Patent ID: 7558490

Claim:
A receiver to decode data from electromagnetic radiation higher in frequency and shorter in wavelength than microwaves, comprising: a resonant structure adjacent to, but not directly in, the path of a passing electron beam and resonating when a particular frequency of the electromagnetic radiation higher than the microwave frequency is received on the structure, the resonant structure having a dimension smaller than a wavelength of the electromagnetic radiation, and the resonant structure inducing the electron beam toward a second path, different from the first path, when the data from the electromagnetic radiation satisfies a first condition; a first electron absorption element in the second path and receiving at least a portion of the electron beam when data encoded in the electromagnetic radiation satisfies the first condition; and a second electron absorption element, different from the first electron absorption element, receiving at least a portion of the electron beam when data encoded in the electromagnetic radiation satisfies a second condition distinct from the first condition.