Noise figure meter pdf file

Load a noise figure frequency list table from a file. The noise figure calibration process is different depending on if a noise source or a pna source calibrated with a power meter is used to calibrate the noise receiver. Model 342a noise figure meter with an appropriate noise source automatically measures and continuously displays the noise figure of the receiver or amplifier to which it is attached. Its control interface and display are designed specifically for noisefigure measurements. The noise source is off when no voltage is applied.

In the direct method, a spectrum analyzer is used to measure the absolute power of the noise and the. Noise figure of a receiver or amplifier is a measure of deterioration of the signalto noise ratio, caused by the amplifying device. Noise figure measurement methods and formulas maxim integr. Using a power meter when use power meter is selected on the select cal method dialog, a power meter is used in place of a noise source to characterize the noise receiver. Manual measurements which can be made on a single frequency point or. The circuit of the broadband amplifier is shown in figure 2.

Application note of noise figure measurement methods. Agilent fundamentals of rf and microwave noise figure. Three methods of noise figure measurement tutorial maxim. The if attenuator data is needed to return the noise. It also discusses a transistor noise figure test, and ssb and. Agilent pn 85719a1 maximizing accuracy in noise figure. The transistors are measured in a precision text fixture. This section explains the noise figure nf by quantifying the noise in an amplifier. No part of this manual may be reproduced in any form or by any means including electronic storage and retrieval or translation into a foreign language without. In a linear amplifier, the ratio of the signal to the noise snr is expressed by an index called the noise figure nf. All measurements should be at least 10 db greater than the noise floor. Photo a the front panel of the ve5fp automatic noisefigure meter.

The output of the dut is then measured by the noise figure analyzer. Keysight technologies noise figure xseries measurement app. Using a noise figure meter is the most straightforward way to measure noise figure. In contrast to a noisefigure meter, spectrum analyzer, or network analyzer, an nfa is a dedicated instrument.

Three methods of noise figure measurement maxim integrated. This chapter introduces you to basic features of the noise figure analyzer, including. This manual provides documentation for the following instruments. The primary tool for noise measurement is the sound level meter slm. With an optional preamp installed in an xseries signal analyzer or. Figure meter to specified operation should a nonvolatile memory. Noise figure measurement personality guide keysight. Lamancusa penn state 1242000 an octave band filter is not a perfect bandpass filter it is. Calibration for noise figure on amplifiers and converters.

Noise figure measurement without a noise source on a. The advantage of this method is the simple system configuration, but the disadvantage is the need for a highperformance measuring instrument. An engineer can measure the noise figure over a certain frequency range, and the analyzer can display the system gain together with the noise figure to help the measurement. Loads the frequency data in the file to the frequency table. Noise figure analyzers nfa series users guide keysight. Noisefigure analyzers nfas are onebox solutions for yfactorbased noisefigure measurements. Preamps are available to reduce the uncertainty of yfactor noise figure measure ments. The typical dynamic range of meters is 60 db, more is better.