RF Directional Couplers

4835 Directional Couplers from 81 manufacturers listed on everything RF
Directional Couplers from the leading manufacturers are listed below. Use the filters to narrow down on products based on your requirement. Download Datasheets, Compare products and Request Quotations. Your Inquiry will be directed to the manufacturer and their distributors who will get back to you with a quote.
Description: 300 MHz to 3 GHz, 20 dB Directional Coupler
Frequency:
300 MHz to 3 GHz
Coupling:
20 dB
Directivity:
18 dB
Average Power:
100 W
Insertion Loss:
0.35 dB
Package Type:
Module with Connectors
Connector:
SMA
Grade:
Military, Commercial
more info
Description: 6 to 40 GHz, 20 Watts Directional Coupler
Frequency:
6 to 40 GHz
Coupling:
10 dB
Directivity:
12 dB
Average Power:
20 W
Insertion Loss:
1.3 dB
Package Type:
Module with Connectors
Connector:
2.4 mm, 2.4 mm - Female
Impedance:
50 Ohms
more info
Description: 2 to 18 GHz, 15 dB, SMA Directional Coupler
Frequency:
2 to 18 GHz
Coupling:
15 dB
Directivity:
15 dB
Average Power:
50 W
Package Type:
Module with Connectors
Connector:
SMA
Grade:
Commercial, Military, Space
more info
Description: DC to 18 GHz, 30 to 50 dB Directional Coupler
Frequency:
DC to 18 GHz
Coupling:
30 to 50 dB
Directivity:
12 to 22 dB
Average Power:
200 W
Insertion Loss:
0.2 to 0.7 dB
Package Type:
Module with Connectors
Connector:
N Type, N Type - Female
Impedance:
50 Ohms
more info
Description: 3.3 to 3.8 GHz, 20 dB Directional Coupler
Frequency:
3.3 to 3.8 GHz
Coupling:
20 dB
Directivity:
20 dB
Average Power:
45 W
Insertion Loss:
0.2 dB
Package Type:
Surface Mount
Impedance:
50 Ohms
Grade:
Military, Space, Commercial
more info
Description: 6 dB Directional Coupler from 0.5 to 20 GHz
Frequency:
0.5 to 20 GHz
Coupling:
6 dB
Directivity:
12 dB
Average Power:
20 W
Insertion Loss:
2.1 dB
Package Type:
Module with Connectors
Connector:
SMA, SMA - Female, SMA - Male, N Type, N Type - Fe...
more info
Description: 225 to 400 MHz, 6 dB Directional Coupler
Frequency:
225 to 400 MHz
Coupling:
6 dB
Directivity:
20 dB
Average Power:
20 W
Insertion Loss:
0.8 dB
Package Type:
Drop-In
Grade:
Commercial, Military, Space
more info
Description: 4.0 to 8.0 GHz, 30 dB, Miniature Stripline Directional Coupler
Frequency:
4.0 to 8.0 GHz
Coupling:
30 dB
Directivity:
20 dB
Average Power:
50 W
Insertion Loss:
0.2 dB
Package Type:
Module with Connectors
Connector:
SMA, SMA - Female
more info
Description: 810 to 960 MHz, 18.8 to 20.8 Db Directional Coupler
Frequency:
810 to 960 MHz
Coupling:
18.8 to 20.8 Db
Average Power:
4 W
Insertion Loss:
0.2 dB
Package Type:
Surface Mount
more info
Description: 8 to 12 GHz, 23 to 25 dB Directional Coupler
Frequency:
8 to 12 GHz
Coupling:
23 to 25 dB
Directivity:
10 dB
Insertion Loss:
0.3 dB
Package Type:
Surface Mount
Impedance:
50 Ohms
more info
Description: Low PIM Directional 30 dB 7/16 DIN Coupler To 2.7 GHz Rated to 200 Watts
Frequency:
698 MHz to 2.7 Ghz
Coupling:
30 dB
Directivity:
20 dB
Average Power:
200 W
Insertion Loss:
0.25 to 0.27 dB
Package Type:
Module with Connectors
Connector:
7/16 DIN, 7/16 DIN - Female
Impedance:
50 Ohms
Grade:
Military, Space, Commercial
more info
Description: 200 W Directional Coupler from 20 to 520 MHz
Frequency:
20 to 520 MHz
Coupling:
40 dB
Directivity:
20 dB
Average Power:
200 W
Insertion Loss:
0.4 dB
Package Type:
Module with Connectors
Connector:
SMA
more info
Description: Surface Mount Directional Coupler for DOCSIS 3.1 Systems
Frequency:
5 to 1250 MHz
Coupling:
17 dB
Average Power:
1 W
Insertion Loss:
0.8 to 1.4 dB
Package Type:
Surface Mount
Impedance:
75 Ohms
more info
Description: 500 MHz to 2 GHz, 30 dB Directional Coupler
Frequency:
500 MHz to 2 GHz
Coupling:
30 dB
Directivity:
20 dB
Average Power:
50 W
Insertion Loss:
0.2 dB
Package Type:
Module with Connectors
Connector:
N Type, N Type - Female, SMA
Grade:
Military, Commercial
more info
Description: Directional Couplers from 6 to 40 GHz for Harsh Environments
Frequency:
6 TO 40 GHz
Coupling:
10, 20 dB
Directivity:
12 dB
Average Power:
20 W
Insertion Loss:
1.3 dB
Package Type:
Module with Connectors
Connector:
2.4 mm, 2.4 mm - Female
Impedance:
50 Ohms
more info

Directional Coupler Basics & Selection

Directional Couplers are passive four port devices which are used to couple part of the signal travelling in one transmission line to another port. They are typically used for sampling signals in a system. Directional couplers can be developed using a number of techniques – striplines, lumped element or discrete elements.

Directional Coupler Operation

directional couplerA directional coupler has four ports –

  • Port 1 – Input
  • Port 2 – Output
  • Port 3 – Coupled Signal Port
  • Port 4 – Isolated Port

The power that is passing from the input (port 1) to the output (port 2) is coupled with a coupled line and passes out through the coupled output port (port 3), which is isolated from the main output port (port 4). Any reflected power from the main output is coupled to the port that is terminated, resulting in minimal reflections within the device/system. The power level of the coupled signal is a parameter to be selected based on the requirement.

Directional Coupler Selection

When selecting a directional coupler it is important to know the parameters that you need to specify. Below are a list of the key parameters to look out for when selecting a directional coupler:

Coupling: This is the amount of power transferred to the coupled port (port 3).

Insertion Loss: This is the power lost in the main line of the coupler between port 1 and port 2 (taking into account the power transferred to port 3).

Directivity: Directivity is the measure of isiolation between the coupled (port 3) and isolated port (port 4). It is calculated by measuring the power level difference between port 3 and port 4. The higher the directivity the better the performance.

Isolation: This is the difference is power level between port 1 and port 4.

Need Help?

Need Help?

x
Let us know what you need, we can help find products that meet your requirement.