Energy transmission arrangement

An energy transmission arrangement, wherein electrical energy is converted to a microwave energy signal for transmission to a target location remote from said energy transmission arrangement, a phase of said microwave energy signal being controlled on the basis of a pilot signal emitted from said target location and received at a plurality of pilot antennas, said microwave energy signal being emitted in a direction from which said pilot signal has been received via a plurality of transmission antenna elements, comprising:

• phase conjugation means at which said pilot signal received at a first pilot antenna is multiplied n times;
• dividing means, receiving the output of said phase conjugation means to be divided into a plurality of shift signals corresponding to a number of said transmission antenna elements;
• angle detecting means, receiving said pilot signal via the others of said plurality of antennas, and detective of an arrival direction of said pilot signal on the basis of a phase difference in said pilot signal as received at each of said other pilot antennas;
• processing means calculating a phase adjustment value based on the output of said angle detecting means;
• a plurality of phase adjusting means, setting a phase of each shift signal output from said dividing means on the basis of said phase adjustment value calculated by said processing means so as to establish a transmission direction for each of said antenna elements and outputting a directional signal, indicative thereof;
• a plurality of amplifier means each receiving a directional signal output from a corresponding one of said phase adjusting means and further receiving said electrical energy and, amplifying said electrical energy according to said directional signals for establishing said microwave energy signal, said microwave energy signal being output from each of said amplifier means and supplied to a respective one of said antenna elements to be emitted in said transmission direction;
• said phase conjugation means including means for obtaining a difference signal based on said pilot signal input thereto from said first pilot antenna and a common pilot signal received at a reference point within said pilot signal for effecting phase correction of an output of said phase conjugation means.