SKY65343-11 RF/IF and RFID

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RF Front End (LNA + PA) plays an important role in the transmission of radio signals. This article will introduce SKY65343-11, which is a kind of RF Front End (LNA+PA) produced by Skyworks Solutions, Inc. We will discuss its application field and working principle.

Application Field

SKY65343-11 is designed for cellular base-station applications. It features full independent control of three gain stages to provide flexibility for 3G/4G implementation. This device is a highly integrated front-end solution with low noise amplifier, power amplifier, duplexer, band-pass filter and discrete components which can be combined to realize superior performance.

The SKY65343-11 offers high linearity and low noise to ensure ideal cellular coverage in 3G/4G spectrum. It is suitable for public and private LTE, CDMA, UMTS, WCDMA, GSM and other wireless communications. Maximum 3rd Order Input-Referd Intercept Point is +29dBm while noise figure is 2.5dB at 5GHz. Additionally, its design with multiple integrated components can help reduce system bill of material cost while providing excellent overall performance.

Working Principle

SKY65343-11 consists of a low-noise amplifier, power amplifier, duplexer, band-pass filter and discrete components which is mainly used for cellular base station applications. The gain control of the device is based on two inputs. One is signal input and the other is power control input. The following is the working process of this device.

Firstly, the signal from antenna is connected to the low-noise amplifier. The LNA amplifies the signal and passes it on to the power amplifier. Power amplifier keeps its gain to a certain level and amplifies the signal. Both the low noise amplifier and power amplifier are controllable by the power control input, so their gains can be adjusted accordingly.After being amplified by the low noise amplifier and power amplifier, the signal passes through the duplexer and then through the band-pass filter before reaching out the signal output. The duplexer filters out the undesired frequencies to ensure that the signal is passed at the desired frequency. The band-pass filter passes the desired frequencies and blocks the others. This is to ensure that the signal that is received by the system is free from any interference and noise. Lastly, the gain of SKY65343-11 is adjustable by the power control input, which can be configured according to the system requirements. This helps to maintain optimal performance of the system.

Conclusion

SKY65343-11 is a RF Front End (LNA+PA) device produced by Skyworks Solutions, Inc. It is suitable for 3G/4G cellular base-station applications. SKY65343-11 consists of a low noise amplifier, power amplifier, duplexer, band-pass filter and discrete components, which works together to provide superior performance. It offers high linearity and low noise, and can be adjusted by the power control input to optimize the system performance.

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