digital logic - Very high speed counter (around 1.5 GHz to 2 GHz)

I am thinking of a device that can measure the distance of an object from a sensor using a radio transmitter and receiver pair.

I'm thinking of using a counter at the sensor side, with a fixed-frequency transmitter and receiver on the sensor.

There will also be a transmitter and receiver on the object whose distance with respect to the sensor I want to measure.

When the transmitter on the sensor transmits a pulse at the previously agreed radio frequency, the counter on the sensor will start counting.

When this pulse is detected by the receiver on the object, the transmitter on the object will transmit a pulse to be received by the receiver on the sensor at which moment the counter will stop and the distance will be measured according to the time lag.

The problem is that I can not find a counter and a clock source compatible with each other in the 1.5 GHz to 2 GHz range. Any suggestions as to what I can use?

The measurement error that is calculated is 33 cm/s at 1.4 GHz and 13 cm/s at 2.2 GHz. So basically, the faster the counter is, the less error.

Can anyone tell me what counter to use together with the clock source for the counter?

I looked at MC100EP016A counter IC but can not find a clock source for this IC.

I require a clock signal with the following characteristics:

• Input high voltage = 2075 to 2420 mV


• Input low voltage = 1355 to 1675 mV