Post on 27-Nov-2014
OPTIMIZE AND REDUCE YOUR NETWORK INVESTMENT
Ultra-High Efficiency Antennas
• Founded: 2001
•Management:Extensive experience from supplier and operator environment: Ericsson, Nokia, Lucent, MSI, Allgon
• Location: Stockholm, Sweden
COMPANY- Background
• To produce Erlangs, MB/s and km2 of coverage to
lowest possible production cost!
• To sell Erlangs and MB/s, at a prize that maximizes
profit.
To build sites is not a mission!
OPERATORS MISSION
ANTENNA – Conventional Feed network
To the left, three of the major vendors
can be seen.
The one to the right has a combination
of circuit board and coaxial cables.
But all three suffers from a loss of
one to two dB per meter of antenna
length.
Which means 2-4 dB of loss for a 2
meter 18 dBi antenna!
ANTENNA – Conventional Feed network
ANTENNA – Conventional Dipoles
7
Radiation45 – 70%
(-1,5 to 3 dB)
8
WHY CELLMAX – Efficiency Comparison (2m)GSM PCS UMTS
95 %
65 %
ANTENNA – Brussels Site Reduction
66 Standard 18 dBi Antenna sites 50 CellMax 21dBi Antenna sites
• Coverage probability increased signifficantly with
24% fewer sitesPredictions by
TRAFFIC – Traffic Increase (sub-urban)
Kathrein average321 E
Cellmax average417 E
Antennaswap
30% increase
Design Criteria
ANTENNA – Received SS ComparisonCellMax 21dBi 4 deg vs. Typical 18dBi 2 deg, Sub Urban
Improved QoS
Same range
5 dB stronger level of null-fill
Reduced
Interference
Serving Cell
ANTENNA – Increased coverage, same Ec/I0
Cellmax 21dBi 4 deg
Typical 18dBi 4 deg tilt
Cellmax 21dBi 3 deg Cellmax 21dBi 2 deg
Towards the horizon If we assume that ”same
tilt” means a tilt with the
same radiation towards the
horizon. We will set the two
antennas at a tilt at or near
their VBW
This will give us for the 21 dBi antenna:
Tilt 4 degrees, upper -3 dB (18 dBi) at -2 degrees and lower -3 dB at -6
degrees
For the 18 dBi antenna:
Tilt 7 degrees, upper -3 dB (15 dBi) at -3,5 degrees and lower at -10,5 degrees
Impact of 4 degrees VBW
The geometry of CellMax 4 degrees VBWTowards the horizon
< -16 dB
15 dBi, 163 m
18 dBi, 190 m 18 dBi, 573 m 15 dBi, 1100 m
From a 20 meter tower
a 21 dBi antenna with
4 degrees tilt will give:
Lobe center 21 dBi
286 m
21 dBi 4 degr VBW. 4 degr tilt
Lobe center (21 dBi) at -4 degrees =286 meters
Upper -3 dB (18 dBi) at -2 degrees =573 meters
Lower -3 dB (18 dBi) at -6 degrees = 190 meters
Upper -6 dB (15 dBi) at -1 degree =1100 meters
Lower -6 dB (15 dBi) at -7 degrees = 163 meters
VERTICAL 720
0.0 0.000
0.5 0.272
1.0 0.881
1.5 1.864
2.0 3.302
2.5 5.310
3.0 8.046
3.5 11.579
4.0 16.127
4.5 18.986
5.0 17.033
5.5 14.758
6.0 13.744
6.5 13.854
7.0 14.727
7.5 16.473
8.0 19.366
8.5 24.579
9.0 44.206
The geometry of CellMax 4 degrees VBW
15 dBi, 142 m
18 dBi, 163 m 18 dBi, 382 m 15 dBi, 573 m
From a 20 meter tower a 21 dBi antenna with 5 degrees tilt will give:
Lobe center 21 dBi229 m
21 dBi VBW 4 degr. Tilt 5 degr.
