@article{osborne_raman_1989,
title = {Raman Pulse Walk-Off in Single-Mode Fibers: An Exact Analysis},
volume = {6},
shorttitle = {Raman pulse walk-off in single-mode fibers},
url = {http://josab.osa.org/abstract.cfm?URI=josab-6-9-1726},
doi = {10.1364/JOSAB.6.001726},
abstract = {Generation and amplification of Stokes radiation in a single-mode fiber is investigated theoretically by a two-wavelength model that accounts for spontaneous scattering, pump depletion, walk-off owing to group-velocity dispersion, and phase modulation. The model is solved exactly for arbitrary initial pump and Stokes waveforms at the fiber input. The solution is evaluated for the case of Stokes generation from spontaneous scattering and for the amplification of an injected Stokes pulse when the fiber is pumped by 100-psec pulses under complete walk-off conditions. In the former case, it is found that the peak Stokes output power is bounded by the input pump waveform, and, in the latter, that the amplified Stokes pulse shape is insensitive to the precise shape of the pump pulse. Further characteristics of the interaction are extracted from the solution.},
number = {9},
journal = {Journal of the Optical Society of America B},
author = {Osborne, Robert},
year = {1989},
pages = {1726--1731}
},
@article{kaertner_determination_1989,
title = {Determination of the Correlation Spectrum of Oscillators with Low Noise},
volume = {37},
issn = {0018-9480},
doi = {10.1109/22.20024},
abstract = {A general expression for the correlation spectrum of an oscillator, described by a set of nonlinear ordinary differential equations with intrinsic noise sources, is derived by a first-order perturbation theory. The analytical derivations are well suited to the numerical determination of the correlation spectrum by Poincare mapping methods. The theory is applied to a lumped circuit model of Colpitts oscillator. It is concluded that the noise behavior of complex oscillator circuits used in microwave engineering can be simulated by the derived method},
number = {1},
journal = {{IEEE} Transactions on Microwave Theory and Techniques},
author = {Kaertner, Franz X.},
month = jan,
year = {1989},
keywords = {Colpitts oscillator, correlation spectrum, correlation theory, equivalent circuits, first-order perturbation theory, intrinsic noise sources, low noise oscillators, lumped circuit model, microwave engineering, microwave oscillators, noise, nonlinear network analysis, nonlinear ordinary differential equations, numerical determination, oscillators, Poincare mapping methods, spectral analysis, time-domain analysis},
pages = {90--101}
},
@inproceedings{russer_hyperthermia_1989,
address = {Sindelfingen, {GErmany}},
title = {Hyperthermia System for Treatment of Malignant Eye Tumors},
booktitle = {4th Conference on Microwaves and Optronics {(MIOP)}},
author = {Russer, Peter and Türkner, Karl-Heinz and Riedel, K. and Schaal, T.},
month = feb,
year = {1989},
pages = {8A5}
},
@article{valenzuela_high_1989,
title = {High Q Coplanar Transmission Line Resonator of {YB2Cu3O7-x} on {MGO}},
volume = {55},
issn = {0003-6951},
doi = {10.1063/1.101576},
abstract = {We present the first coplanar waveguide transmission line resonator patterned from a perovskite high T{\textless}inf{\textgreater}c{\textless}/inf{\textgreater} superconducting film at 9 {GHz.} At 77 K the unloaded quality factor Q{\textless}inf{\textgreater}0{\textless}/inf{\textgreater} of the resonator patterned from a {YBa{\textless}inf{\textgreater}2{\textless}/inf{\textgreater}Cu{\textless}inf{\textgreater}3{\textless}/inf{\textgreater}O{\textless}inf{\textgreater}7-x{\textless}/inf{\textgreater}} film on a {MgO} substrate is 1300, that is, 14 times higher than that of the copper resonator and 17 times higher than that of the gold resonator at the same temperature. At 4.2 K a Q{\textless}inf{\textgreater}0{\textless}/inf{\textgreater} factor of 3300 was measured for the {YBa{\textless}inf{\textgreater}2{\textless}/inf{\textgreater}Cu{\textless}inf{\textgreater}3{\textless}/inf{\textgreater}O{\textless}inf{\textgreater}7-x{\textless}/inf{\textgreater}} {/MgO} resonator. Simple calculations of the quality factor show that values of 10 \#x2009;000 at 77 K should be possible using better substrates, films, and etching techniques. This resonator could form the basic structure of more complex microwave filter systems operating at liquid \#x2010;nitrogen temperatures.},
number = {10},
journal = {Applied Physics Letters},
