Patent ID: 8754811
Filing Date: 2014-06-17
Classification: H01Q

Abstract:
1. A transmitter comprising: an antenna array; a plurality of transmitter modules, each of which includes a phase-lock loop with a slipped-cycle counter for determining the number of cycles of slippage before locking of said phase-lock loop, and each of which modules also includes an amplifier and a phase or delay corrector; a source of plural frequency reference signals; a set of paths of various lengths coupled to said source of plural frequency reference signals and to the phase-lock loop of each module for coupling reference signals to each module with various phases; a controller coupled to each module, for determining the phase of the reference signals at each module from the number of slipped cycles, and for setting said phase or delay corrector to compensate an amplified signal for differences among the phases of the reference signals applied to the modules; and a set of paths of controlled phase or delay coupled to said amplifiers of said modules and to the antennas of said array.