Terminator3
Advanced Member level 3

Hello! I am learning about monopoles using microstrip patches without ground plane. I want to ask what is best option to cancel radiation on the second side of PCB, when we do not need omnidirectional 360deg pattern, but only < 180deg.
I see such options:
1. put an microwave absorber (but we lost 50% of power)
2. using machined cavity with some height to reflect radiation back to monopole or something like that.
Any suggestions?
I see such options:
1. put an microwave absorber (but we lost 50% of power)
2. using machined cavity with some height to reflect radiation back to monopole or something like that.
Any suggestions?