Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Mounting Type:	Surface Mount
Package / Case:	Monoblock, 3 PC Pad

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RF Diplexers: CER0126A Application Field and Working Principle

The CER0126A series of RF diplexers is a highly reliable and cost-effective solution for most wireless applications requiring a low-impedance, high-performance diplexer. It is used in a wide variety of wireless applications, including RF broadcast, cellular base stations, Wi-Fi networks, microwave links, base station repeaters, microwave interconnects, cordless phones, and satellite receivers. The CER0126A diplexer is designed to provide exceptional broadband isolation and low insertion loss, while minimizing impedance variations with frequency.

What is a Diplexer?

A RF diplexer is a two-port filter that routes signals of two different frequencies to either one port or the other, while isolating the signals from each other. Signals from one frequency are sent to one port, while signals from the other frequency are sent to the other port. This allows for a single antenna to be used to transmit and receive signals of two different frequencies. Diplexers are also known as duplexers or waveselective filters.

CER0126A Features and Specifications

The CER0126A diplexer is an ideal solution for a variety of applications requiring broadband isolation between two frequency bands. It features an operating temperature range from -40°C to +85°C, with excellent insertion loss and high isolation between frequencies. It has a peak insertion loss of 0.3 dB, VSWR of 1.3:1 and isolation of 35 dB. It also offers high impedance stability over temperature and humidity ranges, with a range of up to 5 Ω.

CER0126A Working Principle

The CER0126A diplexer operates on the principle of resonant circuits, which transfer power between two different frequency bands. The diplexer consists of two resonating cavities, one for the low-frequency band (LF) and one for the high-frequency band (HF). The two resonating cavities are coupled through a waveguide that is designed to introduce minimal losses to the signals.The resonating cavities are tuned to the two desired frequency bands by controlling the size of the cavity and the choice of dielectric material used in the walls of the cavity. The size of the cavities and the corresponding resonating frequencies are determined by the cavity’s impedance, which can be tuned to achieve the desired frequency bands.When a signal in either frequency band is applied to one of the resonating cavities, it resonates within the cavity and is transferred to the other cavity. The signals are completely isolated from each other, as the cavities are not directly connected. This allows the diplexer to route signals of two different frequencies to either one port or the other, while maintaining high isolation.

Conclusion

The CER0126A RF diplexer is a highly reliable and cost-effective solution for most wireless applications requiring a low-impedance, high-performance diplexer. It is designed to provide exceptional broadband isolation and low insertion loss. The CER0126A operates on the principle of resonant circuits and is tuned to two desired frequency bands by controlling the size of the cavity and the choice of dielectric material used in the walls. The CER0126A diplexer is used in a wide variety of wireless applications, including RF broadcast, cellular base stations, Wi-Fi networks, microwave links, base station repeaters, microwave interconnects, cordless phones, and satellite receivers.

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