RF Directional Couplers

7786 Directional Couplers from 133 manufacturers listed on everything RF

Directional Couplers are 4-port passive devices used to couple a portion of the transmitted signal traveling from input port to output port. Directional Couplers from the leading manufacturers are listed below. Use the parametric search tools to narrow down on products based on your requirement. View product details, 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:1 W, 20 dB SMT Directional Coupler from 5 MHz to 2.35 GHz
Frequency:
5 to 2350 MHz
Coupling:
20.2 to 21 dB
Directivity:
7 to 22 dB
Average Power:
1 W
Insertion Loss:
0.55 to 1.4 dB
Package Type:
Surface Mount
Impedance:
75 Ohms
more info
Description:500 W, 30 dB Directional Coupler from 0.38 to 0.96 GHz
Frequency:
0.38 to 0.96 GHz
Coupling:
30 dB
Directivity:
25 dB
Average Power:
500 W
Insertion Loss:
0.1 dB
Package Type:
Module with Connectors
Connector:
N Type, N Type - Female
Impedance:
50 Ohms
more info
Description:10, 20 or 30 dB Directional Coupler from 375 to 6000 MHz
Frequency:
375 to 6000 MHz
Coupling:
10, 20, 30 dB
Directivity:
15 to 19 dB
Average Power:
50 W
Insertion Loss:
0.4 to 1.1 dB
Package Type:
Module with Connectors
Connector:
SMA, SMA - Female
Impedance:
50 Ohms
more info
Description:30 dB Directional Coupler from 0.4 to 7.125 GHz
Frequency:
400 to 7125 MHz
Coupling:
30 ± 0.7 dB
Directivity:
15 dB
Average Power:
20 W
Insertion Loss:
0.80 dB
Package Type:
Module with Connectors
Connector:
SMA, SMA - Female
Impedance:
50 Ohms
more info
Description:Surface Mount Directional Coupler from 2 to 18 GHz
Frequency:
2 to 18 GHz
Coupling:
10 ± 1.5 dB
Directivity:
10 dB
Insertion Loss:
1.2 dB
Package Type:
Surface Mount
Impedance:
50 Ohms
more info
Description:16 dB Amplified Directional Coupler Assembly from 20 MHz to 7.2 GHz
Frequency:
20 MHz to 7.2 GHz
Coupling:
16 dB
Average Power:
20 dBm
Package Type:
Module with Connectors
Connector:
SMA, SMA - Female
more info
Description:Directional 10 dB 2.92mm Coupler From 6 GHz to 26.5 GHz Rated to 30 Watts
Frequency:
6 to 26.5 GHz
Coupling:
9 to 11 dB
Directivity:
12 dB
Average Power:
30 W
Insertion Loss:
1 dB
Package Type:
Module with Connectors
Connector:
2.92 mm, 2.92 mm - Female
Impedance:
50 Ohms
Grade:
Commercial, Military
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:
0.45 dB
Package Type:
Surface Mount
more info
SMC-073TEM0102 Image
Description:Coaxial TEM Single Loop Coupler from 1 to 2 GHz
Frequency:
1 to 2 GHz
Coupling:
30, 40, 50, 60 dB
Directivity:
14 dB
Package Type:
Module with Connectors
Connector:
SMA, SMA - Female, N Type, N Type -Female, SC Type...
more info
Description:20 dB SMT Directional Coupler from 2 to 6 GHz
Frequency:
2 to 6 GHz
Coupling:
20 dB
Directivity:
17 dB
Average Power:
150 W
Insertion Loss:
0.35 dB
Package Type:
Surface Mount
more info
Description:40 dB Directional Coupler from 100 to 400 MHz
Frequency:
100 to 400 MHz
Coupling:
38 to 42 dB
Directivity:
19 to 22 dB
Average Power:
500 W
Insertion Loss:
0.15 to 0.25 dB (true), 0.25 dB (Excl Coupling)
Package Type:
Module with Connectors
Connector:
N Type, N Type - Female
Impedance:
50 Ohms
Grade:
Commercial, Military
more info
Description:1 kW, 60 dB Directional Coupler from 2 to 8 GHz
Frequency:
2 to 8 GHz
Coupling:
60 dB
Directivity:
14 dB
Average Power:
1 kW
Insertion Loss:
0.25 dB
Package Type:
Module with Connectors
Connector:
SC Type, SC Type - Male, SC Type - Female, N Type,...
more info
Description:10 dB Directional Coupler from 2 to 18 GHz
Frequency:
2 to 18 GHz
Coupling:
10 dB
Directivity:
15 dB
Average Power:
50 W
Insertion Loss:
1 dB
Package Type:
Module with Connectors
Connector:
SMA, SMA - Female
more info
Description:20 W, 15.5 to 16.5 dB Directional Coupler from 2 to 20 GHz
Frequency:
2 to 20 GHz
Coupling:
15.5 to 16.5 dB
Directivity:
20 to 32 dB
Average Power:
20 W
Insertion Loss:
0.3 to 0.9 dB
Package Type:
Module with Connectors
Connector:
2.92 mm - Female, 2.92 mm
Impedance:
50 Ohms
Grade:
Commercial, Military
more info
Description:50 W, 10 dB Directional Coupler from 2 to 8 GHz
Frequency:
2 to 8 GHz
Coupling:
10 dB
Directivity:
18 to 31 dB
Average Power:
8 to 50 W
Insertion Loss:
0.7 to 1 dB
Package Type:
Module with Connectors
Connector:
SMA, SMA, SMA - Female
Impedance:
50 Ohms
Grade:
Commercial, Military, Space
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

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

Insertion Loss (dB): 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 (dB): Directivity is the measure of isolation 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 (dB): This is the difference in power level between port 1 and port 4.

Directional coupler products from the leading manufacturers have been listed here. We have listed directional couplers from more than 100 manufacturers and made them searchable by specification on this website. All product data has been standardized to allow the parametric search tool to function. Once you find directional couplers that meet your specification, you can view more information on the products, download datasheets and request quotations on relevant couplers. The quotation is routed to the manufacturer or their distributor in your region who will get back to you with the requested information.

We have also created product search tools for Dual-Directional CouplersBi-Directional Couplers and Hybrid Couplers.

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