kathrein 2013

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Cellular Systems

Technical Information

and New Products

- Advanced Xpol Antenna Standards

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Kathrein Xpol antennas for polarization diversity

represent the latest development stage in anten-na technology. An ever increasing number of net-

work operators are coming to appreciate the real

advantages of only having to install 3 dual +/- 45

polarized antennas for a complete 3 sector site,

where previously 6 or 9 vertically polarized anten-

nas had to be installed.

For polarization diversity to function properly it is

very important that the different polarized signals

are as independent as possible of each other

(principle of uncorrelated signals). The most

important point of view in this context is the

so-called Cross-polar ratio (CPR), i.e. the ratio

of the signal levels of similar polarizations com-pared to dissimilar polarizations. The CPR should

be quoted for the whole sector width (+/- 60), not

just for the main radiating direction.

The antenna gain is already considerably redu-

ced at the sector edges, therefore a CPR as high

as possible is desired. The system suppliers

demand at least 10 dB for +/- 60from the main

direction. Kathrein Xpol antennas more than fulfil

these requirements in this critical area.

Advanced Xpol Antenna Standards

Half-power Beam Width CPR CPR CPRin Main direction in 30sector in 60sector

65 22 dB 20 dB 15 dB

90 20 dB 15 dB 12 dB

Xpol A-Panels 800/900 MHzTypical Cross Polar Ratio (CPR)

Antennen . Electronic

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Most of the Xpol antennas on the market are

based on the so-called patch technology and on

printed circuit boards for power-splitting purpo-

ses. Kathrein, however, have for many years

used the proven dipole-type technology together

with a low-loss cable harness, which clearly

offers more opportunities for perfecting certain

antenna characteristics.

We present the new, so-called A-Panels as our

concept for the 900 MHz Xpol antenna range. We

adapted the excellent and well proven mechani-

cal design used in our range of GSM 1800 anten-

nas for these A-Panels. Instead of a fibre-glass

cover screwed and sealed to an aluminium back-

plate, the radome now consists of a closed, self-

supporting fibre-glass profile into which the metal

parts of the antenna are inserted. There are no

drill-holes at all in the profile which is closed by

two end caps with short sealing rings. This com-

pletely closed design offers ideal permanent pro-

tection against environmental influences and also

increases the mechanical stability of the anten-

nas.

Apart from the existing comprehensive range of

Xpol antennas which can be found in our catalo-

gues, we now also have low gain versions for

GSM 900 with a length of 656 mm.

1. Excellent cross polar ratio over azimuth

The dipole design delivers remarkable cross

polar ratio not only in the main direction but also

across the complete sector.

2. Low intermodulation products

Unlike printed circuit antennas, the intermodulati-

on products are typically -150 dBc

4. High isolation

Patent pending decoupling elements ensure an

isolation between the two polarization inputs of

min. > 30 dB (typically 35 dB)

5. Constant electrical performance under badweather conditions

Due to the dipole design, rain, ice and snow have

Advantages of Kathreins dipole Xpol antennas compared to typical printed board solutions:


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Type No. 739 620

Input 2 x 7-16 female

Connector position Bottom or topFrequency range 806 960 MHz

VSWR < 1.5

Gain 2 x 12.5 dBi (870 960 MHz)

2 x 12 dBi (806 870 MHz)

Impedance 50

Polarization +45, -45

Front-to-back-ratio, copolar > 30 dB

Half-power beam width +45polarization

Horizontal: 65, vertical: 27

-45polarization


Isolation > 30 dB

Max. power per input 500 Watt (at 50 C ambient temperature)

Weight 6 kg

Wind load Frontal: 110 N (at 150 km/h)

Lateral: 60 N (at 150 km/h)

Rearside: 240 N (at 150 km/h)

Max. wind velocity 200 km/h

Packing size 782 x 287 x 165 mm

Height/width/depth 656 / 262 / 116 mm

Eurocell A-Panel Dual Polarization65Half-power Beam Width739 620

Material: Reflector screen: Weather-proof aluminum.

