(Solved): 3. 8.1.7, modified. Change the frequency to 90MHz and put your answers in terms of dBmV/V. Not ...

3. 8.1.7, modified. Change the frequency to $$90\mathrm{MHz}$$ and put your answers in terms of $$dB\frac{?V}{m}/V$$. Note the $$\mathrm{AF}\mathrm{dB}$$ units are actually $$dB\frac{V}{m}/V$$ 1.7 Two parallel wires of length $$0.5\mathrm{m}$$ and separation of $$0.1\mathrm{mm}$$ carry equal and opposite currents (differential mode) of $$100\mathrm{mA}$$ at $$100\mathrm{MHz}$$. An antenna with an antenna factor of $$20\mathrm{dB}$$ at $$100\mathrm{MHz}$$ is used to measure the emissions in an FCC Class B test. If the antenna is parallel to and in the plane of the wires, determine the voltage measured by a spectrum analyzer attached to the antenna. [26.8 $$\mathrm{dB}?\mathrm{V}]$$