CMM200A [TAOGLAS]
5-6GHz Passive Massive MIMO Modular Panel System;
| 型号： | CMM200A |
| 厂家： | 
Taoglas |
| 描述： | 5-6GHz Passive Massive MIMO Modular Panel System |
| 文件： | 总15页 (文件大小：1496K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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DRAFT SPECIFICATION
PATENT PENDING
CMM200.A
Part No:
Product Name:
Adaptrix 5
5-6GHz Passive Massive MIMO Modular Panel System
DSP-17-08-005/A/JD
Page 1 of 15
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1. INTRODUCTION
The patent pending CMM200 Massive MIMO Modular Passive Panel is the preferred testbed for
Massive MIMO research, allowing the radio researcher ease and flexibility in assembling an array
of variable size and shape which always has constant array spacing for minimization of grating
lobes.
The modules attach to each other and to ground plane extensions with a proprietary fastening
design that enables quick assembly without threaded fasteners. When attached, a module-module
or module-extension connection has excellent ground plane continuity due to a conductive
elastomeric gasket around the periphery that ensures optimal field pattern from each element.
Each module has 16 patch antenna elements, each having a dual polarization with very high cross
polarization isolation and low mutual coupling between adjacent elements.
Massive MIMO reciprocity calibration is accomplished easily with the modules, because each
module has a network of couplers that meanders through the antenna PCB, coupling energy off of
each of the 2x16 radiating elements, and connecting to a common RF calibration (CAL) port. There
is also an additional port in this calibration network for daisy chaining the calibration line to other
modules (CAL_DAISY) which can permit a single connection to the reference radio used for
calibration.
The radiating elements are high-efficiency patch antennas which are soldered to the antenna PCB
for the highest reliability and performance. These exhibit good return loss and field pattern over
a broad bandwidth, enabling freedom of choice in the research frequency used.
The modules have an integrated radome made of high-impact UV stabilized plastic. The radome
is sealed to the housing with an O-ring which supports IP55 immersion rating for outdoor
operation.
Each module has on the back side a set of 34 SMA connectors for the 32 antenna ports and two
reciprocity calibration ports. The modules can be delivered pre-assembled with cables for
increased ease of use.
DSP-17-08-005/A/JD
Page 2 of 15
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2.SPECIFICATION
ELECTRICAL
Standard
Frequency (MHz)
5500-5790
2.0:1
-10
5790-5990
5990-6250
2.0:1
-10
Max VSWR*
1.5:1
Max Return Loss (dB)*
-14
Peak Gain (dBi)*
6.5
7
6.5
Efficiency (%)*
75
80
75
Average Gain (dB)*
-1.25
±45°
-1
-1.25
±45°
3dB beamwidth*
±45°
Field pattern
Endfire
Isolation, H-V same element*
Isloation, V-V horz offset, or H-H vert offset, dB*
Isolation, V-V vert offset, or H-H horz offset*
Coupling, any element to CAL port, dB*
Insertion loss, CAL port to CAL_DAISY port*
Return Loss, CAL or CAL_DAISY port*
Max Input Power (Watts)
Polarization
-20 typ
-17 max
-19 max
-27 to -38
-3.5dB max
-20dB
-30 typ
-20 typ
-17 max
-20 max
-27 to -38
3.5dB max
-20dB
-17 max
-20 max
-27 to -38
3.5dB max
-20dB
5
Dual linear with H and V polarization
50 Ohms
Impedance (Ohms)
MECHANICAL
Arraying Dimensions (mm)
Max Dimensions (mm)
Material
56x224x32 mm
61x229x32 mm
Aluminum and Hi-Impact ABS
SMA-F for each of 32 antenna ports and 2 calibration ports
ENVIRONMENTAL
Connector
Operation Temperature
Storage Temperature
-40°C to 85°C
-40°C to 85°C
Relative Humidity
RoHs Compliant
40% to 95%
Yes
* Measured with loads on all other ports and ground extensions installed around periphery.
DSP-17-08-005/A/JD
Page 3 of 15
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3.DETAILED DESCRIPTION
3.1 Overview
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The CMM200 is a 2x8-element dual-polarization antenna sub-array module which can be used to
construct the passive radiator section of a Massive MIMO system capable of operating in the 5-
6GHz band. The CMM200 will maintain a constant spacing between elements when attached to
other CMM200 modules using its proprietary threadless fastening scheme. Each module can be
mated with another module on either the long or short side. This property allows for a large
number of array configurations to be easily realized.
Upon mating, conductive O-rings located around the perimeter of the modules near the antenna
end make intimate contact with O-rings from the mating module, implementing a large ground
plane automatically as a result of fastening the two modules together. This ground plane can be
extended with the ground plane extenstions (GPEs) included with the research kit, which have the
same fastening pattern and dimensions as the modules. The GPEs have 4 threaded bosses evenly
spaced at twice the lattice spacing constant (2x28mm=56mm) which allows for fastening to
infrastructure.
The ground plane formation due to making up a larger array supports a uniform endfire pattern
for each radiating element, since the elements are dual-polarization patches having 3dB-
beamwidth of ±45°. This arrangement allows for a high front-to-back ratio of at least 15dB,
allowing for frequency reuse in other sectors.
