PLB & PLM Series
LINEAR PHASE MODULATORS
10 to 500 MHz / 0 to 180 Coverage / 10% Bandwidth / Voltage Controlled / SMA or BNC
PRINCIPAL SPECIFICATIONS
SMA
Model
Number
BNC
Model
Number
Center
Freq, f
o,
Range, MHz
10 to 500
Phase
Shift
@ f
o
180°
Linearity
@ f
o
5%
Percent
AM
5%
Insertion
Loss,
dB, Max.
2
F
Ø
VSWR Weight
Max. oz (g)
1.5:1 3.4 (95)
PLM-3B-***B PLB-3B-***B
For complete Model Number replace *** with desired center frequency, f
o
in MHz.
Package Outline
GENERAL SPECIFICATIONS
Bandwidth:
Modulation Rate:
Impedance:
Input Power:
Control Voltage
for full range:
Response Time:
(50
Ω
source):
Phase Stability, typical:
Operating Temperature:
10% of f
o
1% of f
o
nom.
50
Ω
nom.
-- 10 dBm max.
0 to +15 V max.
50
µs
max.
0.2° per °C
-- 55° to +85°C
Typical Characteristics
NOTES:
1. Tolerance on 3 place decimals
±
.020(.51) except as noted.
2. Dimensions in inches over mm.
General Notes:
1. The PLB & PLM series use a control voltage of 0 to +15V to vary relative phase
across a 180° range.
2. Each phase shifter element employs quadrature hybrids with matched pairs of
varactor tuned LC networks acting as sliding short circuits on the outputs. The
electrical length of this short circuit controls the delay in the reflected signal
appearing at the isolated port of each quadrature hybrid.
3. These units are suitable for high reliability and space applications.
15Feb96
F rf t e if r to c n a t
M ERRI AC /41 Faifel Pl,W estCal el,NJ,07006 / 973-
o ur h r n o ma in o t c
M
ri d .
dw l
575-
1300 /FAX 973- 0531
575-