HF high power electronically tunable helical resonator filter
Rui‐Feng Xue, Bin Yuan, Junfa Mao, C.-H. Liang · International Journal of Electronics · 2006
A novel design of a high power electronically tunable helical resonator filter suitable for applications in HF radio communication is proposed. The helical resonator is loaded in the middle of the helix and the tuning element is set outside the cavity. Theoretical analysis and experimental verification are demonstrated.