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Majeed Ahmad

Majeed Ahmad has been a technology and trade journalist for more than 15 years. He is the former Editor-in-Chief of EE Times Asia, a sister publication of EE Times. For EE Times Asia, a semiconductors design publication, he also wrote the “Net Effect” column, which covered convergence among various facets of the electronics world. Also, as Editor-in-Chief at Global Sources, a Hong Kong-based business-to-business publishing house, he spearheaded magazines relating to electronic components, consumer electronics, computers, security and telecommunications.

Majeed has a study background in electronics and telecommunications. Prior to joining the publishing industry in 1996, he has worked with blue-chip companies like AT&T, Alcatel and Motorola. You can follow him on Twitter at twitter.com/majeedkamran.

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    The incredibly shrinking world of vehicle radar design

    By Majeed Ahmad | April 26, 2017

    The Insurance Institute for Highway Safety claims that one in three fatal car crashes can be mitigated if vehicles are equipped with collision avoidance systems. But the ultrasonic radars used for offering emergency braking and other ADAS features are found mostly in high-end vehicles.

    Moreover, a radar sensor carrying out four essential functions—generate, transmit, receive, and digitize radar signals—generally has three to four SiGe chips and that leads to the creation of a bulky device.

    Battery and charger solutions move e-bike into a new gear

    By Majeed Ahmad | March 27, 2017

    The e-bike battery systems benefit from both travel charger and home charger. Image courtesy of Intersil

    Europe’s enthusiasm for the clean environment and energy efficiency apparently makes the electric bicycles or e-bikes a poster child of the shift from mechanical to electronic control systems. However, what’s new in the e-bike story is that China is now only issuing new licenses for e-bikes while putting an end to the permits for gas-powered bicycles.

    Bluetooth low energy: Control LED color and brightness with a smartphone

    By Majeed Ahmad | March 27, 2017

    Bluetooth mesh networking and beacon functionality are now allowing smart lighting startups like PURillume to simplify installation complexity, reduce energy consumption, and automate lighting controls merely by using a smartphone or a tablet.

    PURillume’s LED lamps for hospitality and residential markets can be color tuned wirelessly using Bluetooth low energy (BLE) encrypted connections from a master lamp, smartphone or tablet.

    GaN transistors to demo power efficiency at APEC 2107 show in Florida

    By Majeed Ahmad | March 21, 2017

    photo_of_gaN_module

    TI’s GaN-based LMG5200 module for 48V-to-POL applications in datacenters (shown on top) uses eGaN power FETs from EPC.

    Gallium nitride (GaN) chips are going to have a show of power — and how they can boost power density and energy efficiency — at the Applied Power Electronics Conference (APEC) being held on 26-30 March 2017 in Tampa, Florida.

    Texas Instruments will showcase how its GaN-based 48 to POL half-bridge controllers can facilitate greater energy efficiency at the AC-to-processor stage.

    CCS: A unified EV charging standard in the making

    By Majeed Ahmad | March 13, 2017

    Charging circuits

    The CCS infrastructure supports up to 100 kW of energy delivery while using HomePlug Green PHY links for communication and monitoring. Image courtesy of Phoenix Contact

    Electric cars, as Mercedes-Benz chief Dieter Zetsche puts it, need both convincing vehicles and a comprehensive charging infrastructure. Eventually, a robust charging network is taking shape in 2017 in order to galvanize the mass consumer adoption of electric vehicles (EVs).

    Revisiting motor control in electric and hybrid vehicles

    By Majeed Ahmad | February 24, 2017

    The dedicated motor control circuit in Renesas’ automotive MCUs is aiming to create energy efficiency by offloading static processing operations from the CPU.

    The fuel efficiency demands are pushing carmakers to produce more electric, hybrid, and plug-in hybrid electric vehicles (PHEVs). That, among other things, will require a major design overhaul of vehicle’s electronic building blocks such as ECUs and MCUs.

    Smart lighting and the makeover of LED driver ICs

    By Majeed Ahmad | February 7, 2017

    LED driver ICs such as Fairchild’s FL77944 accommodate higher wattage systems like street lights using parallel connections with LEDs.

    American Airlines Center near the Dallas downtown recently replaced the high-pressure sodium and metal halide light fixtures with LED luminaires in its parking garages. And that has allowed the sports and entertainment arena to reduce an estimated 60 percent energy consumption and $1.26 million in total lifetime savings in parking garage lighting.

    Time to revisit power consumption in home appliances

    By Majeed Ahmad | January 19, 2017

    A single-package solution simplifies inverter design and lowers power consumption. Image courtesy of Rohm Semiconductor

    The notion of smart home has been making headlines for many years, but it’s actually the energy efficiency part where homes are making the most tangible gains through what designers call inverterization of appliance designs.

    Take the case of home appliances like air conditioners and ceiling fans.