RF Directional Couplers

5660 Directional Couplers from 88 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 Watts, Surface Mount Directional Coupler from 100 to 500 MHz
Frequency:
100 to 500 MHz
Coupling:
40 dB
Directivity:
20 dB
Average Power:
300 W
Insertion Loss:
0.25 dB
Package Type:
Surface Mount
more info
Description: 2000 to 18000, 6,10,16,20 ±1.0 dB, Broadband Miniature Stripline Directional Coupler
Frequency:
2000 to 18000
Coupling:
6, 10, 16, 20 ±1.0 dB
Insertion Loss:
0.9 dB
Connector:
SMA - Female
more info
Description: 16 dB Surface Mount Coupler
Frequency:
5 to 1200 MHz
Coupling:
16.0 ±0.5 dB
Directivity:
20 dB
Insertion Loss:
0.8 dB
Package Type:
Surface Mount
more info
Description: 2 GHz to 8 GHz, 10 dB coupling, Directional Coupler
Type:
Directional Coupler
Frequency:
2 to 8 GHz
Coupling:
10 dB
Directivity:
27 dB
Average Power:
20 W
Insertion Loss:
1.4 dB
Package Type:
Module with Connectors
Connector:
SMA, SMA - Female
Impedance:
50 Ohms
Grade:
Commercial, Military
more info
Description: Low Loss Directional Coupler from 0.5 to 12 GHz
Frequency:
500 to 12000 MHz
Coupling:
17.5 dB
Directivity:
20 dB
Average Power:
80 Watts
Insertion Loss:
0.17 to 0.64 dB
Package Type:
Module with Connectors
Connector:
SMA, APC-7
Impedance:
50 Ohms
Grade:
Military, Commercial
more info
Description: 10 dB Uni-Directional Coupler from 150-174 MHz
Frequency:
150 to 174 MHz
Coupling:
10 dB
Directivity:
20 dB
Average Power:
50 W
Insertion Loss:
0.7 dB
Grade:
Military
more info
Description: 300 Watt, Low PIM Directional Coupler from 0.698 to 2.7 GHz
Frequency:
698 to 2700 MHz
Coupling:
10 +/- 1 dB
Directivity:
21 dB
Average Power:
300 W
Insertion Loss:
0.2 dB
Package Type:
Module with Connectors
Connector:
N Type, N Type - Female
more info
Description: Octave Band SMA Directional Couplers from 0.5 GHz to 18 GHz
Type:
Octave Bands Directional Coupler
Frequency:
0.5 to 18 GHz
Coupling:
6 to 30 dB
Directivity:
15 to 25 dB
Average Power:
50 W
Insertion Loss:
0.15 to 0.60 dB
Package Type:
Module with Connectors
Connector:
SMA
more info
Description: 6 dB, Directional Coupler from 10 GHz to 67 GHz
Frequency:
10 to 67 GHz
Coupling:
6 ± 2.5 dB
Directivity:
10 dB
Average Power:
20 W
Insertion Loss:
4.4 dB
Package Type:
Module with Connectors
Connector:
1.85 mm
Grade:
Military, Space, Commercial
more info
Type:
Directional Coupler
Frequency:
1420 to 1660 MHz
Coupling:
18.4 dB
Insertion Loss:
0.2 dB
Package Type:
Surface Mount
more info
Description: 1700 to 2200 MHz Directional Coupler for AMPS, GSM, WCDMA & LTE
Frequency:
1700 to 2200 MHz
Coupling:
20.0 ±0.5 dB
Directivity:
25 dB
Average Power:
25 W
Insertion Loss:
0.05 dB
Package Type:
Surface Mount
more info
Description: 12 to 18 GHz, 20 to 22 dB Directional Coupler
Frequency:
12 to 18 GHz
Coupling:
20 to 22 dB
Directivity:
14 dB
Insertion Loss:
0.3 dB
Package Type:
Surface Mount
Impedance:
50 Ohms
more info
Description: 50 dB Dual-Directional Coupler from 20 to 1000 MHz
Frequency:
20 to 1000 MHz
Coupling:
50 +/- 1 dB
Directivity:
20 dB
Average Power:
250 W CW
Insertion Loss:
0.2 dB
Package Type:
Module with Connectors
Connector:
N Type, N Type - Female, SMA
Grade:
Commercial
more info
Type:
Directional Coupler
Frequency:
500 to 1000 MHz
Coupling:
10 dB
Directivity:
18 dB
Average Power:
50 W
Insertion Loss:
0.8 dB
Package Type:
Module with Connectors
more info
Description: 500 MHz to 2500 MHz Surface Mount Directional Coupler
Type:
Directional Coupler
Frequency:
500 to 2500 MHz
Coupling:
36 dB
Directivity:
20 dB
Average Power:
200 W
Insertion Loss:
0.25 dB
Package Type:
Surface Mount
Grade:
Military, Commercial
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.

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