These salient features allow for a large number of possible array configurations and field scenarios
to be implemented in terms of array configuration, site location and the resultant implications on
beamforming and propagation properties.
The CMM200 passive version has 34 SMA connectors on the back side of the module for each of
the 32 antenna ports (16 horizontal, 16 vertical), as well as 2 connectors for calibration and
calibration daisy chaining. The connectors can be delivered terminated with cable upon request
for ease of use.
The CAL port has a 28-35dB coupling and network loss between itself and each of the 32
addressable radiating element ports using a meandering coupling network. The CAL and CAL_DSY
ports allow for the transceivers (which are attached to each SMA port) for each antenna to be
coupled to a reference transceiver (on the CAL port) for TDD reciprocity calibration. This network
does not increase coupling or crosstalk between elements enough to be any system impairment.
The CAL_DSY port has a 3dB insertion loss relative to the CAL port and is used to daisy chain other
modules.
DSP-17-08-005/A/JD
Page 4 of 15
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3.2 Connector Assignment
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Below figure illustrates the numbering guide for the module ports. Numbering is as seen from the
back side of the device.
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The Taoglas CMM200
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DSP-17-08-005/A/JD
Page 5 of 15
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4.ANTENNA PARAMETERS
4.1. ANTENNA RETURN LOSS
AntennaꢀReturnꢀLossꢀTypical
0
-5
5.5
5.6
5.7
5.8
5.9
6
6.1
6.2
6.3
6.4
6.5
-10
-15
-20
-25
-30
6VꢀRL
6HꢀRL
4.2. MUTUAL COUPLINGꢀ
AntennaꢀtoꢀAntennaꢀIsolationꢀTypical
0
-5
5.5
5.6
5.7
5.8
5.9
6
6.1
6.2
6.3
6.4
6.5
-10
-15
-20
-25
-30
-35
-40
6V6HꢀISO
6V8VꢀISO
6H4HꢀISO
6H8HꢀISO
6V8HꢀISO
DSP-17-08-005/A/JD
Page 6 of 15
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4.3. CALIBRATION PORTꢀ
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CalibrationꢀCouplingꢀTypical
-20
-22
-24
-26
-28
-30
-32
-34
-36
5.5
5.6
5.7
5.8
5.9
6
6.1
6.2
6.3
6.4
6.5
6VꢀCPL
6HꢀCPL
CalibrationꢀPortꢀReturnꢀLoss
0
-5
5.5
5.6
5.7
5.8
5.9
6
6.1
6.2
6.3
6.4
6.5
-10
-15
-20
-25
-30
CALꢀRL
CALꢀDAISYꢀRL
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DSP-17-08-005/A/JD
Page 7 of 15
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CalibrationꢀtoꢀCalibrationꢀDaisyꢀInsertionꢀLoss
-3
-3.1
-3.2
-3.3
-3.4
-3.5
-3.6
-3.7
-3.8
-3.9
-4
5.5
5.6
5.7
5.8
5.9
6
6.1
6.2
6.3
6.4
6.5
4.4. Efficiency
DSP-17-08-005/A/JD
Page 8 of 15
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4.5. Peak Gain
4.6. Average Gain
DSP-17-08-005/A/JD
Page 9 of 15
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5. Radiation Pattern
DSP-17-08-005/A/JD
Page 10 of 15
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6Hꢀ@5.775ꢀGHzꢀ ꢀ
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6Hꢀ@5.975ꢀGHzꢀ
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6Vꢀ@5.775ꢀGHzꢀ ꢀ
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6Vꢀ@5.975ꢀGHzꢀ
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DSP-17-08-005/A/JD
Page 11 of 15
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. MECHANICAL DRAWING (Unit: mm)
6.1 Antenna Aluminum Panel
DSP-17-08-005/A/JD
Page 12 of 15
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6.2 Ground Plane Extension
DSP-17-08-005/A/JD
Page 13 of 15
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6.3 Antenna Panels and Ground Plane Extensions Assembly
DSP-17-08-005/A/JD
Page 14 of 15
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Taoglasꢀmakesꢀnoꢀwarrantiesꢀbasedꢀonꢀtheꢀaccuracyꢀorꢀcompletenessꢀofꢀtheꢀcontentsꢀofꢀthisꢀdocumentꢀandꢀreservesꢀtheꢀrightꢀtoꢀmakeꢀchangesꢀtoꢀ
specificationsꢀandꢀproductꢀdescriptionsꢀatꢀanyꢀtimeꢀwithoutꢀnotice.ꢀTaoglasꢀreservesꢀallꢀrightsꢀtoꢀthisꢀdocumentꢀandꢀtheꢀinformationꢀcontainedꢀ
herein.ꢀꢀ
Reproduction,ꢀuseꢀorꢀdisclosureꢀtoꢀthirdꢀpartiesꢀwithoutꢀexpressꢀpermissionꢀisꢀstrictlyꢀprohibited.ꢀꢀ
ꢀ
Copyrightꢀ©ꢀTaoglasꢀLtd.ꢀ
DSP-17-08-005/A/JD
Page 15 of 15
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