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 (15)

Type

Surface Mount (15)

Minimum Frequency (GHz)

0.7 (1)
1.4 (1)
1.7 (1)
2.2 (1)
2.3 (2)
3.1 (1)
3.3 (5)
3.6 (2)
4.4 (1)

Select Min 0.7 1.4 1.7 2.2 2.3 3.1 3.3 3.6 4.4
Select Max 0.7 1.4 1.7 2.2 2.3 3.1 3.3 3.6 4.4

Maximum Frequency (GHz)

1 (1)
2.2 (1)
2.89 (1)
3.3 (1)
3.7 (1)
3.8 (2)
5 (3)
5.1 (3)
6.3 (1)
7.1 (1)

Select Min 1 2.2 2.89 3.3 3.7 3.8 5 5.1 6.3 7.1
Select Max 1 2.2 2.89 3.3 3.7 3.8 5 5.1 6.3 7.1

Coupling Value/Precision (dB)

4.9 (1)
5.2 (1)
19.1 (1)
19.9 (1)
20 (8)
21 (1)
30 (2)

Power (W)

2 (4)
7 (2)
10 (5)
25 (4)

Select Min 2 7 10 25
Select Max 2 7 10 25

Dimensions

0.06 in x 0.03 in (1)
0.08 in x 0.05 in (8)
0.08 x 0.05 (1)
0.125 in x 0.100 in (3)
0.200 in x 0.125 in (2)

Directivity (dB)

17.2 (1)
18 (3)
19.7 (1)
20 (7)
21.4 (2)

Select Min 17.2 18 19.7 20 21.4
Select Max 17.2 18 19.7 20 21.4

Insertion Loss (dB)

0.07 (2)
0.075 (1)
0.09 (1)
0.1 (4)
0.12 (1)
0.14 (1)
0.15 (1)
0.17 (1)
0.2 (1)
0.22 (1)
0.3 (1)

Select Min 0.07 0.075 0.09 0.1 0.12 0.14 0.15 0.17 0.2 0.22 0.3
Select Max 0.07 0.075 0.09 0.1 0.12 0.14 0.15 0.17 0.2 0.22 0.3

VSWR (-:1)

1.15 (1)
1.16 (1)
1.19 (1)
1.2 (2)
1.22 (7)
1.29 (3)

15 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)
		DC0710J5020AHF	DC0710J5020AHF	TTM Technologies	RF Directional Coupler		40,000	4000	4000:   $0.7240 20000:   $0.6890 40000:   $0.6570 60000:   $0.6260	Add To Order	Quote		Surface Mount	0.7	1	20	2	0.08 in x 0.05 in	19.7	0.22	1.19
		DC1722J5020AHF	DC1722J5020AHF	TTM Technologies	RF Directional Coupler		80	1	1:   $0.6370 20000:   $0.6070 40000:   $0.5780 60000:   $0.5510	Add To Order	Quote		Surface Mount	1.7	2.2	19.9	2	0.08 in x 0.05 in	21.4	0.17	1.16
		DC2337J5020AHF	DC2337J5020AHF	TTM Technologies	RF Directional Coupler		1,770	1	1:   $0.6370 20000:   $0.6070 40000:   $0.5780 60000:   $0.5510	Add To Order	Quote		Surface Mount	2.3	3.7	19.1	2	0.08 in x 0.05 in	17.2	0.09	1.2
		DC3338J5005AHF	DC3338J5005AHF	TTM Technologies	RF Directional Coupler		2,132	1	1:   $0.6370 20000:   $0.6070 40000:   $0.5780 60000:   $0.5510	Add To Order	Quote		Surface Mount	3.3	3.8	5.2	2	0.08 in x 0.05 in	21.4	0.3	1.2
		X3C30F1-20SR	X3C30F1-20SR	TTM Technologies	RF Directional Coupler		Request Quote for Lead Time	1	Call RFPD		Quote		Surface Mount	2.3	3.8	20	25	0.200 in x 0.125 in	20	0.075	1.22
		X3C50F1-20S	X3C50F1-20S	TTM Technologies	RF Directional Coupler		3,068	1	1:   $4.0700 20000:   $3.8800 40000:   $3.7000 60000:   $3.5200	Add To Order	Quote		Surface Mount	3.6	6.3	20	25	0.200 in x 0.125 in	20	0.1	1.22
		X4C20J1-20G	X4C20J1-20G	TTM Technologies	RF Directional Coupler		986	1	1:   $0.6690 20000:   $0.6370 40000:   $0.6070 60000:   $0.5780	Add To Order	Quote		Surface Mount	1.4	2.89	21	10	0.08 in x 0.05 in	18	0.14	1.29
		X4C30J1-20G	X4C30J1-20G	TTM Technologies	RF Directional Coupler		3,454	1	1:   $0.6690 20000:   $0.6370 40000:   $0.6070 60000:   $0.5780	Add To Order	Quote		Surface Mount	2.2	3.3	20	10	0.08 in x 0.05 in	20	0.12	1.22
		X4C40J1-20G	X4C40J1-20G	TTM Technologies	RF Directional Coupler		2,904	1	1:   $0.6690 20000:   $0.6370 40000:   $0.6070 60000:   $0.5780	Add To Order	Quote		Surface Mount	3.1	5	20	10	0.08 in x 0.05 in	18	0.1	1.29
		X4C40K1-20SR	X4C40K1-20SR	TTM Technologies	RF Directional Coupler		Request Quote for Lead Time	8000	8000:   $1.8100 40000:   $1.7300 80000:   $1.6500 120000:   $1.5700	Add To Order	Quote		Surface Mount	3.3	5.1	20	25	0.125 in x 0.100 in	20	0.07	1.22
		X4C40K1-20SR1	X4C40K1-20SR1	TTM Technologies	RF Directional Coupler		931	1	1:   $2.0200 2500:   $1.9800 5000:   $1.9400 7500:   $1.9000	Add To Order	Quote		Surface Mount	3.3	5.1	20	25	0.125 in x 0.100 in	20	0.07	1.22
		X4C40L1-30G	X4C40L1-30G-CT	TTM Technologies	RF Directional Coupler		4,000	1	Call RFPD		Quote		Surface Mount	3.3	5	30	7	0.06 in x 0.03 in	20	0.1	1.22
		X4C40L1-30G-CT	X4C40L1-30G-CT	TTM Technologies	RF Directional Coupler		Request Quote for Lead Time	0	Call RFPD		Quote		Surface Mount	3.3	5	30	7	0.08 x 0.05	20	0.1	1.22
		X4C45K1-05SR1	X4C45K1-05SR1	TTM Technologies	RF Directional Coupler		500	500	500:   $1.9700 2500:   $1.9300 5000:   $1.8900 7500:   $1.8500	Add To Order	Quote		Surface Mount	3.6	5.1	4.9	10	0.125 in x 0.100 in		0.2	1.15
		X4C60J1-20G	X4C60J1-20G	TTM Technologies	RF Directional Coupler		Request Quote for Lead Time	4000	4000:   $0.8260 20000:   $0.7870 40000:   $0.7490 60000:   $0.7130	Add To Order	Quote		Surface Mount	4.4	7.1	20	10	0.08 in x 0.05 in	18	0.15	1.29