最新刊期
卷 ， 期 1 ， 1986
- 摘要：Based on the practice of introducing array processing into YH-FORTRAN, the basic expansion of FORTRAN is proposed for high-speed numeric calculation. The idea to deal with the problems which lower execution efficiency of the object code is described, while some of USA’s array processing proposals are surveyed.2|35|6更新时间：2025-12-08
- 摘要：An analysis of coupled cavities in TWT is presented. The analysis employs field equivalence principle in conjunction with Green’s function techniques. The resulting operator equations are solved by the moment method. The charateristics of the coupled cavities are expressed in terms of generalized admittance matrices which are functions both of frequency and dimensions of the system. The results of calculation performed with the aid of an electronic computer agree quite well with those of cold test measurements.2|122|32更新时间：2025-12-08
- 摘要：A new hybrid integrated circuit without isolation, DYLMOSIC, has been developed. By increasing and adjusting the technology, P channel MOS transistors and bipolar transistors with large β and small β value for the linear AND-OR gate in DYL are developed on the same wafer, based on the self-isolation characteristics among the linear AND-OR gates, the main logic unit in DYL, and MOSIC. Using the hybrid integrated technology, a inverter unit is constructured by bipolar and MOS transistors on the same N type silicon wafer. The benefits of DYLMOS hybrid integrated circuits are: simple and compatible technology with the linear AND-OR gate in DYL, high input and low output impedance and compatible level with DYL and TTL circuits.2|28|5更新时间：2025-12-08
- 摘要：The misalignment of the rotationally symmetrical electron optical system caused by manufacturing and assembling tolerance is an important limitation factor for further improving the image quality. The finite-difference method is first used to calculate the three-dimension field to analyze the problem of the misaligned electron lense. The influence of the misalignment of equi-diameter cylinder bipotential immersion electron lense on image quality are given. Experimental tubes are also manufactured. It is shown that the theoretical computations are in good agreement with experimental values.2|46|1更新时间：2025-12-08
- 摘要：In the investigation of a nonlinear forced RL-varactor circuit, it is discovered that besides the period-doubling route to chaos, the system has also the frequency locking ability to its subharmonics. A frequency entrainment diagram of the system is obtained experimentally in a large scale of parameters, with a structure not found in literatures. The simplest model of the varactor is used to simulate the system. The bifurcation diagram and the phase-space orbits obtained from the computer agree well with those taken from the experiments. The mechanism of the chaos appearance is also studied. Possible applications of some results are presented.4|132|5更新时间：2025-12-08
- 摘要：An approximate formula for the surface field profile of a p-n+ junction with field plate is derived. It consists of two terms, following exponential law with the distance from either end of the plate. Thus, the peaks of the field at both ends of the plate can be well understood. A new field plate structure for optimizing the profile is also proposed. All the theoretical results of the cases studied here are in fair agreement with the computer results.5|350|58更新时间：2025-12-08
- 摘要：A new circuit is given for measuring scattering parameters of any two-port microwave network by means of a single six-port reflectometer. Based on the wave superposition theory and the theory of equivalent circuit, a new method of calibration and measurement is described.2|19|2更新时间：2025-12-08
- 摘要：The constrained optimization method-complex method described in this paper is better than the simplex method for design of electron optical systems. This method is beneficial to making optimal automatic search and can ensure that the computed results will satisfy the design requirement. In the complex method as well as simplex method, it is not necessary to know the explicit functional relation between the objective function and the searching parameters. Comparing with other optimization methods, the complex method and simplex method have significant advantage in the optimization design of electron optical systems.2|39|5更新时间：2025-12-08
- 摘要：A new hyperstable adaptive recursive filter algorithm is proposed. The algorithm can avoids selection of error smoothing coefficients, and is shown to be convergent provided that filter input-output is bounded certainly. The adaptive gain and time constant are discussed.2|38|2更新时间：2025-12-08
- 摘要：The following new ideas are presented for use in on-line fault diagnosis of analog integrated circuits.1. The number of fault elements in an analog circuit can be evaluated from the measured data upon the limited number of accessible terminals.2. The dependent relation between any two multiple-fault sets can be classified in two kinds: the mutual dependence and the single dependence. The routine of on-line fault diagnosis can be accelerated with the use of mutual dependence.3. The idea of effective measuring ports is helpful to the topological judgement of diag-nosability of certain multiple-fault set besides the examination of the existence of loops and cutsets among the fault elements.4. The uniqueness of the values of certain existing fault elements calculated from the measured data upon the different measuring ports can be used to distinguish the actual fault from the guessed fault.Program based on the algorithm derived from the above ideas has been proved with success.3|32|3更新时间：2025-12-08
