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1986 Vol. 8, No. 4

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Articles
CALCULATION OF THE RADIATION CHARACTERISTICS OF ANTENNAS ADJACENT TO A RECTANGULAR CYLINDER REFELECTOR BY GTD
Sun Naihua, Chen Hankui
1986, 8(4): 241-246.
Abstract:
In this paper, the horizontal radiation characteristics of dipole and loop antennas adjaeent to a rectangular cylinder reflector are calculated by the application of GTD. The magnitudes of the direct field, the reflected field and the diffracted fiel...
THE ASYMPTOTIC SOLUTION TO THE DIFFRACTION PROBLEMS OF THE ELECTROMAGNETIC WAVES BY A PERFECT CONDUCTOR
Gai Bingzheng
1986, 8(4): 247-254.
Abstract:
In this paper, the two dimensional problems of the diffraction of the electromagnetic waves by a perfect eonductor are discussed, using the Savin s mapping function of the perturbed form to the boundary. The general method and asymptotic formulas use...
A RAPID METHOD FOR DESIGNING 2-D DIGITAL FILTERS
Yi Kechu, Jia Yumin
1986, 8(4): 255-264.
Abstract:
The existing methods for designing two-dimensional digital filters are outlined anda new methodcomposite methodis proposed. This method has following advan-tages: (1) its computation cost is low; (2) it is easy to acquire lineur phase performance; ( ...
INTERACTIONS OF THE p-InP WITH Au-Zn, Ti/Au, Pd/Au Ti/Pd/Au AT INTERFACE AND THEIR ELECTRICAL PROPERTIES
Zhang Quicheng, Cheng Zongquan, Yu Zhizhong
1986, 8(4): 265-271.
Abstract:
In this report, interdiffusion of the p-IuP with Au-Zn Ti/Au, Pd/Au, and Ti/Pd/ Au at interface has been investigated by Auger electron spectroscopy and electron spectroscopy for chemical analysis. The surfaco morphology for the heat treatment are ob...
MOS CONSTANT CURRENT QUASISTATIC SMALL-SIGNAL TECHNIQUE FOR DETERMINATION OF LOW INTERFACE STATE DISTRIBUTION OF Si/SiO2 SYSTEM
Tan Changhua, Xu Mingzhen, Li Shudong
1986, 8(4): 272-278.
Abstract:
A new technique called MOS constan t current quasistatic small-signal technique is given. Using this technique the quasistatic capacitance, high frequency capaeitanee and semiconductor surface potential of MOS capacitor can be measured simultaneously...
A MICROWAVE SYSTEM FOR MEASURING HUMIDITY OF CLASTIC DIELECTRIC ON CONVEYER WITH PROGRAMMABLE COUNTER
Huo Zhendi, Fu Shouchun
1986, 8(4): 279-286.
Abstract:
A sensitive linear sensor, which is suitable for ineasuring humidity of elastic dielectric on conveyer, is presented. A programmable counter is used to improve the measuring accuracy. The dynamic test of this system has been completed on the conveyer...
STUDY ON EMISSION PROPERTIES OF La-WC CATHODE AND ITS RESISTANCE TO POISONING OF OIL VAPOUR
Wang Yongshu, Deng Yaode, Wang Qi
1986, 8(4): 287-292.
Abstract:
In this paper, an assupmtion to explain emission properties of the La-WC cathode and its resistance to poisoning of oil vapour is presented and was demonstrated by experiments. In the operating temperature range of the La-WC cathode, lanthanum would ...
CALCULATION OF THE CAPACITANCE OF A RECTANGULAR COAXIAL STRIP TRANSMISSION LINE
Ma Xikui
1986, 8(4): 309-315.
Abstract:
The field matching method for calculating the capacitance of a rectangular coaxial strip transmission line is presented. The method is not only simple, easy to use and commonly adaptive but also efficient for reducing the calculating error.
ESTIMATION OF THE EFFECT OF OSCILLATOR INSTABILITIES ON SIGNAL PROCESSING BY MEANS OF MONTE CARLO COMPUTER SIMULATION
Guo Yanying
1986, 8(4): 316-320.
Abstract:
The majority of literatures dealing with digital signal processing ignore the effect of oscillator instabilities. This will in some cases lead to an inadmissible design mistake.In this paper, Monte Carlo computer simulation is used to estimate the ef...
Discussions
SOME POINTS ON IMPULSE RESPONSE OF APERTURE ANTENNAA DISCUSSION WITH HU HANNAN
Shen Haoming
1986, 8(4): 293-302.
Abstract:
The limitation of far region Fresnel-Kirchhoff formula in transient problem is diseussed. Under the excitation of an impulse, the radiation field has to be evaluated in terms of precise Fresnel-Kirchhoff formula; otherwise, some important transient f...
THE IMPLICATION AND THE APPLICABLE REGION OF THE IMPULSE RESPONSE OF APERTURE ANTENNAS IN THE FAR-FIELD REGIONCONCURRENT COMMENT ON SOME POINTS ON IMPULSE RESPONSE OF APERTURE ANTENNA
Hu Hannan
1986, 8(4): 303-308.
Abstract:
In this paper, it is clarified that as the term, the impulse response of aperture antennas in the f ar-field region, is used, the far-field region is referred to the actual signal exciting an antenna, not to the Dirac delta function exerted on an ant...