Radome: Fiberglass, colour: Grey.

All screws and nuts: Stainless steel.

Ice protection: Due to the very sturdy antenna construction and

the protection of the radiating system by the

radome, the antenna remains operational evenunder icy conditions.

Grounding: The metal parts of the antenna including

the mounting kit and the inner conductors

are DC grounded.

Two independent systems for +45and -45polarization

XPol A-Panel 800/900 6512.5dBi

-45 +45

58

262

116

64

72

9

750

710

656

Bottom view

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Type No. 739 646



VSWR < 1.5

Gain 2 x 11 dBi (870 960 MHz)

2 x 10.5 dBi (806 870 MHz)

Impedance 50

Polarization +45, -45

Front-to-back-ratio, copolar > 25 dB

Half-power beam width +45polarization


-45polarization


Isolation > 30 dB

Max. power per input 500 Watt (at 50 C ambient temperature)

Weight 6 kg







Eurocell A-Panel Dual Polarization90Half-power Beam Width739 646









are DC grounded.

Two independent systems for +45and -45polarization

XPol A-Panel 800/900 9011dBi

-45 +45

58

262

116

64

72

9

750

710

656

Bottom view

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The demand for Dual Band Antennas is constant-

ly increasing as ever more GSM 900 operatorsare also getting GSM 1800 licences. A few simple

versions are already available on the market, i.e.

versions for vertical polarization or antennas with

dual-polarization, where the 900 MHz and 1800

MHz systems are arranged separately, one

above the other. At the end of 1998 resp. begin-

ning of 1999 Kathrein will be launching sophisti-

cated Dual Band Antennas which are able to ope-rate in the cross-polarization mode with

interlocked radiating elements for both 900 MHz

and 1800 MHz, whereby the antenna length is

determinated by a single band 900 MHz version.

Moreover, two different versions will be available:

Dual Band Xpol Antennas for GSM 900 and GSM 1800

Circuit diagram A

XXPol Dual Band Antenna

_

4 Inputse. g. Type no. 741 326

(4x)

Circuit diagram B

XXPol Dual Band Antenna

Two Dual BandCombiners (C)are integrated

Inputse.g. Type no. 741 320

CC

(2x)Jumper cableoptional


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1. Only one antenna is required for both bands.

2. All the advantages of Kathreins single bandXpol antennas also apply to Kathreins Dual Band

Antennas.

3. The dimensions are identical to those of a pure

900 MHz Antenna. If an existing GSM 900 station

is extended to become a GSM 900 / 1800 stationthe appearance, wind load and the type of attach-

ment will all remain unaltered.

4. The solution using integrated combiners leads

to considerable savings in feeder cables; if an

existing site is upgraded no further feeder cablesare required apart from those already installed.

5. The enclosed data sheets nos. 741 320 / 741

322 and 741 326 / 741 327 show antenna versi-

ons of 1.3 m and 2 m length. We are also plan-

ning to introduce further versions with lengths of0.65 m und 2.6 m.

Kathrein Dual Band Antennas therefore offer the following advantages:


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Type No. 741 320

Frequency range GSM 900: GSM 1800:

870 960 MHz 1710 1880 MHz

VSWR < 1.5 < 1.5

Gain 2 x 15 dBi 2 x 17 dBi

Impedance 50 50

Polarization +45, -45 +45, -45

Front-to-back-ratio (copolar) > 30 dB > 30 dB

Half-power beam width +45/ -45 +45/ -45

Horizontal: 65 Horizontal: 60

Vertical: 14 Vertical: 8

Max. power 250 Watt 150 Watt

(at 50 C ambient temperature)

