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mmWave Isolator basics and types | 5G mmwave Isolator

This application note covers mmwave Isolator basics, specifications and types. It mentions features of 5G mmwave Isolators from popular manufacturers.

What is mmwave Isolator?

Definition:
• Isolator is a non-reciprocal device which passes electromagnetic (EM) signals only in one direction and absorbs EM Waves in the opposite direction.
• The Isolators which operate in the mmwave frequency ranges are known as mmwave Isolators.
• Millimeter frequency spans from 30 GHz to 300 GHz. These frequencies are used for various applications such as millimeter wave imaging, mm wave scanner, medicine, radar, 5G cellular etc.
• Mmwave bands used in 5G wireless technology are listed in the table below.

5G mmwave bands

The mmwave Isolator types include Faraday Rotation Isolator, Cryogenic Isolator and Drop-In Isolator based on their design and construction. Following specifications are considered before selecting the mmwave Isolator for the desired applications.
• Flange Type (EIA)
• Frequency Band (GHz)
• Insertion Loss (dB)
• Isolation (dB)
• Max.Power (Watt)

5G mmwave Isolator manufacturers

➤MECA has developed mmwave isolator with part number IK-29.000. Its specifications are 0.5 dB Insertion loss, 22 dB Isolation and 27 GHz to 31 GHz frequency of operation etc. They are distributed by RFMW Ltd.
➤JQL Electronics produces mmwave wave isolator and circulator in SMT series. They are available in various frequency bands such as 18 GHz, 28 GHz and 40 GHz bands. It offers isolation upto 20 dB and insertion loss of about 0.7 dB.
➤Micro Harmonics founded in 2008 is popular manufacturer for ferrite components which perform at mmwave frequencies and beyond. The mmwave isolators from Micro Harmonics offer low insertion loss and superior isolation specifications. Following are the some of the offerings in different bands from Micro Harmonics.
• WR-12 : 60 to 90 GHz
• WR-10 : 75 to 110 GHz
• WR4.3 : 170 to 260 GHz
• WR3.4 : 220 to 330 GHz
• WR2.8 : 265 to 400 GHz
• WR2.2 : 330 to 500 GHz


5G NR Numerology | 5G NR Terminology


5G NR Control channels | 5G NR Traffic Channels | 5G NR Reference Signals and sequences



5G TECHNOLOGY RELATED LINKS

This 5G tutorial also covers following sub topics on the 5G technology:
5G basic tutorial
5G Frequency Bands
5G millimeter wave tutorial
5G mm wave frame
5G millimeter wave channel sounding
Difference between 4G and 5G
5G testing and test equipments
5G network architecture
5G NR Physical layer
5G NR MAC layer
5G NR RLC layer
5G NR PDCP layer

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