Typical Performance
Package Outline
PSM-2 Series PHASE SHIFTERS, MANUAL
10 to 500 MHz / 0 to 90 / 10% Bandwidth / Multi-Turn Adjustment, High Resolution Manual Units
For further information contact MERRIMAC / 41 Fairfield Pl., West Caldwell, NJ, 07006 / 973-575-1300 / FAX 973-575-0531
PRINCIPAL SPECIFICATIONS
Center
Model Frequency, Usable
Number fo, MHz Bandwidth
PSM-2-***B 10 to 500 fo ± 5%
For complete Model Number replace *** with desired Center Frequency, fo in MHz.
GENERAL SPECIFICATIONS
Phase Shift Range 90° min. @ fo
Insertion Loss: 1.5 dB max.
Impedance: 50 Ω nom.
VSWR: 1.6:1 max.
Screw Drive: Multi-Turn
Turns for maximum phase shift:
10 MHz to 125 MHz: 32 turns nom.
125 MHz to 500 MHz: 18 turns nom.
CW Power: 0.5 Watts max.
Weight, nominal: 2 oz (58 g)
Operating Temp: -- 55° to +85°C
General Notes:
1. The PSM-2 series adjusts phase continuously with a
multi-turn screw from 0° to 90°.
2. These phase shifters employ lumped element
quadrature hybrids with capacitor tuned LC networks,
acting as sliding short circuits on the outputs. The
electrical length of the short effectively delays the reflected
signal which appears at the isolated port of the quadrature
hybrid.
NOTES:
1. Tolerance on 3 place decimals ±.020(.51) except as noted.
2. Insertion phase increases with clockwise rotation of screw.
3. Dimensions in inches over millimeters.
15Feb96
