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Anatech Electronics September 2023 Newsletter - RF Cafe

 

Sam Benzacar of Anatech Electronics, an RF and microwave filter company, has published his September 2023 newsletter that features his short op−ed entitled "Wi-Fi: More Than High-Speed Connectivity." In it, Sam discusses the pervasive use of existing and planned WiFi networks for use in monitoring and tracking applications. The IEEE has created a new standard, IEEE 802.11bf, which "... Aims to Enable a New Application of WLAN Technology: WLAN Sensing." "This standardization project aims to enhance the reliability and efficiency of WLAN sensing and establish interoperability of wireless devices to enable a wide range of new and useful applications. Measurements obtained with WLAN sensing can be used to support new industrial and commercial applications in semiconductor manufacturing, enterprise networking, and test and measurement equipment." As the bands become more populated with users, stricter filtering will be needed, and that's where Anatech's expertise comes in.

A Word from Sam Benzacar - Wi-Fi: More Than High-Speed Connectivity

Anatech Electronics September 2023 Newsletter (Sam Benzacar) - RF CafeBy Sam Benzacar

As Wi-Fi data rates get faster with each generation, the technology is often faster than the broadband sources supporting it. However, there's a lot more going on with Wi-Fi than speed. For example, Wi-Fi has recently gotten a lot of attention for its ability to track the presence and movement of people and objects. This capability, called Wi-Fi sensing, detects signal reflections and other disruptions, and uses machine learning algorithms to analyze them to determine who (or what) is moving and in what direction. As Wi-Fi sensing uses existing hardware and doesn't require cameras or other sensors for detection, it's a lot less expensive and almost effortless to deploy.

While multiple sensing technologies have been available for many years, the characteristics of wireless technologies give Wi-Fi sensing distinct advantages. For example, wireless sensing works in non-line-of-sight conditions and supports wider coverage areas compared to infrared-based sensing. Unlike video-based sensing, wireless sensing can operate in poor visibility and lighting conditions and preserve user's privacy. In contrast to other wireless sensing technologies, Wi-Fi sensing leverages the fact that Wi-Fi is a low-cost and widely deployed technology. It's also standardized, which allows multi-vendor interoperability and supports data communications, ranging, and sensing with a single chipset.

As a result, it shouldn't be surprising that it's being widely adopted throughout many markets, from healthcare to retail, hospitals, home automation, and others. For security applications, Wi-Fi sensing can detect unauthorized access to a specific area, and when unexpected movement is detected, the system triggers alarms or sends alerts. It can also be integrated into smart home systems to automate tasks such as turning lights on and off, adjusting thermostats, or activating home security systems.

In healthcare, it can be used for patient monitoring by tracking a person's movements to help with fall detection and medication adherence. In retail settings, Wi-Fi sensing can help businesses collect data on customer behavior and foot traffic patterns, and the resulting data can be analyzed to gain insights into human behavior, occupancy patterns, and trends that lead to improved store layouts and marketing strategies.

Wi-Fi sensing has become so pervasive that the IEEE has created an amendment to the IEEE 802 standard called IEEE 802.11bf that's designed to remove roadblocks to Wi-Fi sensing adoption posed by the fact that the IEEE 802 standard has never defined sensing-specific features. Consequently, it was limited to proprietary implementations with limited interoperability. Specifically, the amendment defines an interface for sensing applications to request and obtain sensing measurements, allows for sensing applications to use devices by multiple vendors, and lowers the overhead associated with obtaining sensing measurements, among other features.


France Says iPhone 12 Exceeds Radiation Limits 

France Says iPhone 12 Exceeds Radiation Limits - RF CafeFrench regulators ordered Apple to stop selling the iPhone 12 because it emits electromagnetic radiation above EU standards. Apple disputes the findings and says the phone has been certified by multiple international bodies and complies with all applicable regulations and standards for radiation worldwide. The National Frequency Agency (ANFR) said it will monitor device updates, and if they do not work, Apple will have to recall the phones. The iPhone 12's radiation levels are safe, according to France's digital minister, and acknowledged that its tests don't reflect typical phone use but said the phone's radiation levels are still well below levels that could cause harm. An update will be released to prevent iPhone 12 radiation exposure from surpassing the limit. 


