摘要:
A radio frequency identification (RFID) tag comprises a transceiver and a component coupled to the transceiver. The transceiver is adapted to wirelessly receive power from an RFID reader and/or from a mobile communication device. The power received from the mobile communication device is used to power the component, providing an alternative power source (cellular beacons) that uses no additional handset power.
摘要:
A gallium arsenide monolithic microwave integrated circuit amplifier comprising a first stage having a common gate field effect transistor to provide matching of the input impedance, a second stage having a common source field effect transistor to provide class A gain, and a third stage having a common source open drain field effect transistor to provide class B gain for the amplifier. This monolithic integrated circuit amplifier provides a gain of greater than 25 decibels over a frequency band of 400 Hz-1.5 GHz.
摘要:
A dual-gate gallium arsenide power MESFET chip comprising a source region surrounded by a first gate, a second surrounding the first gate, a drain region juxtaposed to said second gate, and a shorting bar which couples the second gate to the source region. This combination, used in a multi-fingered application, provides a reverse breakdown voltage substantially higher than prior art devices.