Transmitter of a system for detecting a buried conductor
First Claim
1. A transmitter comprising:
- means for generating a drive waveform signal;
power supply means;
amplifier means connected to the power supply and the waveform generator for producing an output drive signal based on the drive waveform signal;
output means for acting on the output drive signal to generate an output signal having a current and a voltage; and
feedback means for controlling the amplifier means on the basis of the output signal wherein the feedback means provides in-phase and quadrature components of the current and voltage of the output signal.
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Accused Products
Abstract
A system for detecting a buried conductor comprises a transmitter for generating a test signal in the buried conductor and a detector for detecting an electromagnetic signal resulting from the test signal flowing in the buried conductor. The transmitter comprises a waveform generator for generating a drive waveform signal, a power supply, an amplifier, connected to the power supply and the waveform generator for producing an output drive signal based on the drive waveform signal and an output circuit for acting on the output drive signal to generate an output signal having a current and a voltage. In-phase and quadrature components of the current and voltage of the output signal are fed back for controlling the amplifier.
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Citations
24 Claims
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1. A transmitter comprising:
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means for generating a drive waveform signal; power supply means; amplifier means connected to the power supply and the waveform generator for producing an output drive signal based on the drive waveform signal; output means for acting on the output drive signal to generate an output signal having a current and a voltage; and feedback means for controlling the amplifier means on the basis of the output signal wherein the feedback means provides in-phase and quadrature components of the current and voltage of the output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of generating a transmitter output signal comprising:
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generating a drive waveform signal; amplifying the drive waveform signal to produce an output drive signal; generating an output signal based on the output drive signal, the output signal having a current and a voltage; and feeding back in-phase and quadrature components of the current and voltage of the output signal for controlling the amplification. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A transmitter comprising:
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a waveform generator for generating a drive waveform signal; a power supply; an amplifier stage connected to the power supply and the waveform generator for producing an output drive signal based on the drive waveform signal; an output circuit for acting on the output drive signal to generate an output signal having a current and a voltage; and a feedback connection for controlling the amplifier stage on the basis of the output signal wherein the feedback connection provides in-phase and quadrature components of the current and voltage of the output signal.
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Specification