Precision Optical Transceivers Inc.

Precision Integrated Photonics, Inc.

David M Calhoun

Barrett Bartell

Bryce Tennant

Stefan Preble

Jeffrey Steidle

Phased array antenna system operated from a remote location. Operations at a radio hub location involve generating an RF signal and modulating with the RF signal a continuous wave optical carrier to produce a transmit modulated optical carrier (TMOC). Electronic control signal digital data is also generated at the radio hub to control an antenna beam pattern of an array antenna. The control signal digital data is used to modulate an optical carrier for generating a control signal modulated optical carrier (CSMOC). Both the TMOC and CSMOC are coupled to an optical fiber for communication to an antenna site remote from the radio hub location. At the antenna site, the CSMOC and TMOC are processed to recover the electronic control signal digital data and a plurality of transmit element level modulated RF (ELMRF) signals which are applied to array antenna elements.

Phased array communication system with remote RF transceiver and antenna beam control

Delivering a radio frequency (RF) signal to a remote phased array antenna system involves using an optical modulator at an RF source location to modulate a high power optical carrier signal with a source RF signal Sso as to produce a high power transmit modulated optical carrier (TMOC) signal. An optical link communicates the high power TMOC signal to a remote antenna location, where the high power TMOC is split into N optical paths to obtain N reduced power TMOC signals. In each of the N optical paths, photodetection operations are performed upon the reduced power TMOC signal to obtain N reduced power S'signals which are then constructively combined to obtain a high power S&#x2032;signal which is communicated to at least one antenna element.

Increasing RF power output in photonics-fed phased array antenna systems

Feeding a plurality of antenna elements of an array antenna, involves receiving at a photonic substrate at least one transmit modulated optical carrier (TMOC) signal. The TMOC signal is communicated to an array level photonic integrated circuit (ALPIC) disposed on the photonic substrate where one or more optical processing operations are performed involving the TMOC signal to obtain a plurality of element-level optical carrier (ELOC) signals. These ELOC signals are communicated from the ALPIC to a plurality of conversion locations distributed on the photonic substrate. Photodetectors respectively provided at the conversion locations convert each of the ELOC signals to an element-level modulated radio frequency (ELMRF) signal. The ELMRF signal are coupled from each photodetector respectively to one of the plurality of antenna elements.

Optical interposer for array antennas

Performance of a photonic integrated circuit (PIC) is improved by using at least one electro-optic (EO) device included in the PIC to perform at least one EO conversion operation whereby an information signal is transitioned from a first signal carrier type to a second signal carrier type different from the first signal carrier type. The first and second signal carrier types are selected from the group consisting of an optical signal carrier and an electrical signal carrier. An operating bandwidth of the PIC is increased by performing electrical signal impedance matching operations directly on the at least one optical media substrate. An improved electrical impedance match is thus obtained between the EO device and a second device exclusive of the PIC.

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Victor, NY, United States of America

David M Calhoun