摘要:
A method and apparatus for remote UWB powering of passive RFID tags, sensors, and other electronic devices at long ranges and still at FCC low emission power limits utilizes a distributed multi-transmitter system configured for spotforming. The UWB powering signal is different from the signal that is used for communication between the tag and its reader. By de-coupling the powering task from the communication task, one is able to increase the range of communication between the tag and the reader, as readers can be designed to have excellent receiver sensitivities, while powering range is increased by use of multiple “spot-forming” antennas over a large area.
摘要:
A method for adaptive Radio Frequency (RF) jamming according to one embodiment includes dynamically monitoring a RF spectrum; detecting any undesired signals in real time from the RF spectrum; and sending a directional countermeasure signal to jam the undesired signals. A method for adaptive Radio Frequency (RF) communications according to another embodiment includes transmitting a data pulse in a RF spectrum; and transmitting a reference pulse separated by a predetermined period of time from the data pulse; wherein the data pulse is modulated with data, wherein the reference pulse is unmodulated. A method for adaptive Radio Frequency (RF) communications according to yet another embodiment includes receiving a data pulse in a RF spectrum; and receiving a reference pulse separated in time from the data pulse, wherein the data pulse is modulated with data, wherein the reference pulse is unmodulated; and demodulating the pulses.
摘要:
A method for adaptive Radio Frequency (RF) jamming according to one embodiment includes dynamically monitoring a RF spectrum; detecting any undesired signals in real time from the RF spectrum; and sending a directional countermeasure signal to jam the undesired signals. A method for adaptive Radio Frequency (RF) communications according to another embodiment includes transmitting a data pulse in a RF spectrum; and transmitting a reference pulse separated by a predetermined period of time from the data pulse; wherein the data pulse is modulated with data, wherein the reference pulse is unmodulated. A method for adaptive Radio Frequency (RF) communications according to yet another embodiment includes receiving a data pulse in a RF spectrum; and receiving a reference pulse separated in time from the data pulse, wherein the data pulse is modulated with data, wherein the reference pulse is unmodulated; and demodulating the pulses.
摘要:
A networking architecture that incorporates the security of Blockchain distributed ledgers as an authentication layer, while connecting mesh nodes using secure, pulse-based wide-band and ultra wide-band communication technology to provide a nearly undetectable, unbreakable, and dynamic wireless communication mesh architecture that can securely transmit data, voice and video over short ranges, in one embodiment, up to 1 Km, is disclosed.