GARY PHILIP JOHNSTON
Pilots at 260 St, Kent, WA
License number
Washington A2139056
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
11944 SE 260Th St, Kent, WA 98030
Professional information
E-Field Monitor For Broadband Pulsed
US Patent:
2005002, Feb 3, 2005
Filed:
Jul 30, 2003
Appl. No.:
10/630252
Inventors:
Gary Johnston - Kent WA, US
International Classification:
G01S007/40
US Classification:
342173000, 342192000, 342175000, 324076110, 324076190
Abstract:
A system is provided for substantially continuously monitoring an electromagnetic intensity of short bursts of electromagnetic waves (E-waves) having frequencies within a broad frequency range. The system includes at least one antenna capable of detecting one or more bursts of E-waves and converting the bursts into radio frequency (RF) signals having an energy level correlated to the intensities of the E-waves. The system additionally includes at least one broadband equalizer that normalizes the energy levels of RF signals across the broad range of frequencies and at least one amplifier that amplifies the energy levels of the RF signals output by the broadband equalizer. The system further includes at least one RF peak power sensor for measuring the energy levels of the RF signals output from the amplifier and determining the peak power level of at least one peak RF signal that has the highest energy level. Further yet, the system includes at least one power meter that converts the peak power level of the peak RF signal to power units and a computer based device that utilizes the power units output by the peak power measurement subsystem to determine the strength of the E-wave correlated with the peak RF signal.
E-Field Monitor For Pulsed Signals
US Patent:
6906663, Jun 14, 2005
Filed:
Feb 13, 2004
Appl. No.:
10/779016
Inventors:
Gary P. Johnston - Kent WA, US
Assignee:
The Boeing Company - Chicago IL
International Classification:
G01S007/40
US Classification:
342173, 342192, 342175, 324 7611, 324 7619
Abstract:
A system is provided for substantially continuously monitoring an electromagnetic intensity of short pulses of electromagnetic fields (E-fields) having frequencies within a broad frequency range. The system includes at least one antenna capable of sensing one or more pulses of E-fields and converting the pulses into radio frequency (RF) signals having an energy level correlated to the intensities of the E-fields. The system additionally includes at least one equalizer that normalizes the energy levels of RF signals across the broad range of frequencies and at least one modulation device that adjusts the energy levels of the RF signals output by the equalizer. The system further includes at least one RF power sensor for periodically measuring the energy levels of the RF signals output from the modulation device. Further yet, the system includes at least one power meter that determines the peak power level of at least one peak RF signal that has the highest energy level and converts the peak power level of the peak RF signal to power units. Still further yet, the system includes a computer based device that utilizes the power units output by the peak power measurement subsystem to determine the intensity of the E-field correlated with the peak RF signal as sensed by the antenna.