Isolation > 30 dB


Connector position Bottom or top

Weight 13 kg







Eurocell A-Panel Dual PolarizationDual Band GSM 900 / 1800 MHz Antenna65Half-power Beam Width, Type No. 741 320









are DC grounded.65

120

14

GSM 900: +45/ -45Polarization

XXPol A-Panel 900/1800 C 65/6015/17dBi

-45 +45

58

262

116

64

72

9

1

390

1

350

1

296

Bottom view

Four independent systems: GSM 900 +45PolarizationGSM 1800 +45Polarization with integrated dual band combiner to one 7-16 female input

GSM 900 45PolarizationGSM 1800 45Polarization

with integrated dual band combiner to one 7-16 female input

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Type No. 741 326


870 960 MHz 1710 1880 MHz

VSWR < 1.5 < 1.5

Gain 2 x 15 dBi 2 x 17 dBi

Impedance 50 50





Vertical: 14 Vertical: 8

Max. power per input 400 Watt 200 Watt


Isolation > 30 dB (GSM 900 GSM 900)9

> 30 dB (GSM 1800 GSM 1800)

> 30 dB (GSM 900 GSM 1800)



Weight 13 kg



Rearside: 490 N (at 150 km/h)Max. wind velocity 200 km/h



Eurocell A-Panel Dual PolarizationDual Band GSM 900 / 1800 MHz Antenna65Half-power Beam Width, Type-No. 741 326




Ice protection: Due to the very sturdy antenna construction andthe protection of the radiating system by the

radome, the antenna remains operational even

under icy conditions.



Four independent systems: GSM 900: +45PolarizationGSM 900: 45PolarizationGSM 1800: +45PolarizationGSM 1800: 45Polarization

65120

14

GSM 900: +45/-45Polarization

XXPol A-Panel 900/1800 65/6015/17dBi

58

262

116

64

72

9

1390

1350

1296

Bottom view

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Type No. 741 322


870 960 MHz 1710 1880 MHz

VSWR < 1.5 < 1.5

Gain 2 x 17 dBi 2 x 18.5 dBi

Impedance 50 50





Vertical: 9 Vertical: 5.5

Max. power 250 Watt 150 Watt


Isolation > 30 dB



Weight 19 kg





Packing size 2057 x 287 x 165 mmHeight/width/depth 1936 / 262 / 116 mm

Eurocell A-Panel Dual PolarizationDual Band GSM 900 / 1800 MHz Antenna65Half-power Beam Width, Type No. 741 322









are DC grounded.

XXPol A-Panel 900/1800 C 65/6017/18.5dBi

65120


-45 +45

58

262

116

64

72

9

20

30

19

90

19

36

Bottom view

Four independent systems: GSM 900 +45PolarizationGSM 1800 +45Polarization with integrated dual band combiner to one 7-16 female input

GSM 900 45PolarizationGSM 1800 45Polarization

with integrated dual band combiner to one 7-16 female input

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64

72

9

2030

1990

1936

58

262

116

Type No. 741 327


870 960 MHz 1710 1880 MHz

VSWR < 1.5 < 1.5

Gain 2 x 17 dBi 2 x 18.5 dBi

Impedance 50 50





Vertical: 9 Vertical: 5.5

Max. power per input 400 Watt 200 Watt


Isolation > 30 dB (GSM 900 GSM 900)9

> 30 dB (GSM 1800 GSM 1800)

> 30 dB (GSM 900 GSM 1800)



Weight 19 kg



Rearside: 770 N (at 150 km/h)Max. wind velocity 200 km/h



Eurocell A-Panel Dual PolarizationDual Band GSM 900 / 1800 MHz Antenna65Half-power Beam Width, Type-No. 741 327




Ice protection: Due to the very sturdy antenna construction andthe protection of the radiating system by the

radome, the antenna remains operational even

under icy conditions.



