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CNCR: Leading Directional Coupler Supplier

 

 

CNCR is a global leading supplier providing telecom access network solutions. Since the company was successfully listed in 2011, CNCR has always adhered to independent research and development and technological innovation, and successfully passed the highest level CMMI5 certification in the global software field.

 

 
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Directional couplers are used as a measuring device to monitor the coupling out signals. The coupling value is from 3 dB to 60 dB or more.
Applied to the network sites demanding for corresponding signal strength and also as a signal power monitoring device.

 

 
Why Choose Us
 
01/

Professional Engineer
500+ experts provides innovative solutions to ensure project quality and reliability.

02/

Customizable R&D
Meet personalized needs, reduce costs, protect intellectual property rights, improve competitiveness, and enhance user experience.

03/

Real-Time Support
7*24 hours global technical support service, quickly solve problems and improve user experience.

04/

Certified Quality
CNCR products have passed various international certifications such as ISO, CE, ROHS, improve customers' market competitiveness.

 

Specification

 

Part number

ZHCP-408020NS-2U1A

Coupling(dB)

20

Frequency (MHz)

4000-8000

Insertion Loss(dB)

≤0.3

Ripple in band(dB)

≤±1.5

Directivity(dB)

≥20

VSWR

≤1.2

Impedance(Ω)

50

PIM3(dBc)*

N/A

Connectors

N-F/SMA-F

Power rating(W)

100

Temperature(℃)

-30~+70

 

Construction of Directional Couplers

 

Directional couplers are commonly built the use of a number of technology, together with microstrip, strip line, or waveguide configurations:

 
01
 

Main Line

Carries the number one sign from the enter to the output port.

 
02
 

Coupled Line

Connected to the coupled port, extracts a part of the sign for coupling.

 
03
 

Isolation Line

Isolates the coupled and remoted ports to minimize signal leakage.

3db Directional Coupler

 

Key Ports in a Directional Coupler
1

Input Port

Where the main RF signal is fed into the coupler.

2

Output (Through) Port

The main signal continues through this port with minimal insertion loss.

3

Coupled Port

Receives a small fraction of the input signal.

4

Isolated Port

Ideally has no signal in the direction opposite to the coupled port (terminated to prevent reflection).

 

Benefits of Directional Coupler

 
 

Enhanced Signal Integrity
One of the primary benefits of utilizing directional couplers is enhanced signal integrity. By ensuring minimal interference with the main signal path, directional couplers maintain the original signal’s strength and quality.

 
 

Improved Measurement Accuracy
Another significant benefit is the improved measurement accuracy offered by directional couplers. High directivity and isolation enable precise differentiation between forward and reflected signals.

 
 

Compact Size
Directional couplers are small-footprint, low-profile devices, of which microstrip or stripline types are particularly compact, so they can be built into PCBs and RF modules.

 
 

Minimal Insertion Loss
A well-designed directional coupler introduces very low insertion loss in the main line. That means it barely affects the power or quality of the transmitted signal.

 
 

Durable and Reliable
Directional Coupler with high-quality materials and advanced engineering, the coupler is highly durable and reliable, providing long-term operation without degradation in performance.

 

 

Applications of Directional Couplers
 

Power Monitoring: Directional couplers are appreciably used for electricity monitoring in communique networks. By extracting a fragment of the signal power without good sized interference, they enable accurate dimension and monitoring of energy levels.

 

Signal Sampling: In check and measurement setups, directional couplers are hired for sign sampling. They facilitate the extraction of consultant samples of signals for analysis with out affecting the number one signal path.

 

Network Analysis: Directional couplers play a key function in network analyzers, helping within the evaluation and characterization of RF circuits. They allow the dimension of meditated and transmitted alerts, helping engineers understand the behavior of the network.

 

Antenna Systems: Directional couplers are essential components in antenna structures, facilitating the tracking and adjustment of sign levels. They ensure that the alerts transmitted and obtained by way of antennas are correctly managed.

 

Amplifier Systems: In amplifier structures, directional couplers are used for signal sampling and tracking at various tiers. This allows optimize amplifier overall performance and guarantees that alerts are within preferred strength degrees.

 

Balanced Signal Processing: Quadrature hybrids, a type of directional coupler, find packages in balanced signal processing. They are utilized in structures in which specific phase relationships between indicators are critical, including in segment-locked loops and balanced modulators.

 

Transceiver Systems: Directional couplers are employed in transceiver structures for signal tracking and comments. They play a function in maintaining sign integrity, making sure that transmitted and obtained alerts meet distinct criteria.

 

Microwave Systems: Microwave communique systems gain from directional couplers for tasks along with electricity splitting and mixing. They make a contribution to efficient signal distribution and control in microwave packages.

 

RF Filters and Duplexers: Directional couplers are used together with RF filters and duplexers to split or combine alerts in frequency department duplexing (FDD) structures. This is commonplace in wireless verbal exchange networks.

