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QMH Series Harmonic Mixers and Diplexers

Characteristics
  • Optimized for Any Harmonic Number

  • External Diplexer Option

  • High Sensitivity

  • Broad Bandwidth

Product Description

QuinStar Technology's QMH series harmonic mixers enable downconversion of millimeter-wave signals using lower frequency (microwave) local oscillator signals. They cover the frequency range of 18 to 170 GHz in nine full waveguide bands. These harmonic mixers are useful for subsystem applications involving frequency sampling such as phase-locked oscillators and frequency linearizers. They are also ideally suited for test and measurement equipment, such as spectrum analyzers, frequency counters and power meters.

Harmonic mixers can be optimized for either odd or even harmonics of the local oscillator (LO). They can also be produced to operate on all harmonics, even or odd. Series QMH harmonic mixers have a common SMA port for LO and IF signals, and hence require an external diplexer. Those mixers can be supplied with external diplexers to combine/separate LO and IF signals. Several choices of LO & IF ranges are offered as standard products. Typical LO ranges from 1.5 GHz to 20 GHz and IF from DC to 2.5 GHz.

Specifications
FREQUENCY BAND K Ka Q U V E W F D
Frequency Range (GHz) 18-26.5 26.5-40 33-50 40-60 50-75 60-90 75-110 90-140 110-170
Waveguide Size WR-42 WR-28 WR-22 WR-19 WR-15 WR-12 WR-10 WR-8 WR-6
Conversion Loss (dB typ)1 20 22 24 26 28 30 32 35 37

Other waveguide sizes are available.
1 For 9th harmonic of LO, IF < 1 GHz. Typical LO power range is 7 to 14 dBm.


Outline Drawings / Mechanical Specifications
Diplexer Outlines

Mixer Outlines

 

FREQUENCY
BAND
WAVEGUIDE
SIZE
FLANGE
PATTERN
LO AND IF OUTLINE DIMENSIONS, inches/mm
A B C
K WR-42 UG-595/U SMA Jack 0.88/22.4 0.88/22.4 1.5/38.1
Ka WR-28 UG-599/U SMA Jack 0.75/19.1 0.75/19.1 1.5/38.1
Q WR-22 UG-383/U SMA Jack 1.13/28.7 1.13/28.7 1.25/31.75
U WR-19 UG-383/U SMA Jack 1.13/28.7 1.13/28.7 1.25/31.75
V WR-15 UG-385/U SMA Jack 0.75/19.1 0.75/19.1 0.75/19.1
E WR-12 UG-387/U SMA Jack 0.75/19.1 0.75/19.1 0.75/19.1
W WR-10 UG-387/U SMA Jack 0.75/19.1 0.75/19.1 0.75/19.1

Ordering Information

Model Number: QMH - AB CD E F GH  (click here for automatic web quote request form)

(Please specify exact RF and LO/IF frequency range when ordering.)

AB = RF center frequency rounded to nearest GHz
(1A = 100-109 GHz, 1B = 110-119 GHz, etc; FB = fullband)
CD = LO frequency rounded to nearest GHz
(if not fixed or defined, use XX)
E = Harmonic number:
O = Odd
E = Even
B = Both (single ended)
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
F = F-band
D = D-band
GH = Diplexer Option
00 = no diplexer provided
(customer to provide)
D1 =

diplexer provided
IF = DC-1 GHz, LO = 1.8 to 7.5 GHz

D2 = diplexer provided
IF = DC-1 GHz, LO = 5 to 20 GHz
D3 =

diplexer provided
IF = DC-2.5 GHz, LO = 5 to 20 GHz


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- Subharmonic Mixers (QHS Series) - Image-reject and Single Sideband Mixers - Single Sideband Upconverters (QSM Series)
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- Coaxial Mixers (QCM Series) Catalog Request
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