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(ask) increase bandwidth of monopole antenna

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suryanadev

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dear all
can anyone explain to me how to increase bandwidth of monopole antenna (wire antenna)?
may be u can share a document about it
thanks you
best regards
 

Typically any monopole and dipole bandwidth is increased by making it thicker. Extreme bandwidths are achieved by triangular elements; dipoles are then named "butterfly". Many designs have been described from the 1920s till now.
 
thanks you jiripolivka

could you shared a document about monopole antenna? especially about formula to calculate bandwidth and effect of diameter monopole on bandwidth..
 

I like discones. another trick is to load the top end with a capacitive disk
 

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