Differences

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--- en:antennas [2019/07/13 12:20] – [Patch antenna with a circular polarisation] fluktuacia
+++ en:antennas [2019/07/13 12:26] – [Preamplifier LNA01A] fluktuacia
@@ Line 47: / Line 47: @@
-The functional sample underwent a measurement
+The functional sample underwent a measurement of reflection using a Return Loss Bridge method.
-Na funkčním vzorku bylo měřeno přizpůsobení můstkovou metodou. (??)
 {{:cs:antennas:patchant_freq_char.png?200|}}
@@ Line 76: / Line 75: @@
 A good quality preamplifier is essential due to losses during signal propagation via antenna and due to low intensities of reflected signal.
-[[http://www.mlab.cz/Modules/CommRF/LNA01A/LNA01A_Bottom_Small.JPG|LNA01A]] is a preamplifier designed for meteor detection in 2m band. Its benefit is mainly in amplification of signal from antenna (thus decreasing the influence of antenna’s lead (?? svod antény) and a noise from receiver). Furthermore it reduces complications connected to signal radiation from receiver’s oscillator.
+[[http://www.mlab.cz/Modules/CommRF/LNA01A/LNA01A_Bottom_Small.JPG|LNA01A]] is a preamplifier designed for meteor detection in 2m band. Its benefit is mainly in amplification of signal from antenna (thus decreasing the influence of antenna’s lead and a noise from receiver). Furthermore it reduces complications connected to signal radiation from receiver’s oscillator.
 {{cs:antennas:gp_plast16.jpg?direct&300 | }}