(19)
(11) EP 1 261 066 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.08.2003 Bulletin 2003/33

(43) Date of publication A2:
27.11.2002 Bulletin 2002/48

(21) Application number: 02252898.8

(22) Date of filing: 24.04.2002
(51) International Patent Classification (IPC)7: H01P 1/213
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 23.05.2001 IT TO20010483

(71) Applicant: Marconi Mobile SpA
16153 Genoa (IT)

(72) Inventors:
  • Cadili, Tindaro
    95032 Belpasso (CT) (IT)
  • Gibilaro, Giorigio
    95030 S. Agata Li Battiati (CT) (IT)

(74) Representative: Hoste, Colin Francis 
Marconi Intellectual Property Marrable House The Vineyards
Gt. Baddow Chelmsford Essex CM2 7QS
Gt. Baddow Chelmsford Essex CM2 7QS (GB)

   


(54) Improvements in or relating to diplexer apparatus


(57) A diplexer apparatus comprises a diplexer 111 coupled to a transmit port 112, a receive port 114 and to a horn 116 which is arranged to substantially simultaneously transmit a transmit signal 118 or receive a receive signal 120, the transmit and receive signals 118 and 120 being co-linearly polarised signals. The diplexer 111 has one or more internal surface variations that are arranged to allow substantial all of the transmit signal 118 to pass from the transmit port 112 whilst prohibiting the receive signal 120 from passing. The receive signal 120 is reflected by the diplexer 111 and passes to the receive port 114. The diplexer 111 acts as a frequency discriminator of co-linearly polarised signals 118 and 120.






Search report