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January 2012
Unlocking the Potential of RF MEMS with New Design Approaches
By Dr. Stephen Breit, Vice President of Engineering, Coventor At the recent Consumer Electronics Show (CES), a major trend in many of the whizzy new gadgets that were on display was the enhanced interactivity and environmental sensing capabilities of products, from smart phones to games to the burgeoning tablet market.
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July 2011
Three Terminal Filter Capacitors Simplify Designs, Reduce Component Counts
By Ron Demcko Application Engineering Manager at AVX Corp It is worthwhile to take some time and look at the role a three terminal FeedThru capacitor filter can play in today’s designs. Three terminal capacitors are now broadly accepted in designs ranging from satellites to cell phones, automobiles to SMART grid controllers.
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April 2011
Emerging Switch Developments for Embedded WLAN Solutions in Smart Phones
By Kevin Walsh, Skyworks Solutions, Inc.
This article will elaborate on two key trends that are facilitating the growth of embedded WLAN communications in smart phones and other mobile connected devices:
1.
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February 2011
Bluetooth Low Energy Creates New Testing Requirements
By Angus Robinson, Anritsu Company
By eliminating wires and simplifying connections between devices, Bluetooth wireless technology influences people’s lives in many ways. Mobile phones, PCs, motor vehicles and portable music players now have the ability to be connected quickly and easily whenever we want.
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Integrated Load Switches
An Easy and Fast Solution to Simplify Subsystem Load Management in Wireless Applications
By Philippe Pichot, Systems Engineering Manager, Texas Instruments
Integrated power switches are increasingly being used in battery-powered systems to disconnect any unused subsystem.
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August 2010
SAWLESS RF Transceiver Technology Meets the Multiband, Multimode Requirements for 4G/3G/2G
By Vivek Bhan, Fujitsu Semiconductor
By the end of this year, enhanced products that utilize the Long-Term Evolution (LTE) standard will become available, providing broadband speeds to the handset and enabling the use of Internet services outdoors that are equivalent to indoor broadband services.
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June 2010
Successful Design Strategies for Embedded Antennas
By Pertti Visuri, Ph.D., Airgain Inc.
Consumer demand for internet and video content throughout the home has expanded the market for in-home wireless networking devices. A new generation of wirelessly enabled products is emerging.
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February 2010
Battery Holders that Take a Battering
A challenging economic environment has done little to dampen the high-growth market for wireless devices, as new applications continually emerge to provide a dynamic platform for technological innovation.
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December 2009
Eye on Vector Network Analyzers
Vector Network Analyzers (VNAs) are very powerful and flexible measuring instruments. Their basic capability is to measure the S-parameters of an RF or microwave device and display the result in the frequency domain.
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October 2009
Thin Film Filter Design and Technology
When specifying filter for a design, the admissible insertion loss and frequency range in the pass-band, the required attenuation and frequency ranges in the forbidden-bands, are the most important characteristics of filters.
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August 2009
Navigating the Topology and Architecture of an RF Switch
RF switches are used in many different ways in portable and infrastructure applications. Most often they are used to connect an antenna alternately to a transmitter and a receiver.
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June 2009
Improving Radio Performance in Wireless Applications Using Slot Antennas
The explosion of wireless technologies has spurred the improvement of most of the analog radio components from baluns to power amplifiers. Antennas are also part of the improvement of the radio portion of any system.
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May 2009
Choosing the Best Capacitor for Wireless Devices and Charger Control Circuits
For small portable wireless devices size is the predominant factor in selecting the capacitor, although the DC leakage and/or ESR are critical electrical parameters which must not be overlooked.
By Pat Gormally, Vishay Intertechnology
click to enlarge
Figure 1.
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March 2009
Selecting the Right Filter for Wireless Handset Applications
In every wireless handset you will find numerous filters and/or duplexers present in the RF front end. Filters fall into four general categories: band-pass, band-reject, high pass, and low pass.
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February 2009
How to Specify a Switch for Portable Medical Equipment
The two major design considerations when specifying switches are size and reliability. Even the smallest components used in medical field equipment are susceptible to contaminants and the effects of harsh environments, affecting component reliability.
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Specifying Directional Couplers for Critical Applications
Over the years many different techniques have been utilized to bring about the physical realization of directional couplers.
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January 2009
Sorting Out New RF Signal Generator Capabilities
There are many different kinds of RF signal generators from which to choose. No single generator fits all user requirements. This article is a guide to help you select the best RF signal generator for your needs, and it focuses on selecting signal generators commonly used for today's commercial wireless communications systems.
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December 2008
Adding Wireless to a Microcontroller-Based Design: 5 Questions to Answer
Wireless is fast becoming a feature of choice for many products. The ability to cut the wires and mobilize a device is a compelling feature to microcontroller users.
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September 2008
Selecting the Right Mixer for your Application
In spite of advances in digital processing components enabling direct digital conversion at higher frequencies, heterodyne architectures are still often required to meet stringent spur performance and tight blocking specs, or coverage over broad frequency ranges.
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