Narrowband high temperature superconducting receiver for low frequency radio waves

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:873872

Reagor, David W ^[1]

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1. Los Alamos, NM

An underground communicating device has a low-noise SQUID using high temperature superconductor components connected to detect a modulated external magnetic flux for outputting a voltage signal spectrum that is related to the varying magnetic flux. A narrow bandwidth filter may be used to select a portion of the voltage signal spectrum that is relatively free of power line noise to output a relatively low noise output signal when operating in a portion of the electromagnetic spectra where such power line noise exists. A demodulator outputs a communication signal, which may be an FM signal, indicative of a modulation on the modulated external magnetic flux.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• Assignee: Regents of University of California (Los Alamos, NM)
• Patent Number(s): US 6263189
• OSTI ID: 873872
• Country of Publication: United States
• Language: English

Related Subjects

narrowband
temperature
superconducting
receiver
frequency
radio
waves
underground
communicating
device
low-noise
squid
superconductor
components
connected
detect
modulated
external
magnetic
flux
outputting
voltage
signal
spectrum
related
varying
narrow
bandwidth
filter
select
portion
relatively
free
power
line
noise
output
operating
electromagnetic
spectra
exists
demodulator
outputs
communication
fm
indicative
modulation
narrow bandwidth
power line
voltage signal
temperature superconductor
magnetic flux
output signal
temperature superconducting
narrow band
external magnetic
radio waves
relatively free
components connected
superconductor component
communication signal
low-noise squid
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