Rohde & Schwarz Unveils Innovative Solution for Testing Far-Field Wireless Power Systems at IEEE WPTCE Conference

Rohde & Schwarz recently introduced a groundbreaking proof of concept for testing far-field wireless power systems during the IEEE Wireless Power Technology Conference and Expo (WPTCE) held in Kyoto, Japan. The company’s wireless power tester leverages their advanced test and measurement equipment, integrated with off-the-shelf wireless charging development kits. This solution also incorporates test automation capabilities and an intuitive web interface, supporting the AirFuel Alliance RF standard for wireless charging.

With the rapid increase in connected devices, expected to reach nearly 29 billion by 2030 according to Statista, finding new ways to power these devices is essential. Conventional power solutions, such as manual charging, battery replacements, or using wireless charging pads, are becoming less practical and more expensive to maintain. RF (radio frequency) technology presents an innovative alternative, as it allows devices to be wirelessly powered by converting RF signals into direct current (DC).

At the WPTCE conference, Rohde & Schwarz showcased their wireless power tester (WPT) system, which aims to accelerate the development and testing of RF-based wireless charging solutions.

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How RF Wireless Power Works: Power Without Cables

RF wireless power technology enables the transmission of energy without direct contact, providing a seamless power supply to multiple devices at varying distances from the power source. This eliminates the need for traditional batteries or cables, simplifying maintenance efforts. One of the most promising applications is for low-power Internet of Things (IoT) devices used in smart buildings, smart cars, and other connected environments.

In such scenarios, sensors and devices can receive power without requiring manual charging or battery replacements. This not only improves efficiency but also offers environmental benefits. Batteries involve energy-intensive manufacturing processes and contain harmful chemicals that could leak into water supplies. RF wireless power enables the deployment of battery-free devices, helping reduce environmental waste and mitigating the ecological impact of battery production and disposal.

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The Role of Rohde & Schwarz in RF Wireless Charging Development

Rohde & Schwarz, a global leader in test and measurement solutions, is actively contributing to the development of industry standards for RF wireless power. The company is a key member of the AirFuel Alliance, a collaborative group working to establish standardized RF wireless charging technologies under the AirFuel RF™ framework.

Through this partnership, Rohde & Schwarz aims to provide end-to-end testing solutions for both wireless power transmitters and receivers. Their expertise in testing and measurement ensures that devices and systems will conform to the AirFuel Alliance’s RF standards, helping to build a more unified and reliable wireless power ecosystem.

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Advanced Testing Setup: A Glimpse Into the WPT System

The wireless power tester (WPT) from Rohde & Schwarz supports the AirFuel Alliance’s RF Conformance Test Specification. The setup integrates a variety of their high-performance testing instruments, including:

• R&S SMB100B RF and Microwave Signal Generator: Generates precise RF signals.
• R&S FSV3000 Signal and Spectrum Analyzer: Measures the quality and behavior of transmitted RF signals.
• R&S NGU Source Measure Unit (SMU): Acts as a battery emulator, simulating various power scenarios.
• Two R&S HMC8012 Digital Multimeters: Measure voltage and current with high precision.

These instruments work together under an automated testing environment that can be managed through a user-friendly web interface, enabling seamless control and faster testing processes.

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Driving Adoption of RF Wireless Power Technology

According to Dr.-Ing. Rania Morsi, head of the WPT project at Rohde & Schwarz, the surge in connected IoT devices requires a shift toward more sustainable power solutions. She emphasizes that powering low-energy devices wirelessly without human intervention can reduce maintenance burdens and ensure devices remain operational, even while in motion.

“Today, we have over 15 billion IoT devices, and we still rely on manual methods to power them. RF wireless power offers a practical, maintenance-free solution that delivers energy on demand, no matter where the devices are or how they are used,” Dr. Morsi explained. “Our wireless power testing solution ensures that companies can reliably develop products aligned with the AirFuel RF standard. We believe this technology will significantly accelerate the adoption of wireless RF power solutions.”

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The AirFuel Alliance Collaboration and Industry Impact

Rohde & Schwarz’s collaboration with the AirFuel Alliance is helping to advance the RF wireless charging industry. Dr. Sanjay Gupta, President and Chairman of AirFuel Alliance, expressed his appreciation for Rohde & Schwarz’s leadership in developing the wireless power tester.

“The WPT system plays a critical role in validating and testing conformance with the AirFuel RF standard,” Dr. Gupta said. “This innovation will empower companies to bring interoperable RF wireless power solutions to the market faster, ensuring consistency across devices.”

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What’s Next for RF Wireless Power Technology?

As the demand for connected devices grows, RF wireless power technology is poised to become a game-changer. By eliminating the need for frequent recharging or battery swaps, it offers a more sustainable and efficient solution for powering the ever-expanding ecosystem of IoT devices. The work of Rohde & Schwarz, in partnership with the AirFuel Alliance, will play a crucial role in setting the standards and benchmarks needed for this technology to thrive.

With the successful deployment of their wireless power tester system, Rohde & Schwarz is positioned to drive the future of RF wireless power, ensuring that the technology meets both industry standards and consumer expectations.

For more information about Rohde & Schwarz’s work in RF wireless power, visit their official site: Rohde & Schwarz.

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Conclusion

The introduction of RF wireless power systems offers a glimpse into a future where devices are powered efficiently and sustainably. With their innovative testing solutions, Rohde & Schwarz is paving the way for the adoption of RF energy in IoT applications. This technology promises not only to simplify power management but also to contribute to a greener and more sustainable world by reducing the dependence on disposable batteries.

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Frequently Asked Questions (FAQs)

1. What is RF wireless power technology?
RF wireless power allows devices to be powered wirelessly by converting radio frequency (RF) signals into direct current (DC), eliminating the need for batteries or wired charging solutions.

2. How does the Rohde & Schwarz WPT system benefit the industry?
The WPT system offers a comprehensive testing solution for RF wireless power devices, ensuring compliance with AirFuel RF standards and helping companies bring interoperable products to market.

3. What are the environmental benefits of RF wireless power?
By reducing the need for disposable batteries, RF wireless power can minimize toxic waste and decrease the environmental impact of battery manufacturing.

4. Which industries can benefit from RF wireless power?
RF wireless power is ideal for IoT applications, such as smart homes, smart cars, and industrial automation, where multiple low-power devices need to operate without manual maintenance.

5. What role does the AirFuel Alliance play in the development of RF wireless power?
The AirFuel Alliance is a global coalition working to establish industry standards for RF wireless charging, ensuring interoperability and fostering the adoption of this technology across various markets.