最新刊期
卷 ， 期 5 ， 1989
- 摘要：The characteristics and processing methods of ELO （Epitaxial Lateral Overgrowth）, one of SOI technologies, have been described. Relatively all-round processing experiments have been done on the RF heated horizontal epitaxial reactor at atmospheric pressure. The influence of processing parameters on ELO film quality and defects has been emphatically investigated. Single crystal Si film has been overgrown on 10μm and 15μm SiO2 stripes respectively, and the structural characteristics of ELO film has been inspected and analysed. According to the peculiarity of ELO process, in situ etching of ELO film by HC1 has been proposed.3|100|3更新时间：2025-12-08
- 摘要：This paper briefly reviews the research progress and the main difficulties of CMOS ternary circuits. Based on this, the threshold comparison operation, transmission operation, union operation and the transmission function theory are introduced. The corresponding circuit design not only eliminates the passive elements, but also avoids a sandwich-like structure of the traditional ternary circuits. Computer simulations show that the circuits based on the transmission function theory have desirable characteristics.2|37|3更新时间：2025-12-08
- 摘要：In this paper macromodel for MOS operational amplifiers is developed. It can be used for the DC, AC and transient analyses in SPICE programs etc. Many important properties of MOS OP, AMP. are simulated in the model and its accuracies is higher enough than ever macromodel.2|47|0更新时间：2025-12-08
- 摘要：Refering to the tasks flow graph （TFG） produced by the procedure translatinga sequential program into a parallel form, based on an approximate assumption, an optimalscheduling algorithm for the TFG is presented by using the A algorithm. It gives an assurance that the system gain the maximal speedup.2|27|0更新时间：2025-12-08
- 摘要：A New heuristic algorithm for one dimensional logical gate placement is presented in this paper . In the algorithm,the rule of deciding gates sequence is to minimize the track number of each gate. The properties of the algorithm are: （1） It has no need of iteration. The CPU time for running the program is shorter than , （2） The necessary track number is no more than.2|15|0更新时间：2025-12-08
- 摘要：This paper systematieally introduees a complex frequency shift （CFS） theory and its realization for subband coding of images. Subband coding of images is a new field of high quality compression coding. Two-dimensional quadrature mirror filters （QMF） can be used to split images into subbands, but its arithmatic structure is rather complex. This paper develops CFS, a new method for subband cobing of images, and proves CFS’s feasibility and advantages theoretically and experementally. By comparison, the quality of reconstructed images by CFS is higher and its arithmatic structure is simpler, without the need of FFT type transformations as in QMF. This brings the CFS’s filters to have the same modules and operate quickly, and be convenient to hardware realization.2|26|0更新时间：2025-12-08
- 摘要：In this paper, an adaptive robust filter for noisy images is proposed. It possesses quite good filtering robustness and does not require a priori statistic distribution knowledge of the image. It removes a combination of signal-independent additive noise, signal-dependent noise and impulsive noise simulteneously. The filter also preserve the signal edges very well and is simple to implement.2|19|3更新时间：2025-12-08
- 摘要：A novel switched-capacitor (SO biquad for realizing high Q values is presented. The biquad has low sensitivity and can also obtain small total capacitance even though the high Q value and large sampling frequency specifications are given. The second-order lowpass, bandpass, highpass and notch filters realized by mears of this biquad ate given.2|11|1更新时间：2025-12-08
- 摘要：A simple inspection method for the analysis of general SC networks is presented. The method makes it possible to inspect and analyze multiphase SC networks with medium complexity with a rapid speed.2|23|0更新时间：2025-12-08
- 摘要：The general formulas of radiation from dipole antenna in a circular waveguide are given by means of dyadic Green’s function and field transformation. The waveguide length is semi-infinite. The reflection coefficient at the terminal plane is （?）. Length, feeding point, and orientation of the antenna in the waveguide are all arbitrary. As examples, the expressions of field for four specific cases are given and discussed.2|35|1更新时间：2025-12-08