author = {Valenzuela, Alejandro A. and Russer, Peter},
month = sep,
year = {1989},
keywords = {{HIGH-TC} {SUPERCONDUCTORS}},
pages = {1029 --1031}
},
@article{goller_time-domain_1989,
title = {Time-domain modeling of {IMPATT} oscillators},
volume = {36},
issn = {0098-4094},
doi = {10.1109/31.31334},
abstract = {The dynamics of an {IMPATT} {(IMPact} Avalanche Transit Time) oscillator is modeled in phase space as a set of first-order differential equations. The numerically simple model contains approximations for the nonlinear field dependence of the ionization coefficient and for the effects of diffusion and series resistance in the field free region. The parameters are then adapted to a realized oscillator. Preliminary simulations show that the model gives reasonable results},
number = {7},
journal = {{IEEE} Transactions on Circuits and Systems},
author = {Göller, Thomas and Kaertner, Franz X.},
month = jul,
year = {1989},
keywords = {dynamics, field free region, first-order differential equations, {IMPATT} diodes, {IMPATT} oscillators, ionization coefficient, microwave oscillators, nonlinear field dependence, phase space, series resistance, time-domain analysis},
pages = {988--996}
},
@inproceedings{scholl_efficient_1989,
address = {Montreal, Que., Canada},
title = {Efficient Design Tool for {SAW-Resonator} Filters},
volume = {1},
doi = {10.1109/ULTSYM.1989.66973},
abstract = {The advantages of the coupling-of-modes {(COM)} formalism and the transmission-matrix approach are combined to create exact and computationally efficient analysis and synthesis {CAD} tools for the design of {SAW-resonator} filters. The models for the filter components, especially gratings, interdigital transducers {(IDTs).} and multistrip couplers {(MSCs)}, are based on the {COM} approach, which delivers closed-form expressions. In order to determine the relevant {COM} parameters, the integrated {COM} differential equations are compared with analytically derived expressions from the transmission-matrix approach. The most important second-order effects such as energy storage, propagation loss and mechanical and electrical loading are fully taken into account. As an example, the authors investigate a two-pole, acoustically coupled resonator filter at 914.5 {MHz} on {AT} quartz. Excellent agreement between theory and measurement is found},
booktitle = {{IEEE} Ultrasonics Symposium},
author = {Scholl, Gerd and Christ, Andreas and Grassl, {H.P.} and Ruile, Werner and Russer, Peter and Weigel, Robert},
month = oct,
year = {1989},
keywords = {914.5 {MHz}, acoustically coupled resonator filter, analysis and synthesis {CAD} tools, {AT} quartz, {CAD}, coupling-of-modes, design tool, differential equations, electrical loading, energy storage, gratings, interdigital transducers, mechanical loading, multistrip couplers, propagation loss, {SAW-resonator} filters, second-order effects, surface acoustic wave filters, transmission-matrix approach, ultrasonic devices},
pages = {135--140}
},
@article{valenzuela_surface_1989,
title = {Surface Resistance and Magnetic Penetration Depht of structed {YBa2Cu3O7-x-thin} Films},
author = {Valenzuela, Alejandro A. and Sölkner, G. and Keßler, Jochen and Russer, Peter},
year = {1989}
},
@inproceedings{buchler_varactor-tuned_1989,
address = {Long Beach, {CA}, {USA}},
title = {Varactor-tuned planar W-band oscillator},
volume = {3},
doi = {10.1109/MWSYM.1989.38941},
abstract = {A planar, hybrid, integrated {VCO} (voltage-controlled oscillator) for the {{\textless}e1{\textgreater}W{\textless}/e1{\textgreater}-band} has been fabricated on a high-resistivity (10000 Omega; cm) silicon substrate. For this purpose an oscillator circuit for fixed-frequency {CW} (continuous wave) operation has been extended to obtain frequency variation by voltage control. Frequency variation is obtained by coupling a radial line sector to a disk resonator using a varactor diode. An Si quasi-read double-drift {IMPATT} diode is used as the active device. A hyperabrupt doping profile is used in the varactor diode. The chip size is 6 times;4.5 mm{\textless}sup{\textgreater}2{\textless}/sup{\textgreater}. A tuning range of 380 {MHz} around 80.2 {GHz} with an output power of 18 {mW} is obtained},
booktitle = {{IEEE} {MTT-S} International Microwave Symposium},
author = {Büchler, Josef and Luy, Johann-Friedrich and Strohm, Karl M.},
month = jun,
year = {1989},
