公开(公告)号：CA1141012A

公开(公告)日：1983-02-08

申请号：CA339226

申请日：1979-11-06

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： BIELLI PAOLO ,  DE PADOVA SALVATORE ,  SAVINI DARIO

IPC: G01S3/42 ,  G01S3/14 ,  H01Q20060101 ,  H01Q25/04

Abstract: In a tracking system for radio beacons using generation of TE21 mode components in a circular waveguide to detect misalignment, correct antenna alignment is achieved even where the signal from the beacon is linearly polarized by extracting TE21 mode signals from the waveguide through longitudinal pairs of slots in planes at an angle .pi./4 to one another, phase detecting the difference signals from said pairs of slots to provide signals for aligning the antenna on two orthogonal axes, and in the case of linear polarization rotating the slots about the waveguide axis so as to correspond with the rotation required of a 180.degree. polarizer receiving the waveguide signal through a 90.degree. polarizer so as to provide a predetermined polarization of the output signal.

公开(公告)号：DE68917548T2

公开(公告)日：1995-01-05

申请号：DE68917548

申请日：1989-09-01

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： FIGLIA GIUSEPPE ,  FORIGO DAVIDE ,  MERCURIO FLAVIO ,  SAVINI DARIO

IPC: H01P1/161 ,  H01P1/165 ,  H01P1/18

Abstract: The coaxial-waveguide phase shifter consists of a coaxial waveguide section, comprising an external cylindrical conductor (CE) and an internal cylindrical conductor (CI), both hollow; thereinbetween a certain number of irises (I) parallel to one another is inserted. The irises can be differently shaped and can be fixed to the external or to the internal conductor. By replacing the internal cylindrical conductor with a rectangular conductor, the irises can be unnecessary.

公开(公告)号：DE2965529D1

公开(公告)日：1983-07-07

申请号：DE2965529

申请日：1979-11-05

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： BIELLI PAOLO ,  SAVINI DARIO ,  DE PADOVA SALVATORE

IPC: G01S3/42 ,  G01S3/14 ,  H01Q20060101 ,  H01Q25/04

Abstract: A tracking system is for a satellite emitting microwave signals from a beacon. The signals are circularly or linearly polarised. A ground antenna passes a signal received to a circular waveguide propagating the higher order TE21 mode. Two pairs of longitudinal slots (A, A'; B, B') on two planes passing through the waveguide axis which planes are angularly spaced from each other by pi/4 radians. The signals of each pair of slots are subtracted. The resulting difference signals are processed to provide signals representing the satellite position in a system of Cartesian coordinates (x, y, z). The angle (theta) which the reference plane containing two axes (x, z) of the system defines with that plane through a first pair of slots (A, A') is caused to equal half the angle defined between the plane of polarisation of the satellite signal and the reference plane, for a linearly-polarised signal.

公开(公告)号：CA1318370C

公开(公告)日：1993-05-25

申请号：CA609819

申请日：1989-08-30

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： FIGLIA GIUSEPPE ,  FORIGO DAVIDE ,  MERCURIO FLAVIO ,  SAVINI DARIO

IPC: H01P1/161 ,  H01P1/165 ,  H01P1/18

Abstract: A coaxial waveguide phase shifter consists of a coaxial waveguide section, comprising an external hollow cylindrical conductor and an internal hollow concentric conductor, and an elongated parallel iris structures extending between the conductors. The inner conductor may be cylindrical and the iris structure formed by multiple-spaced parallel irises which may be differently shaped and fixed to the external or to the internal conductor. By making the cross-section of the internal conductor rectangular, the iris structure may be provided by external surfaces of the conductor.

公开(公告)号：IT1223796B

公开(公告)日：1990-09-29

申请号：IT6778788

申请日：1988-09-02

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： FIGLIA GIUSEPPE ,  FORIGO DAVIDE ,  MERCURIO FLAVIO ,  SAVINI DARIO

IPC: H01P1/161 ,  H01P1/165 ,  H01P1/18 ,  H01P

Abstract: The coaxial-waveguide phase shifter consists of a coaxial waveguide section, comprising an external cylindrical conductor (CE) and an internal cylindrical conductor (CI), both hollow; thereinbetween a certain number of irises (I) parallel to one another is inserted. The irises can be differently shaped and can be fixed to the external or to the internal conductor. By replacing the internal cylindrical conductor with a rectangular conductor, the irises can be unnecessary.

公开(公告)号：IT1160916B

公开(公告)日：1987-03-11

申请号：IT6954078

申请日：1978-11-06

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： BIELLI PAOLO ,  PADOVA SALVATORE ,  SAVINI DARIO

IPC: G01S3/42 ,  G01S3/14 ,  H01Q20060101 ,  H01Q25/04 ,  H01Q

Abstract: A tracking system is for a satellite emitting microwave signals from a beacon. The signals are circularly or linearly polarised. A ground antenna passes a signal received to a circular waveguide propagating the higher order TE21 mode. Two pairs of longitudinal slots (A, A'; B, B') on two planes passing through the waveguide axis which planes are angularly spaced from each other by pi/4 radians. The signals of each pair of slots are subtracted. The resulting difference signals are processed to provide signals representing the satellite position in a system of Cartesian coordinates (x, y, z). The angle (theta) which the reference plane containing two axes (x, z) of the system defines with that plane through a first pair of slots (A, A') is caused to equal half the angle defined between the plane of polarisation of the satellite signal and the reference plane, for a linearly-polarised signal.

公开(公告)号：DE68917548D1

公开(公告)日：1994-09-22

申请号：DE68917548

申请日：1989-09-01

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： FIGLIA GIUSEPPE ,  FORIGO DAVIDE ,  MERCURIO FLAVIO ,  SAVINI DARIO

IPC: H01P1/161 ,  H01P1/165 ,  H01P1/18

Abstract: The coaxial-waveguide phase shifter consists of a coaxial waveguide section, comprising an external cylindrical conductor (CE) and an internal cylindrical conductor (CI), both hollow; thereinbetween a certain number of irises (I) parallel to one another is inserted. The irises can be differently shaped and can be fixed to the external or to the internal conductor. By replacing the internal cylindrical conductor with a rectangular conductor, the irises can be unnecessary.

公开(公告)号：IT8867787D0

公开(公告)日：1988-09-02

申请号：IT6778788

申请日：1988-09-02

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： FORIGO GIUSEPPE FIGLIA DAVIDE ,  MERCURIO FLAVIO ,  SAVINI DARIO

IPC: H01P1/161 ,  H01P1/165 ,  H01P1/18

Abstract: The coaxial-waveguide phase shifter consists of a coaxial waveguide section, comprising an external cylindrical conductor (CE) and an internal cylindrical conductor (CI), both hollow; thereinbetween a certain number of irises (I) parallel to one another is inserted. The irises can be differently shaped and can be fixed to the external or to the internal conductor. By replacing the internal cylindrical conductor with a rectangular conductor, the irises can be unnecessary.