3A0200

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RF directional couplers are passive components used in radio-frequency (RF) circuits to measure the power of an incoming radio signal or to feed a sample of the signal to another circuit. They are commonly used to provide power measurement and signal sampling in RF-communication systems. Since they rely on electromagnetic coupling rather than conductive connections, they are often referred to as non-contact couplers.

3A0200 Application Field and Working Principle

The 3A0200 RF directional coupler is designed to provide power measurement in a wide range of RF communication systems. The coupler has a wide frequency range, with operation from 50 MHz to 6 GHz, and an insertion loss of less than 0.3 dB. It has a coupling factor of 30 dB nominal, and the directivity is greater than 55 dB at all frequencies within the specified range. The 3A0200 is available in several different form factors, including a modular package, a surface-mount form-factor package, and a wire-bondable form-factor package.

The 3A0200 RF directional coupler works by electromagnetically coupling the incoming signal with a secondary signal, which is then directed to a coupling port. This allows the power of the incoming signal to be measured without electrically connecting the two circuits. The secondary signal is created by a spool of transmission line that is inductively coupled to the main line. The inductance of the spool, which is usually round, is adjustable, which allows the coupling factor to be adjusted. In addition, the directivity of the coupler can also be adjusted by changing the distance between the spool, the main line, and the coupling port.

The 3A0200 is a versatile coupler that can be used in a wide variety of applications, including radio-frequency communications systems, digital signal processing, and antenna measurements. It is available in both coaxial and waveguide configurations, making it well-suited for most RF communication applications. The coupler\'s wide frequency range and good directivity make it suitable for use in both indoor and outdoor environments.

Overall, the 3A0200 RF directional coupler is an excellent choice for RF-communication systems that require power measurement and signal sampling. Its wide frequency range, low insertion loss, and adjustable coupling factor and directivity make it an ideal option for many different applications.

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