Magnetic sheets for noise suppression and RFID

20 August 2008 Telecoms, Datacoms, Wireless, IoT

Alps Electric has developed Liqualloy HMSAW series magnetic sheets for noise suppression and HMSAS series magnetic sheets for RFID.

Circuit board parts are becoming increasingly dense due to set products' higher functionality coupled with their smaller size and thinner profiles. Accordingly, interference from radio waves or magnetic fields that is unexpected at the design stage is likely to occur. So that end-products can function correctly, certain measures for noise suppression should be applied during the development period.

The HMSAW series delivers what is said to be the industry's best noise control with permeability of 35. The material is effective over the frequency range from 10 MHz to 5 GHz and in temperatures between -40°C and +85°C. It achieves minimum surface resistance of 1 MΩ in magnetic sheets measuring 0,05, 0,1 or 0,2 mm thick and with flame retardance according to UL94 V-0.

In addition, in some applications magnetic sheets are used to efficiently capture radio waves. In an RFID system, such as in eMoney applications, radio waves are influenced by other parts and devices and thus do not reach the antenna properly. In such cases, the efficiency of the communication system in terms of capturing the radio waves needs to be improved. For such requirements, the HMSAS series delivers magnetic permeability of 100 in the 13,56 MHz band, said to be the best in the industry.

Both types of magnetic sheets can be reprocessed into shapes that meet the requirements of individual products. For example, they can be punched out in the size of a mobile phone's battery cover or processed like stickers, depending on customer needs.

For more information visit www.alps.com

Further reading:

Power amps for portable radio comms systems
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
CML Micro expands its SµRF product portfolio with a pair of high efficiency single- and two-stage power amplifiers that offer outstanding performance for a wide range of dual-cell lithium battery-powered wireless devices.

Read more...

---

RF agile transceiver
Altron Arrow Telecoms, Datacoms, Wireless, IoT
The AD9361 is a high performance, highly integrated RF Agile Transceiver designed for use in 3G and 4G base station applications.

Read more...

---

Choosing a GNSS receiver
RF Design Telecoms, Datacoms, Wireless, IoT
Applications requiring sub-ten-meter positioning accuracy today can choose between single-band or dual-band technology. While this decision might seem as simple as flipping a coin, it is far from that.

Read more...

---

Tri-Teq’s latest range of filters
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
Tri-Teq recently presented its latest filter products, which included passive and co-site mitigation filters (lumped element and suspended substrate technologies) and tunable filters (bandpass and harmonic switched filters).

Read more...

---

Why GNSS positioning precision is enabling the next wave of IoT applications
iCorp Technologies Editor's Choice Telecoms, Datacoms, Wireless, IoT
While high-performance GNSS implementations are achievable with few limitations, most real-world applications must balance power consumption, form factor and accuracy requirements.

Read more...

---

The evolution of 4D imaging radar
Altron Arrow Telecoms, Datacoms, Wireless, IoT
4D imaging radar is redefining automotive sensing with unmatched precision, scalability and resilience and, as global adoption accelerates, this technology is poised to become a cornerstone of autonomous mobility.

Read more...

---

Links Field Networks: The perfect fit for telematics in Africa
Links Field Networks Telecoms, Datacoms, Wireless, IoT
Operating at the intersection of global SIM innovation and local market intelligence, Links Field Networks has emerged as a premier provider of telematics-oriented connectivity across Africa and beyond.

Read more...

---

RF direct conversion receiver
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
The CMX994 series from CML Micro is a family of direct conversion receiver ICs with the ability to dynamically select power against performance modes.

Read more...

---

Bridging the future with RAKWireless WisNode devices
Otto Wireless Solutions Telecoms, Datacoms, Wireless, IoT
The WisNode Bridge series by RAKWireless is designed to convert traditional wired industrial protocols like RS485 and Modbus into LoRa-compatible signals.

Read more...

---

Mission-critical RF transceiver
Vepac Electronics Telecoms, Datacoms, Wireless, IoT
The Iris SQN9506 from Sequans Communications is a wide-band RF transceiver that operates from 220 MHz to 7,125 GHz.

Read more...

---