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High bandwidth, common mode filters serve multi-Gbit serial interfaces

Tue, May 24, 2022

Common-mode filters from STMicroelectronics have a wide differential bandwidth of 10.7GHz to protect antennas in adjacent wireless circuitry. The two-channel ECMF2-40A100N10 and four-channel ECMF4-40A100N10 are compatible with high-speed interface standards including USB 3.2 Gen 2, USB4, HDMI 2.1 and DisplayPort.

The common mode filters have low serial resistance of just 3.0 Ohms, which minimises eye diagram distortion, to preserve signal integrity. The filters deliver deep common-mode attenuation (Scc21) from 2.4 to 7.0GHz, reaching -21dB at 5.0GHz, and effectively prevent interference with Wi-Fi and Bluetooth receivers, added ST.

In addition to tackling antenna de-sensitivity issues, the filters can be used to reduce general interface noise to ensure compliance with electromagnetic compatibility (EMC) regulations. Electrostatic discharge (ESD) protection up to ±9kV (contact discharge) and ±20kV (air discharge) is also built-in. This level of protection exceeds IEC 61000-4-2 level 4, ST added.

Both filters are housed in compact micro quad flat no-lead (µQFN) packages which are just 0.5mm high. They are suitable for demanding industrial applications as well as consumer products and can be used in smart factory equipment, imaging systems, medical devices, laboratory equipment, home-automation systems, set-top boxes, smart televisions, game consoles, notebooks, tablets and docking stations.

Evaluation boards are available with a choice of SMA connector or USB-C connector.

The ECMF2-40A100N6 is supplied in a 1.35 x 1.4mm six-lead µQFN-6L and the ECMF4-40A100N10 is in a 1.35 x 2.2mm 10-lead µQFN-10L. Both filters are in production now.

http://www.st.com

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Murata combines Wi-Fi 6 and Bluetooth 5.3 in single module

Tue, May 24, 2022

In collaboration with NXP Semiconductors, Murata has developed the Type 1XL Wi-Fi 6 and Bluetooth 5.3 module. It uses proprietary packaging and is the latest in the company’s low power, small form factor communication modules for the IoT.

The dual band module is based on the NXP 88W9098 combo chipset and supports IEEE 802.11a / b / g / n / ac / ax 2 x 2 multi-user, multiple input, multiple output (MU-MIMO) and Bluetooth 5.3 Low Energy (LE).

The Wi-Fi section of the module supports connectivity up to 1.4 times faster than conventional Wi-Fi compatible devices, said Murata, offering data rates of up to 1200Mbits per second. It also supports the PCIe 3.0 interface with optional support for SDIO 3.0. The Bluetooth 5.3 LE portion of the module supports speeds of up to 2Mbits per second with a high speed four-wire UART interface, together with optional support for SDIO and PCM for audio data.

The Type 1XL module employs hardware mechanisms and algorithms to optimise Wi-Fi and Bluetooth co-existence. The module size is 19.1 x 16.5 x 2.1mm, small enough for integration in to size- and power-sensitive electronic devices for IoT, smart home, audio/video/voice, smart TV and gateway applications, said Murata. The module will have a reference antennae design for FCC/IC certifications and CE conducted test to provide a lower development cost and faster time to market.

“The wireless communication bandwidth is tightening within our homes and offices with more streaming content, such as 4K/8K video, and traffic increase by teleworking and remote video conference calls,” explained Akira Sasaki, manager of the IoT Module department at Murata. “The low cost, space-saving Type 1XL module enables high-speed communication, which significantly improves quality.”

The Type 1XL module is now in mass production.

Murata manufactures electronic components, modules, and devices. Its product range includes ceramic capacitors, resistors / thermistors, inductors / chokes, timing devices, buzzers, sensors and EMI suppression filters. It also manufactures Bluetooth and WiFi modules, board-mount DC/DC converters as well as standard and custom AC/DC power supplies.

http://www.murata.com

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Rohde & Schwarz includes 56 and 67GHz options for SMW200A

Tue, May 24, 2022

Two new maximum frequencies for the SMW200A vector signal generator are now available from Rohde & Schwarz.

