ATN3590-02

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Attenuators are electronic components used to reduce the dB (decibel) value of a signal at a specified band of frequencies. The main purposes of attenuators are to protect other sensitive components by reducing the strength of the signals, to change gain of a system by adjusting the levels of the signals and to match impedance of output to the load. The ATN3590-02 application field and working principle is a very important part in the field of attenuators.

ATN3590-02 Application Field and Working Principle

ATN3590-02 is a two-stage field effect transistor (FET) T-pad attenuator. It is a 50 Ohm, N-type, bidirectional FET attenuator that operates in the 18 GHz frequency range. It is capable of providing up to 15 dB attenuation in 0.5 dB per step (12 step) resolution. The device has low insertion loss, higher power handling and consistent attenuation over temperature.

The main application area of ATN3590-02 are cellular base station, satellite communication systems, instrumentation and broadcast radio systems. Moreover ATN3590-02 can be used in any system which requires control of the RF signal for a wide range of attenuation levels.

Typically, the ATN3590-02 works by connecting an FET between two resistors. Each resistor is connected to the 50 Ohm input port of the device and the combined resistors constitute a voltage divider. When the FET is in an off-state, it acts as an open circuit and the output receives the full 50 Ohm impedance of the input port. Here both the resistors act like a single resistor and a fixed attenuation takes place. When the FET is activated, it acts as a variable resistor, adjusting the divide ratio of the resistors.

In the case of ATN3590-02, its FETs are configured as a T-pad which helps in its wide attenuation range. The device includes a logic control connection to enable manual or digital control of the attenuation level over the attenuator\'s full range. This is achieved by adjusting the current to the gate of the FETs. ATN3590-02 can also provide voltage control of the attenuation level by varying the voltage across the gate of the FETs.

Overall, ATN3590-02 is a versatile device, which performs in the 18 GHz frequency range with 15 dB of attenuation and 0.5 dB per step of resolution. It has a high power handling and has low insertion loss over a broad range of temperatures and frequencies. This makes it a suitable choice for different wireless applications.

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