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.
Real-time data hub for smart electromobility
August 27, 2015
Intelligent mobility is requires that cars can share data – for example with other vehicles, with services providers, repair ...
Apple iCar: Do iCare?
Qorvo takes strategic stake in MEMS vendor Cavendish
Here strives to establish uniform auto sensor data format
Panasonic to close Beijing battery factory, sheds 1,300 jobs
TSMC pulls plug on solar business
August 27, 2015
TSMC's six-year flirtation with solar and LED manufacturing as diversifying alternatives to IC foundry work is coming to ...
Will profits move from LED packages towards LED drivers?
Racing car technology reaches road freight vehicles
Another fusion reactor breakthrough
- Software-Defined Radio Handbook
- Why Making the Move from a Variable Transformer to a VariPLUS is the Right Decision
- Automating Leakage and Functional Testing
- Automotive Circuit Protection using Littelfuse Automotive TVS Diodes
InterviewCEO interview: Ambiq sees broader options for low voltage
Mike Noonen, recently appointed interim CEO at microcontroller startup Ambiq Micro, discusses the focus and opportunities for this pioneering company designing circuits that can operate below the threshold ...
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, Novelda is giving away two full XeThru Inspiration kits worth 1499 US Dollars each, for EETimes Europe's readers to experiment first hand with its XeThru technology.Based on the use of radio waves, rather than infrared, ultrasound or light, the company's X2M1000 Inspiration modules can detect presence just from the chest movement while breathing, and measure both the rate and... MORE INFO AND LAST MONTH' WINNERS...
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.