Lobe center (21 dBi) at -5 degrees =229 metersUpper -3 dB (18 dBi) at -3 degrees =382 metersLower -3 dB (18 dBi) at -7degrees = 163 metersUpper -6 dB (15 dBi) at -2degree =573metersLower -6 dB (15 dBi) at -8 degrees = 142 meters
0.0 0.0000.5 0.2721.0 0.8811.5 1.8642.0 3.3022.5 5.3103.0 8.0463.5 11.5794.0 16.1274.5 18.9865.0 17.0335.5 14.7586.0 13.7446.5 13.8547.0 14.7277.5 16.4738.0 19.3668.5 24.5799.0 44.206
Towards the horizon< -17 dB
23
<-12 dBi, 764m
The geometry of 7degrees VBWTowards the horizon< -15 dB From a 20 meter tower
a 21 dBi antenna with 7 degrees tilt will give:
Lobe center 163 m
21 dBi VBW 4degr. Tilt 5 degr. Lobe center (21 dBi) at -5 degrees =286 metersUpper -6 dB (15 dBi) at -2 degree =573 metersLower -6 dB (15 dBi) at -8 degrees = 142 meters
VERTICAL 7200.0 0.0090.5 0.0001.0 0.1641.5 0.5042.0 0.9902.5 1.6243.0 2.4613.5 3.5074.0 4.7914.5 6.3175.0 8.0875.5 10.0506.0 12.3036.5 14.1947.0 14.9917.5 15.0848.0 14.7608.5 13.7009.0 13.128
18 dBi VBW 7 degr. Tilt 7 degr. Lobe center (18 dBi) at 7 degr = 163 mUpper -3 (15 dBi) at -3,5 deg = 327 mLower -3 (15 dBi) at -10,5 =108 m
X15 dBi327 m
X108 m
CellMax15 dBi, 573 m
24
The big picture!
• Pointing 75% further out
• Giving 3-4 dB higher gain in bore sight
• Delivering 1 - 3 dB more radiated power
In total, significantly better
performance in the entire cell.
ANTENNA - CMA-B/6519 E0-8 MET• Freq. Band: 1710 - 2170 MHz
• Gain [dBi]: 18.3 / 18.7 / 19.0
• HBW: 66.0o / 65.0o / 63.5o
• VBW: 7.4o / 6.7o / 6.2o
• VSWR: < 1.5:1
• Isolation: >30dB
• F/B: >25dB
• USLS: >18dB
• 1st Null Fill: <20dB
• XPD: >20dB (10dB ±±±± 60o)
• LxWxD (mm): 1298 x 196 x 122
Sec 1, 60°
SC 265Sec 2, 260°
SC 273
Sec 3, 340°
SC 281
CMA-B/6519 UMTS Trial result (Turkey)
3 Sector trial result
Comparison between Kathrein 742 215 and Cellmax 6519
Average SS increase: +3.8 dB
ANTENNA - CMA-B/6521 E0-6 MET• Freq. Band: 1710 - 2170 MHz
• Gain [dBi]: 20.4 / 20.7 / 21.0
• HBW: 66.0o / 65.0o / 63.5o
• VBW: 4.6o / 4.2o / 3.9o
• VSWR: < 1.5:1
• Isolation: >30dB
• F/B: >25dB
• USLS: >18dB
• 1st Null Fill: <20dB
• XPD: >20dB (10dB ±±±± 60o
• LxWxD (mm): 2060 x 196 x 122
CMA 6521
vs 742 215
LTE ANTENNA FAMILY - CMA-L/6520 E0-8 MET• Freq. Band: 2390 - 2690 MHz
• Gain [dBi]: 19.5 / 20.0
• HBW: 65.0o
• VBW: 5.6o / 5.2o
• VSWR: < 1.5:1
• Isolation: >30dB
• F/B: >25dB
• USLS: >16dB
• 1st Null Fill: <20dB
• XPD: >20dB (10dB ±±±± 60o)
• LxWxD (mm): 1298 x 196 x 122
Cellmax – LTE
Kathrein – 800 10 621, Broadband LTE, 1.4 m
Cellmax +2.7 dB on LTE
WHY CELLMAX?•Reduced CAPEX and OPEX
- 25% fewer sites needed
•Faster Return on Investment and larger profitabillity – 10%-30% traffic increase
•Reduced Churn – Larger indoor coverage from Cellmax sites – Less interference
•Faster rollout – 4 week lead time
# sites with traditional antennas, 24% fewer with Cellmax
Thank You