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Применения > > Broadband Low Error Vector Magnitude (EVM) Direct Conversion Transmitter

Broadband Low Error Vector Magnitude (EVM) Direct Conversion Transmitter (cn0134)

This circuit is a complete implementation of the analog portion of a broadband direct conversion transmitter (analog baseband in, RF out). RF frequencies from 500 MHz to 4.4 GHz are supported through the use of a PLL with a broadband integrated voltage controlled oscillator (VCO). Harmonic filtering of the LO from the PLL ensures excellent quadrature accuracy.

Low noise LDOs ensure that the power management scheme has no adverse impact on phase noise and EVM. This combination of components represents industry-leading direct conversion transmitter performance over a frequency range of 500 MHz to 4.4 GHz



Figure 1: Direct Conversion Transmitter (Simplified Schematic: All Connections and Decoupling Not Shown)

Возможности

  • Direct conversion broadband transmitter
  • Functions from 500 MHz to 4.4 GHz
  • Excellent phase noise reduces errors

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Broadband Low Error Vector Magnitude (EVM) Direct Conversion Transmitter  cn0134

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