Four independent systems: GSM 900: +45PolarizationGSM 900: 45PolarizationGSM 1800: +45PolarizationGSM 1800: 45Polarization

65120

XXPol A-Panel 900/1800 65/6017/18.5dBi


Bottom view

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Unobtrusive omni antennas for both GSM 900

and GSM 1800 are now available especially for

microcell applications. These versions are similar

to our Indoor Antennas, but are suitable for out-

door operation and are fitted with an N connector.

Omni Antennas for Microcell Outdoor Systems

Whilst the desired downtilt angle remains con-

stant over the whole azimuth range for antennas

with electrical downtilt, this is only achieved in the

main radiating direction for antennas with mecha-

nical downtilt and is reduced to 0 in the +/ 90

Common coverage calculations for network plan-

ning cannot take this effect into account and

under certain circumstances it can be the reason

for unexpected interferences caused by other

cells On the other hand antennas with electrical

Comparison of Mechanical and Electrical Downtilt

Our existing tool 735 700 is only suitable for use

with the F-Panel product range. The adjustment

tool 738 440 can now be used for positioning all

directional antennas in the 800 / 900 MHz range

as well as the 1800 / 1900 MHz range (Eurocell

antennas, A-Panels, F-Panels).

Azimuth Adjustment Tool for all Eurocell Panel Types


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Omnidirectional Antenna Vertical PolarizationIndoor and outdoor use738 450

Type No. 738 450

Input N female


VSWR < 1.5

Gain 2 dBi

Impedance 50

Polarization Vertical

Max. power 150 Watt (at 50 C ambient temperature)

Weight 200 g

Radome diameter 20 mm

Height 180 mm

Omni 900 3602dBi

Material: Radiator: Brass.

Radome: Fiberglass, colour: White.

Mounting: One hole mounting (16 mm diameter) to surfa-

ces of max. 10 mm thickness.

Grounding: All metal parts of the antenna as well as the

inner conductor and the mounting kit are DC gro-

unded.

180mm

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Omnidirectional Antenna PCN / DECTVertical Polarization Indoor and outdoor use738 451

Type No. 738 451

Input N female


Frequency range 1710 1900 MHz

VSWR < 1.5

Gain 2 dBi

Impedance 50

Polarization Vertical

Max. power 100 Watt (at 50 C ambient temperature)

Weight 150 g

Radome diameter 20 mm

Height 120 mm

Omni 1800 3602dBi

Material: Radiator: Brass.

Radome: Fiberglass, colour: White.

Mounting: One hole mounting (16 mm diameter) to surfa-

ces of max. 10 mm thickness.

Grounding: All metal parts of the antenna as well as the

inner conductor and the mounting kit are DC gro-

unded.

120mm

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Elevation compensation

Precise azimuth adjustment for mast mounted antennas can easily be achieved by using the azimuthadjustment tool.

Azimuth Adjustment Tool738 440

This tool is suitable to all types of Eurocell Panels

Panels A-Panels F-Panels XPol F-Panels

F-Panel

F-Panel

Scale

* Move the stopper to central position

Target object

F-Panel

Clamping device

Scale

A-Panel

Target object

XPol F-Panel

XPol F-Panel

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9985.6354/11/98/1,5/ZWT/HASubjecttoalteration.

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MECHANICAL ELECTRICAL

3 dB

10

-90

0

+90

3 dB

10

-90

0

+90

Downtilt angle varies over the azimuth range:set downtilt angle only in main direction (0),no downtilt in tilt axis direction (+/-90from main beam).

Horizontal half-power beam width increases withrising downtilt angle.

Resulting gain reduction depends on azimuth direction(can rarely be considered in network planning).

Constant downtilt angle over the whole azimuth range.

Horizontal half-power beam independent ofdowntilt angle.

Identical gain reduction for all azimuth directions.

0

6

8

10

COMPARISON OF MECHANICAL AND ELECTRICAL DOWNTILT

HORIZONTAL RADIATION PATTERN IN THE HORIZONTAL PLANE

The shown diagrams are valid for antennas with 13half-power beam width in the vertical radiation pattern.

kathrein 2013

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