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Ultimate guide to choosing an RF power amplifier

Last Modified: July 31, 2022 by Rajiv 2 Comments

rf-power-amplifier
Power amplifiers are significant equipment in every RF communication systems. Similar to other amplifiers, RF amplifiers are also used to provide amplification to the signals supplied to its input. In modern wireless communication systems, the signals are complex due to complex modulation schemes. Amplifier selection is a challenging task for engineers due to many of its important characteristics and specifications.
Here let’s take a look on the most important specifications and how to choose a suitable RF amplifier for your next application.

[Read more…] about Ultimate guide to choosing an RF power amplifier

Filed Under: RF equipment, RF networks, RF testing

How to test an RF Isolator and Circulator

Last Modified: April 15, 2017 by Rajiv Leave a Comment

rf-isolatorRF isolators and circulators play an important role in many RF communication systems. Electrical behaviour of each individual unit contributes to overall system performances. Engineers often monitor and test each component during troubleshooting of an RF system.

RF Isolators: are two port passive devices used in RF and communication networks to allow transmission in one direction and give maximum signal isolation in opposite direction.

[Read more…] about How to test an RF Isolator and Circulator

Filed Under: RF networks, RF testing

S-parameter formats in vector network analyzers

Last Modified: October 2, 2017 by Rajiv 1 Comment

What are S-parameters?
vector network analyzer
 
S-parameters are the electrical characteristics of a signal in a complex network. It is also known as scattering parameters and mostly used in RF network and applications. Vector Network Analyzer is used to measure and analyze signal behavior of S-parameters. The signal behavior can be observed as gain, return loss, VSWR, reflection coefficient and group delay etc.

[Read more…] about S-parameter formats in vector network analyzers

Filed Under: RF basics, RF networks, RF testing

RF Attenuators – How to choose a proper one?

Last Modified: July 31, 2022 by Rajiv Leave a Comment

rf-attenuator
RF attenuators are one of the most significant components in any RF and microwave systems. What are RF attenuators and what is the purpose of it? Here I would like to share about the basic construction, types, use and what are the important factors to choose a proper attenuator for your next RF application.

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Filed Under: RF networks, RF testing

What is Impedance matching

Last Modified: July 31, 2022 by Rajiv Leave a Comment

thinking_smithImpedance matching 
In electrical engineering, impedance is the ratio of voltage to current with the consideration of phase angle.  According to Ohm’s law V= IR, where V – voltage, I is the current and R is the resistance of the network.  In RF, the idea of impedance matching is to equalizing the source and load impedance for maximum power transfer. Impedance is represented as Z and is complex than just the resistance of the network. In simple explanation, impedance matching is to making source and load impedance as similar as possible in order to minimize losses.

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Filed Under: RF basics, RF testing

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