最新刊期
卷 ， 期 2 ， 1979
- 摘要：In this paper some improvements of DCCL full adder have been presented. They simplify the structure and reduce the clock pulses numbers to three. Two of them are the same as those of the ordinary two phase CCD.This is of great significance for combining CCD memory with DCCL to develop a monolithic signal processing system. A 2-word 2-bit adder has been fabricated using conventional MOS technology. Design considerations and experimental results are also given.2|19|1更新时间：2025-12-08
- 摘要：Errors of "single channel quantized" correlators are analysed. The total error due to finite observation and bias is dependent on the limited level of the quantized input signal.It is pointed out that there is an optimum limited level range within which the total error should be minimized and the minimum error is almost independent of the quantized number. However, the optimum limited level range is dependent on the quantized number. Taking advantage of the analysis of the bias, an unbiased correlator without multiplier is deduced for Gaussian process and sinusoidal wave with random phase. According to the error analysis of this correlator, it is concluded that the correlator without multiplier is rather simple and accurate and therefore is especially suitable for high frequency measurements.2|51|1更新时间：2025-12-08
- 摘要："Blind spots" is a well known phenomena occuring in the operation of the phased array "blind spots" means total reflection of input power Either of two conditions leads to total reflection, null of the radiation resistance or infinity of the admittance. This paper is to investigate these conditions. Through detail mathematical analysis, it is concluded that the null of the radiation is the only reason to cause total reflection i.e. ’’blind spots" . Besides, approximate conditions for existence of the null of the radiation resistance are give. We have also obtained some results different from those published in foreign literatures.4|105|3更新时间：2025-12-08
- 摘要：This paper deals with the concept of waveguide characteristic impedance. It tries to prove that the conventional concept of rectangular waveguide characteristic impedance is not fully applicable. The article presents new analysis of the principle and method used to define waveguide characteristic impedance and gives a reasonable definition of rectangular waveguide characteristic impedance. The new concept is applied to long range circular waveguide. The author also presents in this paper his view concerning tolerance of the cross section of rectangular waveguide.4|224|4更新时间：2025-12-08
- 摘要：In this article, solutions to characteristic equations of microwave ferrite microstrip isolators with one edge grounded have been given. Theoretical results have proved that this isolator is of cut-off type, and that it can be applied to other microwave ferrite devices.4|205|0更新时间：2025-12-08
- 摘要：In computer-aided design graphic processing and other areas, a variety of methods are widely used to obtain smooth curves by connecting discrete points. But the traditional methods have many limitations over distribution of given points, whereby the curves so produced are often not satisfactory enough and even incomplete. The verified method presented here is simple in calculation and of no limit over distribution of given points. Moreover, approximately ideal results are obtained for the cases that other methods do not provide complete calculation.2|232|0更新时间：2025-12-08
- 摘要：This paper presents a simple low loss simulated inductor using only two transistors and a few RC passive elements. In realization of simulated inductance, the alignment is eas ily effected by only varying the value of one of the resistors or the capacitor to get the correct inductance value. Moreover, the value of Q can be compensated to designed value. Theoretical analysis and experiments are well matched. Using this simulated inductor, high pass filter is constructed with good performance. Thus, it is proved suitable for engineering application.2|88|6更新时间：2025-12-08
- 摘要：One of the computer analysis methods of microwave circuits is presented and a general purpose analysis program named MCAP 1 for treelike microwave circuits is described. The program will automatically analyse the frequency response of the circuit having topologies and elements which are given by the user. The mathematical model and the essential parts of the program are explained.2|22|2更新时间：2025-12-08
- 摘要：The post-deflection acceleration lens with spherical mesh grid in oscilloscope tubes are calculated with the aid of a digital computer. The paraxial behaviour of the post-deflection acceleration lens of different geometries, such as the position of the focal point, the focal length and the scan magnification, are given by numerical calculations. Several experimental tubes have been measured and the theoretical analyses are given. The results are useful for design of CRT.2|19|1更新时间：2025-12-08
- 摘要：The coaxial system consisting of a rectangular cylinder concentric with an external circular cylinder is conformally mapped into a unit circle concentric with a closed curve which is nearly a circle, the characteristic impedances of this latter coaxial system are determined, and plotted for references.2|85|4更新时间：2025-12-08
- 摘要：This article presents a new idea of applying the principle of parametric amplification to the high power AM transmitter; illustrates the advantage of amplifying modulated wave by means of non-linear reactance; briefly discusses the high power varactor and a design for the electric circuit; and, by way of suggestion, makes up a particular draft.2|19|0更新时间：2025-12-08
- 摘要：Channel backscattering technique has been used to investigate pulsed laser and thermal annealing of<111>Si single crystals heavily implanted with Bi. Up to 900℃, thermal annealing residual damage amounts to 35%. But at 750℃, the ratio of substitution of Bi atoms maximizes to 50%. It drops down with the rise of temperature. Outdiffusion of Bi atoms occurs when the annealing temperature exceeds 625℃. However, after pulsed laser annealing, lattice damage almost completely disappeared and Bi atoms are redistributed. The concentration of Bi in Si may exceed its solid solubility by an order of magnitude. 95% of Bi atoms are in substitutional sites. Annealing at different energy has been compared too.2|20|1更新时间：2025-12-08
- 摘要：The experiment described in this paper have proved that XeF laser spectrum has a structure of rich vibration-rotation. Laser spectrums are dependent upon laser radiation conditions. Low pressure and high feedback is favorable for laser radiation of short wavelength from higher vibration state. In the experiment 162 laser lines have been observed, in which a set of Laser lines of 347 nm is of shorles wavelength of XeF Laser.2|13|1更新时间：2025-12-08
- 摘要：Since Dicke’s radiometer came into being, the total power radiometer has almost been eliminated from the high sensitivity radiometers. By means of further analysis, comparision and test, the paper shows that the gain stability of the total power radiometer can be greatly improved with the development of the electronic technology, and its sensitivity greatly enhanced. It is as good as Dieke’s radiometer.This paper introduces the design of the S-band total power radiometer which can be used for calibration of the noise source,and design of its IF amplifier. Recording curves of the stability and sensitivity of the radiometer are also given.2|120|0更新时间：2025-12-08
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