Radio and Electronic Engineer
Volume 42, Issue 8, August 1972
Volumes & issues:
-
Volume 54 (1984)
-
Volume 53 (1983)
-
Volume 52 (1982)
-
Volume 51 (1981)
-
Volume 50 (1980)
-
Volume 49 (1979)
-
Volume 48 (1978)
-
Volume 47 (1977)
-
Volume 46 (1976)
-
Volume 45 (1975)
-
Volume 44 (1974)
-
Volume 43 (1973)
-
Volume 42 (1972)
-
Volume 41 (1971)
-
Volume 40 (1970)
-
Volume 39 (1970)
-
Volume 38 (1969)
-
Volume 37 (1969)
-
Volume 36 (1968)
-
Volume 35 (1968)
-
Volume 34 (1967)
-
Volume 33 (1967)
-
Volume 32 (1966)
-
Volume 31 (1966)
-
Volume 30 (1965)
-
Volume 29 (1965)
-
Volume 28 (1964)
-
Volume 27 (1964)
-
Volume 26 (1963)
-
Volume 25 (1963)
Volume 42, Issue 8
August 1972
Framework for government research and development
- Source: Radio and Electronic Engineer, Volume 42, Issue 8, page: 349 –349
- DOI: 10.1049/ree.1972.0059
- Type: Article
- + Show details - Hide details
-
p.
349
(1)
Actively mode-locked transversely excited atmospheric (T.E.A.) CO2 laser
- Author(s): J.L. Lachambre ; F. Rheault ; J. Gilbert
- Source: Radio and Electronic Engineer, Volume 42, Issue 8, p. 351 –356
- DOI: 10.1049/ree.1972.0060
- Type: Article
- + Show details - Hide details
-
p.
351
–356
(6)
A mode-locked CO2 laser with transverse pulse pumping has been developed which employs a Ge ultrasonic diffraction cell as an active loss modulator. This paper describes the initial stage of an effort to exploit the broad bandwidth (̃ 5 Ghz) of the CO2 laser transition and the high concentration of active gas at atmospheric pressure for generating ultra-short infra-red pulses at 10.6 μm wavelength. With the laser system presently described, output pulses with typical durations of about 1 ns and peak powers in the multi-megawatt range have been obtained for the first time.
The organization of some solid-state stores
- Author(s): K.J. Dean
- Source: Radio and Electronic Engineer, Volume 42, Issue 8, p. 357 –363
- DOI: 10.1049/ree.1972.0061
- Type: Article
- + Show details - Hide details
-
p.
357
–363
(7)
A basic solid-state storage array is proposed which is capable of fast read- and write-times. special cases of this array are developed, one of which is analogous to a disk store and the other to a toroid on which the data paths can be either circular or helical. this represents a new concept: that of a cellular array without boundary cells. the characteristics of these stores and those of other conventional forms of storage are compared.
Factors affecting the power stability of HCN lasers
- Author(s): D.W.E. Fuller and B.O. Baker
- Source: Radio and Electronic Engineer, Volume 42, Issue 8, p. 364 –368
- DOI: 10.1049/ree.1972.0062
- Type: Article
- + Show details - Hide details
-
p.
364
–368
(5)
Laser stability must be defined in terms of the appropriate observation period, usually a second, an hour or a day, and the expected changes in the environment during that period. The relative importance of sources of instability of power output has been investigated and related to various designs of the HCN laser. The design of the NPL-GEC laser has been based on this investigation.
Pyroelectric detector arrays for thermal imaging
- Author(s): H. Blackburn ; H.C. Wright ; R. Eddington ; R.S. King
- Source: Radio and Electronic Engineer, Volume 42, Issue 8, p. 369 –372
- DOI: 10.1049/ree.1972.0063
- Type: Article
- + Show details - Hide details
-
p.
369
–372
(4)
The pyroelectric detector is well established as a very effective single-element infra-red detector operating at room temperature. This paper describes the development of linear arrays of detectors in which the detector elements and much of the circuitry required for their operation are in the same microelectronic package. To eliminate the effects of voltage offset variations in the pre-amplifiers a signal processing system has been developed which uses digital techniques.
The design of an audio-frequency active RC band-pass filter for a specific engineering requirement
- Author(s): D.G. Haigh and R. Jeffers
- Source: Radio and Electronic Engineer, Volume 42, Issue 8, p. 373 –380
- DOI: 10.1049/ree.1972.0064
- Type: Article
- + Show details - Hide details
-
p.
373
–380
(8)
An engineering requirement for an audio-frequency band-pass filter can be met with an active RC filter which uses positive impedance convertors to simulate the inductors of an LC filter. Because of the low sensitivity of this type of realization, the component tolerances required are compatible with thick film technology.
Measurement of varactor capacitance parameters
- Author(s): R.B. Smith and B. Bramer
- Source: Radio and Electronic Engineer, Volume 42, Issue 8, p. 381 –388
- DOI: 10.1049/ree.1972.0065
- Type: Article
- + Show details - Hide details
-
p.
381
–388
(8)
A new technique is proposed for the determination of the parameters of the capacitance-voltage relationships of the p-n junction varactor. Special charts are used in conjunction with the measured values of varactor capacitance at five bias voltages. The determination of the Fourier capacitance coefficients of the pumped varactor is then discussed, another chart being used, in conjunction with the parameters of the capacitance voltage relationship, to determine values for these coefficients. The chart is applicable to voltage and current pumping. Experimentally-determined capacitance coefficients are compared with those obtained using the chart.
Most viewed content for this Journal
Article
content/journals/ree
Journal
5
Most cited content for this Journal
We currently have no most cited data available for this content.
