What is meant by fixed attenuator?

fixed attenuator. A device used to reduce power levels of a signal by a fixed amount with little or no reflections. The output signal is attenuated relative to the input signal while the input and output impedance is maintained close to 50 ohms (or 75 ohms) over the specified bandwidth.

What is precision attenuator?

Page 1. DiCon’s Precision Variable Attenuator is a TTL-driven component which sets attenuation levels in the 0 to 30 dB range with superior repeatability and absolute accuracy. The attenuation level is set using a high-precision motor with either the I2C standard interface or a proprietary Step-Up/Step-Down interface.

What is a variable attenuator used for?

An attenuator for reducing the strength of an alternating-current signal either continuously or in steps, without causing appreciable signal distortion, by maintaining a substantially constant impedance match.

What are step attenuators?

A type of variable attenuation device using a switch with two or more (sometimes many more) contact positions, each with different amounts of resistance applied. Instead there are several “detents,” which are the different position of the switch making contact.

What is meant by flap attenuator?

[¦flap ə′ten·yə‚wād·ər] (electromagnetism) A waveguide attenuator in which a contoured sheet of dissipative material is moved into the guide through a nonradiating slot to provide a desired amount of power absorption. Also known as vane attenuator.

What are different types of attenuators?

Types of Attenuator

Fixed Type. In Fixed type attenuators the resistor network is locked at a predetermined attenuation value.
Step Type. These attenuators are similar to fixed attenuators.
Continuously Variable Type.
Programmable Type.
DC Bias Type.
DC Blocking Type.
Optical Attenuators.

Why attenuator is used in microwave?

Attenuator is passive elements those are used to control the amount of microwave power transferred from one point to another on a microwave transmission line.

How does attenuator differ from isolator?

Overview: This paper briefly describes the attenuators and isolators difference. Attenuator is used to signal attenuation, and isolation is mainly used to physically separate input and output ends. Isolator is the role of the physical input and output ends of isolated.

What is digital attenuator?

A digital attenuator, unlike variable attenuators, switches in discrete and finite attenuation states. Digital attenuators employ semiconductor devices to achieve each attenuation step. Some of the semiconductor devices employed for this purpose include: PIN diodes, MOSFETs, and GaAs MESFET.

What is waveguide attenuator?

A waveguide attenuator is an RF device specifically designed to reduce the power of a signal without affecting or reducing the waveform of the signal. A waveguide attenuator works exactly opposite of an amplifier which increases the power of the signal without altering the waveform.