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Waveguide Isolator

A waveguide isolator is a passive device used in the RF and microwave frequency bands to achieve unidirectional transmission and isolation of signals. It has the characteristics of low insertion loss, high isolation, and broadband, and is widely used in communication, radar, antenna and other systems.

The basic structure of waveguide isolators includes waveguide transmission lines and magnetic materials. A waveguide transmission line is a hollow metal pipeline through which signals are transmitted. Magnetic materials are usually ferrite materials placed at specific locations in waveguide transmission lines to achieve signal isolation. The waveguide isolator also includes load absorbing auxiliary components to optimize performance and reduce reflection.


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RFTYT 4.0-46.0G Waveguide Isolator Specification
Model   Frequency Range (GHz) Bandwidth (MHz) Insert loss (dB) Isolation (dB) VSWR Dimension W×L×Hmm Waveguide Mode
BG8920-WR187 4.0-6.0 20% 0.3 20 1.2 200 88.9 63.5 WR187 PDF
BG6816-WR137 5.4-8.0 20% 0.3 23 1.2 160 68.3 49.2 WR137 PDF
BG5010-WR137 6.8-7.5 Full 0.3 20 1.25 100 50 49.2 WR137 PDF
BG3676-WR112 7.0-10.0 10% 0.3 23 1.2 76 36 48 WR112 PDF
7.4-8.5 Full 0.3 23 1.2 76 36 48 WR112 PDF
7.9-8.5 Full 0.25 25 1.15 76 36 48 WR112 PDF
BG2851-WR90 8.0-12.4 5% 0.3 23 1.2 51 28 42 WR90 PDF
8.0-12.4 10% 0.4 20 1.2 51 28 42 WR90 PDF
BG4457-WR75 10.0-15.0 500 0.3 23 1.2 57.1 44.5 38.1 WR75 PDF
10.7-12.8 Full 0.25 25 1.15 57.1 44.5 38.1 WR75 PDF
10.0-13.0 Full 0.40 20 1.25 57.1 44.5 38.1 WR75 PDF
BG2552-WR75 10.0-15.0 5% 0.25 25 1.15 52 25 38 WR75 PDF
10% 0.3 23 1.2
BG2151-WR62 12.0-18.0 5% 0.3 25 1.15 51 21 33 WR62 PDF
10% 0.3 23 1.2
BG1348-WR90 8.0-12.4 200 0.3 25 1.2 48.5 12.7 42 WR90 PDF
300 0.4 23 1.25
BG1343-WR75 10.0-15.0 300 0.4 23 1.2 43 12.7 38 WR75 PDF
BG1338-WR62 12.0-18.0 300 0.3 23 1.2 38.3 12.7 33.3 WR62 PDF
500 0.4 20 1.2
BG4080-WR75 13.7-14.7 Full 0.25 20 1.2 80 40 38 WR75 PDF
BG1034-WR140 13.9-14.3 Full 0.5 21 1.2 33.9 10 23 WR140 PDF
BG3838-WR140 15.0-18.0 Full 0.4 20 1.25 38 38 33 WR140 PDF
BG2660-WR28 26.5-31.5 Full 0.4 20 1.25 59.9 25.9 22.5 WR28 PDF
26.5-40.0 Full 0.45 16 1.4 59.9 25.9 22.5
BG1635-WR28 34.0-36.0 Full 0.25 18 1.3 35 16 19.1 WR28 PDF
BG3070-WR22 43.0-46.0 Full 0.5 20 1.2 70 30 28.6 WR22 PDF

Overview

The working principle of waveguide isolators is based on asymmetric transmission of magnetic fields. When a signal enters the waveguide transmission line from one direction, magnetic materials will guide the signal to transmit in the other direction. Due to the fact that magnetic materials only act on signals in a specific direction, waveguide isolators can achieve unidirectional transmission of signals. Meanwhile, due to the special properties of the waveguide structure and the influence of magnetic materials, the waveguide isolator can achieve high isolation and prevent signal reflection and interference.

Waveguide isolators have multiple advantages. Firstly, it has low insertion loss and can reduce signal attenuation and energy loss. Secondly, waveguide isolators have high isolation, which can effectively separate input and output signals and avoid interference. In addition, waveguide isolators have broadband characteristics and can support a wide range of frequency and bandwidth requirements. Also, waveguide isolators are resistant to high power and suitable for high-power applications.

Waveguide isolators are widely used in various RF and microwave systems. In communication systems, waveguide isolators are used to isolate signals between transmitting and receiving devices, preventing echoes and interference. In radar and antenna systems, waveguide isolators are used to prevent signal reflection and interference, improving system performance. In addition, waveguide isolators can also be used for testing and measurement applications, for signal analysis and research in the laboratory.

When selecting and using waveguide isolators, it is necessary to consider some important parameters. This includes the operating frequency range, which requires selecting a suitable frequency range; Isolation degree, ensuring good isolation effect; Insertion loss, try to choose low loss devices; Power processing capability to meet the power requirements of the system. According to specific application requirements, different types and specifications of waveguide isolators can be selected.


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