Advanced Characterization of Non-Uniform Passive Devices

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  • Author: Dr. Hatem Akel
Non-uniform pas-sive RF devices are structures that have non-identical ports and/or ports that function at different fre-quencies. For example, a device with a microstrip input port and an SMA output port, is a non-uni-form device. Mixers, multipliers and dividers are other examples of non-uniform devices due to the fact that their ports operate at dif-ferent frequencies. Measuring non-uniform devices is a challenging mission. Indeed, stan-dard calibration kits and procedures cannot be used with non-uniform devices. Calibration can only be performed if, and only if, the ports of the device are identical and function at the same frequency.