One transceiver per radiator is the only effective solution for Active Antenna Systems says Ubidyne
February 23, 2012 // Jean-Pierre Joosting
There is only one way to build an effective Active Antenna System (AAS) according to Ubidyne that will be featuring its LTE 700MHz uB700™ and 900MHz uB900™ Antenna Embedded Radios at this month’s Mobile World Congress 2012. While there are multiple AAS architectures, Ubidyne believes it is vital to have one transceiver or M-Radio per antenna radiator. This means that an antenna with 16 radiators - or eight cross polar radiators - will also have 16 transceivers.
“While others believe they can build an AAS with less transceivers, we will be presenting simulation results at Mobile World Congress that prove having one small amplifier per radiator is the only way to deliver significant performance benefits,” says Michael Fränkle, CEO of Ubidyne. ”The results show that only a full AAS can meet critical upper sidelobe suppression requirements with margin, while simultaneously providing the highest possible antenna gain over an electrical tilt range of more than 10 degrees. And because of our Self Healing feature, Ubidyne AAS still delivers this performance with up to four transceivers out of 16 being switched off.”
Alternative integrated antennas simply integrate a Remote Radio Head (RRH) into the antenna housing but lack innovative features to increase coverage and capacity such as electronic tilting per carrier or standard, electronic and independent tilting of uplink and downlink, or vertical sectorisation. These features have a major impact on the quality and performance of the network and are packaged in all Ubidyne active antennas.
Other vendors go half-way with a semi AAS that has one amplifier serving several radiators. This reduces the amount of transceivers but performance is significantly impaired and self healing technology cannot correct antenna pattern distortions, such as side lobes.
At Mobile World Congress, Ubidyne will be featuring its latest uB700 full active antenna that supports 4G (LTE) in the 700 MHz digital dividend band for broadband mobile networks in the US as well as the uB900™ that supports GSM, UMTS and LTE in the 900 MHz frequency band to address mobile networks in Europe, Africa, Oceania, Asia and the Middle East. Future products are also in development for the European digital dividend bands of 800 MHz and highband up to 2.6 GHz as well as multi-band solutions.
Dark clouds over lighting business: Osram announces massive job cuts
July 30, 2014
Amidst the decline of conventional illuminants like incandescent bulbs and fluorescent tubes, lighting manufacturer Osram ...
Trillion Sensor Summit program set for Munich
IoT: sensor fusion or confusion?
Next-gen HiFi competition takes place in the car
Rohde & Schwarz acquires IT security company
Pure lithium anode promises more efficient rechargeable batteries
July 29, 2014
Researchers at Stanford University claim to have designed a pure lithium anode that could lead to the prospect of smaller, ...
Is a room temperature superconductor possible?
High-temperature superconductivity discovery paves way for energy superhighways
BMW invoke fast battery chargers to spark EV sales
- Testing GPS with a Simulator
- DSM presents: Select the best plastic for DDR4
- Dual 13A μModule Regulator with Digital Interface for Remote Monitoring & Control of Power
- Exploring the Business Model Evolution of High-Tech Equipment Manufacturers
InterviewCEO interview: China, not Apple, is way to go, says mCube CEO
Ben Lee, CEO of MEMS startup mCube, explains why he wants to spend $37 million on being a supplier of sensors to Chinese ODMs and avoiding a design win with Apple or Samsung.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Altium Ltd is offering EETimes Europe's readers the chance to win one TASKING VX-Toolset for ARM Cortex-M Premium Edition, normally licensed for 2.395 Euros, for ultra-rapid prototyping and code development around ARM Cortex-M based microcontrollers.
The VX-toolset for ARM is the first TASKING compiler suite to receive the Software Platform technology, which is seamlessly...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.