keywords = {18 {MW}, 80.2 {GHz}, disk resonator, double-drift {IMPATT} diode, fixed-frequency {CW}, hyperabrupt doping profile, {IMPATT} diodes, integrated {VCO}, microwave oscillators, output power, radial line sector, Si, solid-state microwave circuits, varactor diode, variable-frequency oscillators, voltage-controlled oscillator, W-band},
pages = {1205--1206}
},
@inproceedings{luy_90_1989,
address = {Sindelfingen, {GErmany}},
title = {90 {GHz} {SIMMWIC} {(Silicon} Monolithic Microwave Integrated Circuits)},
booktitle = {4th Conference on Microwaves and Optronics {(MIOP)}},
author = {Luy, Johann-Friedrich and Büchler, Josef},
month = feb,
year = {1989}
},
@inproceedings{fleischmann_high_1989,
address = {London, England, {UK}},
title = {A High Frequency Low Noise Acoustic {STW} {VCO}},
doi = {10.1109/EUMA.1989.334100},
abstract = {A voltage controlled oscillator {(VCO)} at 2.65 {GHz} has been developed using acoustic surface transverse wave {(STW)} delay lines operating at the fifth harmonic as the frequency controlling element. A filter with three transducers has been designed. The {STW} filter also serves as the oscillator output coupler. Compared to a microstrip coupler, the spectral characteristic of the oscillator is strongly improved due to the high selectivity of the transducer type coupler. The Q value and the untuned insertion loss of the filter were 3600 and 30 {dB}, respectively. A very thin metallization of only 25 nm aluminum was used for the {STW} filter. Excellent phase noise data have been measured. A single-sideband phase noise to carrier ratio of Â¿93 {dBc/Hz} at 1 {kHz} and Â¿63 {dBc/Hz} at 100 Hz was attained. As a phase shifter, a {GaAs} varactor diode circuit is used. Tuning range and output power of the oscillator were Â± 375 {kHz} and 3 {dBm}, respectively. The load pulling (frequency stability) is Â± 3.5 {kHz} at 12 {dB} return loss. Attenuation of harmonics is higher than 44 {dB} referred to the carrier.},
booktitle = {19th European Microwave Conference {(EuMA)}},
author = {Fleischmann, Bernd and Russer, Peter and Schaller, A. and Weigel, Robert},
month = sep,
year = {1989},
pages = {1015 --1020}
},
@inproceedings{weigel_planare_1989,
address = {Stuttgart, Germany},
title = {Planare akustooptische Lichtablenker in Lithiumniobat},
volume = {4},
booktitle = {Kolloquium der Deutschen Forschungsgemeinschaft, {SPP} Integrierte Optik},
author = {Weigel, Robert},
month = mar,
year = {1989},
pages = {3}
},
@inproceedings{dupuis_hybrid_1989,
address = {London, England, {UK}},
title = {Hybrid Integrated Ku-Band {VCO}},
doi = {10.1109/EUMA.1989.334099},
abstract = {A hybrid integrated Ku-band voltage controlled oscillator is described. The oscillator design is based upon a linear circuit model of the {GaAs-MESFET} {NE71000.} The oscillator circuit is subdivided into two chained twoports, an active twoport containing only the voltage controlled current source modelling the transconductance of the {MESFET} and a linear feedback twoport containing all the other circuit elements of the transistor as well as the oscillator circuit embedding the {FET.} Using this model we optimized the oscillator circuit within the whole tuning range. An output power of 12 {dBm} within a tuning bandwidth of 3 {GHz} was achieved. High Q-varactors were used in order to obtain good phase noise performance. A phase noise of Â¿70 {dBc/Hz} at an offset of 10 {kHz} of the carrier has been measured.},
booktitle = {19th European Microwave Conference {(EuMA)}},
author = {Dupuis, A. and Hausner, Josef and Russer, Peter},
month = sep,
year = {1989},
pages = {1009 --1014}
},
@inproceedings{fleischmann_2.5_1989,
address = {Montreal, Que., Canada},
title = {A 2.5 {GHz} Low Noise Phase Locked Surface Transverse Wave {VCO}},
volume = {1},
doi = {10.1109/ULTSYM.1989.66960},
abstract = {A hybrid {VCO} (voltage-controlled oscillator) at 2.488 {GHz} which is phase locked to a crystal oscillator operating at 75.4 {MHz} is described. Acoustic surface transverse wave {(STW)} delay lines operating at the fifth harmonic are used as the frequency-controlling element of the {VCO.} In order to reduce the delay-line electromagnetic feedthrough a three-transducer-type {STW} filter design is combined with a microstrip rat-race coupler. The filters were designed using advanced analysis methods and fabricated on rotated Y-cut quartz substrates with a standard photolithographic process. The delay lines were characterized by a center frequency of 2.49 {GHz}, an untuned insertion loss of 22 {dB}, an unloaded Q value of 1280, and a group delay time of 158 ns. The signal of the {VCO} is mixed with the local (crystal) oscillator signal multiplied by 32, thus providing an {IF} (intermediate frequency) signal of 75.4 {MHz} that feeds the phase-locked loop, which has a bandwidth of 300 {kHz.} A single-sideband phase-noise-to-carrier ratio of -112 {dBc/Hz} at 1-{kHz} offset has been attained},
