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1993 Vol. 15, No. 5
Display Method:
1993, 15(5): 449-457.
Abstract:
A new concept, the generalized inverse group (GIG) of signal, is firstly proposed and its properties, leaking coefficients and implementation with neural networks are discussed in this paper. Theoretical analysis and computational simulation show tha...
A new concept, the generalized inverse group (GIG) of signal, is firstly proposed and its properties, leaking coefficients and implementation with neural networks are discussed in this paper. Theoretical analysis and computational simulation show tha...
1993, 15(5): 458-465.
Abstract:
A fast separable approach based on a cross array is presented which has coarsegrained parallelism. Its computational load is far less than that of the two-dimensicmal direct processing method and other existing separable approaches. In order to compe...
A fast separable approach based on a cross array is presented which has coarsegrained parallelism. Its computational load is far less than that of the two-dimensicmal direct processing method and other existing separable approaches. In order to compe...
1993, 15(5): 466-474.
Abstract:
A new mathematical model, the linear homogeneous equations with polynomial coefficients for describing the synthesis problem, is presented in this paper. It gives a nature approach ro generalize the linear synthesis to nonlinear case. This method is ...
A new mathematical model, the linear homogeneous equations with polynomial coefficients for describing the synthesis problem, is presented in this paper. It gives a nature approach ro generalize the linear synthesis to nonlinear case. This method is ...
1993, 15(5): 475-481.
Abstract:
Based on the fact that it has nodifficulty to achieve ultra-low Sidelobe for Doppler filiter, a simplified auxiliary channel approach, whose performance is the same as that of Klemm s method but the reduction ofcomputation load is great, is described...
Based on the fact that it has nodifficulty to achieve ultra-low Sidelobe for Doppler filiter, a simplified auxiliary channel approach, whose performance is the same as that of Klemm s method but the reduction ofcomputation load is great, is described...
1993, 15(5): 482-486.
Abstract:
A design technique for high-pass filters using OTA differentiator is presenred. By means of the leapfrog synthesis of the active filters, the OTA-C realization of the highorder high-pass filters is built up. The filter is compatible with MOS process....
A design technique for high-pass filters using OTA differentiator is presenred. By means of the leapfrog synthesis of the active filters, the OTA-C realization of the highorder high-pass filters is built up. The filter is compatible with MOS process....
1993, 15(5): 487-492.
Abstract:
The differential measuring mode for minority carrier diffusion length of aSi:H film by SPV technique can eliminate the influence of back juction of the sample. This paper analyses mathematical model of such mode, deduces formula for practical use, an...
The differential measuring mode for minority carrier diffusion length of aSi:H film by SPV technique can eliminate the influence of back juction of the sample. This paper analyses mathematical model of such mode, deduces formula for practical use, an...
ANGULAR SPECTRUM PROPERTY OF SPONTANEOUS EMISSION IN A TWO-DIMENSIONAL UNDULATOR FREE-ELECTRON LASER
1993, 15(5): 493-499.
Abstract:
The angular spectrum of spontaneous emission in a wo-dimensional undulator free-electron laser is analyzed theoretically. Numerical calcularion shows that the s-th harmonic spontaneous emission power density can be greatly enhanced by using a two-dim...
The angular spectrum of spontaneous emission in a wo-dimensional undulator free-electron laser is analyzed theoretically. Numerical calcularion shows that the s-th harmonic spontaneous emission power density can be greatly enhanced by using a two-dim...
1993, 15(5): 500-505.
Abstract:
The cyclotron autoresonance maser (CARM) has been developed which is a high power device operating at short wavelength. In this paper, the basic principle of CARM is described, and the design method and numerical calculation results for Bragg cavity ...
The cyclotron autoresonance maser (CARM) has been developed which is a high power device operating at short wavelength. In this paper, the basic principle of CARM is described, and the design method and numerical calculation results for Bragg cavity ...
1993, 15(5): 506-511.
Abstract:
A Cassegrain antenna with frequency seletctive reflector is introduced, and the measured radiation properties and radar cross-section (RCS) of the antenna are give and discussed. In comparison with ordinary metailic reflector, this antenna can obtain...
A Cassegrain antenna with frequency seletctive reflector is introduced, and the measured radiation properties and radar cross-section (RCS) of the antenna are give and discussed. In comparison with ordinary metailic reflector, this antenna can obtain...
1993, 15(5): 512-518.
