In Section 10.10 (“Reciprocity”), we established that a pair of antennas could be represented as a passive linear time-invariant two-port, with \(v_1\) and \(i_1\) representing the potential and curre...In Section 10.10 (“Reciprocity”), we established that a pair of antennas could be represented as a passive linear time-invariant two-port, with \(v_1\) and \(i_1\) representing the potential and current at the terminals of one antenna (“antenna 1”), and \(v_2\) and \(i_2\) representing the potential and current at the terminals of another antenna (“antenna 2”).
