Global Patent Index - EP 0660983 A4

EP 0660983 A4 2000-09-13 - METHOD AND APPARATUS FOR SEPARATING CHANNELS FROM A RADIO FREQUENCY TRANSMITTER

Title (en)

METHOD AND APPARATUS FOR SEPARATING CHANNELS FROM A RADIO FREQUENCY TRANSMITTER

Title (de)

VERFAHREN UND VORRICHTUNG ZUR KANALTRENNUNG EINES HOCHFREQUENZSENDERS

Title (fr)

PROCEDE ET APPAREIL PERMETTANT D'ESPACER LES CANAUX D'UN POSTE DE RADIOTRANSMISSION

Publication

EP 0660983 A4 (EN)

Application

EP 94913925 A

Priority

  • US 9403007 W
  • US 5110193 A

Abstract (en)

[origin: WO9424772A1] A method and apparatus are provided for separating spectrally diverse radio frequency signals. The apparatus includes means, within a signal transfer module (23), for transferring an input signal received at a first port of the signal transfer module (23) to a second port of the signal transfer module. At least one frequency selective assembly (37, 24) is included, interconnected with the second port of the signal transfer module, presenting a characteristic impedance to a desired signal of the input signal and reflecting of their signals of the input signal to the second port of the frequency transfer module. A means, within the signal transfer module for transferring a reflected signal received at the second port of the signal transfer module to a third port of the signal transfer module is also included. A first antenna (31) is interconnected with the frequency selective cavity assembly for transmission of the desired signal. A second antenna (30) is interconnected with the third port of the signal transfer module for transmission of the other signals. The method of practising the invention is also provided.

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

H04B 1/02; H04B 1/04

IPC 8 full level (invention and additional information)

H04J 1/08 (2006.01); H01P 1/213 (2006.01); H04B 1/04 (2006.01); H04B 7/26 (2006.01)

CPC (invention and additional information)

H01P 1/2138 (2013.01); H04B 1/0483 (2013.01)

Citation (search report)

Designated contracting state (EPC)

GB

EPO simple patent family

WO 9424772 A1 19941027; CA 2136443 A1 19941027; EP 0660983 A1 19950705; EP 0660983 A4 20000913; JP H07508391 A 19950914

INPADOC legal status


2002-01-02 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20010606

2001-03-14 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010126

2000-09-13 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000731

2000-09-13 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): GB

2000-09-13 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7H 04B 1/02 A, 7H 04B 1/04 B

1995-07-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19950427

1995-07-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): GB