Persistent Link:
http://hdl.handle.net/10150/606330
Title:
RF Intermodulation Characteristics of VHF Telemetry Preamplifiers and Receivers
Author:
Jeske, Harold O.
Affiliation:
Sandia Corporation
Issue Date:
1966-10
Rights:
Copyright © International Foundation for Telemetering
Collection Information:
Proceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
Publisher:
International Foundation for Telemetering
Journal:
International Telemetering Conference Proceedings
Abstract:
Tests have been conducted on ten preamps and six receivers to quantitatively determine their linear operating range. The range of linear operation was determined by the measurement of, or the effects of, intermodulation (IM) products that were produced by the simultaneous application of two input signals. Measurements were made at a frequency equal to twice the frequency of one signal source minus the frequency of the other signal source. Tests of the ten preamps, which included eight solid state units, indicated that their dynamic range varies from approximately 46 to 70 db. Since the IM products of interest vary as the cube of the input signal, the output IM products may vary over a 72 db range, between the preamps tested, for a given input condition. It was found, under the best conditions with some receivers, that their proper operation was prevented by the presence of two signals that were less than 30 db larger than the desired signal. The two interfering signals were located well outside the rated - 60 db bandwidth of the receiver. The results of the tests should provide receiving system designers and operators with a better insight into the problem of RF intermodulation interference. Since no known military interference specifications consider intermodulation as investigated, it is believed that some standard test procedures should be developed by the telemetering community for preamp and receiver testing.
Sponsors:
International Foundation for Telemetering
ISSN:
0884-5123; 0074-9079
Additional Links:
http://www.telemetry.org/

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titleRF Intermodulation Characteristics of VHF Telemetry Preamplifiers and Receiversen_US
dc.contributor.authorJeske, Harold O.en
dc.contributor.departmentSandia Corporationen
dc.date.issued1966-10en
dc.rightsCopyright © International Foundation for Telemeteringen
dc.description.collectioninformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.en
dc.publisherInternational Foundation for Telemeteringen
dc.description.abstractTests have been conducted on ten preamps and six receivers to quantitatively determine their linear operating range. The range of linear operation was determined by the measurement of, or the effects of, intermodulation (IM) products that were produced by the simultaneous application of two input signals. Measurements were made at a frequency equal to twice the frequency of one signal source minus the frequency of the other signal source. Tests of the ten preamps, which included eight solid state units, indicated that their dynamic range varies from approximately 46 to 70 db. Since the IM products of interest vary as the cube of the input signal, the output IM products may vary over a 72 db range, between the preamps tested, for a given input condition. It was found, under the best conditions with some receivers, that their proper operation was prevented by the presence of two signals that were less than 30 db larger than the desired signal. The two interfering signals were located well outside the rated - 60 db bandwidth of the receiver. The results of the tests should provide receiving system designers and operators with a better insight into the problem of RF intermodulation interference. Since no known military interference specifications consider intermodulation as investigated, it is believed that some standard test procedures should be developed by the telemetering community for preamp and receiver testing.en
dc.description.sponsorshipInternational Foundation for Telemeteringen
dc.identifier.issn0884-5123en
dc.identifier.issn0074-9079en
dc.identifier.urihttp://hdl.handle.net/10150/606330en
dc.identifier.journalInternational Telemetering Conference Proceedingsen
dc.typetexten
dc.typeProceedingsen
dc.relation.urlhttp://www.telemetry.org/en
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