Abstract: Disclosed herein is an image sensor comprising: a first, a second, and a third radiation detectors, each of which comprising a planar surface to receive radiation from a radiation source; wherein the planar surfaces of the first radiation detector and the second radiation detector are not parallel, the planar surfaces of the second radiation detector and the third radiation detector are not parallel, and the planar surfaces of the third radiation detector and the first radiation detector are not parallel; wherein the first radiation detector, the second radiation detector and the third radiation detector are not arranged in the same row; wherein the first, the second and the third radiation detectors are configured such that the planar surface of each of them includes a position at which an angle of incidence of the radiation from the radiation source is 0°.

Abstract: The present invention relates to a modulation circuit of a digital transmitter, a digital transmitter, and a signal modulation method. The modulation circuit includes: a first synchronizing circuit and a digital modulator, where the first synchronizing circuit separately perform phase delay on a first local-frequency signal or a second local-frequency signal to obtain corresponding delay signals, and perform phase adjustment on a digital baseband signal by using the delay signals, to generate a first adjusted signal and a second adjusted signal; and the digital modulator modulates the first adjusted signal by using the first local-frequency signal, to generate a first radio-frequency signal, and modulates the second adjusted signal by using the second local-frequency signal, to generate a second radio-frequency signal.

Abstract: The present invention relates to a modulation circuit of a digital transmitter, a digital transmitter, and a signal modulation method. The modulation circuit includes: a first synchronizing circuit and a digital modulator, where the first synchronizing circuit separately perform phase delay on a first local-frequency signal or a second local-frequency signal to obtain corresponding delay signals, and perform phase adjustment on a digital baseband signal by using the delay signals, to generate a first adjusted signal and a second adjusted signal; and the digital modulator modulates the first adjusted signal by using the first local-frequency signal, to generate a first radio-frequency signal, and modulates the second adjusted signal by using the second local-frequency signal, to generate a second radio-frequency signal.