Analog Devices International Unlimited Company

North Carolina State University

Michael Cobb

Qi Guo

Antonio J Montalvo

Hao Jing

Scott D Elliott

Anders R Green

Steven J Lorenc

Leonhard E Bernold

Embodiments of the present disclosure relate to multi-band FDD transceivers. An example transceiver includes a LO, configured to generate a LO signal to be shared between a receiver and a transmitter of the transceiver. Both the receiver and the transmitter use quadrature signal processing and are configured to multi-band operation. Sharing a single LO to perform frequency conversion of different frequency bands of received and transmitted signals advantageously allows reducing the number of LOs used in a multi-band FDD transceiver.

Single local oscillator in a multi-band frequency division duplex transceiver

A crane monitoring system and method is characterized by a plurality of sensors mounted to a crane which communicate data to an on-board control unit. The control unit is characterized by having &ldquo;black box&rdquo; functionality. A tip switch is mounted in parallel relation to the vertical portion of a hoist cable below the boom tip. The control unit processes and stores input data from the sensors which will indicate unsafe crane conditions, defined as alarm events such as dragging and extrication events. Each stored event has a time and date stamp. Upon detection of an alarm event, the control unit logs data from the sensors into a non-volatile memory, along with the data from a period of time prior to the alarm event. Data is stored continuously until the alarm event clears. Additional data is stored for a period of time after the conclusion of the alarm event. This results in a discrete event log residing on the non-volatile memory which can subsequently be accessed by authorized personnel for analysis and identification of the crane operator who caused the alarm event.

Crane monitoring and data retrieval systems and method

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Hillsborough, NC, United States of America

Michael Cobb