# Proceedings of the IEE - Part B: Radio and Electronic Engineering

## Filter Results

Displaying Results 1 - 25 of 26
• ### Rating of speech links and performance of telephone networks

Publication Year: 1959, Page(s):65 - 76
Cited by:  Papers (2)
| | PDF (1951 KB)

A serious problem which occurs in the development of large or otherwise costly speech communication systems (the term includes, but is not confined to, public telephone systems) is the achievement of a consistent overall design that is economical and yet never requires users to exert unreasonable amounts of mental or vocal effort in conversation. The ideal thus simply expressed is notoriously diff... View full abstract»

• ### Assessment of speech communication links

Publication Year: 1959, Page(s):77 - 89
| | PDF (2168 KB)

Testing methods, such as articulationÂ¿, immediate appreciationÂ¿, etc., at present available for providing a direct measure of the performance or effectiveness of a link for speech communication are not individually or even collectively applicable over any wide ranges of levels of performance or types of link. Many practical links fall outside the range over which these methods are reliable, an... View full abstract»

• ### Discussion on 'Assessment of speech communication links' and 'Rating of speech links and performance of telephone networks' before the Radio and Telecommunication Section, 27th October, 1958

Publication Year: 1959, Page(s):90 - 92
| PDF (566 KB)
• ### The authors' reply to the discussion on "Assessment of speech communication links" and "Rating of speech links and performance of telephone networks"

Publication Year: 1959
| PDF (184 KB)
• ### The use of dispersive artificial dielectrics in a beam-scanning prism

Publication Year: 1959
Cited by:  Papers (2)
| | PDF (1170 KB)

The direction of a radiated beam can be altered by passing it through a prism. If the prism material is dispersive, the final direction is frequency sensitive and beam scanning can therefore be achieved by frequency modulation. Two types of dispersive artificial dielectric are considered for use in such a prism, one consisting of an array of rods, and the other of an array of sheets containing a p... View full abstract»

• ### The quarter-wave matching of dispersive materials

Publication Year: 1959, Page(s):103 - 106
Cited by:  Papers (2)
| | PDF (351 KB)

Reflections from the surfaces of dispersive materials used in broadband aerial systems are highly frequency-dependent. A technique for matching such materials is described, and results are included of a successful application to the input surface of a dispersive prism. View full abstract»

• ### Theory of reflections from the rodded-type artificial dielectric

Publication Year: 1959, Page(s):107 - 114
Cited by:  Papers (1)
| | PDF (1080 KB)

It is demonstrated that a composite material of a solid dielectric with embedded conductors can give a wave impedance equivalent to that of free space, and thus eliminate interface reflections. A particular material, the rodded dielectric, is analysed, and design procedures are given which are exemplified by numerical results. An experimental verification of the design theory when the electric-fie... View full abstract»

• ### Discussion on "Theory of reflections from the rodded-type artificial dielectric", "The quarter-wave matching of dispersive materials", and "The use of dispersive artificial dielectrics in a beam-scanning prism" before the Radio and Telecommunication Section, 24th November, 1958

Publication Year: 1959, Page(s):114 - 115
| PDF (229 KB)
• ### An investigation of the excitation of radiation by surface waves

Publication Year: 1959, Page(s):116 - 122
Cited by:  Papers (4)
| | PDF (814 KB)

The graphical method of measuring a reflection coefficient through a junction, originated by Deschamps, is used to determine the transmission efficiency of a surface wave at a discontinuity. The radiations excited by the surface wave at a discontinuity in surface reactance, and at an edge of a metallic strip above a reactive surface, are investigated. It is shown that the discontinuities cause the... View full abstract»

• ### The launching of radial cylindrical surface waves by a circumferential slot

Publication Year: 1959, Page(s):123 - 128
Cited by:  Papers (2)
| | PDF (633 KB)

The efficiency with which radial cylindrical surface waves may be launched by a circumferential slot is investigated theoretically and experimentally. The radius of the slot has been found to affect the launching efficiency very little. An optimum efficiency of about 68% is obtainable with a slot of 2cm radius above a 58-ohm reactive surface. View full abstract»

• ### Parallel-plate transmission systems for microwave frequencies

Publication Year: 1959, Page(s):129 - 140
Cited by:  Papers (2)
| | PDF (1566 KB)

The paper gives a practical account of parallel-plate, or strip, transmission lines, which are becoming of increasing importance in microwave applications. The different types of strip line are considered and their basic characteristics summarized. Transducers to conventional systems and various circuit-elements are described, while the application of strip-line techniques to the construction of m... View full abstract»

• ### Optical techniques at microwave frequencies

Publication Year: 1959, Page(s):141 - 157
Cited by:  Papers (10)
| | PDF (2410 KB)

The paper reviews the application of optical principles and techniques at microwave frequencies. A brief discussion of radiation and diffraction in the far and near fields is first given. This is followed by an account of the various types of artificial dielectric. Methods for reducing and enhancing surface reflectivity are examined, and several instruments and components, which are especially use... View full abstract»

• ### A new method of generating a rotating radiation polar diagram

Publication Year: 1959, Page(s):158 - 169
| | PDF (1566 KB)

