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RF Directional Coupler

Radiofrequency directional couplers are passive equipment that combines voltage traveling via the communicating device with another port, allowing the signal to be embedded in another circuit. Electronic devices known as RF directional couplers allow a certain quantity of electromagnetic energy in a transmission line to be coupled to a port so that the signal may be used in another circuit.

How Do Radio Frequency Directional Couplers Work?

The fact that directional couplers only couple electricity flowing in one direction is a crucial characteristic. The isolated port receives the power entering the output port in this manner, but the coupled port is not affected. Stripling, coaxial feeding, lumped elements, and discrete components are just a few of the methods that may be used to create RF directional couplers. They may also be built as a component of a larger device that performs other activities and is housed in a variety of packaging, such as blocks with RF connections or solder pins, or they may be placed on a substrate carrier.

Directional Couplers: Rreal-world Applications

A directional coupler is an electrical component with four circuit ports, two of which are regarded as through ports and one of which is isolated from the input port. The device is typically used to distribute electricity and divide the input signal. Through one port, the device couples a portion of the transmission power by a certain factor. Application areas for directional couplers include measuring, power monitoring, and other utilities.

High directivity, excellent impedance, and a broad operating bandwidth are desirable characteristics for many directional couplers. However, the directivity factor is used to calculate the performance of a directional coupler. 

Different directional coupler types exist, including:

  • Single
  • Dual
  • Coaxial
  • Waveguide
  • Combination forms

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MACP-010563-TR1000, MACOM Technology Solutions
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MC3214-06, Fairview Microwave
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SH3731, Fairview Microwave
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MC3207-30, Fairview Microwave
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MC2017-30, Fairview Microwave
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MC3203-30, Fairview Microwave
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SH3725, Fairview Microwave
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MC0640-20, Fairview Microwave
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CPL-WB-01C2, STMicroelectronics
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SMW15EC001-20, Fairview Microwave
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RFCPL1810B2450T, Walsin Technology Corporation
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CPL-WB-00D3, STMicroelectronics
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MC51008-15, Fairview Microwave
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MC0512-10, Fairview Microwave
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MC2025-10, Fairview Microwave
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SMW10EC001-10, Fairview Microwave
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FMWCP1031, Fairview Microwave
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CP0805B244CWTR, KYOCERA AVX
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SMC4035-10, Fairview Microwave
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MC4067-20, Fairview Microwave
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SMW22EC001-10, Fairview Microwave
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CPL-5212-30-NNN-79, Cinch Connectivity Solutions Midwest Microwave
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