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The Image Rejection Mixer of IRM-xx series is designed
for 9GHz to 43GHz frequency bands.
The general function of Image Rejection Mixer (IRM) is a
receiver's front end mixer/filter, which must greatly
attenuate the image frequency. The IRM differs from more
common balanced mixer by its capability of suppressing of
signals and
noises coming from an image channel. The inputs of IRM are LO
(local oscillator) and RF frequencies,
and the output is the difference between the LO and RF
frequencies. According to the positional relationship between
LO and RF on frequency band, the IRM could have LO>RF and LO<RF
modifications.
ELVA's Image Rejection Mixer of IRM-xx series is a
highly sensitive, low noise unit with Noise Figure at single
side band of 7dB. The image rejection ratio of our IMR is 15dB
min. The IMR is based on Schottky diode design and has
built-in amplifier which also helps to fight with a noise. The
control pins of IMR are +15V, ground pin, and Automatic Gain
Control (AGC) pin (see in photo at the top of IMR unit).
IMR-36 Image Rejection Mixer for Ka-band Specs:
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PARAMETER |
SPECIFICATIONS |
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RF Frequency Range: |
35,75- 36,75 GHz |
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LO Power: |
15 mW (min) |
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VSWR All Ports: |
1.5:1 |
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Input Power (Max.): |
+20 dBm |
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IF Output: |
60 MHz (+/-5 MHz at -3 dB level) |
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RF to IF Gain: |
20 dB
(typical) |
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Gain Flatness: |
+/-1 dB |
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Noise Figure, SSB:. |
7 dB (max) |
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Image rejection @ RF power < -20 dBm: |
15 dB (min) |
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AGC Function: total RF to IF gain |
20 dB (min) @ 0V AGC
0 dB @ -2Volts AGC |
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LO to RF isolation: |
25 dB (typ) |
Harmonics level @ 1 dB comp. point
120 MHz
180 MHz |
-25dB (max) rel. 60MHz
-30dB (max) rel. 60MHz |
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DC Power: |
+15V |
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LO/RF WG/flange: |
WR 28, UG 599/U |
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IF connector: |
SMA female |
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Output Power for 1dB gain compression: |
+0 dBm (min) |
Diagrams:
Please e-mail your requests on IRMs to
sales@elva-1.com.
We can ship IMRs of either LO>RF and LO<RF
modifications.
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