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1984 Vol. 6, No. 4

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Articles
AUTOMATIC GENERATION OF FINITE ELEMENT MESHES FOR THE REALIZATION OF RICATTI TRANSFORMATION
Sun Nai-Hua
1984, 6(4): 263-270.
Abstract:
Some computing techniques of the unimoment method for solving electromagnetic scattering problems of a dielectric cylinder with arbitrary cross section are investigated. Rieatti transformation is used in solving the set of linear equations for findin...
TRANSMISSION CHARACTERISTICS OF H11O MULTIMODE CIRCULAR BENDING WAVEGUIDE
Bao Yu-Shu
1984, 6(4): 271-278.
Abstract:
Higher order modes coupling characteristics in H11O, circular bending waveguide are analyzed according to the coupled wave equations, and coupling coeffecients of E01O, H21O, modes and their amplitudes are computed. A broad-band H21O, E01O mode filte...
POSSIBILITY OF USING THE PIN MODULATOR FOR LINEAR PULSE MODULATION
Zhao Jian-Qi
1984, 6(4): 279-286.
Abstract:
The current modulation characteristic of PIN modulator is analyzed, and its highly-nonlinear characteristic appearing on a linear coordinate is discussed. A circuit com-pensation method, in which a logarithmic network is mainly used, is presented for...
HIGH-FREQUENCY THERMAL NOISE IN MOSFET
Wang Li-Min
1984, 6(4): 287-301.
Abstract:
Starting from the current-voltage equation given by A. Van der Ziel (1976), a dif-ferential equation of the normalized fluctuation is developed. Expanding the Pourier transform of the fluctuation into a power series in the parameter j and solving the...
LINEAR FM MICROWAVE PHASE-LOCKED LOOP
Ruan Gui-Hua
1984, 6(4): 302-309.
Abstract:
A description of a phase-locked loop (PLL) is given, which is successfully used in an X-band linear PM inicrowave source with 6 s pules width, 30 MHz bandwidth and 1 ms FM pulse cycle. A phase-locked method is used to obtain the linear FM pulse signa...
NUMERICAL COMPUTATION OF THE EMISSION CURRENT IN AN ELECTRON GUN
Zhang Shui-Shun, Zhu Xie-Qing
1984, 6(4): 310-316.
Abstract:
A computer program for calculating emission current in an electron gun has been worked out, and good agreement between calculations and experiments has been achieved. The computation model is based on the statistical theory of thermal electron emissi...
RESEARCH ON SPIRAL STRIP LINE GENERATOR FOR OBTAINING MILLIMICROSECOND PULSED HIGH VOLTAGE
Yang Ling-Yun, Wang Yu-Hua, Zhang Qi
1984, 6(4): 317-325.
Abstract:
A basic principle of spiral strip line generator (SSLG) for obtaining millimicrose-cond pulsed high voltage is described. Design method of SSLG with a short switch is given. The SSLG s inner end is the high -voltage output end, and its outer end is g...
ANALYSIS OF THE PHYSICAL PROCESSES IN A THERMIONIC ENERGY CONVERTER
Zhang Er-Li, Jin You-Min
1984, 6(4): 326-338.
Abstract:
An investigation of the working state of the ignition type thermionie energy con-verter (TEC) is carried out and a physical model is established for analysis and calcu-lation. The region between the positive and the negative electrodes is divided int...
INVESTIGATION ON THE INTERACTION IMPEDANCE OF THE COUPLED-CAVITY STRUCTURE
Song Wen-Miao, Li Zhen-Huai, Chen Xiu-Lan, Wu Jing-Xian
1984, 6(4): 339-342.
Abstract:
The formula and program for calculating the total and negative first harmonie interaction impedance from the data of large perturbation measurement are given. This program is a part of the programs for CCTWT design.