Ideally lossless resonant transfer of energy between bandpass filters of equal bandwidth

Claim 1

A RESONANT TRANSFER CIRCUIT FOR TRANSFERRING ENERGY ENTIRELY UNIDIRECTIONALLY FROM A FIRST BANDPASS FILTER TO A SECOND BANDPASS FILTER DURING TIME INTERVALS $ SPACED AT TIME INTERVALS T, WHERE T=1/FS AND FS IS THE SAMPLING FREQUENCY, COMPRISING, IN COMBINATION: A SOURCE OF ENERGY HAVING A BANDWIDTH WHICH IS LESS THAN 1/2FS, FIRST BANDPASS FILTER MEANS HAVING A PASSBAND DEFINED BY TWO CONSECUTIVE INTEGRAL MULTIPLES OF 1/2FS AND PASSING FREQUENCIES WITHIN SAID PASSBAND, SAID FIRST BANDPASS FILTER MEANS COMPRISING A FIRST ENERGY STORAGE MEANS FOR TRANSITORILY STORING THE ENERGY PASSED; SECOND BANDPASS FILTER MEANS OF EQUAL BANDWIDTH TO SAID FIRST BANDPASS FILTER MEANS, AND HAVING A PASSBAND DEFINED BY TWO CONSECUTIVE INTEGRAL MULTIPLES OF 1/2FS AND PASSING FREQUENCIES WITHIN SAID PASSBAND, SAID SECOND BANDPASS FILTER MEANS COMPRISING A SECOND ENERGY STORAGE MEANS FOR SUBSEQUENTLY STORING TRANSITORILY THE ENERGY STORED BY SAID FIRST ENERGY STORAGE MEANS; NORMALLY OPEN SWITCH MEANS FOR INTERCONNECTING SAID FIRST BANDPASS FILTER MEANS AND SAID SECOND BANDPASS FILTER MEANS; AND TIMING MEANS FOR PERIODICALLY CLOSING SAID NORMALLY OPEN SWITCH MEANS DURING TIME INTERVAL $ AT SAMPLING INSTANTS WHICH ARE CONSECUTIVE INTEGRAL MULTIPLES OF 1/FS, FOR TRANSFERRING ENTIRELY UNIDIRECTIONALLY THE ENERGY STORED BY SAID FIRST ENERGY STORAGE MEANS TO SAID SECOND ENERGY STORAGE MEANS.