 

Laboratory Instruments: Directional couplers are critical additives in diverse laboratory devices, such as spectrum analyzers, vector community analyzers, and oscilloscopes. They facilitate accurate signal measurements and evaluation.

 

20db Directional Coupler

 

Usage Requirements

☆Ensure the directional coupler operates within the specified frequency range of the system to maintain accurate coupling and isolation performance.


☆Verify that the input and coupled ports can handle the maximum expected power level without causing damage or distortion.


☆Always terminate the isolated port with the correct load to prevent signal reflections and measurement errors.


☆Install the coupler in an environment that meets its rated temperature, humidity, and mechanical stability specifications to ensure long-term reliability.

 

 

How to Place Your Order
  • Send us your order list (models/quantities/specification).
  • We will send you PROFORMA INVOICE (PI) with shipping cost and Payment information for your confirmation.
  • You arrange payment after you confirmed proforma invoice, we will arrange production after received your payment notice.
  • We will arrange delivery after your payment arrived and goods ready,and at the same time we will tell you goods tracking number so that you could know your goods condition by this number from courier site.
  • You will receive your order in about 3-5 days after goods ship out.
20db Rf Directional Coupler

 

Packaging & Shipping

 

Trade Terms:

FOB, CIF, CFR, etc

Price Terms:

T/T, Western Union, Paypal, L/C, RMB, Credit Card

Lead Time:

Generally, if the goods are in stock, shipment can be arranged within 3 working days;

If the goods need to be mass produced, delivery time may be around 7-10 working days.

Shipment:

Express, Air, Sea

Package Information:

Standard carton package with the original package

 

Video

 

 

Patents & Certificates
 

In pursuing innovation of cutting-edge technologies, CNCR has been publishing patents every year.

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Factory Environment

 

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FAQ

 

Q: Are you trading company or manufacturer?

A: We are manufacturer, having our own factories.

Q: Do you provide samples ? is it free or extra?

A: Sorry, we can not provide free samples

Q: How long i can get the feedback after we sent the enquiry?

A: We will reply you within 12 hours in working day.

Q: Can you do our design?

A: Of course, your customized design (OEM) is available.

Q: Can you make our design for the package?

A: Yes, please send us the design you need ,we will value the price and make the exact same package basing on your design.

Q: Does a directional coupler need power?

A: A directional coupler does not need power if it is used only to couple two ports. If, however, the directional coupler is used to sample the incident or reflected power from one of the coupled ports, then a DC bias voltage must be applied to generate the desired output voltage from the sampling port.

Q: What is a directional coupler?

A: A directional coupler is a four-terminal passive radio frequency RF component that enables a small fraction of an RF signal to be sampled out of a transmission line, depending on which direction the signal is propagating. Directional couplers are different in that, unlike power splitters, they are engineered to take out a portion (fraction) of the signal in one direction only.

Q: Key considerations for selecting directional couplers?

A: Frequency Range: Must cover the target system’s operating band (e.g., Sub-6 GHz, mmWave).
Power Handling Capacity: Select power ratings based on input levels to avoid device damage.
Directivity: High directivity (>20 dB) minimizes reflected signal interference, enhancing monitoring accuracy.
Packaging: Coaxial, waveguide, or PCB-integrated designs must align with spatial constraints.

Q: How does a directional coupler work?

A: Directional couplers perform based totally on electromagnetic principles, permitting them to correctly couple and screen indicators in radio frequency (RF) and microwave systems. The symmetrical arrangement of the coupled strains guarantees consistent coupling traits, contributing to the reliability and predictability of the directional coupler's performance.

Q: What are common properties desired for a directional coupler?

A: Common properties desired for all directional couplers are wide operational bandwidth, high directivity, and a good impedance match at all ports when the other ports are terminated in matched loads.

Q: Aren’t all directional couplers created equal?

A: In designing directional couplers for practical bandwidths, computer modeling and attention to design details help minimize causes of signal loss. What makes the performance of any directional coupler unique is that it’s consistent across any specified bandwidth — not just in loss behavior, but in coupling, VSWR, and other critical parameters that gauge a directional coupler’s usefulness.

Q: What performance degradation occurs if a 50Ω directional coupler is used in a 75Ω system?

A: The most pronounced effect is a reduction in directivity because the internal 50Ω termination would give a VSWR of 1.5:1. The directivity would be limited to the corresponding return loss, 14 dB.

Q: What is the difference between a 3-port and a 4-port coupler?

A: A directional coupler is basically a 4-port network. The main-line and auxiliary line each have 2 ports: a 3-port coupler has one end of this auxiliary line, the “isolated port,” internally terminated. When all 4 ports are made available to the user, the device is called a “bi-directional coupler.”

We're well-known as one of the leading directional coupler manufacturers in China since 1999, specialized in providing high quality customized products. Welcome to buy cheap directional coupler for sale here from our factory. For price consultation, contact us.

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