Spectrum Engineering
NOTE: These reports are available either on-line in PDF (portable document) format or only as hard-copy. If you would like a copy of a report that is not available electronically, please make note of the document number and submit your request to:
NTIA Office of Spectrum Management
System Engineering and Analysis Division
Tel. (202) 482-2608
Fax (202) 482-4595
e-mail edrocella@ntia.doc.gov
Related content
Radio Spectrum Measurements of Individual Microwave Ovens - Volume 1
The Radio Spectrum Measurements of Individual Microwave Ovens report was released in March 1994, consisting of Volumes 1 and 2. This report provides results of radio spectrum measurements of 13 individual microwave ovens performed at the NTIA, Institute for Telecommunication Sciences (ITS). Measurements include emission characteristics and time waveforms covering the frequency range 2300-2600 MHZ and oven emission characteristics of harmonic frequency ranges up to the 7th harmonic. Test parameters were varied to identify their impact on test results. These parameter variations include such factors as cooking load, start temperature, oven orientation, and receiver bandwidth. Test procedures of the Federal Communications Commission (FCC), the International Special Committee on Radio Interference (CISPR), and additional procedures developed by NTIA and ITS are also discussed.
Radio Spectrum Measurements of Individual Microwave Ovens - Volume 2
The Radio Spectrum Measurements of Individual Microwave Ovens report was released in March 1994, consisting of Volumes 1 and 2. This report provides results of radio spectrum measurements of 13 individual microwave ovens performed at the NTIA, Institute for Telecommunication Sciences (ITS). Measurements include emission characteristics and time waveforms covering the frequency range 2300-2600 MHZ and oven emission characteristics of harmonic frequency ranges up to the 7th harmonic. Test parameters were varied to identify their impact on test results. These parameter variations include such factors as cooking load, start temperature, oven orientation, and receiver bandwidth. Test procedures of the Federal Communications Commission (FCC), the International Special Committee on Radio Interference (CISPR), and additional procedures developed by NTIA and ITS are also discussed.
A Survey of Relative Spectrum Efficiency of Mobile Voice Communication Systems
This paper provides definitions of spectrum efficiency for general communication systems, then simplifies the definitions so that the spectrum efficiency of several contemporary mobile radio systems can be easily compared.