Anatech Electronics February 2022 Newsletter

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Anatech Electronics Header: February 2022 Newsletter


Path loss Friis equation formula - RF CafeSam Benzacar of Anatech Electronics, an RF and microwave filter company, has published his February 2022 newsletter that features his short op−ed entitled "Wi-Fi HaLow Takes Aim at Long-Range IoT," where he points out a serious limitation to the evolving mm-wave craze that is synonymous with 5G and 6G (a major component of IoT). The super wide bandwidths available with mm-wave are great, but the familiar Friis equation governing free space path loss shows that power at the receiver (PRx) decreases at a rate of 20 dB per decade as frequency increases. Wi-Fi HaLow operates in the sub-1 GHz realm, so it naturally (literally) has a longer range than even the 2.4 and 5 GHz ISM band WiFi systems. Also included in this newsletter are a few stories on industry happenings like the FCC mandating specific specification labels for WiFi products and mm-wave shoe screening at airports (underwear screening comes next).

A Word from Sam Benzacar

Wi-Fi HaLow Takes Aim at Long-Range IoT

Anatech Electronics February 2022 Newsletter (Sam Benzacar) - RF CafeBy Sam Benzacar

The proliferation of Wi-Fi standards continues with IEEE 802.11ah (Wi-Fi HaLow) standard certified last November by the Wi-Fi Alliance, and unlike all but one other Wi-Fi standard, this one operates in spectrum below 1 GHz. That makes it nicely suited for IoT and a variety of other applications that previous variants cannot serve because of their limited range. In contrast, Wi-Fi HaLow can cover distances of at least 1 km, can penetrate through walls and other obstacles, and consumes about the same amount of DC power as Bluetooth. Its maximum data rate is 347 Mb/s, which is more than adequate for nearly every industrial IoT device.

For anyone following Wi-Fi, it's easy to confuse Wi-Fi HaLow with IEEE 802.11af (White-Fi, Super Wi-Fi) that was developed earlier and operates on a licensed basis in the VHF and UHF spectrum between 54 and 790 MHz uses cognitive radio technology. It's cognitive because it uses a level of intelligence to mitigate interference between various nearby services such as analog and digital TV and wireless microphones. Wi-Fi Halo was designed specifically for the use with sensors and operates in traditional unlicensed Industrial Scientific and Medical (ISM) bands. It offers a sleep mode to conserve battery charge, and short data packets minimize transmit time and power usage.

IoT Wi-Fi Frequency Bands - RF CafeAnother big benefit for IoT is that it can support up to 8191 nodes, and an antenna-sectorization feature partitions the coverage area so stations can pass messages over longer distances at low power. It has native IP support as well as the latest levels of Wi-Fi security and as an open standard doesn't need proprietary hubs or gateways. The standard is also backward compatible with older Wi-Fi protocols.

What all this means is that there is finally a Wi-Fi standard that can accommodate an enormous number of applications and sensor nodes via a single access point over long distances, and as the devices it communicates with can operate at very low power, they can optimize the operating lifetime of a coin cell battery. Realistically, its only drawback at the moment is its comparatively low data transfer rates compared with the current Wi-Fi 6 and eventually Wi-Fi 7, but the Wi-Fi Alliance is working to increase them over time. When that occurs, it might just be the only Wi-Fi standard that matters.

We can always find a solution!


Sigfox Down but Not Out

Sigfox Down but Not Out - RF CafeThe French low-power wide area network (LPWAN) company Sigfox has filed for receivership due to what the company calls slower than expected adoption worsened by the pandemic. The company has been in turmoil for many years as executives have come and gone and financial targets have been missed. According to French law, because it can continue to operate for six months while it figures out how to either restructure itself or be sold. At the moment, Sigfox reportedly supports only 20 million connections worldwide, a tiny share of a market in which 2.1 billion IoT connections are already in operation.


FCC Mandates Nutrition Labels for Broadband

The broadband and cable business has long been criticized for many of its policies, perhaps the most onerous of which is trying to understand the monthly bill. To solve this, the FCC has come up with what the media is calling "nutrition labels". It would require carriers such as AT&T, Comcast, and Verizon two provide labels similar to those found on food products at the point of sale. They will include the price of the plan, its speed, data allowances, any introductory rates that might lead to later price hikes, and practices such as data throttling.


FirstNet Deployments Surge

FirstNet Deployments Surge - RF CafeFirstNet added more than 1 million connections in 2021, adding 3 million connections to more than 19,500 public-safety agencies, according to a report from AT&T that is responsible for building and maintaining the nationwide public-safety broadband network. The uptake is due in part because the FirstNet market has grown to include not just state and local fire, police, and EMS, the "primary" but federal users such as military personnel and 911 telecommunicators. FirstNet also serves "extended primary" users that often support emergency responders, such as workers in the healthcare, utility. and government sectors. In October, AT&T announced that it has completed more than 95% of the contracted Band 14 deployment for the FirstNet system, surpassing the milestone about 6 months ahead of schedule.


Millimeter-Wave Shoe Screening for Airports

Millimeter-Wave Shoe Screening for Airports - RF CafeLiberty Defense Holdings's Hexwave millimeter-wave shoe screening technology that was initially developed at Pacific Northwest National Laboratory (PNNL) has been awarded the 2022 Interagency Partnership Award from the Federal Laboratory Consortium for Technology Transfer (FLC). The technology, when combined with a high-definition advanced body scanner that the company is also licensed for, can potentially eliminate the need for passengers to remove their shoes during the check-in process. It can detect objects in footwear that should reduce the time and annoyance of the screening process. Hexwave can be integrated into the floor of existing airport body scanning portals or be used as a standalone unit.


Getting Ready for 5G:

Anatech Electronics introduce New Ka band 30.5 GHz Waveguide Band Pass Filter. Featuring a center frequency of 30.5 GHz, a bandwidth of 1000 MHz, an Insertion Loss 1 dB Max, and a Power Handling is 20 watts.

Ka band 30.5GHz Waveguide Band Pass Filter - RF Cafe

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


Anatech Electronics, Inc.

70 Outwater Lane

Garfield, NJ 07026

(973) 772-4242



Posted February 20, 2022