Industry-Verified Manufacturing Data (2026)

Directional Couplers

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Directional Couplers used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Directional Couplers is characterized by the integration of Main Transmission Line and Coupled Line. In industrial production environments, manufacturers listed on CNFX commonly emphasize Copper (conductors) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Passive microwave/RF components that sample a portion of signal power from a transmission line in a specific direction while maintaining isolation from signals traveling in the opposite direction.

Product Specifications

Technical details and manufacturing context for Directional Couplers

Definition
Directional couplers are essential components within network analyzers used to extract a known fraction of the signal power traveling through the main transmission line (forward or reverse direction) for measurement purposes. They enable the network analyzer to measure reflection coefficients (S11, S22) and transmission coefficients (S21, S12) by separating incident and reflected waves.
Working Principle
Directional couplers operate through electromagnetic coupling between two transmission lines placed in close proximity. The coupling mechanism (capacitive, inductive, or aperture-based) transfers a portion of the signal power from the main line to the coupled port. The directivity property ensures that signals traveling in the forward direction are coupled to one port while signals in the reverse direction are coupled to another port or isolated.
Common Materials
Copper (conductors), Dielectric substrate (e.g., PTFE, ceramic), Aluminum (housing)
Technical Parameters
  • Coupling factor (typically 10-30 dB), directivity (20-40 dB), insertion loss (<0.5 dB), and VSWR (<1.5:1) are critical performance parameters. (dB) Customizable
Components / BOM
  • Main Transmission Line
    Carries the primary signal between input and output ports
    Material: Copper
  • Coupled Line
    Electromagnetically couples to the main line to extract sample power
    Material: Copper
  • Dielectric Substrate
    Provides structural support and determines electrical properties
    Material: PTFE or ceramic
  • RF Connectors
    Interface for connecting to test equipment and devices under test
    Material: Brass with gold plating

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Directional Couplers.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Factories Producing Directional Couplers

Verified manufacturers with capability to produce this product in China

✓ 98% Supplier Capability Match Found

S Sourcing Manager from Singapore Mar 04, 2026
★★★★★
"As a professional in the Computer, Electronic and Optical Product Manufacturing sector, I confirm this Directional Couplers meets all ISO standards."
Technical Specifications Verified
P Procurement Specialist from Germany Mar 01, 2026
★★★★☆
"Standard OEM quality for Computer, Electronic and Optical Product Manufacturing applications. The Directional Couplers arrived with full certification. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Brazil Feb 26, 2026
★★★★★
"Great transparency on the Directional Couplers components. Essential for our Computer, Electronic and Optical Product Manufacturing supply chain."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

11 sourcing managers are analyzing this specification now. Last inquiry for Directional Couplers from UAE (27m ago).

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Frequently Asked Questions

What is Directional Couplers?

In the Computer, Electronic and Optical Product Manufacturing sector, Directional Couplers refers to Passive microwave/RF components that sample a portion of signal power from a transmission line in a specific direction while maintaining isolation from signals traveling in the opposite direction..

Which factories produce Directional Couplers in China?

CNFX has identified 18 professional manufacturers for Directional Couplers.

What materials are used in Directional Couplers?

Most Directional Couplers units utilize Copper (conductors), Dielectric substrate (e.g., PTFE, ceramic) for durability.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

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