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Spread Spectrum & CDMA Resources

A comprehensive directory of spread spectrum resources, including tutorials & theory, circuit diagrams, OEM products, development tools, test equipment, and more.

Visitors: Check out our line of PN Sequence Generators.

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FHSS RF Transceiver Circuits

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PN Generator Circuits

How to Build & Test a 5-Stage PN Generator    

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Spread Spectrum Scene Online
Anybody who's ever designed and built a PN generator knows how simple a task it is. But for those who haven't, and those with limited experience with logic design, the task might seem a bit intimidating. This simple 5-stage LFSR (linear feedback shift register) design should help with the learning curve.


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PN Synchronization & Acquisition Circuits

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RF Signal Sources

2400 MHz Signal Source    

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John Brown
G3DVV
This circuit is an attempt to make the simplest possible signal source for the 13 cm band without the usual grief of not finishing up on the right frequency. It is built on a 4.25 x 1.4 x 1/16 inch epoxy glass board. There are just three transistors: a FET oscillator, a BJT frequency multiplier (times 5), and an output-transistor frequency quintupler. The oscillator starts with a readily available 96MHz crystal and multiplying this by 25 goes up to 2400MHz. The use of filters takes the guesswork out of finding the correct frequencies. The circuit draws 38 mA.


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Make a name for yourself (or a colleague) in the Spread Spectrum & CDMA industry! Be the first to have your online circuit diagram memorialized in this section. Submit today!

























   
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