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BCA Series Mark II
Enhanced performance high gain
sector antenna
Frequency: 27.35-28.5 GHz
Features
•
High Gain performance–21 dBi
•
Equivalent pattern performance in both
horizontal and vertical polarizations
•
Superior cross-pol rejection > 30 dB
•
Enhanced Azimuth Pattern improves adjacent
sector and adjacent cell interference
•
Enhanced Elevation Pattern with aggressive
null fill for uniform cell illumination
•
Complete Band Coverage–27.35-28.5 GHz
(other bands available upon request)
•
90° half power beamwidth
•
Side Entry waveguide facilitates integration of
external electronics
•
Optional mount includes elevation vernier for
downtilt of up to +/- 5° ; single or dual
antenna configurations available
Enhanced High Gain Sector Antenna
A
ndrew Broadband Communications Antennas (BCA)
offer an ideal solution to the complex and difficult problem
of providing optimum, cost-effective coverage for broad-
band communications. The Mark II sector antenna is the
newest member of the BCA product line, offering
enhanced, robust pattern performance and improved
cross polarization rejection. Covering the 27.35-28.5 GHz
band, this high gain antenna provides 90° of sector
coverage with a gain of 21 dBi.
The Mark II sector antenna provides robust, repeatable
broadband pattern performance. The azimuth pattern has
been enhanced to provide minimum response outside the
sector region, thereby:
•
Reducing sector-to-sector and inter-cell interference
•
Reducing pattern perturbations due to adjacent
structures
•
Improving side-by-side antenna isolation.
The elevation pattern has also been enhanced to improve
null fill and ensure uniform cell illumination. The
asymmetric pattern minimizes radiation above the horizon
where it is not needed.
Like the other products in the BCA family, the Mark II sec-
tor antenna offers identical patterns for vertical and hori-
zontal polarization and an integration-ready mechanical
design with a side entry waveguide port and space to
accommodate an electronic enclosure.
Other patterns/performance, or frequency bands, or
custom mechanical configurations tailored to meet your
specific requirements can be quoted upon request.
Contact your Andrew representative for details.
Elevation Pattern
– Andrew 90 Degree Sector High Gain Antenna
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
-22
-24
-26
-28
-30
-32
-34
-36
-38
-40
60
65
70
75
80
85
90
95
100
105
110
115
120
27.35-28.5
21
Horizontal or Vertical
(specify at time of order)
Polarization, discrimination, dB
>30
Amplitude flatness, dB
1
Measured over any 40 MHz segment
Azimuth angles -45° to +45°
Elevation angles 0° to -10°
Input power rating, Watts
50
VSWR max. (R.L., dB)
1.5 (14)
Input
WR28 cover flange
Mechanical Specifications
Survival Wind Velocity,
mi/h (km/h)
Operating temperature, °F (°C)
Size, approx. H x W x D, in (mm)
Color
Feed pressurized, maximum,
lb/in
2
(kPa)
Weight, lb (kg)
Part number
125 (200)
-40 to +140 (-40 to +60)
18 x 3.5 x 9 (457 x 89 x 229)
Gray
0.5 (3.5)
7.5 (3.4)
BCAH090A-280(*)-(**)
Frequency band, GHz
Gain, nominal, dBi
Polarization
Relative Power, dB
Electrical Specifications
Elevation Angle, deg
Azimuth Pattern
– Andrew 90 Degree Sector High Gain Antenna
* Specify H for Horizontal Polarization and V for Vertical Polarization.
** Specify Ø for no mount, S for single antenna mount, or D for dual antenna mount.
Azimuth Angle, deg
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Andrew Corporation
10500 W. 153rd Street
Orland Park, IL 60462
From North America:
Telephone: 1-800-255-1479
Fax: 1-800-349-5444
International:
Telephone: +1-708-873-2307
Fax: +1-708-349-5444
Andrew Customer Support Center
From North America:
1-800-255-1479
Fax: 1-800-349-5444
International:
+1-708-873-2307
Fax: +1-708-349-5444
Fax-On-Demand:
From North America: 1-800-861-1700
International: +1-708-873-3614
Fax-on-Line:
http://www.andrew.com
Visit us on the Internet at:
http://www.andrew.com
All designs, specifications, and availability of products and services presented in this bulletin are subject to change without notice.
Bulletin 10341 (10/99) Copyright © 1999 Andrew Corporation, Orland Park, IL 60462 USA
Printed in USA
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