HMC973LP3ETR RF/IF and RFID

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Introduction to Attenuators

Attenuators are devices designed to reduce the power of a signal without distorting its waveform. Common forms of attenuators include resistors, capacitors, and inductors. They are most commonly employed as part of a signal chain, providing a level of control over the signal’s amplitude, frequency, and variation.

A variety of attenuator types and designs exist. Each type is characterized by its working principle, frequency range and attenuation rates. In this article, we focus on the HMC973LP3ETR application field and working principle.

HMC973LP3ETR application field and working principle

The HMC973LP3ETR is a voltage-variable, high-performance analog attenuator designed for use in RF and microwave applications that require excellent repeatability and reproducibility. The device is ideal for applications such as RF gain and loss control, automatic gain control (AGC), gain flattening, or any other application where precise attenuation control is required.

The HMC973LP3ETR attenuator utilizes patented GaAs MMIC technology to provide a maximum of 31 dB attenuation in nine steps of 3 dB, 5 dB, and 10 dB. The device operates over a frequency range of 800 MHz to 8 GHz and can handle up to 20 Watts of power at 20 dBm (100 mW).

The HMC973LP3ETR uses a voltage-variable topology that is analogous to a FET source follower, where the gate voltage of the FET is connected to a voltage source input. When a given voltage is applied to the input of the attenuator, the attenuator circuit will produce an output signal with a relative attenuation value that corresponds to the voltage applied. The result is a highly linear, repeatable, and low-noise attenuator with excellent stability.

The HMC973LP3ETR has excellent repeatability and reproducibility. This ensures the integrity of the signal as it passes through the attenuator and creates highly reliable RF systems that can be trusted to provide exceptional performance. In addition, the device has a wide dynamic range, making it suitable for a wide range of applications.

Conclusion

The HMC973LP3ETR is an ideal choice for applications that require precise attenuation control over a wide frequency range. The device utilizes patented GaAs MMIC technology to provide an excellent level of repeatability, reproducibility, and linearity. The device’s wide dynamic range and ability to handle up to 20 Watts of power make it suitable for a variety of applications. In summary, the HMC973LP3ETR is an excellent choice for applications that require precise RF attenuation control.

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