Network analyser 0-100 MHz

This analyser consist of:

• 200 MHz DDS generator
• PIC18F4550 microcontroller
• Attenuator unit
• return loss bridge with ad8307
• level meter unit with ad8307

Generator output level : -50dBm ... 0dBm
Level meter range : -65 dBm to +20 dBm
Return loss bridge balance : 50 dB

Functions:

• Signal generator - sine wave 0..100 MHz
• Level meter - 50 ohm
• S21 and S11 measuring with external open/short and load calibrators
• marker and zoom functions

My magnetic loop S11 characteristic. Tuned to 14.04 MHz.


Internal setup before finished installation. (not the final state is shown)


Controller unit


Output attenuator section


Return loss bridge with AD8307.


AD9859 200MHz DDS unit