Optimization of PCB design for Microwave phase and power signal measurement, digitalization for I2C data transmission

Need to measure power and phase difference between two electromagnetic waves at ISM band of 2.45 GHz and bandwidth less than 100 MHz using MMIC's like AD8302 and power measurement with AD8364 in a 3-4 layer PCB, for monitoring load impedance and signal dissipation in a waveguide. DC o RMS processed signals must be sampled and digitized to be transmitted over an I2C bus with an ADC like Seeed Studio XIAO SAMD21