最新刊期
卷 ， 期 3 ， 1988
- 摘要：The general-purpose interactive editing system, named GIES, is a user interface management system of the kernel software engineering environment BETA-85. By using an abstract rooted network data model, GIES uniformly organizes and stores all kinds of structured objects processed by the environment system, and provides a set of uniform, general purpose full-screen editing system commands in order that users can process and treat each of the environmemt components effectively by using the same set of editing commands and/or processing operations with a concise and friendly user interface. The basic design strategies, system organization, and implementation of GIES are described in the paper.2|25|0更新时间：2025-12-08
- 摘要：In this paper, a simple theoretical formula for the distribution of electrical field and electrical potential of the planar n+ - p junction with floating field limiting ring-s（FFLR） is presented. This equation is deduced from the cylindrical symmetry solution of Poisson’s equation in combination with the boundary condition of the field limiting ring, with the assumption that the barrier of majority carriers formed around the rings is lower than leV and can be neglected. The theoretical design formula of the FFLR is also given. The conformity of theory with the result of experimental or mathematical analysis is satisfactory for practice.2|625|79更新时间：2025-12-08
- 摘要：In this paper the mode conversion and propagation behaviours are analyzed systematically and a strict calculation of conversion between corrugated-wall hybrid modes and smothed-wall modes is made. Moreover, the effect of the TE12 mode in section C is also taken into consideration. By using the method of optimization, eight parameters including the three parameters of the corrugated-waveguide are selected optimally. It is shown that the amplitude and phase radiation patterns in E and H planes are very approximately equivalent for both 4/6 GHz bands. It can be used as the ideal feed of antenna for satellite earth-station.2|57|0更新时间：2025-12-08
- 摘要：The general analytic formulas for a new miniature matched load are discussed in this paper. The quasi-periodical property of reflected coefficient modulus with frequency is investigated. It is shown that narrow-band matching performance can be obtained with both pure-electric loss material and ferrite material. Furthermore, wide-band performance can be also obtained with judicious choise of material parameters. Some examples are given.2|37|2更新时间：2025-12-08
- 摘要：Two implementation methods of an adaptive antenna array system with four elements, which works for a TDMA signal, are proposed in this paper. Loop noises in Gram-Schmidt orthogonalized network and in weighting broadband network are analyzed and approximated separately. Computer simulation shows that the performance of SINR is improved for nearly 40 dB under the circumstances of strong interferences.2|15|0更新时间：2025-12-08
- 摘要：A new method of amplitude snadng for near-field pattern is studied in tnis paper. In principle, it can be applied to any type of arrays. Using this method, not only the si-delobe of any regions which are restrained by the condition of Fresnel region can be restricted to a certain level, but also the pattern of the main beam can be reduced to the narrowest or near narrowest. Moreover, the position of sidelobes and zeroes and the relative height of any sidelobes can be changed by using this method. Numerical calculation on equally spaced linear point array shows that both lateral resolution and range resolution are increased.2|29|1更新时间：2025-12-08
- 摘要：<正> 清华大学研制出的能进行准动态图形图象和语音实时传输的分布式以太网络综合系统于1988年4月5日在北京通过鉴定。 该系统是清华大学计算机系在以太网环境下自行开发的。它包含的五个子系统在没有集中式服务器的情况下,具有对话、电报、广播式通信、图形传输、文件传输、512×512点、2|10|0更新时间：2025-12-08
- 摘要：Based on a research on binary comparison operations made by the authors, the comparison operations are extended into the ternary logic field further. Some definitions and properties of ternary comparison operations are discussed, and the MOS circuit realizations according to the comparison functions of MOS transistor elements are proposed. The design examples have proved that the capability of processing logic functions is improved by use of the ternary comparison operations, and it may lead to a simpler expression and circuit realization for a ternary function.2|73|2更新时间：2025-12-08
- 摘要：A fast search method for the minimization of T-gate realization of multiple-valued logic is introduced. In order to obtain an optimal or near optimal order of T-gate control, by means of the conventional method, it is necessary to try n! times for an n-variable function, while by the conception together with the designed mould plate introduced in this paper, just a single process of operation is sufficient to get an optimal or near optimal result. Finally, the mixed control is discussed and the corresponding mould plate is proposed.2|21|5更新时间：2025-12-08
- 摘要：The design of a vector quantizer for video signals is presented. The performance of the system is simulated on the computer and discussed. The hardware architecture is also described and the comparison between the simulation and the realization is made. It is demonstrated that the vector quantizer for video signals is realizable and efficient. Finally the application of this vector quantizer to a narrow-band video communication system is presented.2|22|1更新时间：2025-12-08
- 摘要：The paper demonstrates that the introduction of certain auxiliary variables is beneficial to lower the nonlinearity of diagnosis equation in the parameter identification approach to analog fault diagnosis. A system of such two order nonljnearity diagnosis equations is derived with its Jacobian matrix having a regular structure, thus a partitioning algorithm based on the block QR decomposition of a matrix is proposed. A video amplifier in [ 5 ] is used as an example for comparison and the results show that our diagnosis equation and algorithm are novel.4|32|2更新时间：2025-12-08
