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
- Country of Publication:
- United States
- Language:
- English
Similar Records
A system for tranmitting low frequency analog signals over ac power lines
Dual frequency transceiver device
Related Subjects
amplitude
analog
analog input
analog signal
analog signals
applied
band
carrier
carrier signal
converted
converter
coupled
demodulated
fm
fm receiver
form
frequency
frequency analog
frequency converter
frequency range
frequency-to-voltage
input
input signal
line
lines
modulate
modulated
modulated carrier
modulated signal
modulation
modulation signal
original
power
power line
power lines
proportion
range
received
receiver
response
response band
selected
signal
signal amplitude
signal frequency
signals
statutory invention registration
transmitted
transmitter
transmitter coupled
transmitting
varies
voltage converter
voltage-to-frequency
voltage-to-frequency converter