- 摘要：The high frequency solution of radiation from slot on an infinite long, thin dielectric coated circular cylinder is obtained. It is expressed in simple GTD form and is continuous across the shadow boundary transition region. The normalized patterns are calculated via GTD solution. The effects of the dielectric coating thickness and dielectric constant εr are studied. The solutions given in this paper agree with those obtained from exact solution very well, and the calculations can be obtained at a high speed.2|21|2更新时间：2025-12-08
- 摘要：The arbitrarily curved 2-D radomes are analyzed by Complex Ray Theory. Some numerical results are given for ellipitical radomes, and the electromagnetic transmission characteristics of the 2-D radomes are investigated,2|52|5更新时间：2025-12-08
- 摘要：Chirped gaussian quasi-soliton propagation in nonlinear monomode optical fiber is numerically simulated by using slit-step Fourier transform method and compared with chirped soliton transmission in this paper. The results show that gaussian quasi-soliton optical source is more applicable than normal soliton optical source in fiber soliton communication in the presence of chirp.2|20|1更新时间：2025-12-08
- 摘要：A simple and convenient method is presented for analysing the effect of metal cladding on the optical characteristics of ridge waveguides. The computed result shows that this method yields a higher accuracy.2|61|4更新时间：2025-12-08
- 摘要：Random characteristics of path number of multipath propagation for land mobile radio environment are analyzed. The variation in path number is found to be a linear Bir-th-and-Death process. Its distribution law is theoretically derived. Some progress has been made in application of this distribution to the analysis of multipath delay and the simulation of mobile radio channel.2|113|6更新时间：2025-12-08
- 摘要：On the basis of hyperstable theory on time varying nonlinear system, a new adaptive IIR algorithm is proposed in this paper. The smooth coefficients which must be chosen in conventional hyperstable algorithm are not needed, and requirement that signal vector has a lower bound is not needed either. Simulations that confirm the utility of the new algorithm are included.2|27|1更新时间：2025-12-08
- 摘要：Fast transforms are important tools in digital signal processing. Their are two categories of fast transforms: The non-sinusoidal and sinusoisal transforms are simple in their structure and easy to be ’implemented. They were once highly evaluated and widely applied. However, sinusoidal transforms outperforms non-sinusoidal transforms in all aspects and received more attention recently. Fast algorithms are impotant for sinusoidal transforms. Algorithms for DFT have been constantly received attention. In addition, algorithms for DCT, DST, and DWT or DHT have become topics which many researchers are concerned with.2|317|8更新时间：2025-12-08
- 摘要：How to load the island wire antennas with impedance or resistance to obtain the travelling-wave currents is the problem which this paper deals with. The formulas are proposed to determine the antennas loading with impedance or resistance. Compared with the conventional trial-and-error method or Rahmat-Sarnii’s optimization procedure, these formulas make the numerical computations easy and need the least computing time. The results calculated by the formulas agree very well with the conventional methods.2|111|4更新时间：2025-12-08
- 摘要：Surface studies of LaB6 cathode failure has been carried out by using scanning Auger mi-croprobe model PHI-590. Results show that the failure mechanism is related to the severe containmina-tion of carbon and oxygen penetrating deep into the bulk and the relative inadequacy of Lanthanum atoms to Boron atoms. Two possible containminatlon sources are gas phase carbides in the vacuum chamber and surface diffusion of graphite which is the constituent of LaB6 cathode module.3|95|1更新时间：2025-12-08
- 摘要：The temporal response of transmission GaAs photocathodes has been analysed and calculated from the viewpoint of a photoelectron nonsteady state. And the measurement results taken by Phillips et al.（1982）have been interpreted theoretically. The computational results show that transmission GaAs photocathodes are good available for picosecond temporal response.2|36|2更新时间：2025-12-08
- 摘要：The algorithms with a high degree of optimization of the global routing for gate array and the channel routing are studied and proposed. The algorithms were written in FORTRAN and have operated on Dual 83/20 microcomputer as a part of the LSI/VLSI automation layout system.2|40|5更新时间：2025-12-08
- 摘要：In this paper, a biorthogonal mode eigenfunction method is presented and applied to the analysis of EM radiation and scattering problems. A number of numerical examples for analyzing wire an’ennas justifiy the correctness and effectiveness of this method.2|48|2更新时间：2025-12-08
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