Microwave Tuning Elements

LC Tuning Elements

Variations of the standard metallic units, LC tuning elements are designed specifically for filter applications. These devices provide a fixed post length which is extended by rotating the metallic rotor. A typical application is a direct-coupled TEM mode coaxial configuration. The post length is selected to cover the desired range. A circuit is designed around the tunable post so that each section approximates 76 ohms for optimum resonator Q and high selectivity.

All dimensions are in/mm.

Notes:

1. For slotted bushing, replace "S" in model number by "L".
2. To include a mating nut on the bushing, replace final "F" in the model number by "N" for a hex nut, or by "R" for a ring nut.

Engineering Bulletin SG-670 Contents

• Metallic Tuning Elements
• Dielectric Tuning Elements
• Tuning Rotors
• Dielectric Resonator Tuners
• LC Tuning Elements
• Resistive Tuning Elements