Tag Archives: comms

Kyocera AVX has released low-ESR C0G/NP0 dielectric RF MLCCs (multi-layer ceramic chip capacitors) “inspired by communications market demand for smaller RF capacitors that deliver repeatable performance”, it said. Called KGU, they come in values from 0.1 to 100pF with tolerances as low as ±0.05pF. They come in four chip sizes: 01005, 0402, 0603 or 0805 (EIA). Class I C0G, also ...

STMicroelectronics will be showing an evaluation kit that implements both power-line and sub-GHz RF comms for smart grid infrastructure this week at Enlit Europe. Called EVLKST8500GH-2, it combines the company’s ST8500 power-line communication SoC, STLD1 line driver and S2-LP low-power long-range sub-GHz radio transceiver – a chipset which is certified to the v1.4 Hybrid specification of power-line communication industry body ...

Concurrent Technologies has announced a plug-in dual enclave switch card for equipment racks. Called Iris, it “acts as the system keystone to provide secure, high bandwidth switch connections between each PIC, critical in ensuring they work together”, according to the company. “Typical applications include force protection, situational awareness, command, control and mission computing.” It supports physically-separate data plane and control ...

Qualcomm has validated Anritsu’s MT8000A comms tester for sub-6GHz 5G NR small cells using Qualcomm’s 5G RAN platform and its QDART (development acceleration resource toolkit). “The Qualcomm FSM100 5G RAN Platform is a very capable 5G NR small cell solution that is used widely by mobile operators,” according to Anritsu. “The platform is designed to help OEMs reuse their software ...

ETSI’s international emergency communications interoperability plugfest revealed that 87% of 285 test pairings were interoperable. The remote event was a cooperation between ETSI, EENA (European emergency number association) and NENA (9-1-1 association) – this was the first time the European event partnered with NENA’s US ICE 9 event. “Crossing borders and oceans, the event helped to ensure efficient, interoperable emergency communications for ...

The inverse chirp z-transform (ICZT) can be used with chirp contours that perform partial or multiple revolutions on the unit circle, according to engineers at Iowa State University. Last year, Iowa State engineers Alexander Stoytchev and Vladimir Sukhoy created a closed-form solution for the ICZT, which generalises the inverse fast Fourier transform (IFFT) off the unit circle in the complex ...

IBM Zurich has demonstrated a novel optical receiver that can achieve an aggregate bandwidth of 160Gbit/s through four optical fibres. “This is not only the fastest data transmission speed to date, but the optical receiver also features power-on/off functionality and can wake-up and achieve phase-lock in 8ns, the shortest switch time in record,” said the organisers of the Optical Networking ...

I just came across a lovely idea – data by carrier pigeon – apparently first seen as a request for comment (RFC 1149) from the Internet Engineering Task Force in 1990. Wikipedia has a whole page on it. It appears the original RFC proposes paper duct-taped to a pigeon’s leg as the means of transmission, which has been done (read ...

European researchers have used silicon nitride optical resonators on a chip to transmit data on 179 individual optical carriers, completely covering the optical telecoms C and L bands (centred near 1.55μm), and offering a transmission rate of 55Tbit/s over 75km. “This is equivalent to more than five billion phone calls or more than two million HD TV channels. It is ...

42.5dB of low loss optical gain has been demonstrated in a CMOS waveguide at wavelengths around 1,500nm. Key to the achievement is a parametric amplifier architecture using a silicon nitride waveguide with far higher silicon content than usual – Si7N3. “We have developed an optical amplifier which is able to amplify light by 17,000 times at the telecommunications wavelength,” said Assistant ...