US 2019/0296697 A1 · PHASED ARRAY ANTENNA SYSTEM

Abstract

A phased array antenna system having a plurality of antenna elements arranged into an array is disclosed. Each of a plurality of amplifier circuitries has an output terminal coupled to a corresponding one of the plurality of antenna elements and includes a power amplifier having a control terminal coupled to an input terminal. The power amplifier has a first current terminal coupled to the output terminal and a second current terminal coupled to a fixed voltage node. Further included in each of the plurality of amplifier circuitries is a current limiter having a bias terminal coupled to the control terminal of the power amplifier to adjust a bias point of the power amplifier to limit current flowing through the first current terminal and the second current terminal to within a predetermined current range. Some embodiments also include a voltage limiter to limit voltage amplitude at the output terminal.

Claims10

Dependent claims

A phased array antenna system comprising:

a plurality of antenna elements arranged into an array;
and
a plurality of amplifier circuitries, each of the plurality of amplifier circuitries comprising:
an input terminal;
an output terminal coupled to a corresponding one of the plurality of antenna elements;
a power amplifier having a control terminal coupled to the input terminal and a first current terminal coupled to the output terminal and a second current terminal coupled to a fixed voltage node;
and
a voltage limiter coupled between the output terminal and the fixed voltage node to limit voltage amplitude at the output terminal to within a predetermined voltage range.

5 more elements

Dependencies are inferred from the claim text.

Phased array antenna system

Life of this patent

Phased array antenna system

Life of this patent

Abstract

Claims10