In recent years, there has been a tendency to introduce new navigational aids which utilize rotating aerial arrays of large electrical dimensions in order to obtain highly accurate navigational information; one such example is the well-known system called Tacan. In general, the rotation of large arrays introduces severe mechanical problems which fix a lower limit of about 300 Mc/s to the operating... View full abstract»

• ### Transistor active filters using twin-T rejection networks

Publication Year: 1959, Page(s):170 - 174
| | PDF (442 KB)

The introduction of a rejection-type network, such as a twin-T or a bridged-T, into the feedback loop of an amplifier leads to bandpass characteristics similar to those of single tuned circuits. It is possible to achieve highly selective circuits at very low frequencies, e.g. in the audio range, where high-Q-factor coils are usually physically large and expensive. Some basic circuits using a symme... View full abstract»

• ### The transformation of admittance through a matching section and lossless waveguide junction

Publication Year: 1959, Page(s):175 - 179
Cited by:  Papers (1)
| | PDF (567 KB)

The paper describes a method of setting up a matching section, comprising a variable reactor and phase shifter, in cascade with a lossless waveguide junction to obtain a particular admittance transformation. The terminal planes are defined by the position of voltage zeros when the junction is terminated by a short-circuit. The matching section and junction are regarded as two junctions in cascade ... View full abstract»

• ### The power radiated by a surface wave circulating around a cylindrical surface

Publication Year: 1959, Page(s):180 - 185
Cited by:  Papers (4)
| | PDF (681 KB)

Recognizing the evanescent character of the surface-wave field distribution over the equi-phase planes and the important part played by the inclination of these planes with the normal to the interface when power is transferred across it, calculations are made for radiation arising when a wave of this kind circulates around a highly reactive supporting surface of cylindrical form. It is concluded t... View full abstract»

• ### The recognition of moving vehicles by electronic means

Publication Year: 1959, Page(s):186 - 195
| | PDF (1311 KB)

The increasing congestion of traffic in London's streets has been a matter of major concern to London Transport for many years, and the maintenance of service regularity in these difficult circumstances has so far been achieved with some degree of success by additional supervision of operating personnel. The paper describes a method whereby, without any additions to the road staff, an increasing a... View full abstract»

• ### Discussion on "The recognition of moving vehicles by electronic means" before the Institution, 6th November, and the Mersey and North Wales Centre, at Chester, 24th November, 1958

Publication Year: 1959, Page(s):195 - 197
| PDF (508 KB)
• ### The authors' reply to the discussion on 'The recognition of moving vehicles by electronic means'

Publication Year: 1959
| PDF (138 KB)
• ### Pattern recognition by means of automatic analogue apparatus

Publication Year: 1959, Page(s):198 - 209
| | PDF (1784 KB)

The problem of synthesizing apparatus that will automatically simulate man's ability to recognize and to learn to recognize patterns is discussed and it is concluded that analogue circuits, rather than the digital switching circuits that have been employed in the past, provide the simpler solution. A new circuit unit that possesses many of the essential functional characteristics exhibited by nerv... View full abstract»

• ### A system for the automatic recognition of patterns

Publication Year: 1959, Page(s):210 - 221
| | PDF (1540 KB)

The paper describes a new method for the automatic recognition of patterns. The method may be applied to any form of spatial pattern, but in the present instance, patterns consisting of line figures are considered. The pattern is presented to a flying-spot scanner connected to a digital computer. The shape of the pattern is analysed and a statement is prepared describing the basic features of the ... View full abstract»

• ### Operating experience with a transistor digital computer

Publication Year: 1959, Page(s):222 - 228
| | PDF (1109 KB)

A small digital computer using transistors as the only active circuit elements has been operating for a year. The paper describes the performance of this computer and, in particular, the failure rate of point-contact transistors. Earlier information on this computer is supplemented by details of circuit developments. View full abstract»

• ### A new high-speed digital technique for computer use

Publication Year: 1959, Page(s):229 - 236
| | PDF (1154 KB)

A new method is described for realizing logical functions using square-loop ferrite cores and transistors. Complex circuits can be built up from identical elements, each consisting of one core, one transistor, three diodes and one resistor. The technique differs from earlier methods in that the current required to set a core to the `1Â¿ state is derived from a common supply and not from a previous... View full abstract»

• ### Discussion on "Operating experience with a transistor digital computer" and "A new high-speed digital technique for computer use" before the Measurement and Control Section, 4th November, 1958

Publication Year: 1959, Page(s):237 - 238
| PDF (388 KB)
• ### The authors' replies to the discussion on "Operating experience with a transistor digital computer" and Â¿A new high-speed digital technique for computer use"

Publication Year: 1959, Page(s):238 - 239
| PDF (348 KB)

## Aims & Scope

Published from 1955-1958, the Proceedings of the IEE - Part B: Radio and Electronic Engineering included all specialized papers on radio and electronic engineering (including communication engineering) that were presented to the Institution. Also included were the formal proceedings of the Radio Section of the Institution and the papers which were read before that Section, together with discussions on them.

Full Aims & Scope