Title :
High Resolution Microwave Frequency Measurement Using a Dual-Parallel Mach–Zehnder Modulator
Author :
Hualin Zhang ; Shilong Pan
Author_Institution :
Microwave Photonics Res. Lab., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
A novel microwave frequency measurement scheme based on a dual-parallel Mach-Zehnder modulator (DPMZM) is proposed and demonstrated. By simply adjusting the bias voltage of the DPMZM, the measurement range can be divided into several parts and each part has very high resolution. Thus, the system can be used in a two-stage instantaneous frequency measurement scheme, in which the first stage coarsely determines the frequency band of the intercepted microwave signal, and then the proposed scheme measures the frequency with high resolution. An experiment is performed. Instantaneous frequency measurement with a frequency measurement range of 2.3-18.7 GHz and a measurement resolution of ±0.20 GHz is achieved.
Keywords :
frequency measurement; microwave measurement; modulators; DPMZM; dual-parallel Mach-Zehnder modulator; frequency -0.20 GHz; frequency 0.20 GHz; frequency 2.3 GHz to 18.7 GHz; high resolution microwave frequency measurement scheme; intercepted microwave signal; two-stage instantaneous frequency measurement scheme, the; Extraterrestrial measurements; Frequency measurement; Microwave frequencies; Photonics; Voltage measurement; Wavelength measurement; Dual-parallel Mach-Zehnder modulator (DPMZM); instantaneous frequency measurements (IFM); microwave photonics;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2280638
