0000013131 00000 n Hong Kong, China Andorra Such filters can be thought of as high pass filter cascaded through a low pass filter. When the source is finally determined, it is desirable to establish the level of the products to determine compliance with the commission’s rules, or lack thereof. Procurement %PDF-1.3 %���� In other words, a measured second harmonic, which is twice the frequency of the fundamental, will be 6 dB higher than the actual sample or level being “transmitted.” The third harmonic will be 9 dB lower than measured, the fourth 12 dB lower, and so on. trailer << /Size 82 /Info 17 0 R /Root 30 0 R /Prev 375483 /ID[] >> startxref 0 %%EOF 30 0 obj << /Type /Catalog /Pages 18 0 R /JT 28 0 R /PageLabels 16 0 R >> endobj 80 0 obj << /S 159 /L 319 /Filter /FlateDecode /Length 81 0 R >> stream Côte d'Ivoire The aliasing distortion will, when the signal is reproduced on a set of loudspeakers having some IM distortion, generate AID. St. Vincent and Grenadines The late great Don Markley used to talk about a case where a spur created from the mix of two proximal FM stations was wreaking havoc on aircraft communications. Morocco In a case where two FM stations are potentially mixing, a band reject in the form of a notch in the path of each may be sufficient. 0000005390 00000 n Congo Electronics Manufacturing Liechtenstein Aerospace and Defense Tonga Romania
Zimbabwe 0000006544 00000 n Products transmitted also travel through the filter and are therefore reduced in magnitude. Bosnia and Herzegovina The stimulus signal is the sum of the two sine waves. Chile Korea (South)
Identification and elimination of intermodulation products is usually straightforward, although every once in a while, a curve ball is thrown that challenges the acumen of the most astute engineer. 0000326089 00000 n The number of potential third, fifth, and seventh order products are 12, 30 and 56, respectively. 0000326228 00000 n Learn how to eliminate uncertainties and doubts that come from different types of distortion and why it matters to your RF distortion measurements. Eritrea Cambodia 0000013109 00000 n Japan Required field, Last Name* Similarly, an example of a fifth order product is three times one frequency minus twice the other. Estonia Laos
Education Although the probability of a seventh or higher order product occurring is non-zero, it is very small. Myanmar Depending on the methodology utilized, additional correction factors may be required for the sample apparatus, as well.
Macedonia In the event that products are found to exist, no equipment issues are present, and the cause of products is outside frequencies coupling through the antenna system, the typical way of elimination or reduction is through filtering. Guadeloupe Christmas Island 0000019510 00000 n Suriname In that case, and others, filtering may require the addition of shielding to keep the neighbors happy. Bahrain Lab Services
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