Abstract:
A differential equation for the reflection coefficient of a continuously varied medium is derived by using a network theory, from which an approximation for reconstructing the permittivity profiles is obtained in closed form. Furthermore, the equival...
A differential equation for the reflection coefficient of a continuously varied medium is derived by using a network theory, from which an approximation for reconstructing the permittivity profiles is obtained in closed form. Furthermore, the equival...
1993, 15(5): 519-522.
Abstract:
A current-mode MOS neuron circuit with 4-bit programmable weights is presented using CMOS tetchnology. The weights of the neuron have high resolution and also can easily be digitally stored. The resolution can be extended into higher levels such as 8...
A current-mode MOS neuron circuit with 4-bit programmable weights is presented using CMOS tetchnology. The weights of the neuron have high resolution and also can easily be digitally stored. The resolution can be extended into higher levels such as 8...
1993, 15(5): 523-526.
Abstract:
A new algorithm for generating k-ary M sequences is given. Not the classical method that the main cycle is extended by joining to it one cycle but a new method that the main cycle is exended by joining to it a subset of cycles is used in the algorith...
A new algorithm for generating k-ary M sequences is given. Not the classical method that the main cycle is extended by joining to it one cycle but a new method that the main cycle is exended by joining to it a subset of cycles is used in the algorith...
1993, 15(5): 527-531.
Abstract:
A new universal tunable high-order OTA-C filter based on a signal-flow-graph realization of the transfer function is designed. The filter needs only OTAs and grounded capacitors, and it is convenient for realization with MOS technology. Experimental ...
A new universal tunable high-order OTA-C filter based on a signal-flow-graph realization of the transfer function is designed. The filter needs only OTAs and grounded capacitors, and it is convenient for realization with MOS technology. Experimental ...
1993, 15(5): 532-535.
Abstract:
Based on a set of reverse recovery charge curves and a set of reverse energy loss curves, a new method for calculating the reverse recovery current parameters of the thyritor turn off model is given, In a wide range of di/dt and IF the error of this ...
Based on a set of reverse recovery charge curves and a set of reverse energy loss curves, a new method for calculating the reverse recovery current parameters of the thyritor turn off model is given, In a wide range of di/dt and IF the error of this ...
1993, 15(5): 536-540.
Abstract:
The irradiation defects in Si wafer introduced by fast neutron can be used to act as nuclei of oxygen precipitation. These defeccts accelerate the formarion of oxygen precipitation in denuded region as well as getting irapurity region, thus haze dtfe...
The irradiation defects in Si wafer introduced by fast neutron can be used to act as nuclei of oxygen precipitation. These defeccts accelerate the formarion of oxygen precipitation in denuded region as well as getting irapurity region, thus haze dtfe...
1993, 15(5): 541-545.
Abstract:
The dispersion and loss characteristics of groove guide with arbitrary shapes are analyzed with high-order finite element method. The effectiveness and the reliability of the method are verified by the experiments and the results obtained by other me...
The dispersion and loss characteristics of groove guide with arbitrary shapes are analyzed with high-order finite element method. The effectiveness and the reliability of the method are verified by the experiments and the results obtained by other me...
1993, 15(5): 546-550.
Abstract:
The propagation characteristics of circular waveguide filled with multilayer chiral tnedia is analyzed by recursive eighenfunction method in this paper. A recursive formula for dispersion characteristics of circular waveguide filled with N-layer chir...
The propagation characteristics of circular waveguide filled with multilayer chiral tnedia is analyzed by recursive eighenfunction method in this paper. A recursive formula for dispersion characteristics of circular waveguide filled with N-layer chir...
1993, 15(5): 551-555.
Abstract:
Resonant characteristic of eccentric ring microstrip antennas has been studied using point-matching moded. The formulation can be appplied to some specific cases, for example, circular, circular ring and eceentric circular ring patch antenna. The goo...
Resonant characteristic of eccentric ring microstrip antennas has been studied using point-matching moded. The formulation can be appplied to some specific cases, for example, circular, circular ring and eceentric circular ring patch antenna. The goo...
1993, 15(5): 556-560.
Abstract:
The complex ray theory for three-dimensional space is researched, from which the method of complex ray tracing for arbitrary configuration in three-dimensional space is derived, and the beam transmission properties of a rotating parabolic radotne are...
The complex ray theory for three-dimensional space is researched, from which the method of complex ray tracing for arbitrary configuration in three-dimensional space is derived, and the beam transmission properties of a rotating parabolic radotne are...
