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What’s the difference between equalizers?

May 5, 2022 By Jeff Shepard

Equalizers are used to alter the performance of signal chains. In some cases, that means linearizing signal chain performance. In other cases, equalizers are used to introduce nonlinearities. As a result, equalizer designs vary widely from simple passive circuits to complex multi-stage designs and active circuits. This FAQ reviews equalizer basics, looks at equalizers for […]

Filed Under: Analog ICs, Applications, FAQ, Featured, filters, Products, Telecommunications, Wireless Tagged With: FAQ

What’s a logarithmic resistor ladder good for?

May 2, 2022 By Jeff Shepard

A logarithmic resistor ladder consists of a resistor string and switches designed to attenuate a signal. The state of the switches can be considered to represent a digital code proportional to the logarithm of the attenuation ratio. Logarithmic attenuation is useful when a large dynamic range is needed. Audio volume control and fading/balancing audio signals […]

Filed Under: 5G, Analog ICs, Applications, attenuator, FAQ, Featured, mixed-signal, Products, Resistors, Telecommunications, Wireless Tagged With: FAQ

What are reflectionless filters? Part 4: Implementations

March 18, 2022 By Bill Schweber

Standard filters reflect unwanted stopband energy, but reflectionless filters present a seamless impedance across both stopband and passband which greatly improves performance of the RF signal chain. Filters are an area of intense interest, analysis, simulation, and often physical fabrication along with tests and academic papers. Yet, for hands-on design engineers, it’s important to be […]

Filed Under: Applications, FAQ, Featured, filters, Products, Wireless Tagged With: FAQ

What are reflectionless filters, Part 3: Basic principles

March 18, 2022 By Bill Schweber

Standard filters reflect unwanted stopband energy, but reflectionless filters present a seamless impedance across both stopband and passband, which greatly improves performance of the RF signal chain. Beginning in 2011, Dr. Matthew A. Morgan of the National Radio Astronomy Observatory (NRAO) in Charlottesville, West Virginia, working with Tod A. Boyd and later with Wavley M. […]

Filed Under: Analog ICs, Applications, FAQ, Featured, Wireless Tagged With: FAQ

What are reflectionless filters? Part 2: The need

March 17, 2022 By Bill Schweber

Standard filters reflect unwanted stopband energy, but reflectionless filters present a seamless impedance across both stop band and pass band which greatly improves performance of the RF signal chain. The higher frequency world of hundreds of megahertz and into gigahertz is very different than the low-frequency world. It is a world where design tools such […]

Filed Under: Applications, FAQ, Featured, filters, Products, Wireless Tagged With: FAQ

Ka-band phased-array satellite antenna meets CS25 and CS27 needs

March 17, 2022 By Aimee Kalnoskas

ThinKom Solutions, Inc. unveiled a new Ka-band phased-array satellite antenna for communications-on-the-move (COTM) applications. The new ThinSat Ka500, based on ThinKom’s proven VICTS technology, is a “turnkey” terminal that enables the user to easily and quickly connect to the network of their choice, such as the existing and new Ka-band networks being deployed using satellites in geostationary […]

Filed Under: antennas, Applications, Products, Telecommunications, Wireless Tagged With: thinkomsolutionsinc

What are reflectionless filters? Part 1: Context

March 16, 2022 By Bill Schweber

filters

Standard filters reflect unwanted stopband energy, but reflectionless filters present a seamless impedance across both stopband and passband which greatly improves performance of the RF signal chain. Filters are an inherent, inescapable, necessary component in electrical and electronic circuits. Modern systems would be impractical and likely impossible without filters, whether at low frequencies down to […]

Filed Under: 5G, Applications, FAQ, Featured, filters, Products, Telecommunications, Wireless Tagged With: FAQ

Notch filters boast built-in ESD protection function

March 15, 2022 By Redding Traiger

TDK Corporation announces the release of its newly developed AVRF041A150MT242 and AVRF061D2R4ST532 notch filters with ESD protection function. Volume production of these devices will begin in March 2022. The new notch filters are compliant with the IEC61000-4-2 Level 4 immunity standard. They are well suited to ensuring EMC requirements are met in the audio circuits […]

Filed Under: 5G, Audio, filters, IoT, Products, Telecommunications, Tools, Wireless Tagged With: tdkcorporation

Embedded antennas handle LTE 410/ 450 MHz bands

January 18, 2022 By Redding Traiger

Antenova Ltd has revealed its latest antenna, Atta, part number SRFI079, for LTE and smart wireless deployments in the 410 MHz and 450 MHz bands. The Atta antenna is a flexible printed circuit (FPC) form and measures 101.0 x 20.0 x 0.15 mm. It is supplied with an I-PEX mating connector for direct integration to […]

Filed Under: 5G, antennas, Connectivity, Products, Tools, Wireless Tagged With: antenova

From designing to operating an RF PCB: The complete guide

December 9, 2021 By Aimee Kalnoskas

by Ken Ghadia, Sales Engineer, TechnoTronix Radio Frequency (RF) PCBs are very high-speed circuits operating at frequencies in the range of 100MHz and above, typically from 500MHz to 2 GHz. RF PCBs are the backbone of wireless networks, high-tech gadgets like smartphones, smart TVs, etc. Also, RF PCBs are used in automotive, medical equipment, military, […]

Filed Under: Applications, FAQ, Featured, PCB design, Wireless, Wireless Tagged With: FAQ

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A frequency you can count on There are few constants in life, but what few there are might include death, taxes, and a U.S. grid frequency that doesn’t vary by more than ±0.5 Hz. However, the certainty of the grid frequency is coming into question, thanks to the rising percentage of renewable energy sources that…

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