SGA-3586

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Frequency:	0Hz ~ 5GHz
P1dB:	12.5dBm
Gain:	18dB ~ 22dB
Noise Figure:	3.5dB
RF Type:	Cellular, GSM, PCS, UMTS
Voltage - Supply:	3 V ~ 3.5 V
Current - Supply:	31mA ~ 39mA
Test Frequency:	1.95GHz
Package / Case:	SOT-86
Supplier Device Package:	SOT-86

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RF Amplifiers

An RF amplifier is an electronic amplifier specifically designed to amplify relatively weak signals in the radio frequency (RF) spectrum. Typical RF power amplifiers are designed to occupy a wide range of operating frequency bands, from ultra-low frequencies up to microwave frequencies. Among many popular RF amplifiers is the SGA-3586 model. This article discusses the application field and working principle of the SGA-3586.

Application Field

The SGA-3586 amplifier is designed for use in a wide variety of applications. It is well suited for low-power wireless communication applications such as cordless phones, wireless local area networks (WLANs), cellular phones, and short-range radio systems. It can also be used in instrumentation, medical equipment, and positioning systems applications.

Working Principle

The SGA-3586 amplifier follows the basic principles of RF amplification. In order to amplify a signal, it uses a pass transistor which acts as an impedance matching device between the source andload. The pass transistor is connected to two bias sources. One of these is the gate bias and the other is the emitter bias. By controlling the gate and emitter sources, the impedance of the pass transistor can be adjusted, which in turn, determines the power transfer and amplification of the RF signal.In order to maximize its performance, the SGA-3586 has a built-in temperature compensation circuit. This circuit monitors the temperature and adjusts the bias currents to keep the device in a constant and optimum operating condition.

Power Output

The SGA-3586 amplifier is capable of delivering an output power of up to 5 watts, depending on the input signal level and the ambient temperature. That said, the amplifier\'s efficiency is quite high. At the maximum output power level, it has an efficiency of up to 94%, allowing for a low current draw.

Input Characteristics

The SGA-3586 amplifier has an input impedance of 50 ohms and a voltage standing wave ratio (VSWR) of less than 1.5:1. It also includes two-stage input tuning which allows for a wide input matching range and improved signal-to-noise ratio.

Conclusion

The SGA-3586 is a powerful and versatile amplifier that is well suited for many different wireless communication applications. It has a high efficiency, wide input matching range, and it can deliver up to 5 watts of output power. Its temperature compensating circuit ensures optimal performance in a wider temperature range.

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