LoRaWAN Sets New Transmission Record 

LoRaWAN Sets New Transmission Record - RF CafeThe LoRaWAN world record for transmission distance of 517 mi has just been surpassed, with the new record standing at 830 miles with LoRaWAN trackers on a fishing boat on buoys on the coast of Portugal contacting a gateway in the Canarian Islands. What's even more impressive is that the record was set at sea level rather than a high-altitude balloon, which was the case for the previous record. LoRa technology operates in the ISM bands at 868 and 915 MHz. The STMicroelectronics STEVAL-STRKT01 LoRa IoT tracking device used in the test is typically employed in applications covering up to 100 m. 


Verizon, T-Mobile Corner 5% of U.S. FWA Market 

Verizon, T-Mobile Corner 5% of U.S. FWA Market - RF CafeAccording to Leichtman Research Group, Verizon and T-Mobile fixed wireless broadband now control 5.2% of the U.S. home internet market. The pair added 893,000 fixed wireless access users in the second quarter, bringing their number of subscribers to 5.9 million, twice the 2.244 million they had a year ago. However, as more consumers adopt these services, the technology's capacity issues may present a problem. Performance has improved marginally to 33 to 182 Mb/s since T-Mobile Home Internet launched a year ago, with download speeds from 35 to 115 Mb/s and upload speeds between 6 and 23 Mb/s. 


MIT Develops Underwater Network 

MIT Develops Underwater Network - RF CafeMIT researchers have developed ultra-low-power underwater networking and communication technology that uses piezoelectric materials and a Van Atta array to transmit acoustic signals at kilometer-plus ranges without a battery. This technology could be used for various applications, such as underwater monitoring, tracking, and communication. Van Atta arrays are a series of connected piezoelectric sensors that can triangulate and redirect signals back toward their source. This makes them more efficient than acoustic devices that transmit data omnidirectionally, leading to energy loss and shorter ranges from signal scatter. The acoustic sensors measure 3 x 3 ft. and can simultaneously reflect multiple signals at distances up to about 5 km. 


Anatech Electronics Introduces a New Line of Suspended Stripline and Waveguide Type RF Filters

Anatech Electronics Waveguide Filters - RF Cafe

LINKS: Waveguide Bandstop & Waveguide Bandpass 

Anatech Electronics Suspended Stripline Filters - RF Cafe

LINKS:  Suspended Stripline Highpass  & Suspended Stripline Lowpass


Check out Our Filter Products

Anatech Electronics Cavity Band Pass Filters       Anatech Electronics LC Bandpass Filters - RF Cafe       Anatech Electronics Cavity Bandpass/Notch Filters - RF Cafe

    Cavity Band Pass Filters             LC Band Pass Filters           Cavity Bandstop/Notch Filter


About Anatech Electronics

Anatech Electronics, Inc. (AEI) specializes in the design and manufacture of standard and custom RF and microwave filters and other passive components and subsystems employed in commercial, industrial, and aerospace and applications. Products are available from an operating frequency range of 10 kHz to 30 GHz and include cavity, ceramic, crystal, LC, and surface acoustic wave (SAW), as well as power combiners/dividers, duplexers and diplexers, directional couplers, terminations, attenuators, circulators, EMI filters, and lightning arrestors. The company's custom products and capabilities are available at www.anatechelectronics.com.


Contact:

Anatech Electronics, Inc.
70 Outwater Lane
Garfield, NJ 07026
(973) 772-4242

sales@anatechelectronics.com

 

 

Posted August 17, 2023

Werbel Microwave (power dividers, couplers)

About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright:
1996 - 2024

Webmaster:

Kirt Blattenberger,

BSEE | KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

Copyright  1996 - 2026

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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