Endoradiosondes: Further Notes

This paper is to supplement last year's summary on swallowable radio transmitters. Included are general comments on procedure as well as specific items such as temperature sensitivity, the use of tunnel diodes in pH measurement, the use of multiple transmitters, and the design of a nondirection...

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Bibliographic Details
Published inIRE transactions on bio-medical electronics Vol. ME-7; no. 2; pp. 67 - 73
Main Author Mackay, R. Stuart
Format Journal Article
LanguageEnglish
Published United States IEEE 01.04.1960
Subjects
Calibration
Coils
Degradation
Electronics
Humans
Instruments
Pistons
Probes
Radio
Radio transmitters
Radiofrequency integrated circuits
Relays
RADIO
ELECTRONICS
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ISSN0097-1049
0096-1884
DOI10.1109/IRET-ME.1960.5008013

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Summary:This paper is to supplement last year's summary on swallowable radio transmitters. Included are general comments on procedure as well as specific items such as temperature sensitivity, the use of tunnel diodes in pH measurement, the use of multiple transmitters, and the design of a nondirectional receiving antenna system. The latter not only simplifies unattended recording in some cases but also helps in relaying the signal from a small booster transmitter carried by the subject. The frequency shift needed in relaying action is here a frequency doubling provided by suitable nonlinear receiver circuits.
ISSN:0097-1049
0096-1884
DOI:10.1109/IRET-ME.1960.5008013