Zobrazeno 1 - 10
of 33
pro vyhledávání: '"P.D. Biernacki"'
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 46:914-922
The Van der Pol (VDP) model of a transistor oscillator describes the behaviour of the oscillator with three parameters. When operating in steady state, only two parameters can be determined by spectrum analysis, these being the oscillation frequency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::755242e71a52d7fa038a03100a2260dc
https://doi.org/10.1109/22.701443
https://doi.org/10.1109/22.701443
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 44:1000-1009
Optical sampling has been employed to obtain the charge and voltage distributions on both a self oscillating active antenna and a power combining oscillating array of such active antennas. Various oscillating arrays have been fabricated on GaAs subst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::386960376c009d2575d14b486cbc16af
https://doi.org/10.1109/22.508631
https://doi.org/10.1109/22.508631
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 1:1037-1046
The electrooptical sampling technique is used to assess the electrical behavior of Ohmic contact regions in GaAs. For this purpose unique Ohmic contact coplanar waveguides were fabricated and tested. A reduced electrooptical sampling signal is detect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2a163a8a24c5b721a36c344d969f89d
https://doi.org/10.1109/2944.488680
https://doi.org/10.1109/2944.488680
Publikováno v:
1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282).
A fiber-optic system for microwave angle of arrival measurements is demonstrated in an anechoic chamber for the first time. The system consists of a four-channel optical downconverter capable of processing received signals from 2-18 GHz. Direction re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93d65d1a2591857111b1fa43e43b6d83
https://doi.org/10.1109/mwsym.1999.779528
https://doi.org/10.1109/mwsym.1999.779528
Publikováno v:
OFC/IOOC . Technical Digest. Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication.
Dynamic range of alternative configurations for a single-channel cascaded-MZM downconverter are compared for the first time to our knowledge. Increased RIN in an optically amplified setup may outweigh increased RF power gain in ultrawideband systems.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdc1d72aaab318f8bbc16368a6a4a9dd
https://doi.org/10.1109/ofc.1999.768156
https://doi.org/10.1109/ofc.1999.768156
A microwave-photonic frequency shifting system capable of 60 dB image rejection over a DC to 18 GHz bandwidth is described. The final IF band can exist within the original RF frequency range with 60 dB isolation. The system allows antenna remoting vi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a4b648950785d13d58661d697c4dbf8
https://zenodo.org/record/1276109
https://zenodo.org/record/1276109
Publikováno v:
1993 IEEE MTT-S International Microwave Symposium Digest.
An electrooptic (EO) sampling technique is used to measure the potential distribution on a 5.8-GHz, 25-HEMT (high electron mobility transistor) grid oscillator power combiner built on a GaAs EO substrate. The grid oscillator is a 2D planar array of H
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be396c2d4da84800423d974b4ee6835f
https://doi.org/10.1109/mwsym.1993.276815
https://doi.org/10.1109/mwsym.1993.276815
Publikováno v:
Proceedings of LEOS'94.
Preliminary results indicate that asymmetries present in the electrooptic sampling data may correspond to defect clusters created in the Ohmic contact process region and also possibly due to the crystal defect regions present in the bulk GaAs wafer.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d14eb23aa01b52c407ab8698a8b6cb83
https://doi.org/10.1109/leos.1994.586301
https://doi.org/10.1109/leos.1994.586301
Publikováno v:
OFC '98. Optical Fiber Communication Conference and Exhibit. Technical Digest. Conference Edition. 1998 OSA Technical Digest Series Vol.2 (IEEE Cat. No.98CH36177).
Summary form only given. Commercial off-the-shelf optoelectronic components can easily be implemented for remoting microwave signals great distances providing essential microwave functionality while also offering less weight, smaller size, less prime
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bd79d512f73104c19523d785e0e234b
https://doi.org/10.1109/ofc.1998.657465
https://doi.org/10.1109/ofc.1998.657465
Publikováno v:
Conference Proceedings. LEOS'98. 11th Annual Meeting. IEEE Lasers and Electro-Optics Society 1998 Annual Meeting (Cat. No.98CH36243).
Frequency conversion is pervasive in the majority of radio transmitters or receivers. In receiver design, frequency conversion exploits heterodyne detection providing higher dynamic range, greater signal to noise ratios, and allows relaxed signal pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2eef440f0da6e5b47450dc2218abdba
https://doi.org/10.1109/leos.1998.739555
https://doi.org/10.1109/leos.1998.739555