Zobrazeno 1 - 10
of 191
pro vyhledávání: '"D.B. Hunter"'
Autor:
L.V.T. Nguyen, D.B. Hunter
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 54:900-905
A widely tunable RF photonic filter based on a multichannel chirped fiber Bragg grating (MCFG) is demonstrated. This topology is capable of producing continuously tunable high-frequency responses using narrow-band tunable laser sources without introd
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 54:861-867
A continuously variable true-time delay beamformer based on a multichannel chirped fiber grating (MCFG) is demonstrated. The beamformer is capable of wide-band squint-free operation and demonstrates beam steering of a four-element array over /spl plu
Autor:
D.B. Hunter, M. Attygalle
Publikováno v:
IEEE Photonics Technology Letters. 21:206-208
We propose a photonic technique for the measurement of frequency information in radar signal processing applications that has the potential to cover a frequency range of 40 GHz. This technique compares the radio-frequency power response functions gen
Publikováno v:
Zoo Biology. 18:403-414
Eggs collected from captive trumpeter swans (Cygnus buccinator) in 1993 (n = 33) and 1994 (n = 42) were artificially incubated with careful monitoring to identify factors contributing to the low hatch success reported by the Ontario Trumpeter Swan Re
Autor:
D.B. Hunter, L.V.T. Nguyen
Publikováno v:
IEEE Photonics Technology Letters. 18:1188-1190
A novel photonic technique for microwave frequency measurement utilizing dispersion in a multichannel chirped fiber Bragg grating is presented. The technique is based on the amplitude comparison of power fading functions generated by double sideband
Autor:
R.A. Minasian, D.B. Hunter
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 45:1463-1466
A new active photonic signal processor which achieves a high-Q microwave bandpass response is presented. It comprises active fiber within a pair of fiber Bragg gratings, and produces multiple taps with precise delay-time characteristics. The impulse
Publikováno v:
IEEE Photonics Technology Letters. 17:2173-2175
A wide-band continuously tunable microwave photonic filter based on a novel multichannel chirped fiber Bragg grating is demonstrated. The four-tap filter demonstrates continuous tuning from 4.5 to 14 GHz through the use of uniquely incrementing dispe
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
D.B. Hunter, Robert A. Minasian
Publikováno v:
IEEE Photonics Technology Letters. 11:874-876
A new photonic filter which can realize both high-resolution bandpass microwave response and which is also widely tunable is presented. This is based on the use of long chirped Bragg gratings and a section of active fiber, and tuning is obtained by c
Autor:
Hamid R. Haghighi, M.D. Lambourne, D.B. Hunter, Shayan Sharif, Mohamed Faizal Abdul-Careem, Niroshan Thanthrige-Don
Publikováno v:
Veterinary immunology and immunopathology. 122(3-4)
The objective of the study was to determine the cellular and cytokine responses associated with dinitrofluorobenzene (DNFB)-induced skin contact hypersensitivity (SCH), as an indicator of cell-mediated immune response, in the chicken. The thickness o