Square cell having wide dynamic range and power detector...

Details Square cell having wide dynamic range and power detector... Square cell having wide dynamic range and power detector...

2006-12-06

2009-11-24

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Exponential

C327S356000

Reexamination Certificate

active

07622981

ABSTRACT:
A square cell comprises first and second bipolar transistors each having an emitter, collector and base, the bases of the transistors being connected for receiving an input voltage, and first and second resistors in series with the first and second bipolar transistors respectively and with a source of reference voltage. The collectors are commonly connected to an output node to supply an output current having a component proportional to the square of the input voltage. Enhanced square law conformance may be produced by adding further pairs of bipolar transistors to the cell, with offset voltage elements coupled between bases of successive transistors on each side of the cell.

REFERENCES:
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patent: 6525601 (2003-02-01), Gilbert
Communication Relating to the Results of the Partial International Search for Patent Application No. PCT/US2007/02290 dated on Jun. 10, 2008.

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