(19)
(11) EP 0 565 943 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.08.1994 Bulletin 1994/31

(43) Date of publication A2:
20.10.1993 Bulletin 1993/42

(21) Application number: 93105295.5

(22) Date of filing: 30.03.1993
(51) International Patent Classification (IPC)5: H01P 5/107
(84) Designated Contracting States:
DE ES FR GB GR IT NL SE

(30) Priority: 15.04.1992 IT MI920913

(71) Applicant: SIEMENS TELECOMUNICAZIONI S.P.A.
I-20060 Cassina de Pecchi (Milano) (IT)

(72) Inventors:
  • Bonecchi, Fulvio
    I-20097 San Donato Milanese (Milano) (IT)
  • Negri, Luigi
    I-20097 S. Angelo Lodigiano (Milan) (IT)


(56) References cited: : 
   
       


    (54) Guide-microstrip transition integrating a polarization filter in hermetic active modules with high packing and associated modules


    (57) A guide-microstrip transition including a decoupling filter on the power supply is described. The transition is used in hermetic active microwave modules (SSPA) with high packing. It comprises a glass bead coupling a microstrip of a MIC to a probe functioning as an antenna in a resonant cavity communicating with a wave guide. The probe also comprises a cylindrical conductor with very small diameter and electrical length equal to one-fourth wave length at a frequency of 20GHz connected to the centre of the armature of a discoid capacitor acting as a short-circuit for the RF. A connector is also connected to the centre of said armature and to a battery. The connector and the cylindrical conductor are aligned on the same axis of the glass bead. There is also described a triple amplification module obtained by using said transitions.






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