ES2184833T3 - Receptor de frecuencia intermedia nula. - Google Patents

Receptor de frecuencia intermedia nula.

Info

Publication number
ES2184833T3
ES2184833T3 ES96301172T ES96301172T ES2184833T3 ES 2184833 T3 ES2184833 T3 ES 2184833T3 ES 96301172 T ES96301172 T ES 96301172T ES 96301172 T ES96301172 T ES 96301172T ES 2184833 T3 ES2184833 T3 ES 2184833T3
Authority
ES
Spain
Prior art keywords
signals
intermediate frequency
deviations
eliminated
converter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES96301172T
Other languages
English (en)
Inventor
Steven Bly
Mark Vernon Lane
William Mark Siddall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tait Electronics Ltd
Original Assignee
Tait Electronics Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tait Electronics Ltd filed Critical Tait Electronics Ltd
Application granted granted Critical
Publication of ES2184833T3 publication Critical patent/ES2184833T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant

Abstract

SE PRESENTA UN RECEPTOR DE RADIO DE FRECUENCIA INTERMEDIA CERO QUE COMPRENDE ETAPAS MEZCLADORAS, UN CONVERTIDOR A/D, UN DEMODULADOR DIGITAL, UNA SISTEMA DE RASTREO DE LA PORTADORA Y UN SISTEMA DE ANULACION DE LA PORTADORA. LAS ETAPAS MEZCLADORAS RECIBEN SEÑALES DE FM O DE PM Y GENERAN SEÑALES DE BANDA BASE EN FASE Y EN CUADRATURA ANALOGICA QUE A SU VEZ SON CONVERTIDAS EN SEÑALES DE BANDA BASE DIGITALES POR EL CONVERTIDOR A/D. LAS DESVIACIONES DE CC DE LAS SEÑALES DE BANDA BASE SE ELIMINAN MEDIANTE UN FILTRADO DE PASO ALTO ANTES DE LA DEMODULACION. EL RASTREO PERMITE MANTENER LAS SEÑALES DE BANDA BASE A UNA FRECUENCIA CENTRAL DE SUSTANCIALMENTE CERO HERTZIOS, MIENTRAS QUE LA INTENSIDAD DE LA SEÑAL A ESTA FRECUENCIA SE MINIMIZA O ANULA ANTES DEL FILTRADO DE LAS DESVIACIONES DE CC. ASI, LA INFORMACION QUE DE OTRO MODO SERIA ELIMINADA POR EL FILTRADO QUEDA RETENIDA EN LAS SEÑALES DE BANDA BASE, QUE ESTAN RELATIVAMENTE MENOS DISTORSIONADAS.
ES96301172T 1995-02-21 1996-02-21 Receptor de frecuencia intermedia nula. Expired - Lifetime ES2184833T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NZ27053595 1995-02-21

Publications (1)

Publication Number Publication Date
ES2184833T3 true ES2184833T3 (es) 2003-04-16

Family

ID=19925148

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96301172T Expired - Lifetime ES2184833T3 (es) 1995-02-21 1996-02-21 Receptor de frecuencia intermedia nula.

Country Status (5)

Country Link
US (1) US5715281A (es)
EP (1) EP0729230B1 (es)
DE (1) DE69624020T2 (es)
ES (1) ES2184833T3 (es)
FI (1) FI112132B (es)

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Also Published As

Publication number Publication date
FI960780A (fi) 1996-08-22
EP0729230B1 (en) 2002-10-02
US5715281A (en) 1998-02-03
EP0729230A1 (en) 1996-08-28
FI960780A0 (fi) 1996-02-21
DE69624020D1 (de) 2002-11-07
FI112132B (fi) 2003-10-31
DE69624020T2 (de) 2003-07-17

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