Directional Couplers


This series of dual directional couplers provides high directivity and low insertion loss over specific bandwidths. Design package accommodates SMA, N, BNC and TNC connectors. Design modification may be necessary for non-SMA connectors. 


  • Low Insertion Loss
  • Multi-Octave Band Coverage
  • Compact Size
  • Standard SMA Connectors (N, BNC, TNC optional)

Finish: Chemical Conversion Coating per MIL-DTL-5541 Class 3 (optional paint available upon request)
Marking: All units supplied with P/N and date code on polyester label (special marking available upon request)
Electrical Test: All units tested on a Go/No-go basis (plotted data available upon request). Specifications indicated are subject to change. Unless otherwise specified, electrical properties correspond to use with standard SMA connectors. Insertion loss excludes coupled power.
Dimensions: All dimensions are expressed in inches, (1 inch = 25.4mm). All dimensions indicated are subject to change. Unless otherwise specified, tolerances for decimals are ±0.02 for .XX and ±0.005 for .XXX. Tolerances for angles are ±0°30'.
Temperature: Units designed to operate -55° to +85° C.

General Parameters:
Type: Dual Directional Couplers
Frequency: 0.225 to 0.400 GHz
Low Frequency [MHz]: 225
High Frequency [MHz]: 400
Insertion Loss [dB]: 0.25
Coupling [dB]: 20 ±0.5
VSWR 1 [:1]: 1.30:1
VSWR 2 [:1]: 1.30:1
Input Power [W]: 50
Directivity [dB]: 25
Coupling Variation: ±0.8
Power Incident: 50
Power Reflected: 50
Peak Power: 3

3D View

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