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1987 Vol. 9, No. 6
Display Method:
1987, 9(6): 481-489.
Abstract:
In this paper, an efficient circuit vector space algorithm is presented for enumerating directed circuits of a directed graph, by which every directed circuit is generated by the ring-sum of a fundamental circuit (directed circuit or semi-circuit) de...
In this paper, an efficient circuit vector space algorithm is presented for enumerating directed circuits of a directed graph, by which every directed circuit is generated by the ring-sum of a fundamental circuit (directed circuit or semi-circuit) de...
1987, 9(6): 490-497.
Abstract:
A method is presented for a practical solution of irregular boundary problems. In this method, the irregular boundary is treated as a combination of several simple boundary value problems, which can be solved easily and exactly. To illustrate the app...
A method is presented for a practical solution of irregular boundary problems. In this method, the irregular boundary is treated as a combination of several simple boundary value problems, which can be solved easily and exactly. To illustrate the app...
1987, 9(6): 498-506.
Abstract:
Based on the fundamental solution of a two dimensional Helmholtz equation, the general principle of determing the cut-off frequencies of waveguides filled with two dielectric layers by using the boundary element method is discussed. In terms of the f...
Based on the fundamental solution of a two dimensional Helmholtz equation, the general principle of determing the cut-off frequencies of waveguides filled with two dielectric layers by using the boundary element method is discussed. In terms of the f...
1987, 9(6): 507-517.
Abstract:
Several equations of the electron-wave synchronous interaction in gyrotron oscillator are-derived, in which the effects of the guiding center drift and the phase of the RF field profile are considered. The electron efficiency is calculated for the se...
Several equations of the electron-wave synchronous interaction in gyrotron oscillator are-derived, in which the effects of the guiding center drift and the phase of the RF field profile are considered. The electron efficiency is calculated for the se...
1987, 9(6): 518-527.
Abstract:
The network equations of the cut-set voltage and loop current of the linear active network are formulated, and their solutions are given in terms of the submatrices of the original matrix of the network. Doing so, the matrix order, the storage space,...
The network equations of the cut-set voltage and loop current of the linear active network are formulated, and their solutions are given in terms of the submatrices of the original matrix of the network. Doing so, the matrix order, the storage space,...
1987, 9(6): 528-539.
Abstract:
After solving the boundary value problem of a waveguide junction, the exact design method of a wide-band duplexing filter for 4 and 6 GHz relay communication is obtained by using the concept of equivalent circuit. The theoretical results are in good ...
After solving the boundary value problem of a waveguide junction, the exact design method of a wide-band duplexing filter for 4 and 6 GHz relay communication is obtained by using the concept of equivalent circuit. The theoretical results are in good ...
1987, 9(6): 540-546.
Abstract:
A design technique for realizing high Q and/or fs SC bandpass filters with reduced capa-citor spread and total capacitance is proposed. The significant reduction of capacitor spread and toul capacitance is achieved through introducing the partial pos...
A design technique for realizing high Q and/or fs SC bandpass filters with reduced capa-citor spread and total capacitance is proposed. The significant reduction of capacitor spread and toul capacitance is achieved through introducing the partial pos...
1987, 9(6): 547-556.
Abstract:
In order to get better output formats for data compressors, the synchronization, efficiency and complexity of encoding and decoding, and the spreading range of error generated in transmission are analysed and discussed. Then theoretical analyses of t...
In order to get better output formats for data compressors, the synchronization, efficiency and complexity of encoding and decoding, and the spreading range of error generated in transmission are analysed and discussed. Then theoretical analyses of t...
1987, 9(6): 557-565.
Abstract:
A 1MV 6 Blumlein transmission line with water-dielectric is presented. Some basic parameters of this equipment are given. Major components and physical processes such as charging by Marx generater and fast pulse-forming, are theoretically analysed an...
A 1MV 6 Blumlein transmission line with water-dielectric is presented. Some basic parameters of this equipment are given. Major components and physical processes such as charging by Marx generater and fast pulse-forming, are theoretically analysed an...
1987, 9(6): 566-570.
Abstract:
The factors affecting the mixer noise figure are examined. A low noise figure mixer is ahieved by means of GaAs Schottky barrier diode, the cross field mixer structure and recovering the sum frequency. The measured SSB overall noise figure (including...
The factors affecting the mixer noise figure are examined. A low noise figure mixer is ahieved by means of GaAs Schottky barrier diode, the cross field mixer structure and recovering the sum frequency. The measured SSB overall noise figure (including...
1987, 9(6): 571-576.
Abstract:
A new method for accurate Zn diffusion in InP/InGaAs(P) at low temperature is put forward in order to keep the carrier profile in multilayers from redistribution. Several kinds of diffusion sources with different Zn contents are used in the experimen...
A new method for accurate Zn diffusion in InP/InGaAs(P) at low temperature is put forward in order to keep the carrier profile in multilayers from redistribution. Several kinds of diffusion sources with different Zn contents are used in the experimen...
