Microwave frequency measurement based on a frequency-to-phase mapping technique.

Area of Science:

• Electrical Engineering and Applied Physics
• Signal Processing and Communications

Background:

• Accurate and instantaneous measurement of radio-frequency (RF) signals is crucial for various applications.
• Existing methods may face limitations in terms of speed, range, or cost.

Purpose of the Study:

• To introduce a new frequency-to-phase mapping technique for RF signal frequency measurement.
• To enable instantaneous and wide-range frequency determination using low-cost components.

Main Methods:

• Generating two low-frequency signals whose phase difference is directly dependent on the input RF signal frequency.
• Employing a low-cost, low-frequency electronic phase detector to measure the phase difference.
• Calculating the input RF signal frequency from the measured phase difference.

Main Results:

• Experimental verification of the frequency-to-phase mapping technique.
• Successful measurement of RF signal frequencies within the 5 to 20 GHz range.
• Achieved measurement errors of less than ±0.2 GHz.

Conclusions:

• The proposed frequency-to-phase mapping technique provides an effective method for instantaneous RF frequency measurement.
• The system demonstrates a wide frequency measurement range and high accuracy.
• This technique offers a cost-effective solution for RF frequency measurement applications.