US 2026/0088522 A1 · RF MIMO Communication System with Signal Restructuring

Abstract

A signal restructure unit for radio frequency (RF) antenna systems includes four ports and a signal routing circuit. The signal routing circuit receives RF signals at input ports and provides phase-controlled outputs to antenna ports. When receiving sum signals, the unit provides in-phase restructured signals for common-mode antenna operation. When receiving difference signals, the unit provides anti-phase restructured signals for differential-mode antenna operation. The signal routing circuit may be implemented as a rat-race coupler with transmission line segments or as discrete circuit elements including inductors and capacitors. An RF communication system incorporates the signal restructure unit with digital processing circuits, transceivers, and antennas to achieve MIMO operation from a single antenna structure. The system provides improved isolation while reducing the antenna size. The restructure unit enables reconfigurable MIMO operation with enhanced performance for wireless communication applications.

Claims22

Dependent claims

A signal restructure unit for a radio frequency (RF) antenna system, comprising:

a first port coupled to an antenna;
a second port configured to receive second RF signals;
a third port coupled to the antenna;
a fourth port configured to receive first RF signals;
and
a signal routing circuit coupled to the fourth port, the second port, the first port and the third port, and configured to:
provide in-phase restructured signals to the first port and third port when the second RF signals comprise a sum signal;
and
provide anti-phase restructured signals to the first port and third port when the first RF signals comprise a difference signal.

6 more elements

A radio frequency (RF) communication system, comprising:

a digital processing circuit configured to generate and process baseband signals;
a first transceiver coupled to the digital processing circuit, and configured to convert the digital baseband signals to first RF signals and convert received first RF signals to digital baseband signals;
a second transceiver coupled to the digital processing circuit, and configured to convert the digital baseband signals to second RF signals and convert received second RF signals to digital baseband signals;
a signal restructure unit coupled to the first transceiver and the second transceiver, and configured to:
receive first RF signals from the first transceiver and second RF signals from the second transceiver;
and
output restructured RF signals having at least one of in-phase relationship and anti-phase relationship;
an antenna coupled to the signal restructure unit, and configured to radiate the restructured RF signals and receive incoming RF signals.

5 more elements

Dependencies are inferred from the claim text.

RF MIMO Communication System with Signal Restructuring

Life of this patent

RF MIMO Communication System with Signal Restructuring

Life of this patent

Abstract

Claims22