5G Technology World

We have looked at the “tunnel radio” problem and one solution using one (or likely several) fixed-location distributed antennas. This part looks at an attentive, informally called the “leaky cable” or “leaky feeder” solution. Q: What is the formal name for this approach? A: Technically, it is known as a radiating coaxial-cable system. It is a hybrid communication system that employs both wired and wireless features.

New and old technologies provide critical tunnel wireless links. Providing and maintaining wireless, mobile connectivity within underground tunnel-like environments (often described as “tunnel radio”), as well as to the surface, is a challenge for many reasons.

Stackpole Electronics offers the RNCQ Series high-frequency thin film chip resistor for RF and microwave designs operating above 1 GHz. The series supports frequency capability up to 70 GHz in 0201 size and 50 GHz in 0402 and 0603 sizes, with thin film construction and a high-purity alumina substrate to help maintain stable impedance at higher frequencies.

Quad-channel, wideband RF transceiver designed to support base station applications By Aimee Kalnoskas | September 2, 2026 Filed Under: Uncategorized Next Article

Mini-Circuits has announced two GaN-on-SiC HEMT MMIC power amplifiers, GNA-63-5W+ and GNA-252-5W+, for defense, communications, satellite and test systems. The GNA-63-5W+ operates from 10 MHz to 6 GHz with typical saturated output power of +38.5 dBm, 12 dB gain and 35% PAE, while the GNA-252-5W+ covers 10 MHz to 2.5 GHz with typical saturated output power of +40 dBm, 13.5 dB gain and 47% PAE.

Silicon Labs has released the BG2B, a Bluetooth 6 SoC built for battery-powered IoT devices needing secure ranging, low power draw, and fewer external components. It’s the company’s lowest-power Bluetooth LE part to date, with a dual-output DC-DC architecture and multi-core design. Compared to the company’s previous lowest-power Bluetooth LE SoC, BG2B cuts MCU active current 14-15%, lowers Bluetooth receive current, and drops EM2 sleep current with RAM retention to 1.1 µA.

Modelithics® has released Modelithics COMPLETE Library™ v26.4 for Keysight ADS, with support for ADS 2024 through ADS 2027 on Windows and Linux 64-bit platforms. The update adds 25 nonlinear Microchip diode models including PIN and varactor families, six nonlinear GaN HEMT models from Guerilla RF, 20 new Microwave Global Models™ for passive components and three TTM coupler models, with frequency coverage extending to 110 GHz for selected diode models and 150 GHz for selected passive models.

ROHM Semiconductor has announced the RTD-EVK-G2 Terahertz wave device evaluation kit, which includes a 2nd Generation terahertz wave oscillation device, cable and evaluation board for THz wave oscillation and detection. The RTD-based device uses a 0.5 × 0.5 mm chip in a 4.0 × 4.3 mm PLCC package and delivers output power up to 40 µW, about four times the 1st generation device.

Timing holdover keeps a system’s clock accurate after it loses its outside timing reference. It can last for seconds, hours, or even days. Telecom networks, radar systems, and satellite constellations all depend on it the moment that reference disappears. Without holdover, these systems lose the shared clock that keeps them in sync.

EnSilica has announced two Ku-band beamformer integrated circuits, the ENS92051 and ENS92052, which offer best-in-class power consumption and performance. They are designed to address the needs of the next generation of electronically steered antennas for a range of user terminals used with LEO, MEO, and GEO satellite constellations. The ENS92051 is a dual-beam Ku-band receiver (Rx) supporting eight channels with separate amplitude and phase control.