booktitle = {{IEEE} Ultrasonics Symposium},
author = {Fleischmann, Bernd and Roth, A. and Russer, Peter and Weigel, Robert},
month = oct,
year = {1989},
keywords = {158 ns, 2.5 {GHz}, 22 {dB}, 300 {kHz}, 75.4 {MHz}, acoustic delay lines, acoustic surface transverse wave delay lines, delay-line electromagnetic feedthrough, design, fifth harmonic, group delay time, insertion loss, low noise, microstrip rat-race coupler, phase locked, phase-locked loop, phase-locked loops, phase-noise-to-carrier ratio, {PLL}, Q value, rotated Y-cut quartz substrates, single-sideband, surface acoustic wave devices, surface transverse wave voltage controlled oscillator, ultrasonic devices, variable-frequency oscillators},
pages = {65--69}
},
@inproceedings{biebl_saw_1989,
address = {Montreal, Que., Canada},
title = {{SAW} Propagation on Proton-Exchanged Lithium Niobate},
volume = {1},
doi = {10.1109/ULTSYM.1989.66995},
abstract = {A novel method using only the easily measured velocity of {SAWs} (surface acoustic waves) is demonstrated for determination of elastic constants of anisotropic layers on arbitrarily anisotropic and piezoelectric substrates. The elastic constants and propagation properties of any nonpiezoelectric isotropic, cubic, or even trigonal layer on an arbitrarily anisotropic substrate can be determined with this method. The method was applied to proton-exchanged {(PE)} lithium niobate in order to determine its as yet unknown elastic constants. Dispersion curves and elastic stiffness constants of {PE} Y-cut {LiNbO3} have been evaluated. The results are reliable for waveguides fabricated in diluted melts containing 0.25-2.00 mol.\% lithium benzoate. Using the obtained elastic-stiffness constants, {SAW} propagation properties such as power flow, diffraction, and strain distribution can be analyzed in order to achieve sophisticated design of guided {SAW} and acoustooptic devices based on {PE:LiNbO3} waveguides},
booktitle = {{IEEE} Ultrasonics Symposium},
author = {Biebl, Erwin M. and Russer, Peter and Anemogiannis, Kimon},
month = oct,
year = {1989},
keywords = {acoustic waveguides, acoustooptic devices, acousto-optical devices, anisotropic layers, anisotropic substrate, diffraction, diluted melts, dispersion curves, dispersion relations, elastic constants, elastic stiffness constants, guided {SAW} devices, {LiNbO3} waveguides, lithium benzoate, lithium compounds, piezoelectric substrates, power flow, proton exchanged {LiNbO3}, {SAW} propagation properties, strain distribution, surface acoustic wave devices, surface acoustic wave velocity, surface acoustic waves, ultrasonic propagation},
pages = {281--284}
},
@inproceedings{anemogiannis_wide-band_1989,
address = {Long Beach, {CA}, {USA}},
title = {Wide-Band Nonlinear Chirp Transducers for Planar Acoustooptic Deflectors},
volume = {1},
doi = {10.1109/MWSYM.1989.38716},
abstract = {The design, fabrication, and performance characteristics of {LiNbO} 3-based wideband nonlinear interdigital chirp transducers are reported. A 54\% bandwidth centered at 720 {MHz} has been obtained for a collinear deflector on a {YX} substrate. A 66\% bandwidth at a midband frequency of 600 {MHz} has been designed for a Bragg deflector on a {YZ} substrate with electrodes tilted to satisfy the Bragg condition. Both transducers are down-chirp designs. The chirp waveform has been optimized using an accurate model of analysis. The transducers have been fabricated using 10:1 reduction projection printing and the liftoff technique. Good agreement has been found between theory and measurement. No severe bulk wave generation has been observed},
booktitle = {{IEEE} {MTT-S} International Microwave Symposium},
author = {Anemogiannis, Kimon and Russer, Peter and Weigel, Robert},
month = jun,
year = {1989},
keywords = {10:1 reduction projection printing, 600 {MHz}, 720 {MHz}, acousto-optical devices, bandwidth, Bragg deflector, chirp waveform, collinear deflector, down-chirp designs, integrated optics, liftoff technique, {LiNbO3} substrate, {LiNbO3} wideband nonlinear interdigital chirp transducer, lithium compounds, midband frequency, optical deflectors, planar acoustooptic deflectors, ultrasonic transducers, {YX} substrate, {YZ} substrate},
pages = {269--272}
}