US Patent No. 10,798,715

POINT-TO-POINT RADIO SYSTEM HAVING A PHASED ARRAY ANTENNA SYSTEM


Patent No. 10,798,715
Issue Date October 06, 2020
Title Point-to-point Radio System Having A Phased Array Antenna System
Inventorship Yaacov Sturkovich, Netanya (IL)
Roman Rainov, Petah Tiqwa (IL)
Assignee MAXLINEAR ASIA SINGAPORE PRIVATE LIMITED, Singapore (SG)

Claim of US Patent No. 10,798,715

1. A radio system comprising:a modem;
a transmitter circuit, wherein the transmit circuit comprises a first plurality of front end circuits;
a receiver circuit, wherein the receiver circuit comprises a second plurality of front end circuits;
a phased array antenna system configured for transmitting and receiving radio signals, the phased array antenna system having an antenna pattern having a plurality of nulls, wherein each front end circuit of the first plurality of front end circuits is coupled to a plurality of transmit antenna elements and each front end circuit of the second plurality of front end circuits is coupled to a plurality of receive antenna elements;
a beamforming circuit coupled to the phased array antenna system; and
a control circuit coupled to the beamforming circuit to steer one or more nulls of the plurality of nulls of the antenna pattern in direction of an interferer to substantially reduce unwanted interference from radio frequency signals received by the receiver circuit, wherein the control circuit is configured to sum up, in anti-phase, radio frequency signals transmitted by the transmitter circuit with radio frequency signals received by the receiver circuit, and wherein the control circuit is configured to electrically isolate the transmit circuit from the receive circuit, without using a diplexer circuit, and wherein the control circuit is configured to maintain a performance gradient through an adjustment to at least one of (a) a phase shift configuration or (b) a gain shifting configuration, and recursively check received signal quality about an optimal operating point responsive to the adjustment to the at least one of (a) the phase shift configuration or (b) the gain shifting configuration.