Across the top is the antenna. The wire descending from the antenna goes to the parallel LC resonant circuit consisting of a coil and a variable capacitor, CV. Together they tune in to the desired ...
Arthur Witulski, Adan Hernandez, and Robert Erickson, "Small-Signal Equivalent Circuit Modeling of Resonant Converters," IEEE Transactions on Power Electronics, January 1991. Series, parallel, and LCC ...