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QSA Series Variable PIN Attenuators
(PDF available)

 

Characteristics
  • Broad RF Bandwidth
  • Low Insertion Loss
  • Current Controlled
Product Description

QuinStar Technology's QSA series millimeter-wave variable PIN attenuators cover the frequency range of 18 to 110 GHz in seven waveguide bands. They are constructed with a rugged, split block mechanical design that utilizes PIN diodes, and are capable of handling RF power levels up to 1 Watt.

Standard units feature broad bandwidth. However, they can be optimized over a narrower frequency range for greater attenuation range or lower insertion loss. They are ideal for signal level control and amplitude modulation.

Specifications
FREQUENCY BAND K Ka Q U V E W
Frequency Range (GHz) 18-26.5 26.5-40 33-50 40-60 50-75 60-90 75-110
Waveguide Size WR-42 WR-28 WR-22 WR-19 WR-15 WR-12 WR-10
Insertion Loss (dB max) 1.0 1.0 1.0 1.2 1.5 2.0 2.0
Bandwidth (GHz min) Full Full Full Full 10 10 10
Attenuation Range (dB min) 0-23 0-23 0-23 0-23 0-20 0-20 0-20

For ON-state (low insertion loss), the attenuator requires a reverse voltage of 10 Volts; for increasing attenuation, a forward bias current ramping up to 25 mA must be applied.

Power Rating: 1 Watt (max).


Outline Drawings/Mechanical Specifications

WR-42 and WR-28

WR-22 through WR-10

FREQUENCY
BAND
WAVEGUIDE
SIZE
FLANGE
PATTERN
BIAS
INPUT
OUTLINE DIMENSIONS, inches/mm
A B C
K WR-42 UG595/U SMA Jack 0.88/22.4 0.88/22.4 1.50/38.1
Ka WR-28 UG599/U SMA Jack 0.75/19.1 0.75/19.1 1.50/38.1
Q WR-22 UG383/U SMA Jack 1.13/28.7 1.13/28.7 1.00/25.4
U WR-19 UG383/U SMA Jack 1.13/28.7 1.13/28.7 1.00/25.4
V WR-15 UG385/U SMA Jack 0.75/19.1 0.75/19.1 1.00/25.4
E WR-12 UG387/U SMA Jack 0.75/19.1 0.75/19.1 1.00/25.4
W WR-10 UG387/U SMA Jack 0.75/19.1 0.75/19.1 1.00/25.4

Ordering Information

Model Number: QSA - AB CD E F

AB = Center frequency rounded to nearest GHz
(1A = 100-109 GHz, FB = fullband)
CD = Maximum attenuation required, in dB
E = Options:
0 = None
Z = Custom
F = Waveguide band designator
K = K-band
A = Ka-band
Q = Q-band
U = U-band
V = V-band
E = E-band
W = W-band

 

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