A radio receiver is a non-linear device which converts high frequency electrical oscillations applied to its input terminals into an output electrical potential with certain convenient properties. The primary desideratum is sufficient power to drive some indicating instrument such as a recording ammeter, an oscillograph, a loudspeaker, a magnetic tape recorder, or typewriter. The output potential must also have a spectral distribution of power suitable to the needs of the indicating instrument. Furthermore one relies on the receiver to select the narrow band of high frequencies to which attention is to be directed. Among the necessary functions of a receiver, therefore, are (i) amplification, (ii) frequency conversion, (iii) tuning, (iv) selectivity.
KeywordsMicrowave Mercury Attenuation Ferrite Argon
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- 1.G. E. Valley and H. Wallman : Vacuum tube amplifiers. New York-Toronto-London : McGraw-Hill 1948.Google Scholar
- 1.V.A. Hughes: Proc. Inst. Electr. Engrs. B 103, 669 (1956).Google Scholar
- 2.H. Johnson and K.R. DeRemer: Proc. Inst. Radio Engrs. 39, 908 (1951).Google Scholar
- 1.Proc. Inst. Radio Engrs. 44 (1956). This volume is devoted to the subject of ferrites.Google Scholar
- 2.C.H. Mayer: J. Geophys. Res. 59, 155 (1954).Google Scholar
- 4.K.E. Machin, M. Ryle and D.D. Vonberg: Proc. Inst. Electr. Engrs. III 99, 127 (1952).Google Scholar