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Re: S11 Vs S21 @ Filters
It basically depends on the application. S21 provides the description of the filter, while S11 (matching) in the stop is upon the application specifications.
Reciprocity theorem basically claims that two interacting fields have the effect on each other. Thus changing one field (e.g., the position of the transmitting antenna) will have the same effect on the system as changing the other interacting field (the receiving antenna) the same way.
Best...
Check the following paper
This paper appears in: Antennas and Propagation, IEEE Transactions on
Issue Date : Aug 1997
Volume : 45 , Issue:8
On page(s): 1294 - 1301
ISSN : 0018-926X
References Cited: 21
INSPEC Accession Number: 5674616
Digital Object Identifier : 10.1109/8.611250
Date of...
If you mean to extract the Q from simulation, then just resonate the balun at the designated frequency, and from the transfer function Q=freq/BW (3dB).
1. If you are using a double slot antenna with more than one port, make sure that the excitation phases are correct.
2. Silicon is a VERY lossy substrate, try comparing the same antenna using metal over air (radiating slot) and compare to text book exact solution (e.g., Balanis).
When you have a...
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