SKY13369-365LF

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RF switches serve a variety of functions in radio communications systems, from channel selection to routing. The SKY13369-365LF is a low noise and low insertion-loss RF switch designed to meet the requirements of cellular infrastructure. This white paper covers the application field and working principle of the device.

Application Field

The SKY13369-365LF is designed for use in cellular infrastructure, including base transceiver stations (BTSs), remote radio heads (RRHs) and repeaters. The components can be used individually, or can be combined to form multiplexer and switch matrices. In a BTS, for example, a single SKY13369-365LF can be used to switch between multiple frequency bands, while a multiplexer/switch matrix can be used to switch between different radio paths.

The component has also been designed for use in other applications such as radar systems and automated test equipment. Its combination of low noise, low insertion-loss and small size make it suitable for a wide range of applications.

Working Principle

The SKY13369-365LF is an RF PIN diode switch consisting of a number of GaAs PIN diode chips. Each chip consists of two electrodes (an emitter and a collector) connected to a composite PIN diode. When a forward bias voltage is applied to the emitter and collector electrodes, current passes through the diode, allowing the signal to flow through the switch. When the voltage is reversed, the current stops flowing and the switch is turned off. The on/off switching is done electronically through circuit control.

The SKY13369-365LF is designed to operate over a range of frequencies from 0.5GHz to 6GHz, with on/off ratios of 20dB typically. Its Insertion Loss1 is very low, typically 0.3dB, and its Switching Speed2 is fast, typically 1-2ms. The low Insertion Loss and fast Switching Speed makes the component ideal for use in cellular infrastructure.

Conclusion

The SKY13369-365LF is a low-noise, low-Insertion Loss RF switch designed for use in cellular infrastructure. It can be used individually or can be combined to form multiplexer and switch matrices. Its combination of low noise, low insertion-loss and small size make it suitable for a wide range of applications.

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