UA49094C2 - Програмований лінійний приймач та спосіб забезпечення у приймачі програмованої лінійності - Google Patents

Програмований лінійний приймач та спосіб забезпечення у приймачі програмованої лінійності

Info

Publication number
UA49094C2
UA49094C2 UA2000063312A UA00063312A UA49094C2 UA 49094 C2 UA49094 C2 UA 49094C2 UA 2000063312 A UA2000063312 A UA 2000063312A UA 00063312 A UA00063312 A UA 00063312A UA 49094 C2 UA49094 C2 UA 49094C2
Authority
UA
Ukraine
Prior art keywords
receiver
linearity
level
signal
power consumption
Prior art date
Application number
UA2000063312A
Other languages
English (en)
Russian (ru)
Inventor
Стівен С. Сіккареллі
Саїд Г. Юніс
Ральф Е. КАУФМАН
Original Assignee
Квалкомм Інкорпорейтид
Квалкомм Инкорпорейтид
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 Квалкомм Інкорпорейтид, Квалкомм Инкорпорейтид filed Critical Квалкомм Інкорпорейтид
Publication of UA49094C2 publication Critical patent/UA49094C2/uk

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3068—Circuits generating control signals for both R.F. and I.F. stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0261—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the polarisation voltage or current, e.g. gliding Class A
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/342—Negative-feedback-circuit arrangements with or without positive feedback in field-effect transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/109—Means associated with receiver for limiting or suppressing noise or interference by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/294—Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/331—Sigma delta modulation being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/372—Noise reduction and elimination in amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G2201/00—Indexing scheme relating to subclass H03G
    • H03G2201/10—Gain control characterised by the type of controlled element
    • H03G2201/106—Gain control characterised by the type of controlled element being attenuating element

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
  • Noise Elimination (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

Програмований лінійний приймач (1200) забезпечує належний рівень роботи системи при зниженому споживання енергії. Зниження споживання енергії засновано на вимірюванні нелінійності вихідного сигналу приймача (1200). Рівень нелінійності виміряється через нахил індикатора рівня сигналу або через відношення енергії на елемент коду до шуму (Ес/Іо). Нахил індикатора рівня сигналу є відношенням зміни вихідного сигналу плюс інтермодуляційні сигнали до зміни вхідного сигналу. Вхідний сигнал періодично збільшується на зумовлене значення і вихідний сигнал приймача (1200) виміряється. Вихідний сигнал включає бажаний сигнал і інтермодуляційні сигнали, породжені нелінійністю у приймачі (1200). Коли приймач (1200) працює лінійно, вихідний сигнал зростає на 1дБ при підвищенні вхідного сигналу на 1 дБ. Однак, якщо приймач (1200) переходить у нелінійний режим, інтермодуляційні сигнали, породжені нелінійністю, зростають швидше, ніж бажаний сигнал. Визначення нахилу індикатора рівня сигналу дозволяє визначити рівень спотворення, внесеного нелінійністю. Ця інформація далі використовується для коригування положення зведеної до входу точки перетину третього порядку у підсилювачі (1234) і змішувачі (1230), що дозволяє забезпечити бажану якість роботи зі зниженням споживання енергії.
UA2000063312A 1997-12-09 1998-12-08 Програмований лінійний приймач та спосіб забезпечення у приймачі програмованої лінійності UA49094C2 (uk)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/987,305 US6498926B1 (en) 1997-12-09 1997-12-09 Programmable linear receiver having a variable IIP3 point
PCT/US1998/026052 WO1999030426A1 (en) 1997-12-09 1998-12-08 Programmable linear receiver

Publications (1)

Publication Number Publication Date
UA49094C2 true UA49094C2 (uk) 2002-09-16

Family

ID=25533176

Family Applications (1)

Application Number Title Priority Date Filing Date
UA2000063312A UA49094C2 (uk) 1997-12-09 1998-12-08 Програмований лінійний приймач та спосіб забезпечення у приймачі програмованої лінійності

Country Status (15)

Country Link
US (1) US6498926B1 (uk)
EP (1) EP1040586B1 (uk)
JP (2) JP4138243B2 (uk)
KR (1) KR100537589B1 (uk)
CN (1) CN1136665C (uk)
AU (1) AU754973B2 (uk)
BR (1) BR9813481A (uk)
CA (1) CA2313471C (uk)
DE (1) DE69832525T2 (uk)
ES (1) ES2251112T3 (uk)
HK (1) HK1034617A1 (uk)
IL (1) IL136405A (uk)
NO (1) NO20002931L (uk)
UA (1) UA49094C2 (uk)
WO (1) WO1999030426A1 (uk)

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