Hi,

I have maybe an unusual question, hope there are someone out there that can point me
inn the right direction.

I have put together a new type of phase sensor, that turns out to be very fast and accurate.
It measures phase differences of a few femtoseconds between high frequency signals.
Heres some numbers from a test:

signal frequency: 20Mhz, measurement accuracy: 0,00003deg, measuring time: 1ms.


Are there any practical uses for a sensor like this?


Richard

 

1 ms. That means you can measure the phase difference 1000 times a sec. So I guess it would be ok for applications that don't change phase faster than that.

 

Is it possible to be more application specific?

 

Hi,

I have maybe an unusual question, hope there are someone out there that can point me
inn the right direction.

I have put together a new type of phase sensor, that turns out to be very fast and accurate.
It measures phase differences of a few femtoseconds between high frequency signals.
Heres some numbers from a test:

signal frequency: 20Mhz, measurement accuracy: 0,00003deg, measuring time: 1ms.


Are there any practical uses for a sensor like this?


Richard

So, restating your specification, you are measuring two signals pass 20,000 cycles before you can tell they are 0.00003 degrees out of phase.

Do you have a way to determine each signal is consistent within 0.00003 degrees during that 1mSec?

 

The sensor assumes that the signals are consistent during the measuring time,
or else I wold only get an average readout of the phase angle during that time period.

To determine consistency I suppose several measurements can be done,
to detect if there is any variation.