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QJE / QJF Fullband Junction Circulators and Isolators
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Characteristics
  • Full Waveguide Band
  • Compact
  • High Isolation
  • Low Insertion Loss
Product Description

QuinStar Technology’s QJE series fullband junction circulators and QJF series fullband junction isolators are available in two waveguide bands covering the frequency range of 18 to 40 GHz. These H-plane three-port Y-junction ferrite devices feature high isolation, low insertion loss and full waveguide bandwidth.

Junction circulators and isolators are used to provide load isolation in a wide variety of components including Gunn oscillators and amplifiers, upconverters and downconverters, power combiners, and also as duplexers at the antenna ports of millimeter-wave transceiver systems. They are also ideally suited for broadband or swept frequency applications.

Specifications
FREQUENCY BAND K Ka
Frequency (GHz) 18-26.5 26.5-40
Waveguide Size WR-42 WR-28
Bandwidth (GHz min) Full Full
Isolation (dB min) 20 18
Insertion Loss (dB max) 0.4 0.6
VSWR 1.25:1 1.3:1
Power Rating (W max) 5 4

Outline Drawings/Mechanical Specifications
FREQUENCY
BAND
WAVEGUIDE
SIZE
FLANGE
PATTERN
OUTLINE DIMENSIONS, inches/mm
A B C
K WR-42 UG-595/U 1.15/29.2 0.88/22.4 1.00/25.4
Ka WR-28 UG599/U 0.90/22.9 0.90/22.9 0.90/22.9

Ordering Information

Model Number: QJ_ - A 00000

QJ_ = Model prefix:
QJE = circulator
QJF = Isolator
A = Waveguide Band Designator
K = K-band
A = Ka-band

 

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