Title :
Demonstration of a wide-band image rejection microwave downconverter
Author :
Strutz, Shane J. ; Biernacki, Paul ; Nichols, Lee ; Williams, Keith J.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
fDate :
6/1/2000 12:00:00 AM
Abstract :
A photonic image-rejection downconverter capable of down-converting radio-frequency (RF) signals over a range of 5-18 GHz into an IF band 2.1 GHz wide (3.3-5.4 GHz) is presented. RF signals received by the system are first up-converted into the passband of a 21.3-23.4-GHz filter, and then optically down-converted to 3.3-5.4 GHz. The system exhibited better than 60 dB of image rejection over its entire bandwidth and spurious signals resulting from harmonic mixing products were more than 25 dB below the downconverted signal.
Keywords :
harmonic generation; microwave filters; microwave photonics; optical fibre networks; 2.1 GHz; GHz filter; IF band; RF signals; downconverted signal; harmonic mixing products; image rejection; optically down-converted; passband; photonic image-rejection downconverter; spurious signals; wide-band image rejection microwave downconverter; Band pass filters; Bandwidth; Microwave filters; Optical filters; Optical mixing; Passband; Power harmonic filters; RF signals; Radio frequency; Wideband;
Journal_Title :
Photonics Technology Letters, IEEE
