I'm looking to design a sysetm that will let me feed four patch antennas out of phase. First one, 0 degress, then 90 degrees, 180 and 270 degrees. Question is where can i find a design for a rat-race type hybrid, OR is there a way i can use a number of hybrids to accompolish this? Power is 20...
Does anyone know of a material such as cotton or nylon type, that i can place an antenna inside of without degrading the antennas performance? Ideally, i'd like
to create a waterproof bag to place an antenna inside?
Thanks in advance,
I have an older HP-8711B Network Analyzer and am trying to plot the output data into a smith chart for matching.
The problem is this analyzer does not provide polar coordinates.
How can i use the data from my analyzer (either LogMag/LinMag/SWR) to plot on a smith chart??
Thank you.
Frank
I have cascaded two LNA's and when i apply voltage to both amplifers the floor on my spectrum analyzer increases 20dB to about (-50dB). When i apply voltage to just one amplifer, the specturm analyzer's noise floor(?) stays at (-75dB). Is that normal? or a product of the cascaded amplifer...
