Demonstration of a wide-band image rejection microwave downconverter

Demonstration of a wide-band image rejection microwave downconverter

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...

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Veröffentlicht in:IEEE photonics technology letters 2000-06, Vol.12 (6), p.687-689
Hauptverfasser: Strutz, S.J., Biernacki, P., Nichols, L., Williams, K.J.
Format: Artikel
Sprache:eng
Schlagworte:
Band pass filters
Bandwidth
Downconverters
Intermediate frequency
Microwave filters
Microwaves
Noise levels
Optical filters
Optical mixing
Passband
Photonics
Power harmonic filters
Radio frequencies
Radio frequency
Rejection
RF signals
Wideband
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Zusammenfassung: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.
ISSN:1041-1135
1941-0174
DOI:10.1109/68.849085