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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Mfg

Radiall (79)

Type

Connectorized (62)
Surface Mount (12)

Minimum Frequency (GHz)

0.15 (4)
0.25 (3)
0.5 (4)
0.9 (5)
1 (8)
1.7 (10)
2 (14)
3.7 (4)
4 (3)
6 (5)
7 (5)
8.5 (1)
10 (2)
12.4 (6)

Select Min 0.15 0.25 0.5 0.9 1 1.7 2 3.7 4 6 7 8.5 10 12.4
Select Max 0.15 0.25 0.5 0.9 1 1.7 2 3.7 4 6 7 8.5 10 12.4

Maximum Frequency (GHz)

0.3 (4)
0.5 (3)
1 (4)
1.1 (1)
2 (13)
2.1 (5)
2.5 (6)
4 (3)
4.2 (4)
8 (5)
8.3 (4)
10 (1)
12.4 (5)
15 (2)
18 (14)

Select Min 0.3 0.5 1 1.1 2 2.1 2.5 4 4.2 8 8.3 10 12.4 15 18
Select Max 0.3 0.5 1 1.1 2 2.1 2.5 4 4.2 8 8.3 10 12.4 15 18

Coupling Value/Precision (dB)

6 (11)
10 (31)
20 (19)
25 (1)
30 (9)

Power (W)

20 (1)
25 (1)
50 (38)
60 (12)
80 (3)
100 (2)
200 (6)
300 (4)
500 (7)

Select Min 20 25 50 60 80 100 200 300 500
Select Max 20 25 50 60 80 100 200 300 500

Dimensions

0.968 in L x 0.945 in W x 0.33 in D (3)
1.3 in L x 0.827 in W x 0.33 in D (3)
14.2 mm L x 8.9 mm W x 1.8 mm D (6)
14.2 mm L x 8.9 mm W x 2.3 mm D (6)
156 mm L x 30.4 mm W x 11.3 mm D (1)
2.31 in L x 2.9 in W (6)
25.6 mm L x 15 mm W x 10 mm D (7)
25.6 mm L x 15 mm W x 13 mm D (6)
25.6 mm L x 16.5 mm W x 13 mm D (2)
3.11 in L x 0.787 in W x 0.512 in D (1)
3.11 in L x 0.846 in W x 0.512 in D (1)
3.11 in L x 1.53 in W x 0.51 in D (1)
3.5 in L x 2.9 in W (2)
3.66 in L x 2.9 in W (1)
38 mm L x 15 mm W x 13 mm D (1)
38 mm L x 22.5 mm W x 18 mm D (2)
4.87 in L x 1.766 in W x 0.71 in D (2)
45.3 mm L x 15 mm W x 10 mm D (2)
45.3 mm L x 15 mm W x 13 mm D (2)
48 mm L x 29.6 mm W x 13 mm D (1)
49 mm L x 21 mm W x 8.3 mm D (1)
49 mm L x 21 mm W x 8.4 mm D (1)
50.8 mm L x 15 mm W x 13 mm D (3)
55.7 mm L x 22.5 mm W x 18 mm D (2)
6.14 in L x 2.9 in W (2)
79 mm L x 20 mm W x 13 mm D (1)
89 mm L x 30.2 mm W x 11 mm D (1)
9.45 in L x 2.9 in W (4)

Directivity (dB)

15 (9)
16 (5)
17 (11)
18 (4)
20 (21)
22 (5)
23 (8)
25 (1)
27 (3)
30 (7)

Select Min 15 16 17 18 20 22 23 25 27 30
Select Max 15 16 17 18 20 22 23 25 27 30

Insertion Loss (dB)

0.25 (3)
0.3 (9)
0.4 (25)
0.5 (1)
0.55 (1)
0.6 (1)
1 (22)
1.1 (2)
1.4 (1)
1.5 (1)
2 (2)
2.2 (2)

Select Min 0.25 0.3 0.4 0.5 0.55 0.6 1 1.1 1.4 1.5 2 2.2
Select Max 0.25 0.3 0.4 0.5 0.55 0.6 1 1.1 1.4 1.5 2 2.2

VSWR (-:1)

1.1 (4)
1.12 (3)
1.15 (18)
1.18 (3)
1.2 (16)
1.25 (7)
1.3 (9)
1.35 (6)
1.4 (4)
1.5 (1)

79 results found.

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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)
		R431412001	R431412001	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	1.7	2	6	60	14.2 mm L x 8.9 mm W x 2.3 mm D	20	0.3	1.2
		R431412002	R431412002	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	1.7	2	6	60	14.2 mm L x 8.9 mm W x 2.3 mm D	20	0.3	1.2
		R431412005	R431412005	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	1.7	2	6	60	14.2 mm L x 8.9 mm W x 2.3 mm D	20	0.3	1.2
		R431413001	R431413001	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	1.7	2	10	60	14.2 mm L x 8.9 mm W x 1.8 mm D	20	0.25	1.18
		R431413002	R431413002	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	1.7	2	10	60	14.2 mm L x 8.9 mm W x 1.8 mm D	20	0.25	1.18
		R431413005	R431413005	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	1.7	2	10	60	14.2 mm L x 8.9 mm W x 1.8 mm D	20	0.25	1.18
		R431612001	R431612001	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	2	2.5	6	60	14.2 mm L x 8.9 mm W x 2.3 mm D	17	0.3	1.2
		R431612002	R431612002	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	2	2.5	6	60	14.2 mm L x 8.9 mm W x 2.3 mm D	17	0.3	1.2
		R431612005	R431612005	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	2	2.5	6	60	14.2 mm L x 8.9 mm W x 2.3 mm D	17	0.3	1.2
		R431613001	R431613001	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	2	2.5	10	60	14.2 mm L x 8.9 mm W x 1.8 mm D	17	0.3	1.2
		R431613002	R431613002	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	2	2.5	10	60	14.2 mm L x 8.9 mm W x 1.8 mm D	17	0.3	1.2
		R431613005	R431613005	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	2	2.5	10	60	14.2 mm L x 8.9 mm W x 1.8 mm D	17	0.3	1.2
		R432172000	R432172000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	0.15	0.3	6	500	9.45 in L x 2.9 in W	30	2	1.1
		R432173000	R432173000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	0.15	0.3	10	500	9.45 in L x 2.9 in W	30	1	1.1
		R432174000	R432174000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	0.15	0.3	20	500	9.45 in L x 2.9 in W	30	0.4	1.1
		R432175000	R432175000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	0.15	0.3	30	500	9.45 in L x 2.9 in W	30	0.4	1.1
		R432272000	R432272000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote
		R432273000	R432273000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	0.25	0.5	10	500	6.14 in L x 2.9 in W	30	1	1.12
		R432274000	R432274000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	0.25	0.5	20	500	6.14 in L x 2.9 in W	30	0.4	1.12
		R432275000	R432275000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	0.25	0.5	30	500	156 mm L x 30.4 mm W x 11.3 mm D	30	0.4	1.12
		R432372000	R432372000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	0.5	1	6	300	3.66 in L x 2.9 in W	25	2	1.15
		R432373000	R432373000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	0.5	1	10	300	3.5 in L x 2.9 in W	27	1	1.15
		R432374000	R432374000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	0.5	1	20	300	89 mm L x 30.2 mm W x 11 mm D	27	0.4	1.15
		R432375000	R432375000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	0.5	1	30	300	3.5 in L x 2.9 in W	27	0.4	1.15
		R432433000	R432433000	Radiall	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Connectorized	1	2	10	100	49 mm L x 21 mm W x 8.3 mm D	23	1	1.15

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