FI168P157525-T Datasheet/PDFRF Diplexers
A Diplexer is a device designed to frequency-separate two different frequency signals, allowing them to be simultaneously transmitted or received on a single device. The FI168P157525-T is a diplexer specifically designed with a prescribed frequency-dividing capability for the purpose of radio frequency (RF) communication applications.
The FI168P157525-T diplexer includes two combline filters with two azimuthally symmetrical block sections connected by a common terminal. Each of the filter sections exhibits a fixed transmission zero at its output. The output response is adjustable through variable attenuators provided between the filter banks and the common output.
Application Field
The FI168P157525-T diplexer is ideal for application in mobile radio communication systems, providing dual-frequency function with a common ground. Mobile radio communication systems include high-speed connections used in cell phones, satellite phones, public safety and military/aerospace communications. It is also used in the broadcasting and transmission of audio and video signals—such as radio and television—as well as telecommunications, base station, antenna testing and most other RF-related applications.
Working Principles
The working principle of the FI168P157525-T diplexer is based on filtering technology. Its two combline filter sections work with their respective transmission zeros and constant signal control devices to provide the desired frequency or wave-separation functions. An external resonator is used to decrease the insertion loss, while advanced circuit design techniques ensure high circuit stability, low VSWR, and low electrical loss.
When a signal enters the FI168P157525-T diplexer, it is divided into two different frequency signals by the combline filter sections, with one signal directed to each filter bank. The external resonator provides high resonance accuracy and reject frequency points, thus reducing the insertion loss of the device. The output signal is then adjusted through the variable attenuators and combined into a single output. This working principle helps to achieve higher-quality radio frequency communication, particularly in mobile radio communication systems.
Conclusion
The FI168P157525-T diplexer is a frequency-separating device with a wide range of applications in radio frequency communication systems. Its two combline filter sections and advanced circuit design techniques help to provide the desired function while reducing insertion loss and increasing the quality of the signal. It is an ideal solution for high-speed mobile radio communication, as well as other RF-related applications such as broadcasting and base station functions.