Passives Modules

Find RF Components Easily On NCL

NCL is well equipped to meet the demands of isolators, circulators, couplers, splitters/dividers, and terminations.

Isolators

RF isolator consists of ferrite material and magnets. Its functions are multiple. Being traffic conductors of RF energy, they act non-reciprocally. As they have two ports - port 1 and po...

Find RF Components Easily On NCL

NCL is well equipped to meet the demands of isolators, circulators, couplers, splitters/dividers, and terminations.

Isolators

RF isolator consists of ferrite material and magnets. Its functions are multiple. Being traffic conductors of RF energy, they act non-reciprocally. As they have two ports - port 1 and port 2, the energy applied passes in a single direction. It is called ‘isolation’. Its basic function is to keep RF components safe by not allowing the reflected power and signals to come back to the transmitter output.

For selecting a good isolator, you need to consider 4 aspects – isolation, insertion loss, power and configuration. Isolation is measured in dB (decibel) and choosing an isolator with a higher dB will offer enhanced protection. Insertion loss is also measured in dB and it defines the loss that occurs between port 1 and 2. Power is measured in W. The forward power of port 1 tells how much power the isolator can handle while reverse power of port 2 tells how much the isolator can absorb.

Configuration of an isolator differs. You can get it in surface mount packages, drop-in packages, and connectorized modules. With our useful search option, you can look for the type of isolator you need.

Circulators

It is a ferromagnetic device consisting of 3 ports; it controls the flow of signal in a circuit. The signal circulation goes in a single direction and happens in either clockwise or counter clockwise direction. When it enters port 1, it goes to port 2 and is restricted from reaching port 3. When the incident signal is at port 2, it goes straight to port 3 and is stopped from reaching port 1. Similarly, when the incident is at port 3, it goes to port 1 and is restricted from reaching port 2. Manufacturers design circulators in a way so that there is little insertion loss when the signal travels from port to port.

At NCL, we have a good number of circulators from which you can choose the most appropriate one. For making a selection, you need to take into account frequency, insertion loss, isolation, and type. Frequency, which is measured in MHz, is the range on which the circulator provides isolation and insertion loss. Loss of signal from one port to the next port is called insertion loss. It is calculated in dB. Isolation is also calculated in dB and is measured between the port where signal is incident and the restricted port. The higher the isolation, the better will be the performance of the circulator. Power is calculated in W and its measurement defines how much the device is capable of handling. You will find circulators in different types – surface mount, modules with connectors, drop-in, etc.

Couplers

Amongst others, they are used for measuring reflected power, generation of signal, signal sampling, and signal injection. A coupler accepts one signal and produces two signals – one regular and the other is coupled.

The coupled signal’s power varies with the type of coupler. There are different types of couplers available on NCL. Some of the most popular types are directional couplers, dual directional couplers, 90° hybrid couplers, and 180° hybrid couplers.

Features that define a coupler include frequency, coupling, insertion loss, and directivity. For purchasing the most appropriate coupler, you need to check if it has the desirable frequency so that there is consistent coupling without much reflection and insertion loss. Next is coupling, which is the ratio between the incident power and output power. Insertion loss is the loss of power when a signal is coupled. Directivity is the difference in the power level between isolated and coupled ports. You will find the important features of the couplers mentioned on this website, which makes product selection very convenient.

Splitters/dividers

RF power splitters/dividers are important components in telecommunications. As the name suggests, the splitters/dividers accept a single signal as input and divide it into two signals as output. Each output signal has 50% of the original signal.

There are chiefly two kinds of power splitters resistive and hybrid. A resistive power splitter facilitates impedance but also encourages loss due to splitting. On the other hand, a hybrid power splitter uses transformers instead of resistors. The biggest advantage is that the loss is divided between the outputs. On NCL, you will find a big range of splitters/dividers from different manufacturers for your projects.

Terminations

Terminations are very important RF components. They are responsible for absorbing incident power with negligible reflection thereby not letting the reflection re-enter the circuit. In an RF system, where multiple ports are being used, the unused ones should be terminated using terminations. Hence, these devices are used in isolators, couplers, test equipment, hybrids, and so on.

On NCL, you will be able to find the most suitable terminations for every type of project. Chief features that define a termination are impedance, power, VSWR & return loss, and package type. Impedance is the most important feature and it should match with the characteristic impedance of the terminated port. Most common terminations are available in 50 Ohms and 750 Ohms. You can also get the device with customized impedance. Power (W) is the value of absorption of incident power. VSWR & return loss is the amount of reflection. It should be minimal. Last is package type. You will find termination using surface mount technology and with connectorized modules with multiple options for connectors like N Type, BNC, SMA, etc.

 

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