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MWEE MARAPR 2014

Products will be available from the company soon, in 2 GHz, 3 GHz and 5 GHz bands. The wideband SA11-90-0.6VH/2178 antenna provides both vertical and horizontal polarisations. In conjunction with radios, having two-port diversity, it can provide non-line-of-sight (NLOS) connectivity and reliable communications in challenging environmental conditions. The antenna covers the entire frequency range 470 to 700 MHz, meaning that it can be used in situations where a number of channels are spaced widely apart. Having high gain (11 dBi peak) and wide area coverage, with a 90 degree beamwidth the SA11-90-0.6VH/2178 antenna can be used stand-alone to provide sector coverage. Used in a configuration, four units are required to achieve 360 degree coverage. With appropriate power dividers and phase-matched cables, several antennas could also be stacked vertically, producing a narrower elevation beamwidth and increased gain. www.cobham.com LTE protocol stack targets small cell relay nodes backhaul ALPS 521, a Release 11 compliant UE protocol stack from NextG-Com, is designed for easy integration of relay node (RN) backhaul functionality with an existing eNodeB (eNB). Relays are a key element of LTE-Advanced (LTE-A). Traditionally, user equipment (UE) architectures are optimized for a high level of hardware integration, for example using an ASIC, and unlike eNB are based on different design approaches that focus on high volume and power efficiency. ALPS 521 is designed to provide interfaces to eNB network protocols via the NextG-Com IPC framework, and is preintegrated with eNB RN interfaces to the scheduler and eNB controller entities. Using an in-house 3GPP test environment, ALPS 521 is pre-tested with RN-specific scenarios and configuration parameters, and can be flawlessly integrated into the relay architecture. It is fully tested against relevant 3GPP/non 3GPP third party conformance tests specific for relays. www.nextgcom.co.uk Packet microwave 70/80 GHz radio cuts spectrum costs DragonWave has expanded its product portfolio with the introduction of the Harmony Eband, a compact, lightweight radio that operates in the 70-80 GHz spectrum with low-energy consumption. Harmony Eband provides an enhanced option for mobile backhaul markets, that provides reach comparable to the 23-38 GHz band, higher capacity and a lower OPEX. It is also ideally suited for urban and small cell deployments, and comes equipped with multiple ports and a proprietary mechanical design for selfweatherization that simplifies installation and saves on deployment cost. With its integrated switch, the all-outdoor radio claims to provide the industry’s first uncompressed CPRI transport mode that enables wireless fronthaul. Harmony Eband allows operators to tap into readily available spectrum that is generally available at a lower cost and more lightly licensed than lower frequency spectrum. Equipped with a number of features that increase spectral efficiency and that extend the radio’s reach, it also includes extensive networking capabilities compliant with the latest Carrier Ethernet standards. Harmony Eband’s leading performance is demonstrated by operation up to 64 QAM to achieve throughput of 2.6 Gbps full duplex in 500 MHz mode. Spectral efficiency is further enhanced by DragonWave’s Bandwidth Accelerator+, which delivers capacity of up to 4 Gbps. Additionally, Harmony Eband features the DragonWave Reach Extender, leveraging Waveform and Modulation Adaptivity (WMA) and MIMO to extend the radio’s reach and deliver 3 to 7 km links with high availability. With an ultra-low delay mode and its CPRI interface, the radio also supports fronthaul applications. According to the company Harmony Eband meets the capacity and latency requirements required to support fronthaul, macro backhaul and small cell aggregation, and is LTE synchronization ready. www.dragonwaveinc.com Rotary joint for Ka-band SOTM applications Link Microtek has expanded its range of rotary joints with a compact dual-channel coaxial model that has been specifically designed for use in low-profile Ka-band satellite-on-the-move (SOTM) terminals in either military or commercial applications. Manufactured at Link Microtek’s premises in Basingstoke, UK, the AMCORJDKa rotary joint features a central K-type coaxial channel for transmissions in the 27.5 to 31.0 GHz range, together with an outer DC to 3 GHz SMA coaxial channel for L-band receive signals. Microwave performance is excellent, with the transmit channel offering an average power rating of 20 W, a VSWR of 1.5:1 and a maximum insertion loss of 1.0 dB. The receive channel can handle an average power of 1 W, and its VSWR and maximum insertion loss are 1.5:1 and 0.25 dB respectively. Isolation between the two channels is a minimum of 50 dB. The device has been successfully tested with currents as high as 2 A at 24 V, which means that DC can be fed down the outer channel to drive not only the terminal’s LNB but also the motors that enable the antenna to track a satellite while the host vehicle is moving. www.linkmicrotekeng.com 26 Microwave Engineering Europe March-April 2014 www.microwave-eetimes.com


MWEE MARAPR 2014
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