Microwave Tuning Elements

Resistive Tuning Elements

The use of a lossy rod material for the rotor of the tuning element provides a convenient and effective means of trimming the microwave device in a waveguide or cavity. The amount of power absorbed is a function of the depth of insertion of the rod into the waveguide or cavity. Standard models are ideal for frequencies of 1 to 18 GHz.

All dimensions are in/mm.

Notes:

1. Hardware modifications:
   1. For slotted bushing, replace "S" in model number by "L".
   2. For ring nut (instead of hex nut), replace "N" in model number by "R".
   3. For no nut, replace "N" by "F".
2. Rotor adjusting slot is 0.060/1.5 x 0.016/0.41 for bushings where "H" is 0.120-80, 0.13/3.3 x 0.020/0.51 for bushings where "H" is 0.190-64, and 0.16/4.0 x 0.020/0.51 where "H" is 0.234-64.

Engineering Bulletin SG-670 Contents

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