The R&S SMW200A is believed to be the vector signal generator to enable flat frequency response and 2GHz modulation bandwidth above 44GHz. In addition to all applications already supported up to 44GHz, the 100kHz to 56GHz option covers all currently used 5G frequencies, as well as earth to satellite applications. The 100kHz to 67GHz option also supports planned higher frequency 5G bands, the 60GHz WiGig band and inter-satellite links.

Until this introduction, said Rohde & Schwarz, the ceiling for a standalone vector signal generator was 44GHz. Higher frequencies have only been possible with additional external frequency upconverters or lower accuracy. The new options for maximum frequencies of 56 and 67GHz mean that the R&S SMW200A raises the limits for generating wide bandwidth digitally modulated signals of high quality. A maximum modulation bandwidth of 2GHz is supported, meeting the requirements of even the wider subcarrier spacings defined for 5G FR2 Release 17, and wideband satellite transmissions.

Applications in the U and V bands now support mobile radio, wireless LAN and satellite communications. The R&S SMW200A is designed for mobile radio engineers developing RF components and products to support the 5G mobile radio spectrum available in the 47GHz frequency band already allocated by the FCC to US network operators as well as those working to 3GPP Release 17 which specifies further enhancements to 5G, which will need a signal generator to cover the extended FR2 frequency range from 52.6 to 71GHz. According to Rohde & Schwarz, the only suitable signal generator currently available is an R&S SMW200A with a 67GHz frequency option – supporting up to 72 GHz in over range mode.

The new frequency options are also of interest for engineers working on high frequency WiFi and wireless LAN, including IEEE 802.11ad, which operates in the 60GHz unlicensed band (57 to 71GHz). For satellite communication applications, forward and reverse links operate between 37.5 and 52.4GHz, inter-satellite links use frequencies up to 66GHz with bandwidths up to 2GHz.

In addition, it can be used for demanding applications above 44GHz throughout the aerospace and defence industry, or for generating digitally modulated signals including early research on 6G components and systems.

The R&S SMW200A vector signal generator frequency options are now available from Rohde & Schwarz.

http://www.rohde-schwarz

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Microchip introduces timing system traceable to UTC for more control

Fri, May 20, 2022

Cybersecurity threats to Global Navigation Satellite Systems (GNSS) are addressed by Microchip Technology, with the introduction of an alternative time system that is traceable to universal co-ordinated time (UTC) and not dependent on GNSS. The Precise Time Scale System provides nations, institutions, critical infrastructure operators and scientific labs with complete control over the time source that their infrastructure depends on, said Microchip.

The integrated system is capable of providing timing accuracies comparable to the world’s best national laboratories, continued the company. It consists of a SyncSystem 4380A Time Scale Edition which generates an autonomous time scale derived from combining several independent clocks with a multi-channel instrument for measuring and comparing clock performance. There is also the Time Scale Orchestrator software providing a unified view with a built-in database that integrates the management, monitoring, alarming, and reporting functions of the individual products that form the time scale system.

Other elements in the system are the 5071A Cesium clock primary frequency standard and MHM 2020 active hydrogen maser. These atomic clocks from Microchip provide accurate and stable frequencies that are continuously measured against each other to compute and generate the ensemble time scale frequency.

The Precise Time Scale System integrates these in a turnkey system, available in a single rack and guaranteed by a complete factory acceptance test.

Microchip’s SyncServer S600 / S650 and TimeProvider 4100 time servers are integrated to provide Trusted Time to critical infrastructure using both network time protocol (NTP) and precision time qprotocol (PTP).

Randy Brudzinski, vice president, Microchip’s frequency and time systems business unit explained that by implementing an autonomous time source, “a nation can control and leverage time as a utility to safeguard critical infrastructure including its transportation, financial sector, communications and power utilities”.

Alternatively, for customers constructing their own time scale systems, Microchip’s time scale products can be purchased individually to provide core time scale functions, such as clock measurement and clock ensemble generation, along with system management, monitoring and performance reporting. The modularity allows timekeepers the ability to procure the system over time as budgets permit and technology evolves.

The Precise Time Scale System is designed to customer requirements.

http://www.microchip.com

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High bandwidth, common mode filters serve multi-Gbit serial interfaces

Murata combines Wi-Fi 6 and Bluetooth 5.3 in single module

Rohde & Schwarz includes 56 and 67GHz options for SMW200A

Microchip introduces timing system traceable to UTC for more control

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