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1990 Vol. 12, No. 6
Display Method:
1990, 12(6): 561-568.
Abstract:
The complex astigmatic wave theory is used to analyse the electromagnetic characteristics of 3-D radome. A number of calculations for the ellipsoidal sandwich radome are performed, and the stereoscopic graphics are constructed. Comparing with the exp...
The complex astigmatic wave theory is used to analyse the electromagnetic characteristics of 3-D radome. A number of calculations for the ellipsoidal sandwich radome are performed, and the stereoscopic graphics are constructed. Comparing with the exp...
1990, 12(6): 569-574.
Abstract:
Based on Ohm-Rayleigh method and Laplace transform, the time-domain dyadic Green s functions for a ideal conducting wedge are obtained. The Characteristics of the wedge in time-domain are systematically analysed. Some conclusions are given, and C. T....
Based on Ohm-Rayleigh method and Laplace transform, the time-domain dyadic Green s functions for a ideal conducting wedge are obtained. The Characteristics of the wedge in time-domain are systematically analysed. Some conclusions are given, and C. T....
1990, 12(6): 575-583.
Abstract:
A modified boundary element method for analysing hybrid modes of waveguide is presented. The coupled boundary integral equations and their reduced forms are deduced for hybrid mode problems, and these equations are discreted into a system of linear a...
A modified boundary element method for analysing hybrid modes of waveguide is presented. The coupled boundary integral equations and their reduced forms are deduced for hybrid mode problems, and these equations are discreted into a system of linear a...
1990, 12(6): 584-592.
Abstract:
The split radix approach is generalized to length pm Discrete Hardy Transform (DHT). It is shown that the radix p/p2 algorithm is superior to the radix p2 and radix p algorithms in number of real multiplications. As an example, a radix 3/9 algorithm ...
The split radix approach is generalized to length pm Discrete Hardy Transform (DHT). It is shown that the radix p/p2 algorithm is superior to the radix p2 and radix p algorithms in number of real multiplications. As an example, a radix 3/9 algorithm ...
1990, 12(6): 593-599.
Abstract:
The optimization problem of constructing a K-edge-connected directed graph from any given directed graph by adding a minimum set of edges is studied. An efficient algorithm with complexity of O(|V|5) is presented. This algorithm contributes a foundat...
The optimization problem of constructing a K-edge-connected directed graph from any given directed graph by adding a minimum set of edges is studied. An efficient algorithm with complexity of O(|V|5) is presented. This algorithm contributes a foundat...
1990, 12(6): 600-606.
Abstract:
The unity gain buffer will be good for designing high frequency SCF if its resistive effect can be eliminated and then the overall parasitic sensitivity will be greatly lowered. Based on this concept, a new parasitic tolerant SC differential transcon...
The unity gain buffer will be good for designing high frequency SCF if its resistive effect can be eliminated and then the overall parasitic sensitivity will be greatly lowered. Based on this concept, a new parasitic tolerant SC differential transcon...
1990, 12(6): 607-613.
Abstract:
Recognization of modulation systems is an important problem in the modern electronic reconnaissance. A general method for solving this problem is suggested. From a segment of a captured signal, the modulation system can be determined, and its paramet...
Recognization of modulation systems is an important problem in the modern electronic reconnaissance. A general method for solving this problem is suggested. From a segment of a captured signal, the modulation system can be determined, and its paramet...
1990, 12(6): 614-627.
Abstract:
The numerical computation of processing error effect of lenses (i.e., the ellipticity and tilt of electrodes/pole-pieces in electron beam focusing and deflection systems) and its evaluation are discussed. First, the computation of the potential distr...
The numerical computation of processing error effect of lenses (i.e., the ellipticity and tilt of electrodes/pole-pieces in electron beam focusing and deflection systems) and its evaluation are discussed. First, the computation of the potential distr...
1990, 12(6): 628-635.
Abstract:
A Aluminate dispenser cathode with Y2O3 have been investigated by using modern surface analysis techniques (AES, XPS, SEM and THEM). The Surface topography, Surface chemistry and emission properties of the cathodes activated in situ have been obtaine...
A Aluminate dispenser cathode with Y2O3 have been investigated by using modern surface analysis techniques (AES, XPS, SEM and THEM). The Surface topography, Surface chemistry and emission properties of the cathodes activated in situ have been obtaine...
1990, 12(6): 636-640.
Abstract:
The design of a new type of sampling latching voltage comparator ZJ03 is described. The common voltage comparators consist of multistage DC amplifier. It is difficult to realize high speed and high precision. The voltage comparator ZJ03 contains a co...
The design of a new type of sampling latching voltage comparator ZJ03 is described. The common voltage comparators consist of multistage DC amplifier. It is difficult to realize high speed and high precision. The voltage comparator ZJ03 contains a co...
1990, 12(6): 641-645.
Abstract:
The port ratio faulty branch location method presented here is aimed at the peculiarity of 10 kV power network in China. By using this method, on line automatic diagnosis of the same place short fault is solved. This method has some features: the mod...
The port ratio faulty branch location method presented here is aimed at the peculiarity of 10 kV power network in China. By using this method, on line automatic diagnosis of the same place short fault is solved. This method has some features: the mod...
1990, 12(6): 646-649.
Abstract:
Based on the complex ray method and source expansion with a set of Gaussian beams, a new method for analysis and calculation of radar cross-section (RCS) of a complex target is presented. This method can be used for arbitrary shaped object, because c...
Based on the complex ray method and source expansion with a set of Gaussian beams, a new method for analysis and calculation of radar cross-section (RCS) of a complex target is presented. This method can be used for arbitrary shaped object, because c...
1990, 12(6): 650-655.
Abstract:
From relativistic linear Vlasov-Maxwell equations, the representations of the starting current and frequency deviation of a electrostatic gyromonotron with a field distribution sin k//z are derived and the numerical calculation are carried out.
From relativistic linear Vlasov-Maxwell equations, the representations of the starting current and frequency deviation of a electrostatic gyromonotron with a field distribution sin k//z are derived and the numerical calculation are carried out.
1990, 12(6): 656-659.
Abstract:
The technique for preparing cross-sectional specimen of semiconductor for TEM is shown. In such specimens prepared with the technique, an unexpected periodic compositional modulation in the fine low-dimensional structure named Fine Low Dimensional Mo...
The technique for preparing cross-sectional specimen of semiconductor for TEM is shown. In such specimens prepared with the technique, an unexpected periodic compositional modulation in the fine low-dimensional structure named Fine Low Dimensional Mo...
1990, 12(6): 660-665.
Abstract:
A new formula (0.2/[(r0+h)ln (2h/r0)]) which is used to determine the shape factor of field emission tip is reported. By using of this formula, the calculation of with the tip shape of half spheroid, rotational ellipsoid, rotational paraboloid and ro...
A new formula (0.2/[(r0+h)ln (2h/r0)]) which is used to determine the shape factor of field emission tip is reported. By using of this formula, the calculation of with the tip shape of half spheroid, rotational ellipsoid, rotational paraboloid and ro...
