Specification of Requirements
Request for tenders for antenna systems for Aalborg University
Side 1
1.
Introduction
The Department of Electronic Systems represents one of the areas of research of Aalborg
University (AAU), recognised at a high international level. The antenna research area, in
particular, has been successful for many years.
AAU has decided to strengthen the research area with new facilities by establishing a new
shielded anechoic chamber with facilities to open roof and gable in order to perform antenna measurements from drones and satellites.
The future prospect is to establish an arc, with a radius of 100 m, from which antenna
measurements can be performed.
A new building is under construction, and the shielded rooms with absorbers will be
mounted in the spring of 2017.
The scope of this tender is to establish a measurement system for antennas and Over The
Air (OTA) test of wireless devices.
2.
The facility
The facility consist of an instrument room (marked with green) and two radio anechoic
chambers:

A large room 10 m x 10 m x 14 m (Antenna room) marked with Red

A small chamber 5 m x 5 m x 5 m (OTA Chamber) marked with Blue
Side 2
Nor t h
14m
10m
5m
In the Antenna room, the basic measurement capabilities are:

Long range antenna measurement of about 11 m.

Gantry arm measurement with a turntable.

Open chamber measurements (not considered here).
In the OTA chamber the basic measurement capabilities are:

Antenna measurements with a vertical ring of probe antennas.

SISO OTA measurements.

MIMO OTA measurements with a horizontal ring of probe antennas.
Address of the construction site is:
Selma Lagerløfs Vej 312
9220 Aalborg Ø
Denmark
Side 3
3.
3.1
The Antenna room
General
The supplier will be fully responsible for the design of the deliverables.
All the drawings provided of the Antenna room are sketches only. Drawings of the building
show the inner room boundaries for the shielding and absorbers, and these drawings are
provided for the supplier’s further use.
When the solution has been completed, the supplier must prepare and submit working
drawings for approval.
The supplier must ensure that the construction site is in order during the workday, both
inside and outside, and the supplier must clean up after its own work by the end of the
day.
The supplier must bring the scaffolding/lifts necessary for its own work.
As part of the project, the supplier must provide the Contracting Entity with operation and
maintenance information on the project delivered.
The supplier must take part in necessary meetings to define project details.
The task is to implement a complete antenna measurement facility.
Everything must be supplied with full technical documentation, including drivers and computer interface.
3.2
Existing chamber
The chamber is shielded and equipped with absorbers. There is a raised floor, 2m in
height.
A turntable Ø1m with a lift, capable of lifting 3500kg (car) 4,5m above the raised floor.
The turntable is Orbit AL-2763 with an AL-4189 controller. The turntable is placed ca. 5.3
m from the probe wall (south wall), so it is not centered (North-south) in the room.
Drawings will be provided later.
Side 4
3.3
Gantry arm or Arc scanner
The gantry arm or arc scanner will, in combination with the existing turntable, be used
for spherical near- and far-field antenna measurements. The frequency range is preferably
500 MHz to 110 GHz or as high as possible. Please specify options.
The DUT can e.g. be a car, a person, or small devices as phantoms and single antennas.
The DUT height is 5m over the raised floor.
The supplier must install a gantry arm or arc scanner for moving the probe antenna on a
circular path. The angular range and radius of this path should be as large as possible
within the physical limitations, of the lifting device.
It is suggested to place the arm diagonally in the room, in order to hide it for the Long
Range setup or to find another means to hide the arm, when the Long range is in use.
The delivery shall include a full operational system:

Gantry arm or arc scanner covered with absorbers where relevant

Adjustment capabilities to align the axes to the axis of the turntable as required for
spherical near-field measurements

A mast for small devices, mounted on the turntable, and a mast with a chair for person, mounted on the turntable, including test person security, and access.
3.4

Low loss cables on the arm to the probe suited for near field measurements.

Probes for two polarizations; the entire frequency span must be included
Long range
In this setup, a probe antenna is mounted at the end wall (south) and a pedestal for
moving a DUT at the other end.
Side 5
14m
North
DUT
10m
5m
2m
3.5
The Pedestal
The pedestal shall be used with the long range for spherical near- and far-field measurements, with a roll over azimuth set-up:

Height of DUT: 5m over raised floor

Load 500kg. Not a sharp limit, if a more convenient solution is attractive with less
load, please specify.

