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GPS Spew.


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For a project I needed a test signal for the GPS L1 frequency (1.575,42 GHz), to check that an antenna is properly matched to the enclosure. This design creates a square wave at 1/3rd that frequency, so the third harmonic can be used as a test signal. The resulting Basys3 design works very well for it's intended purpose.


As a down-side it is also an effective short range (desktop) GPS jammer, which might be useful to testing an embedded design's behavior when GPS lock is removed.



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