangle, with a short side and a long side, inserting the first plate (740) between a second (710) and a third (730) electrically conductive plate (710), the first plate being arranged parallel to the second and the third plate, making electrical connections (794, 795) between said three plates for interconnecting those edge surfaces on the plates which coincide with the direction of propagation of the electrical signals, as a result of which a space comprising one or more cavities is formed. The first plate (740) is arranged so that the extent of its short side coincides with the E-field of the microwave signals when they propagate in the filter (700), and the extent of its long side coincides with the direction of propagation of the electrical signals.

公开(公告)号：AU7461298A

公开(公告)日：1998-11-27

申请号：AU7461298

申请日：1998-05-05

Applicant: ERICSSON TELEFON AB L M

Inventor： SNYGG GORAN ,  SANDSTEDT JONAS

IPC: H01Q1/24 ,  H01Q1/38 ,  H01Q9/04 ,  H01Q21/08

Abstract: A device for antennas, in particular dual-polarized microwave antennas with single-polarized patches, for which antennas reduced cross-polarization and reduced cross-coupling can be achieved without impairing the bandwidth of the antenna or increasing the occurrence of grating lobes. A modification of the traditionally rectangular geometry of the single-polarized patches is carried out. The modification is symmetrical in relation to the plane in which the linear-polarized signal lies for the respective patch. The modification involves the patches narrowing towards the ends along the respective polarization axis in such a manner that side edges which face side edges of adjacent patches are formed. In this way, the coupling between adjacent patches and also the cross-polarization in the respective patch are reduced.