- 摘要：The problem of statistical computation of compression ratio for zero-order predictor with floating-aperture algorithm is considered. Markov Chain is proposed as the model of input process. By this, analytical expressions are derived for the mean and mean-square value of compression ratio, and then a simple and convenient algorithm is developed for the computation of these factors. Finally, several numerical results are given to demonstrate the effectiveness of this approach.2|15|0更新时间：2025-12-08
- 摘要：A theoretical formula to explain the intermodulation noise, which is produced by general transmission characteristics with higher terms in an analog microwave trunk, is obtained by use of the Bessel function expression. The usual equations for calculating the intermodulation noise in engineering practice are special cases of the presented formula. To analyze a general transmission characteristics with higher terms in microwave trunk, the least-squared principle is recommended and satisfactory results are obtained. Therefore, a good way to calculate the intermodulation noise in practical transmission systems and to analyze effects of the transmission characteristics in trunk on the FM multiplex telephony signal of radio relay systems are provided.2|11|1更新时间：2025-12-08
- 摘要：A new magnetizing concept of time-harmonic change is introduced and an expression on ferrite permeability tensor μ （r, θ, Ωt） is derived, which is variable with time t and coordinate components r, θ. Under the condition of quasi-static state magnetizing, the process of propagation of electromagnetic wave in a ferrite circular waveguide, which is acted by a transverse rotating field, is discussed. It shows that the periodically coupled waves are caused between two dominant propagating modes, H11 odd-mode and H11 even-mode. The coupling coefficient c and the propagating coefficients βo and βe are obtained, and they are variable with time t. Finally, an approximate structure to realize ferrite rotating-wave-plate is presented, and its application is also explained briefly.2|80|5更新时间：2025-12-08
- 摘要：A complex scattering matrix of mixer’s diode and a signal flow graph of microwave mixer are given. A new method for it’s simplification under matching condition is proposed. This make it possible to simplify the signal flow graph of microwave mixer extremely.2|44|1更新时间：2025-12-08
- 摘要：The five-layer structure model for Chinese information processing systm is proposed, and the features of its input method are discusses. Also presented are the idea of general purpose Chinese character input coding module and the technical feature of natural input method--character recognition and speech recognition briefly.2|51|4更新时间：2025-12-08
- 摘要：A survey on the application of microcomputers in the field of microwave measurement and instrumentation （in other words, the techniques of computer aided microwave measurement） is presented. More attention is paid to the two problems of intelligent instrument and automated-test system （ATS）. As an example of ATS, the organization of instruments-and application of microcomputers in both Time-Domain Reflectometer （TDR） and Dual-Six-Port Automatic Network Analyzer （DSPNA） are described.2|25|1更新时间：2025-12-08
- 摘要：The experimental method and results for rapid annealing of Boron ion implanted Si wafers by a large area electron beam are presented. The analysis with skeet resistivity, X ray diffraction, laser Raman spectroscopy, and SIMS indicates that this technique compares favorably with the conventional furnace annealing, giving advantages of low temperature rapid annealing and little diffusion of the dopants.2|39|2更新时间：2025-12-08
- 摘要：The variation of the dangling bonds with annealing temperature in a-Si: F produced by ion implantation is measured by EPR. The minimum of the integrated absorption A is located in the same temperature range as that of the room temperature conductivity of a-Si: F films annealed in the same way. EPR assessment of a-Si: F confirms it great thermal stability compared to a-Si: H, opening prospects for a potentially better material for device fabrication.2|18|0更新时间：2025-12-08
- 摘要：A new structure of the phase-moved network and a simple method for designing a wideband 3dB hybrid ring circuit are presented. The circuit has better electrical performance over 40% frequency band and can withstand higher power. It is easier to fabricate and has a wider field of applications.2|243|1更新时间：2025-12-08
- 摘要：This paper deals with period doubling, period- adding and chaotic behavier in the unijunction transistor second order circuit. The mechanism of bifurcation and chaos is discussed.2|43|5更新时间：2025-12-08
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