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Coaxial Circulator
Coaxial circulator is a passive device used in the RF and microwave frequency bands, often used in isolation, directional control, and signal transmission applications. It has the characteristics of low insertion loss, high isolation, and wide frequency band, and is widely used in communication, radar, antenna and other systems.
The basic structure of a coaxial circulator consists of a coaxial connector, a cavity, an inner conductor, a ferrite rotating magnet, and magnetic materials.
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Drop in Circulator
RF embedded circulator is a type of RF device that enables unidirectional transmission of electromagnetic waves, mainly used in radar and microwave multi-channel communication systems. The embedded isolator is connected to the instrument equipment through a ribbon circuit.
The RF embedded circulator belongs to a 3-port microwave device used to control the direction and transmission of signals in RF circuits. The RF embedded circulator is unidirectional, allowing energy to be transmitted clockwise from each port to the next port. These RF circulators have an isolation degree of about 20dB.
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Broadband Circulator
Broadband Circulator is an important component in RF communication systems, providing a series of advantages that make it very suitable for various applications. These Circulators provide broadband coverage, ensuring effective performance over a wide frequency range. With their ability to isolate signals, they can prevent interference from out of band signals and maintain the integrity of in band signals.
One of the main advantages of broadband circulators is their excellent high isolation performance. At the same time, these ring-shaped devices have good port standing wave characteristics, reducing reflected signals and maintaining stable signal transmission.
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Dual Junction Circulator
Double junction Circulator is a passive device commonly used in the microwave and millimeter wave frequency bands. It can be divided into dual junction coaxial circulators and dual junction embedded circulators. It can also be divided into four port double junction circulators and three port double junction circulators based on the number of ports. It is composed of a combination of two annular structures. Its insertion loss and isolation are usually twice that of a single Circulator. If the isolation degree of a single Circulator is 20dB, the isolation degree of a double junction Circulator can often reach 40dB. However, there is not much change in the port standing wave.
Coaxial product connectors are generally SMA, N, 2.92, L29, or DIN types. Embedded products are connected using ribbon cables.
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SMD Circulator
SMD surface mount Circulator is a type of ring-shaped device used for packaging and installation on a PCB (printed circuit board). They are widely used in communication systems, microwave equipment, radio equipment, and other fields. The SMD surface mount Circulator has the characteristics of being compact, lightweight, and easy to install, making it suitable for high-density integrated circuit applications. The following will provide a detailed introduction to the characteristics and applications of SMD surface mount Circulators.
Firstly, the SMD surface mount Circulator has a wide range of frequency band coverage capabilities. They typically cover a wide frequency range, such as 400MHz-18GHz, to meet the frequency requirements of different applications. This extensive frequency band coverage capability enables SMD surface mount Circulators to perform excellently in multiple application scenarios.
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Microstrip Circulator
Microstrip Circulator is a commonly used RF microwave device used for signal transmission and isolation in circuits. It uses thin film technology to create a circuit on top of a rotating magnetic ferrite, and then adds a magnetic field to achieve it. The installation of microstrip annular devices generally adopts the method of manual soldering or gold wire bonding with copper strips.
The structure of microstrip circulators is very simple, compared to coaxial and embedded circulators. The most obvious difference is that there is no cavity, and the conductor of the microstrip Circulator is made by using a thin film process (vacuum sputtering) to create the designed pattern on the rotary ferrite. After electroplating, the produced conductor is attached to the rotary ferrite substrate. Attach a layer of insulating medium on top of the graph, and fix a magnetic field on the medium. With such a simple structure, a microstrip circulator has been fabricated.
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Waveguide Circulator
Waveguide Circulator is a passive device used in the RF and microwave frequency bands to achieve unidirectional transmission and isolation of signals. It has the characteristics of low insertion loss, high isolation, and broadband, and is widely used in communication, radar, antenna and other systems.
The basic structure of a waveguide Circulator includes waveguide transmission lines and magnetic materials. A waveguide transmission line is a hollow metal pipeline through which signals are transmitted. Magnetic materials are usually ferrite materials placed at specific locations in waveguide transmission lines to achieve signal isolation.
