results of tunable microstrip antenna

[kartikkhurana]

Hi all

i want to know how to find the following parameters for tunable patch antenna ( for example take attached papers)
(1) tuning range
2)size reduction factor as given in abstract of attched papers
3) % bandwith for the resonant frequency
regards
kartik

 

[polarizadmax]

tuning range is the amount of resonant frequency shift could achieve by changing reactance.

% bw is{ [higher cutt off frequence (Fh) - Lower cutt off frequency (Fl)]/reasonant frequency of patch (Fc)} X100
(the Fh and Fl values are to be taken on return loss plot at -10dB .while Fc is frequency with min. return loss)

 

[maurymw]

Designs for forecasting and are provided, the advantages of using metamaterial substrates are mentioned, and the outcomes in this antenna try things out are provided.