Reduction of unmodulated ambient blockers in reflected data links through manipulation or replication of the transmitting signal source

An apparatus for wirelessly communicating data with a remote link, comprising:

• (a) a microwave base-station having a microwave transmitter coupled to a transmitting antenna and a microwave receiver coupled to a receiving antenna;
• (b) wherein said microwave transmitter is configured for generating a microwave illumination toward a microwave link, and for receiving a signal reflected from the microwave link which modulates signal reflection level and/or phase to encode data within the reflected signal;
• (c) a reverse blocking circuit connected between said transmitting antenna and said receiving antenna, said reverse blocking circuit configured for extracted a portion of the transmitted output, changing its phase and attenuation, to then combine this at the receiving antenna side with the reflected signal received at the receiving antenna;
• and
• (d) a control circuit configured for adjusting the phase and attenuation in said reverse blocking circuit to produce a signal into the receiver which compensates for ambient reflections received on the receiving antenna as a blocking signal, thus allowing the receiver to amplify modulated reflections from the microwave link while rejecting the blocking signal.

A method for wirelessly communicating data between a base-station and a remote link, comprising:

• (a) generating a microwave illumination from a transmitter output of a base-station toward a remote link;
• (b) coupling a portion of said transmitter output, adjusted for phase and/or attenuation, to a receiver input of the base-station, to partially or fully reject ambient reflections received from background objects at the receiver input;
• (c) modulating reflection of the antenna of the remote link whereby the remote link encodes data being communicated to the base-station;
• and
• (d) extracting data encoded in modulated reflections from the remote link.