System for transmitting low frequency analog signals over AC power lines
- Powell, TN
- Lenoir City, TN
- Knoxville, TN
A system for transmitting low frequency analog signals over AC power lines using FM modulation. A low frequency analog signal to be transmitted is first applied to a voltage-to-frequency converter where it is converted to a signal whose frequency varies in proportion to the analog signal amplitude. This signal is then used to modulate the carrier frequency of an FM transmitter coupled to an AC power line. The modulation signal frequency range in selected to be within the response band of the FM transmitter. The FM modulated carrier signal is received by an FM receiver coupled to the AC power line, demodulated and the demodulated signal frequency is converted by a frequency-to-voltage converter back to the form of the original low frequency analog input signal.
- Research Organization:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-76DP00789
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- H000678
- Application Number:
- 07/079614
- OSTI ID:
- 875240
- Resource Relation:
- Patent File Date: 1987 Jul 30
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
transmitting
frequency
analog
signals
power
lines
fm
modulation
signal
transmitted
applied
voltage-to-frequency
converter
converted
varies
proportion
amplitude
modulate
carrier
transmitter
coupled
line
range
selected
response
band
modulated
received
receiver
demodulated
frequency-to-voltage
form
original
input
voltage-to-frequency converter
modulation signal
carrier signal
modulated signal
power line
input signal
frequency range
analog signal
analog signals
voltage converter
power lines
modulated carrier
signal frequency
signal amplitude
frequency analog
response band
fm receiver
frequency converter
transmitter coupled
analog input
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