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• ### The next stage in television

Publication Year: 1973, Page(s):597 - 598
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• ### Data compression techniques as a means of reducing the storage requirements for satellite data: a quantitative comparison

Publication Year: 1973, Page(s):599 - 608
Cited by:  Papers (1)
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This paper reports on an investigation into the application of data compression techniques as a means of reducing the on-groundÂ¿ data storage requirements that are associated with many space research programmes. The paper presents and compares quantitatively various compression techniques based on the Shannon-Fano, run-lengthÂ¿ and Hadamard transformation methods of source encoding. The compres... View full abstract»

• ### Non-linear resistors

Publication Year: 1973, Page(s):609 - 612
Cited by:  Papers (1)
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Non-linear resistors have been known since the early 19th century but have been of commercial significance only over the last 50 years. Today over 700 million pieces are manufactured annually. This paper outlines the three major types commonly found in the electronics industry, namely, negative and positive temperature coefficient thermistors, and voltage-dependent resistors. The electrical proper... View full abstract»

• ### The choice of data transmission system for efficient use of transmitter power

Publication Year: 1973, Page(s):613 - 621
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The relationship between system error probability and transmitter power is investigated for block and convolutional codes operating in conjunction with binary phase-reversal keying. The following assumptions are made: (i) all systems accept the same data rate, (ii) a very large bandwidth expansion is not acceptable, (iii) the channel is disturbed by white Gaussian noise, (iv) a matched filter rece... View full abstract»

• ### Noise and dynamic range in lossy delay lines with compensation amplification

Publication Year: 1973, Page(s):622 - 624
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It is shown that if the loss in a delay line is compensated by amplifying, the dynamic range of the system is maximized by amplifying continuously along the delay line so that the signal strength remains constant. This principle is particularly applicable to microsound delay lines and delay equalizers. Moreover, if the noise figure of the amplifier is sufficiently small,the dynamic range may be gr... View full abstract»

• ### Linear microwave amplification using impatt diodes

Publication Year: 1973, Page(s):625 - 630
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Impatt diode amplifiers are candidates for use in super high frequency (s.h.f.) systems as broadband,intermediate power amplifiers, but their poor linearity makes them unattractive for some systems.The linearity of some XÂ¿band impatt diode amplifiers is considered in this paper. The amplifiers are of the circulator coupled, reflexion type, where p +nn + silicon diodes of various doping levels are... View full abstract»

• ### Synthesis of wideband cascaded double-pole crystal lattice filters

Publication Year: 1973, Page(s):631 - 637
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A design procedure is given for crystal lattice filters with bandwidths for quartz of approximately 1 to 8% of the centre frequency; the method results in simple formulae in terms of the elements of a low-pass ladder whose order is a multiple of four. View full abstract»