Low Level RF Leakage Measurements
Publication Number: 5952-2789
Publication Date: 2014.07.31
Language: English
Application Notes

Low Level RF Leakage Measurements

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There are many advancements in two-way radios and pagers including greater sensitivities, and higher frequencies. A radio or pager which can receive very low level signals far from the transmitter is considered more valuable and can command a higher price. Regulatory agencies are opening channels to higher frequencies. In order to design and produce these new products, component, device and product manufacturers are requiring signal sources which can accurately simulate the low-level signals in the right frequency range which their new products are being designed to work with.

 

The impact of greater receiver sensitivity is subtle. The obvious need is for sufficient output level attenuation to obtain the new lower test signal levels. The less obvious need is for reduced RF leakage from the signal generator. The test signal should leave the signal generator by the RF output connector only. But the signal may also leave the signal generator by a radiated leakage path. If the radio under test is not well shielded, or if the radio's shielding covers are off for purposes of test, the leakage signal can enter the radio along with desired signal from the RF output connector.