Baseband signal converter for a wideband impulse radio receiver
First Claim
1. A device for converting RF pulses received by a wideband impulse radio receiver into one or more baseband signals, the device comprising:
- a. an RF input for receiving the RF pulses;
b. multiple timing inputs for receiving separate timing signals;
c. multiple converter circuits, the converter circuits each having a signal input electrically coupled in parallel to the RF input;
d. each converter circuit having a second input electrically coupled to one of the timing inputs such that each converter circuit can receive one of the separate timing signals;
e. each converter circuit having a baseband signal output; and
f. the device is packaged as a single integrated circuit in which the converter circuits are arranged on a common substrate for single or concurrent operation.
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Accused Products
Abstract
A baseband signal converter device for an impulse radio receiver combines multiple converter circuits and an RF amplifier in a single integrated circuit package. Each converter circuit includes an integrator circuit that integrates a portion of each RF pulse during a sampling period triggered by a timing pulse generator. The integrator capacitor is isolated by a pair of Schottky diodes connected to a pair of load resistors. A current equalizer circuit equalizes the current flowing through the load resistors when the integrator is not sampling. Current steering logic transfers load current between the diodes and a constant bias circuit depending on whether a sampling pulse is present.
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Citations
7 Claims
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1. A device for converting RF pulses received by a wideband impulse radio receiver into one or more baseband signals, the device comprising:
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a. an RF input for receiving the RF pulses;
b. multiple timing inputs for receiving separate timing signals;
c. multiple converter circuits, the converter circuits each having a signal input electrically coupled in parallel to the RF input;
d. each converter circuit having a second input electrically coupled to one of the timing inputs such that each converter circuit can receive one of the separate timing signals;
e. each converter circuit having a baseband signal output; and
f. the device is packaged as a single integrated circuit in which the converter circuits are arranged on a common substrate for single or concurrent operation. - View Dependent Claims (2, 3, 4)
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5. A wideband impulse radio receiver comprising:
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a. an antenna input for receiving time-modulated RF pulses;
b. multiple converter circuits, each converter circuit having an RF signal input electrically connected in parallel with the RF signal inputs on the other converter circuits and to the antenna input, a timing input electrically connected to a corresponding timing signal generator, and a baseband signal output;
c. each converter circuit operable to convert at least a portion of the RF pulses into a baseband signal at a corresponding one of the baseband signal outputs; and
d. the converter circuits and timing signal generators are arranged on a common substrate within a single integrated circuit package such that one or more of the converter circuits can function separately or concurrently to produce separate baseband signals at the corresponding baseband signal outputs. - View Dependent Claims (6, 7)
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Specification