B39781B8005P810 RF/IF and RFID

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RF Diplexers

RF Diplexers are electronic components used to separate and combine frequencies simultaneously, allowing each frequency to travel in two directions while maintaining isolation between the two frequencies. An example of an RF Diplexer is the B39781B8005P810. This is a two-way, dual-channel RF Diplexer used for TDD radio systems, enabling the transmission of both up- and down-links in the 470 to 690 MHz range.

Application Field

The B39781B8005P810 is primarily used in TD-LTE networks, though it can also be used for other types 4G/LTE and 3G mobile telephone networks. This Diplexer can also be used in TV broadcast stations, radio broadcasting, Radar communications systems, satellite broadcasting and remote wireless sensing. Its incredible data rates, low losses, and strong isolation make it perfect for many applications.

Working Principle

The B39781B8005P810 uses a two-stage design with two filters. It has two independent passbands, one for the transmission of up-link signals, and the other for down-links. The up-link passband is composed of a low pass filter (LP) followed by a harmonic filter, while the down-link passband is composed of a high pass filter (HP) followed by a harmonic filter. This design ensures that both up-link and down-link frequencies are isolated from each other. In addition, the Diplexer is able to perform frequency conversion and frequency transplantation, allowing it to eliminate interference between the two signal frequencies.

By combining two separate passbands and placing harmonic filters in each channel, the B39781B8005P810 is able to provide a low-loss, high-isolation, dual-channel solution. This makes it an ideal choice for TD-LTE network applications, where the transmission of both up- and down-links requires high quality performance and low loss. Additionally, its low insertion loss and high isolation ensure that it is able to provide excellent reliability and performance.

Conclusion

The B39781B8005P810 is a two-way, dual-channel RF Diplexer designed for TDD radio systems, used especially for TD-LTE, 4G/LTE and 3G mobile telephone networks, as well as for other applications such as TV broadcast stations, radio broadcasting, Radar communications systems, satellite broadcasting, and remote wireless sensing. Its two-stage design ensures that it provides low-loss and high-isolation performance, ensuring excellent reliability and performance. This makes it an ideal choice for applications in which the transmission of both up- and down-links is required.

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