If the length of a circuit’s conductor is much shorter then the wavelength I’ve read/been told that the radiation from the that conductor is negligible for circuit analysis. The explanation being the voltage along the line at each point will be essentially the same. As I understand in any circuit there will be an electric field between the positive and negative conductors in the circuit and since the magnetic field is around the conductor the propagation of the EM wave will be along the direction of the circuit towards the load (basically the description of the direction of the poynting vector). However, if the length of the circuit’s conductor becomes closer to the wavelength the voltage potential can no longer be considered constant along the conductor. Since there is a voltage potential across the wire does this mean we now also have a small electric field parallel to the direction of the conductor and thus an EM wave will be radiated perpendicular to the conductor? I know there are a lot of other factors to do with radiation patterns and they can be very complex. I am just looking if I have the right general idea for the direction an EM wave is emitted when the conductor approaches the wavelength.