Backscatter interrogators, communication systems and backscatter communication methods
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides backscatter interrogators, communication systems and backscatter communication methods. According to one aspect of the present invention, a backscatter interrogator includes a data path configured to communicate a data signal; a signal generator configured to generate a carrier signal; and a modulator coupled with the data path and the signal generator, the modulator being configured to spread the data signal to define a spread data signal and amplitude modulate the carrier signal using the spread data signal, the modulator being further configured to phase modulate the carrier signal.
-
Citations
55 Claims
-
1-47. -47. (canceled)
-
48. A backscatter communication system comprising:
-
an interrogator configured to spread a data signal to create a spread data signal, amplitude and phase modulate a carrier using the spread data signal to create a band-limited, modulated signal having a suppressed carrier, and communicate the band-limited, modulated signal; and
an electronic device configured to receive the band-limited, modulated signal and to output a backscatter reply signal to the interrogator. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55)
-
Specification