RF Directional Coupler

An RF Directional Coupler is a passive 4-port device which accepts an input RF signal and divides it into 2 output signals. These output signals are quite unequal in amplitude: the outputs differ in power level by the coupling value, in dB. The larger signal is at the main-line output port. The smaller signal is at the coupled port. The fourth port is called the “Isolated” port and is typically terminated with a resistor (when terminated internally, the isolated port is usually unavailable). RF Directional Couplers are used in many circuit and system applications, such as Test & Measurement, RF amplifiers, transmitters and receivers. Richardson RFPD carries a wide assortment of RF Directional Couplers, including coaxial-connectorized, surface mount, and waveguide type units. These products cover frequency ranges from 10 MHz to 18 GHz, including octave and multi-octave ranges in 5dB to 30dB values. Performance grades range from low-cost commercial to rugged military. Specific attributes which are important in selecting the right RF Directional Coupler for your application include: Type (Connectorized, Surface Mount or Waveguide); Power (W) – maximum input level; Frequency Range (GHz) of Operation; Coupling Value/Precision (dB), Directivity (dB); Insertion Loss (dB); Dimensions; and VSWR (ratio).

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Richardson RFPD (2)

Type

Connectorized (2)

Minimum Frequency (GHz)

2 (2)

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Maximum Frequency (GHz)

18 (2)

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Coupling Value/Precision (dB)

10 (1)
20 (1)

Power (W)

25 (2)

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Dimensions

44.5 mm L x 17 mm W x 11 mm H (2)

Directivity (dB)

15 (2)

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Insertion Loss (dB)

0.7 (1)
1.2 (1)

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VSWR (-:1)

1.5 (2)

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	Image	Item	Mfg Part #	Mfg	Description	Datasheet	Availability	Min/Mult	Price (US Stock)	Quantity		ECAD Model	Type	Minimum Frequency (GHz)	Maximum Frequency (GHz)	Coupling Value/Precision (dB)	Power (W)	Dimensions	Directivity (dB)	Insertion Loss (dB)	VSWR (-:1)
		RCPC020180A10S	RCPC020180A10S	Richardson RFPD	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	2	18	10	25	44.5 mm L x 17 mm W x 11 mm H	15	1.2	1.5
		RCPC020180A20S	RCPC020180A20S	Richardson RFPD	RF Directional Coupler		3	1	1:   $155.0400	Add To Order	Quote		Connectorized	2	18	20	25	44.5 mm L x 17 mm W x 11 mm H	15	0.7	1.5