Patent ID: 8837647
Filing Date: 2014-09-16
Classification: H03G,H04B

Abstract:
1. An antenna amplifier, comprising: a first amplifier circuit configured to receive a first signal from a first antenna, the first amplifier circuit having a first analog automatic gain control and a first signal output, the first analog automatic gain control configured to set a first amplification of the first signal in response to receiving a first digital control signal; a second amplifier circuit configured to receive a second signal from a second antenna, the second amplifier circuit having a second analog automatic gain control and a second signal output, the second analog automatic gain control configured to set a second amplification of the second signal in response to receiving a second digital control signal; a summator connectable to the first signal output of the first amplifier circuit and the second signal output of the second amplifier circuit, the summator having a sum signal output configured to output to a receiver a sum signal representing a sum of the first signal output and the second signal output, wherein the sum signal is transmitted by a single cable; and a digital gain controller configured to receive a digital command signal generated by the receiver in response to determining, based on the sum signal, overdriving of the first amplifier circuit or the second amplifier circuit, wherein the digital command signal is transmitted by the single cable, the digital gain controller configured to control the setting of a selected one of the first amplification and the second amplification by outputting the first digital control signal to the first amplifier circuit or the second digital control signal to the second amplifier circuit.