RF cavity resonator with low passive inter-modulation tuning...

Details RF cavity resonator with low passive inter-modulation tuning... RF cavity resonator with low passive inter-modulation tuning...

2006-07-18

2006-07-18

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Resonators

Dielectric type

C333S224000, C333S202000, C333S235000

Reexamination Certificate

active

07078990

ABSTRACT:
A tunable RF cavity resonator having reduced generation of passive inter-modulation, the tunable RF cavity resonator including a cavity body, a fixed tuning post at a first end of the cavity body, a dielectric rod in the fixed tuning post interior space with a first spatial gap between the dielectric rod outer surface and the fixed tuning post inner wall, a tuning screw connected to a first end of the dielectric rod, and a tuning element disposed on a second end of the dielectric rod so that the tuning element moves within the interior space of the fixed tuning post while maintaining a second spatial gap between the tuning element outer surface and the fixed tuning post inner wall. Accordingly, the tuning element forms a short section of very low RF impedance transmission line thereby preventing RF signal leakage through the interior space of the fixed tuning post.

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