Axes: Roll over azimuth, elevation adjustment for compensating heavy load.

XY- table for DUT/mast preferably motorized. 1m longitudinal (roll-direction) movement and transversal (perpendicular to roll) movement as required to ensure alignment of the azimuth and roll axes.

Precisions suited for near field measurements, up to 110GHz.

Rotary joints on roll and azimuth axes, preferable to 67GHz, dual channel if possible.

Slip rings, for control (TTL) and user power (230V)
If preferred it is possible to modify an existing Orbit Pedestal.
3.6
Probe
Probes for both polarizations, entire frequency span.
Side 6
Mounted on a linear sledge.
Motorized with manual control.
Space for signal generator, mixer etc. behind/under probe.
Means for alignment of probe pointing direction.
3.7
Cabling
From Instrument room to two measurements systems.
3.8
Laser system
For aligning the DUT, in the two quiet zones.
Tools for alignment of the positioner axes for both set-up’s.
3.9
CCTV
Camera as dome, pan, tilt and zoom.
Cameras must be colour and minimum 2MP.
Cable of covering the two measurement quiet zones.
Recording must be for at least 8-10 pictures/sec.
Monitor and control in the instrument room.
3.10
Software
For both systems, Gantry arm and Long range:

Software for position control, data collection, calibration etc.

Software for near- to far-field transformation

Antenna measuring software with standard measurements of antennas as:
o
Radiation pattern
o
Efficiency
o
Gain
o
Directivity
o
Polarization
Side 7
o
etc.
The software should be modular with well-defined interfaces, so it is possible to make
modifications.
4.
Measurement system for the OTA chamber
4.1
General
The task is to implement a complete measurement facility.
Everything must be supplied with full technical documentation, including drivers and computer interface.
The chamber is equipped with absorbers.
4.2
Multi probe antenna measurement system.
Frequency range minimum 400 MHz to 6 GHz, please specify extension possibilities.
A vertical ring of multi probes as large as possible in the 5x5x5m chamber. Please specify
the possibilities for number of probes.
Included shall be:

Mast for small devices.

Mast for Phantom head/torso, 100kg.

Mast with chair for person.

Oversampling, Goniometer Positioner.

Calibrating system.

Access to the DUT.
4.3
Software
The software should be modular with well-defined interfaces, so it is possible to make
modifications.

Software for position control, data collection, calibration etc.

Software for near- to far-field transformation

Antenna measuring software with standard measurements of antennas as:
Side 8
4.4
o
Radiation pattern
o
Efficiency
o
Gain
o
Directivity
o
Polarization etc.
SISO OTA measurements
Active measurement system, with CMU200 and CMW500 (already available).
Possibility for other vendors.
Systems:
 GSM
 UMTS
 BT
 LTE
 WiFi
Frequency range minimum 400 MHz to 6 GHz.
Possible CTIA compliant Over-The-Air (OTA) Testing for Wireless Devices.
TRP, TIS, EIRP and EIS.
4.5
MIMO OTA measurements
A horizontal ring of probes, as large as possible in the 5x5x5m chamber.
Please specify the possibilities for amount of probes.
Frequency range minimum 400 MHz to 6 GHz, please specify extension possibilities.
Systems:

LTE

Wifi
Included shall be:

Switch and amplifier system

Calibrating system
Side 9
Without channel emulator and call box. (CMW500 available).
Including drivers for this and possible other vendors.
4.6
OTA calibrating pedestal
For verifying quiets zones and channel models.
x-y-z movement. 1m.
Simultaneous movement of all axes.
4.7
Software
Software for setting up calls and perform measurements.
Making calibration.
Using CMU200 and CMW500 (already available).
The software should be modular with well-defined interfaces, so it is possible to make
modifications.
4.8
Cabling
From Instrument room to Probe and the DUT.
4.9
Laser system
For aligning the DUT, in the quiet zone.
4.10
CCTV
Camera as dome, pan, tilt and zoom.
Cameras must be colour and minimum 2MP.
Cable of covering the two measurement quiet zones.
Recording must be for at least 8-10 pictures/sec.
Monitor and control in the instrument room.
Side 10