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C. W. Wang is credited by that name as coauthor with T. Keech of Antenna Models for Electromagnetic Compatibility Analyses by C. W. Wang and T. Keech. The primary title page identifies the authors and the October 2012 memorandum; it does not justify guessing a full personal name or using a portrait of another Wang.^[ref]

The report compiles radio-antenna radiation patterns, gain values and sidelobe requirements for electromagnetic compatibility studies. These inputs determine how strongly a transmitter radiates toward an unintended receiver, so using a realistic pattern can change an interference calculation even when total transmitted power is unchanged.^[ref]

Electromagnetic compatibility is the ability of electrical equipment to operate as intended in its electromagnetic environment without causing unacceptable disturbance to other equipment. Emission and immunity are complementary questions: how strongly does a device disturb its surroundings, and how well does it tolerate disturbances arriving from them?

Interference requires a source, a coupling path and a susceptible receiver. A switching power converter may couple a disturbance into a sensor through shared supply impedance, capacitive coupling or radiated fields. In an illustrative circuit, a $0.2$ A switching-current change through a shared $0.1\Omega$ return impedance produces a $20$ mV reference shift, potentially much larger than the sensor signal. A balanced connection and finite common-mode rejection ratio help only to the extent that the disturbance remains common to the two inputs.

A useful test compares the sensor output with the converter switched on and off, then deliberately changes the coupling path or applies a calibrated disturbance. Antenna patterns, cable routing, grounding and frequency all enter the inference; passing one test configuration does not imply immunity to every disturbance.^[ref]