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Notas de Diseño

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  Programmable Baseband Filter for Software-Defined UHF RFID Readers &mdash DN432
  PDF, 101 Kb, Archivo publicado: sept 25, 2008
  Extracto del documento

  Programmable Baseband Filter for Software-Defined
  UHF RFID Readers
  Design Note 432
  Philip Karantzalis Tag signal detection requires measuring the time interval
  between signal transitions (a data “1” symbol has a longer
  interval than a data “0” symbol). The reader initiates a tag
  inventory by sending a signal that instructs a tag to set
  its backscatter data rate and encoding. RFID readers can
  operate in a noisy RF environment where many readers
  are in close proximity. The three operating modes, singleinterrogator, multiple interrogator and dense-interrogator, define the spectral limits of reader and tag signals.
  Software programmability of the receiver provides an
  optimum balance of reliable multitag detection and high
  data throughput. The programmable reader contains a high
  linearity direct conversion I and Q demodulator, low noise
  amplifiers, a dual baseband filter with variable gain and
  bandwidth and a dual analog-to-digital converter (ADC).
  The LTC6602 dual, matched, programmable bandpass
  п¬Ѓlter can optimize high performance RFID readers.
  The LTC6602 Dual Bandpass Filter
  The LTC6602 features two identical п¬Ѓlter channels with
  matched gain control and frequency-controlled lowpass,
  and highpass networks. The phase shift through each
  channel is matched to В±1 degree. A clock frequency, either …

Artículos

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  Programmable Baseband Filter for Software-Defined UHF RFID Readers &mdash LT Journal
  PDF, 201 Kb, Archivo publicado: sept 1, 2009
  Extracto del documento

  DESIGN IDEAS L Programmable Baseband Filter for
  Software-Defined UHF RFID Readers
  by Philip Karantzalis Introduction DESIGN IDEAS
  Programmable Baseband Filter for
  Software-Defined UHF RFID Readers
  .27
  Philip Karantzalis Tag signal detection requires measuring the time interval between signal
  transitions (a data “1” symbol has a
  longer interval than a data “0” symbol).
  The reader initiates a tag inventory by
  sending a signal that instructs a tag
  to set its backscatter data rate and
  encoding. RFID readers can operate
  in a noisy RF environment where
  many readers are in close proximity.
  The three operating modes, singleinterrogator, multiple interrogator
  and dense-interrogator, define the
  spectral limits of reader and tag signals. Software programmability of the
  receiver provides an optimum balance
  of reliable multitag detection and high
  data throughput. The programmable
  reader contains a high linearity direct
  conversion I and Q demodulator, low …

Linea modelo

Clasificación del fabricante

• Signal Conditioning > Amplifiers > Programmable Gain Amplifiers
• Signal Conditioning > Amplifiers > Differential Amplifiers > Fully Differential Amplifiers
• Signal Conditioning > Filters > Wideband Active Filters

Otros nombres:

LTC6602CUFTRPBF, LTC6602CUF TRPBF