Ls Telcom Ag · XETR:LSX
Ls Telcom — Mesaplexx — LS telcom Summit 2013
17 slides from Ls Telcom's conference presentation, Sep 10, 2013
Slide 1: Active Antenna Systems: Benefits and Challenges
Active Antenna Systems Benefits and Challenges Chris Haslett
Slide 2: The Problem with Radio: so much power is wasted
The Problem with Radio: so much power is wasted Digital mobile radio systems establish multiple point-to-point connections between the base station and the mobile terminal. Neither the base station nor the mobile acts like a terminal in a point- to-point link; they both do something more akin to bro
Slide 3: The Problem with Radio: so much power is wasted
The Problem with Radio: so much power is wasted Increased directivity of the base station radiation could dramatically…. Reduce interference Reduce power required per connection Increase capacity Increase coverage
Slide 4: Smart Base Station Antennas: not a new concept
Smart Base Station Antennas: not a new concept Nokia SMART antenna concept introduced in the 1990’s 4 column antenna 4 input/output connections 4 beams “automatic” optimised weighting of signal for individual users Significant increase in “soft” Plan view of multiple column antenna capacit
Slide 5: Smart Base Station Antennas: agile vertical downtilt
Smart Base Station Antennas: agile vertical downtilt Multiple column antennas used with great reluctance: “a last resort” Single column antennas with multiple beams (in vertical plane) a possibility Gains not as significant when “dumb” Agile, intelligent adjustment of downtilt on a “per carr
Slide 6: Integrated Active Antennas: agile vertical downtilt
Integrated Active Antennas: agile vertical downtilt A single column antenna consists of multiple elements If all elements are fed in phase, a narrow horizontal beam is formed A B C D E F G H
Slide 7: Integrated Active Antennas: agile vertical downtilt
Integrated Active Antennas: agile vertical downtilt Adjusting the phase of the signal to each If the antenna column has a single element causes the beam to tilt transceiver, all carriers will be tilted by This is known as “electrical downtilt” and is approximately the same amount in both in co
Slide 8: Integrated Active Antennas: agile vertical downtilt
Integrated Active Antennas: agile vertical downtilt Great advantages can accrue from being A able to have many different downtilts Tx/Rx Uplink-downlink Tx/Rx B Multiple carrier C Tx/Rx Macro cell and micro cell from D same antenna Tx/Rx Controller E Per sub carrier in LTE systems Tx/Rx
Slide 9: Integrated Active Antennas: agile vertical downtilt
Integrated Active Antennas: agile vertical downtilt Achieving this would result in putting all of A the radio equipment inside the antenna Tx/Rx housing B Tx/Rx An extension of this would be to place the C entire base station functionality inside the Tx/Rx D antenna housing Tx/Rx This is a sig
Slide 10: Integrated Active Antennas: agile vertical downtilt
Integrated Active Antennas: agile vertical downtilt Transceiver A Transmitter Tx/Rx Electronic Devices Receiver Tx/Rx B C Tx/Rx Duplexer Electromagnetic D Tx/Rx Filter Systems Controller E Tx/Rx F Electronic devices lend themselves to Tx/Rx miniaturisation, electromagnetic systems Tx/Rx
Slide 11: Loss/Isolation: system challenges and filter characteristics
Pass band loss An inadequate filter can mess everything up Loss/Isolation System Challenges Capacity maximisation Filter Characteristics Coverage maximisation Insertion loss Adjacent band Power output Rejection rejection Sensitivity Mask response Heat Size Weight Multiband capa
Slide 12: Loss/Isolation: system challenges and filter characteristics
Pass band loss An inadequate filter can mess everything up Loss/Isolation System Challenges Capacity maximisation Filter Characteristics Coverage maximisation Insertion loss Adjacent band Power output Rejection rejection Sensitivity Mask response Heat Size Weight Multiband capa
Slide 13: Loss/Isolation: system challenges and filter characteristics
Pass band loss An inadequate filter can mess everything up Loss/Isolation System Challenges Capacity maximisation Filter Characteristics Coverage maximisation Insertion loss Adjacent band Power output Rejection rejection Sensitivity Mask response Heat Size Weight Multiband capa
Slide 14: The xCube Advantage
Pass band loss The xCube Advantage Loss/Isolation System Challenges Capacity maximisation Filter Characteristics Coverage maximisation Insertion loss Adjacent band Power output Rejection rejection Sensitivity Mask response Heat Size Weight Multiband capable Power handling I
Slide 15: The xCube Advantage: an enabling technology for Integrated Active Antennas
The xCube Advantage: an enabling technology for Integrated Active Antennas 0 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 -20 Getting the required response -40 -60 -80 -100 -120 From a very small package Volume measured in cc rather than litres Remember: in an active antenna at lea
Slide 16: Summary
Summary Integrated Active Antennas can yield many advantages to digital mobile radio networks Increased coverage and capacity Independent optimisation per carrier and per technology Reduced item count at ground level and on the mast Many challenges need to be overcome to make them a realit
Slide 17: Thank you
(A) mesaplexx Thank you