Currently under development
The goal of this project is to create a small vhf/uhf Rf generator with correct and good performance for the lab.
The synthesizer is based on ADF4351, for a good stability, the clock reference come from a OCXO @10Mhz, particular attention will be carried on power supply, with the employ of low drop, low noise regulator, a small cheap little board with AD9833 will ensure FM modulation between DC to 200khz around, due to high number of I/O needed, the MCU is based of Arduino MEGA, the output power will be controlled with a programmable PE4306 attenuator, final filtered output signal will be measured with a ADL5513 log detector, all of data are displayed on a 4×20 LCD, a special IHM front board has been released.
Most of code come from the ADF4351 project, the most difficult part of this project is the harmonic filter, i have already identified some interesting part like ADG904 RF switching from Analog Device, this chip can up to 2.5GHz.
The power supply board is ready.
The board provide, Vcc for, Fanless, LCD, ADL5513 (log detector), Arduino MEGA, OCXO, AD9833 (Function generator), ADF4351 Synthesizer, programmable attenuator, and the futur harmonic filtering unit.
The 10Mhz OCXO and the ADF4351 Board mounted in Rf boxs.