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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TTM Technologies (2)

Type

Surface Mount (2)

Minimum Frequency (GHz)

2 (1)
2.3 (1)

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Maximum Frequency (GHz)

2.7 (1)
4 (1)

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Coupling Value/Precision (dB)

10 (2)

Power (W)

2 (1)
20 (1)

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Dimensions

0.08 in x 0.05 in (1)
0.25 in x 0.20 in (1)

Directivity (dB)

20 (1)
25.2 (1)

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Insertion Loss (dB)

0.15 (1)
0.25 (1)

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VSWR (-:1)

1.06 (1)
1.22 (1)

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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)
		1P610S	1P610S	TTM Technologies	RF Directional Coupler		185	1	1:   $2.3400 10000:   $2.2300 20000:   $2.1200 30000:   $2.0200	Add To Order	Quote		Surface Mount	2.3	2.7	10	20	0.25 in x 0.20 in	20	0.25	1.22
		DC2337J5010AHF	DC2337J5010AHF	TTM Technologies	RF Directional Coupler		1,103	1	1:   $0.6690 20000:   $0.6370 40000:   $0.6070 60000:   $0.5780	Add To Order	Quote		Surface Mount	2	4	10	2	0.08 in x 0.05 in	25.2	0.15	1.06