Global Patent Index - EP 0734093 B1

EP 0734093 B1 2001-05-30 - Feeding device for a multibeam array antenna

Title (en)

Feeding device for a multibeam array antenna

Title (de)

Vorrichtung zur Speisung einer Mehrstrahl-Gruppenantenne

Title (fr)

Dispositif d'alimentation d'une antenne multisources et multifaisceaux

Publication

EP 0734093 B1 (FR)

Application

EP 96400526 A

Priority

FR 9503202 A

Abstract (en)

[origin: EP0734093A1] The antenna feed includes a low level beamformer which divides Nb input beam signals as a function of the required coverage characteristics. The signals are combined after a dephasing operation is performed to generate Na outputs. The beamformer has a non-orthogonal transfer matrix. In transmission mode, Na amplification modules amplify the Na output signals. An output power divider is positioned between the Na amplification modules and Ne radiator elements and has an orthogonal transfer matrix. The transfer matrix allows movement between an Nb distribution part positioned at the power divider input where the amplitude of the Na signals is equal for each of the Nb beams. The phases of the Na signals satisfy a condition where the scalar products of the Nb excitation vectors at the power divider input taken two at a time and the scalar products of the Nb excitation vectors at the corresponding outputs and the other parts of the Nb predetermined output distributions taken two at a time are equal.

IPC 1-7 (main, further and additional classification)

H01Q 25/00

IPC 8 full level (invention and additional information)

H01Q 3/40 (2006.01); H01P 5/16 (2006.01); H01Q 1/28 (2006.01); H01Q 13/06 (2006.01); H01Q 23/00 (2006.01); H01Q 25/00 (2006.01)

CPC (invention and additional information)

H01Q 25/007 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

EP 0734093 A1 19960925; EP 0734093 B1 20010530; CA 2172013 A1 19960921; DE 69613035 D1 20010705; FR 2732163 A1 19960927; FR 2732163 B1 19970530; JP H09116334 A 19970502; US 5736963 A 19980407

INPADOC legal status


2003-01-10 [REG FR ST] NOTIFICATION OF LAPSE

2002-11-29 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20021129

2002-05-22 [26N] NO OPPOSITION FILED

2001-11-28 [GBV] GB: EP PATENT (UK) TREATED AS ALWAYS HAVING BEEN VOID IN ACCORDANCE WITH GB SECTION 77(7)/1977

- Effective date: 20010530

2001-08-31 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20010831

2001-07-05 [REF] CORRESPONDS TO:

- Document: DE 69613035 20010705

2001-05-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB IT

2001-05-30 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20010530

2001-05-30 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20010530

1999-07-28 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19990611

1996-11-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19960917

1996-09-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT