摘要:

AbstractA study aimed at avoiding the high‐frequency oscillation phenomenon in the MMIC distributed amplifier is presented. The results obtained are applicable to both the design simulation step and the bias tuning phase on the realized amplifier. The analysis of a five‐section MMIC distributed amplifier confirms the validity of this research. © 1994 John Wiley&Sons,

ISSN:0895-2477    

DOI:10.1002/mop.4650070502

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractWe describe a fringe shape stabilization scheme for a birefringent fiber ring resonator with power exchange between the birefringent axes. It is shown that this type of resonator provides an easy way of deriving an error signal in order to stabilize the fringe shape. The system uses piezoelectric control of the fiber birefringence along a short portion of the loop, which counteracts environmentally induced changes in the fringe shape. The system is suitable for use in sensing and spectrum analysis applications requiring high accuracy and scale factor stability. © 1994 John Wiley&Sons, Inc

ISSN:0895-2477    

DOI:10.1002/mop.4650070503

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractSingly and randomly polarized nickel‐indiffused waveguides in lithium niobate were found when fabricated under different diffusion conditions. The randomly polarized waveguides are verified to have the advantages of no outdiffusion guiding layer and low diffusion temperatures. The linear electro‐optic coefficient was found only slightly decreased when checked using a Mach‐Zehnder interferometer. © 1994 John Wiley&Son

ISSN:0895-2477    

DOI:10.1002/mop.4650070504

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractAcousto‐optic deflectors are introduced to be used as star couplers that perform broadcasting and routing in local area networks. Configurations for both single‐wavelength and multiwavelength broadcast‐and‐select networks are proposed. A routing network in which both the input and output ports are wavelength tunable is also shown. Acousto‐optic devices provide these networks with the advantage of low insertion loss, simplicity, and compactness, because one device can handle a large number of ports. Analysis for these networks is presented and computed simulation results are shown. The proposed routing network is not limited to the use of acousto‐optic deflectors, because conventional blazed diffraction gratings can be used. © 1994 John Wil

ISSN:0895-2477    

DOI:10.1002/mop.4650070505

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractA modification to the field expressions on the simple Itoh and Rudokas model for the TE01δmode of the parallel‐plate open dielectric resonator is given. This modification is justified by the dramatic improvement in the accuracy of resonant frequency prediction. © 1994 John Wiley&Sons,

ISSN:0895-2477    

DOI:10.1002/mop.4650070506

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractAn improved bidimensional finite‐difference time‐domain (2D FDTD) method has been achieved in order to compute all electromagnetic fields in heterogeneous media when planar microstripmicroslot applicators are used for microwave hyperthermia. This method consists of combining 2D FDTD and classical spectral domain approach (SDA). Good agreements are exhibited with classical SDA, thus allowing the study of inhomogeneous media. © 1994 John Wiley&Sons,

ISSN:0895-2477    

DOI:10.1002/mop.4650070507

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractA probe‐fed superstrate‐loaded rectangular microstrip antenna mounted on a cylindrical body is investigated by using a full‐wave analysis and a moment‐method calculation. Numerical results for the input impedance are calculated and the numerical convergence of the moment‐method calculation is also shown. Variations of the input impedance with the superstrate thickness and curvature radius are presented and discussed. Both the HE01and HE10modes are studied. © 1994 John Wiley

ISSN:0895-2477    

DOI:10.1002/mop.4650070508

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractThe performance characteristics of a 35‐GHz cavity stabilized Gunn diode oscillator is presented. The frequency variations are found to be reduced by a factor of 66 when the oscillator is locked to the cavity. © 1994 John Wiley&Sons, I

ISSN:0895-2477    

DOI:10.1002/mop.4650070509

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractThe dyadic wave matrix is derived for propagation in a biased n‐type semiconductor and an asymptotic expression for the dyadic Green's function is obtained. © 1994 John Wiley&Sons, I

ISSN:0895-2477    

DOI:10.1002/mop.4650070510

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY

摘要:

AbstractIn this article the effect of noise in the data on the Cauchy method is discussed. The noise is assumed to be zero mean and Gaussian. The resulting random variable is a ratio of two Gaussians. The theoretical probability density function is verified by numerical simulation. © 1994 John Wiley&Sons, Inc

ISSN:0895-2477    

DOI:10.1002/mop.4650070511

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1994

数据来源: WILEY