The low-power QFP4526 and high-power QFP4568 bring switches, filters, and amplifiers to Wi-Fi 8 (802.11ax) designs. Wi-Fi 6 (IEEE 802.11ax) access points, routers, gateways, customer-premise devices, and IoT devices need amplifiers to boost signal power to its final levels. The QFP4526 and QFP4568 front-end modules from Qorvo operate at 3.7 V and 5 V power…
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Fundamentals of fast chargers for phones and notebook PCs
Overlapping protocols and competing standards have created a confusing landscape for USB chargers. Here are the important differences and similarities of most interest to designers. Masashi Nogawa, Staff Systems Engineer Qorvo The first standard for charging via USB connections allowed power delivery at a 7.5-W maximum. Recently the USB standard jumped up to support 100 […]
Power transistors drive 5G cells
The single QPD0005 and dual QPD0405 power transistors from Qorvo provide the power needed to drive cellular antennas.
Amplifier targets cellular Band 66
The QPA9901 amplifier from Qorvo provides a typical gain of 36.5 dB covering 2110 MHz to 2200 MHz.
The difference between active and passive antenna systems
5G networks demand new antenna designs to deliver faster speeds for sub-6 GHz and millimeter wave (mmWave) communications. These new antenna technologies, however, often create a tech jargon that can potentially confuse readers. Let’s set the record straight in terms of who is who in the 5G antenna designs. It starts with the difference between…
Spectrum co-existence challenges in the fully connected car
High-performance RF bandpass filters may hold the key to autonomous vehicle communication without interference. Ali Bawangaonwala | Qorvo, Inc. Continuing advances in technology are making the autonomous vehicle a practical reality, and there is frequent discussion among technologists about Wi-Fi and 5G as enablers of the connected car. Equally important, but less talked about, are […]
IoT standards: The End Game
by Cees Links, Qorvo Quite regularly I get the question: with all these standards around, what should I choose? Zigbee, Thread, Bluetooth Mesh, or Wi-Fi? Or maybe LoRa? Or is it better to wait for 5G and NB-IoT? Of course, these questions create confusion and slow down the adoption of the Internet of Things (IoT). […]
Filters, Part 2: SAW and BAW devices for RF
Part 1 of this FAQ looked at the basic available electronic filters – analog, switched capacitor, and digital – and briefly reviewed the attributes of each. As the frequencies to be filtered reach to 1 GHz and well beyond, while the selectively needed also became narrower, these filter approaches can no longer support many of […]
Filters, Part 1: Analog, switched, and digital filters
Filters are essential functions in most circuits and systems; as frequencies extend into the multi-GHz range, surface acoustic wave (SAW) and bulk acoustic wave (BAW) filters are needed to meet the design objectives. An engineer I worked with (and whose name I have forgotten) once remarked to about electronic filters (and he was serious): “like […]
GaN Front End Module mitigates 5G expansion costs
Qorvo has expanded its offering for 5G applications with the industry’s first 28 GHz Gallium Nitride (GaN) front-end module (FEM). This new FEM reduces overall system costs for base station equipment manufacturers as they expand into 5G. According to SNS Telecom & IT, the 28 GHz frequency band is widely preferred for early 5G-based fixed […]
