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Network connected standalone SDR transmitter for the 70cm band with 16W output power

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rwth-afu/sdr-transmitter

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Components

Microcontroller: ST STM32F429VGT6

  • ARM Cortex M4 core with DSP and FPU
  • 180 MHz cpu clock
  • 1 MB flash memory
  • 2x 1Msps 12 bit D/A converters (up to 5Msps, see AN4566)
  • USB 2.0 controller
  • 10/100 Ethernet MAC
  • Datasheet

IQ Modulator: Analog Devices ADRF6755

  • Integrated fractional-N PLL & VCO
  • Gain control span: 47 dB in 1 dB steps
  • Frequency Range: 100 - 2400 MHz
  • P1dB (typ @ 1800 MHz): 8 dBm
  • Baseband modulation bandwidth: 600 MHz
  • Datasheet

PA Driver: NXP BGA7027

  • Frequency Range: 400 - 2700 MHz
  • Gain (typ @ 940 MHz): 19 dB
  • P1dB (typ @ 940 MHz): 29 dBm
  • Datasheet

Power Amplifier: NXP AFT09MS015N

  • Frequency Range: 136 - 941 MHz
  • Power Output (typ): 16 W
  • Gain (typ): 17 dB
  • Datasheet

Power Detector: Analog Devices AD8364 (optional)

  • Frequency Range: LF - 2700 MHz
  • Dual-channel and channel difference output port
  • 60 dB dynamic range
  • Maximum input level: 12 dBm
  • Datasheet

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Network connected standalone SDR transmitter for the 70cm band with 16W output power

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