- 摘要：Based on the site-binding model combined with the operating condition of ISFET, the theoretical and experimental results show that the interface behavior between insulator and solution dominate the performances of ion sensors. On the other hand, the effects of the interface between insulator and bulk semiconductor also should not be ignored.2|47|2更新时间：2025-12-08
- 摘要：A numerical method for modeling fin-line septum, is presented. The method wascombined with the mode-matching method and the multiport-network connetion technique for determing the generalized scattering matrix of the fin-line septum with a finite length. Then the mathematical model for the equivalent circuit parameters was derived by the curve fitting technique.2|21|6更新时间：2025-12-08
- 摘要：A new method is presented for the design of biquadratic SCF. In this method, the circuit structure and element values are determined by matching combination. The method is of simplicity, clear physical concept and convenience for computer aided-design. The insen-sitivity to parasitic capacitance is reserved. The method can also be applied to the design of all kinds of biquadratic SCF.2|19|3更新时间：2025-12-08
- 摘要：The solution uniqueness of linear time-invariant networks is discussed. The networks are composed of passive resistors, capacitors, inductors, coupled inductors with positive definite inductance matrix and independent power supply. The conditions under which the above mentioned nerwork possesses unique solution are derived.2|24|2更新时间：2025-12-08
- 摘要：Fault screen method, a new method for fault location in analog circuits, is p-resented. By solving a set of low order homogeneous linear equations to obtain a optimum stimulus, and by checking the screened branches in the nominal network excited by this optimum stimulus, the faulty branches can be located. Taking the tolerances of the nonfaulty elements into consideration, some techniques for fault location are discussed.2|42|29更新时间：2025-12-08
- 摘要：The influence of the coupling condition of doubletuned inductive coupling phase modulator on the modulatory linear of phase modulator is introduced, and the optimum condition of modulatory linear of double-tuned analogous phase modulator is derived by mathematic method and proved by computer aided analysis. The practicality of the optimum linear theory is verified through experiments.2|34|0更新时间：2025-12-08
- 摘要：In this paper a short review of world IC technology progress and a discussion on main technical subjects in this field are given. Some suggestions for development of this technology in our country are also made.2|40|0更新时间：2025-12-08
- 摘要：Two general theorems on the construction of the orthogonal matrices are proven. Various new orthogonal matrices may be constructed from known orthogonal matrices by using these two theorems. Some previously reported methods of construction of orthogonal transforms may be obtained as results of these two theorems.2|75|4更新时间：2025-12-08
- 摘要：A bilinear algorithm for the fault diagnosis of non-linear circuits with inaccessible nodes is developed by adopting concepts of pseudo-fault and non-linear static parameters. The reliability of the method is shown by a practical example2|21|1更新时间：2025-12-08
- 摘要：The design idea of an intelligent null indicator which is based on least square regression method, is discussed and the mathematic model of regression curve of an auto-gain controlled amplifier system is derved. Discussion about the design method and its approximate errors is given. The fact that this kind of null indicator, which is based on software, has good retolution and high accuracy is shown by the results of pualification.2|10|0更新时间：2025-12-08
- 摘要：Electrostatic electron cyclotron maser （EECM） is studied and the expression of a great kind of specific singularity is derived by using semi-classical theory approach. The results show that the conclusion obtained in this paper has a general meaning. Therefore the unsteadiness relateted to the singularity is predicted. It seems that semi-classical theory is a useful way for studying EECM.2|13|1更新时间：2025-12-08
- 摘要：In this paper the method for constructing FH code sequences presented by P. V. Kumar is further discussed, the linear span of the sequences is analyzed and the design method that guaratees FH code sequences to have large linear span is presented for the second code sequence.2|37|4更新时间：2025-12-08
- 摘要：A new statistical process and device simulator M1CSPADS is described and the especial emphasis is put on its methodlogy, structure and characteristics. The simulator produces statistical results of model parameters of typical semiconductor devices manufactured in various fabrication processes. The resulting model parameters can be used in the SPICE circuit analysis program directly. An example which uses the simulator to analysis the siatistical relation of threshold voltage of MOSFET to channel implanted dose is presented.2|14|0更新时间：2025-12-08
- 摘要：With the aid of network matrix theory the effect of slight ellipticity of the circular waveguide on the phase and amplitude of the feed systems is analyzed. To improve the circular polarization parameters of the feed systems, a simple and effective method, making the circular waveguide slightly approachs the one with expected quesi-ellipticity, is developed further. It is proved through experiments that the method is highly effective.2|38|3更新时间：2025-12-08
- 摘要：A wireless data network using spread spectrum communication by orthogonal sequences is proposed. The relationship between the spread spectrum code and the network parameter is presented. It is also pointed out that the width of ring-zone area will be not limited by using the time delay compensation technique.2|30|0更新时间：2025-12-08
- 摘要：Nonlinear numerical analysis was made in detail for an electron cyclotron maser with complex focusing-fields. The calculation shows that the radial electrostatic field substantially changes the az-imuthal bunching of electrons.2|17|0更新时间：2025-12-08
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