Analog pseudo random bit sequence generator
AssigneeAnritsu Corporation
InventorDonald Anthony Bradley
Life of this patent
Estimating the term…
Abstract
A Pseudo Random Bit Sequence (PRBS) generator is provided with components to enable operation at very high microwave frequencies with inexpensive components. The PRBS generator initially replaces the D flip-flops of a conventional PRBS generator with delay lines connected in a similar manner. Further, an exclusive OR (EXOR) gate used in a conventional device is replaced in one embodiment by a mixer and amplifier. In another embodiment, the EXOR gate is replaced by a Gilbert Cell. In some embodiments, complementary outputs of an EXOR gate are connected to separate delay lines to reduce components needed for the PRBS generator.
Claims13
A pseudo random bit sequence (PRBS) generator comprising:
- an exclusive OR (EXOR) circuit having an output providing an output of the PRBS generator;
- a first delay line having an input connected to an output of the EXOR circuit, and an output connected to a first input of the EXOR circuit;
- and
- a second delay line having an input connected to an output of the EXOR circuit, and an output connected to a second input of the EXOR circuit.
A pseudo random bit sequence (PRBS) generator comprising:
- an exclusive OR (EXOR) circuit having an output providing an output of the PRBS generator;
- a first delay line having an input connected to an output of the EXOR circuit, and an output connected to a first input of the EXOR circuit;
- and
- a second delay line having an input connected to an output of the first delay line and an output connected to a second input of the EXOR circuit.
A pseudo random bit sequence (PRBS) generator comprising:
- an exclusive OR (EXOR) circuit having a first output and a second output complementary to the first;
- a first delay line having an input connected to the first output of the EXOR circuit, and an output connected to a first input of the EXOR circuit;
- and
- a second delay line having an input connected to the second complementary output of the EXOR circuit, and an output connected to a second input of the EXOR circuit.
Dependencies are inferred from the claim text.