ES2127136B1 - AUTOMATIC CONTROL SYSTEM FOR VERY LOW CONSUMPTION GAIN. - Google Patents

AUTOMATIC CONTROL SYSTEM FOR VERY LOW CONSUMPTION GAIN.

Info

Publication number
ES2127136B1
ES2127136B1 ES9700908A ES9700908A ES2127136B1 ES 2127136 B1 ES2127136 B1 ES 2127136B1 ES 9700908 A ES9700908 A ES 9700908A ES 9700908 A ES9700908 A ES 9700908A ES 2127136 B1 ES2127136 B1 ES 2127136B1
Authority
ES
Spain
Prior art keywords
gain control
low consumption
control system
automatic gain
filter
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 - Fee Related
Application number
ES9700908A
Other languages
Spanish (es)
Other versions
ES2127136A1 (en
Inventor
Gonzalez Fco Javier Ortega
Martin Jose Luis Jimenez
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.)
Universidad Politecnica de Madrid
Original Assignee
Universidad Politecnica de Madrid
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 Universidad Politecnica de Madrid filed Critical Universidad Politecnica de Madrid
Priority to ES9700908A priority Critical patent/ES2127136B1/en
Publication of ES2127136A1 publication Critical patent/ES2127136A1/en
Application granted granted Critical
Publication of ES2127136B1 publication Critical patent/ES2127136B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

Sistema de control automático de ganancia de muy bajo consumo. Sistema de control automático de ganancia basado en la utilización de un filtro o circuito resonante desintonizado de forma controlada dentro de un lazo de realimentación. El sistema presentado se caracteriza porque permite el control del nivel de una señal de Radio Frecuencia mediante el cambio de la frecuencia de paso de un filtro de paso banda. Además, la frecuencia de paso del filtro se puede controlar mediante una magnitud eléctrica, generalmente una tensión. Por ello se realiza la función de control de ganancia con un consumo extremadamente bajo. El sistema, además, eleva muy poco la cifra de ruido del receptor. Este sistema permite realizar el control automático de ganancia en receptores de radio frecuencia que deban presentar como característica principal un consumo de potencia muy bajo, como son los equipos portátiles para radiobúsqueda, telefonía personal, telemando y similares.Very low consumption automatic gain control system. Automatic gain control system based on the use of a controlled detuned filter or resonant circuit within a feedback loop. The presented system is characterized in that it allows the control of the level of a Radio Frequency signal by changing the pass frequency of a band pass filter. In addition, the filter's passing frequency can be controlled by an electrical quantity, usually a voltage. Therefore, the gain control function is performed with extremely low consumption. The system, in addition, raises very little the noise figure of the receiver. This system allows automatic gain control to be carried out on radio frequency receivers that must have very low power consumption as their main characteristic, such as portable equipment for radio paging, personal telephony, remote control and the like.

ES9700908A 1997-04-28 1997-04-28 AUTOMATIC CONTROL SYSTEM FOR VERY LOW CONSUMPTION GAIN. Expired - Fee Related ES2127136B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9700908A ES2127136B1 (en) 1997-04-28 1997-04-28 AUTOMATIC CONTROL SYSTEM FOR VERY LOW CONSUMPTION GAIN.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9700908A ES2127136B1 (en) 1997-04-28 1997-04-28 AUTOMATIC CONTROL SYSTEM FOR VERY LOW CONSUMPTION GAIN.

Publications (2)

Publication Number Publication Date
ES2127136A1 ES2127136A1 (en) 1999-04-01
ES2127136B1 true ES2127136B1 (en) 1999-12-01

Family

ID=8299111

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9700908A Expired - Fee Related ES2127136B1 (en) 1997-04-28 1997-04-28 AUTOMATIC CONTROL SYSTEM FOR VERY LOW CONSUMPTION GAIN.

Country Status (1)

Country Link
ES (1) ES2127136B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS561608A (en) * 1979-06-18 1981-01-09 Fujitsu Ltd Multistep agc control system for automatic equalizer
JP2881770B2 (en) * 1988-06-21 1999-04-12 ソニー株式会社 AGC circuit
DE69020538T2 (en) * 1989-07-15 1996-02-22 Philips Electronics Nv AUTOMATIC LEVEL CONTROL.

Also Published As

Publication number Publication date
ES2127136A1 (en) 1999-04-01

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