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1988 Vol. 10, No. 1

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Articles
COMPUTER-AIDED OPTIMUM SOLUTION FOR SCATTERING PARAMETER MEASUREMENTS OF TWO-PORT LOSSLESS NETWORK
Liang Changhong, Qiu Changxing
1988, 10(1): 1-7.
Abstract:
A new consrained eigenvalue method for scattering parameters measurements of two-port lossless reciprocal network is developed. The non-linear S-curve problem is easily transformed into a simple linear one by this method. The formulas are programmed ...
A LOOP CHARGE APPROACH FOR THE ANALYSIS OF SWITCHED-CAPACITOR NETWORKS WITH ARBITRARY VOLTAGE SOURCE INPUTS
Wu Chengguo
1988, 10(1): 8-16.
Abstract:
A loop charge approach is presented for the exact analysis of switched-capacitor networks containing capacitors, independent voltage sources, switches and nullors. t allows for arbitrary K-phase switching situations. And both arbitrary continuous tim...
NETWORK ANALYSIS OF EIGENVALUE PROBLEMS FOR MULTILAYER DIELECTRIC WAVEGUIDE CONSISTING OF ARBITRARY NUMBER OF LAYERS
Xu Shanjia
1988, 10(1): 17-24.
Abstract:
In this paper, the eigenvalue problems of multilayer dielectric waveguide consisting of arbitrary number of layers are solved by microwave network method. A general program with the function of computer graphics has been made for analyzing the disper...
NUMERICAL ANALYSIS OF A STRIPLINE PLANAR ANTENNA
Chen Jingguang, Shi Wenhong
1988, 10(1): 25-34.
Abstract:
Numerical results of the aperture field, pattern and directivity of a stripline planar antenna element are obtained by use of the moment method. The difficulty of singularities in integral equation is overcome by a simple shift of the testing functio...
LARGE SIGNAL SELF-CONSISTENT SOLUTION FOR OROTRON
Guo Kaizhou, Song Wenmiao
1988, 10(1): 35-41.
Abstract:
A large signal self-consistent solution of orotron for a simplified model is given. In this model the electron beam is modulated by the field and the field is excited by the electron beam inversely. A parameter Zc, which is very important for the eff...
STUDY OF GYROMONOTRON WITH A COMPOSITE PERIODIC MAGNETIC FIELD AND A COAXIAL CYCLOTRON ELECTRON BEAM
Wu Jingqiang
1988, 10(1): 42-52.
Abstract:
On the base of the works of the author (1985) and Liu Shenggang (1985), by using the linear kinetic theory, the gyromontron operating with a composite periodic magnetic field and a coaxial cyclotron rlectron beam is analysed in detail. The equations ...
THE TRANSVERSE GEOMETRIC EFFECTS IN A FREE ELECTRON LASER
Ying Runjie
1988, 10(1): 53-64.
Abstract:
The effects of the beam thickness and the conducting wall in a free electron laser with a linearly polarized wiggle magnetic field and an axial magnetic field are investigated within the framework of fluid-Maxwell equations. The growth rate of free e...
ORTHOGONAL OPTIMAL DESIGN FOR PHASE NOISE OF TRANSISTORIZED AMPLIFIER
Yu Daoheng, Feng Jinmei, Hu Qingjun
1988, 10(1): 65-71.
Abstract:
A formula of phase spectrum density for transistorized amplifier is given. In order to decrease phase noise, optimal design for parameters of amplifier by using Orthogonal Array Table (OAT) is completed. The experimental result shows that the frequen...
THE WAVE PROPAGATION IN A HOMOGENEOUS RANDOM MEDIUMTHE SOLUTION OF THE m-nth MOMENT EQUATION WITH DIFFERENT WAVE NUMBERS
Wang Zhensong
1988, 10(1): 72-79.
Abstract:
In the study of the problems related to the wave propagation in random media, the solutions of the moment equations are often needed. The m-nth moment equation with different wave numbers is a differential equation. In the present paper, the author c...
K BAND COAXIAL-TO-WAVEGUIDE TRANSDUCER
Lin Fuyin
1988, 10(1): 80-84.
Abstract:
A K band wideband coaxial-to-waveguide transducer is described, ts VSWR. is less than 1.1, and its insertion loss is less than 0.1 dB in the frequency range of 12.4 to 18 GHz, The measured results are in good agreement with the calculated ones.
SAW MINIMUM PEAK SIDELOBE FILTER FOR 15bit m-SEQUENCE PHASE CODED WAVEFORM
Chen Yujun
1988, 10(1): 85-88.
Abstract:
This paper presents the computation results of the minimum peak sidelobe filter (LP filter) for the 15bit m-sequence phase coded waveform with feedback connection [4, 3, 0] and initial condition 1001. The design of the filter resorts to linear progra...
A NEW TYPE MILLIMETER-WAVE GUNN OSCILLATOR
Miao Jingfeng, Chen Jinquan
1988, 10(1): 89-91.
Abstract:
In this paper, a new type millimeter-wave Gunn oscillator is proposed. The advantages of NRD waveguide and resonant-cap oscillator are employed in the design of the new oscillator. The experimental results show that this kind of oscillator has a good...
MICROWAVE MEASUREMENT OF COMPLEX DIELECTRIC CONSTANT
Zhang Jinbiao, Shao Fangwu
1988, 10(1): 92-96.
Abstract:
ABSTRACT In this paper, the formula given by S. Roberts and A. Von Hippel (1946) has been expanded. We make a program for calculating the phase constant of tested material which is put into the waveguide and for obtaining the multi-value solutions. T...