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Invax System Technology Corp.
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Antennas¢xCoaxial Connectors¢xPOGO Connectors¢xCircular connectors¢xRJ11/RJ45 Modular Jack¢xCable Assembly

Antenna Type

Rubber Duck Dipole Type

Magnetic & Suck Cap

 Base Extender Type

Omni-directional High
  Gain Antennas

External Magnetic Mount and Suck Cap Antenna Basrs

GPS Antennas
Patch Internal Antennas
Extendable Antennas
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Antenna Application
Wireless Lan Antenna

¡ERubber Duck Type

¡EMulti-Antennas Type

¡EOutdoor Dipole Type

¡EFlat Type

¡ECeiling Mount Type

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Bluetooth Antenna

DVB-T Antenna

Extender Antenna

PC/Notebook WLAN
Antenna
 

Mobile Phone Antenna

GSM Antenna

Telematic Antenna

RFID

Active GPS Antenna

Wireless Lan Antenna

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Multi-Antennas Type

Introduction to MIMO Antenna System Design

Multiple-input multiple-output (MIMO) wireless technology uses multiple antennas at the transmitter and receiver to produce significant capacity gains over single-input single-output (SISO) systems using the same bandwidth and transmit power. It has been shown that the capacity of a MIMO system increases linearly with the number of antennas in the presence of a scattering-rich environment. This will ensure that the signals at the antennas in the array are sufficiently uncorrelated with each other.This is where antenna design comes in for MIMO systems.
The primary aim of MIMO antenna design is to reduce correlation between received signals by exploiting various forms of diversity that arise due to the presence of multiple antennas, like space diversity (spacing antennas far apart), pattern diversity (using antennas with different or orthogonal radiation patterns), polarization diversity (using antennas with different polarizations) etc. These 3 forms of diversity are pictorially represented as shown.

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Multiuser MIMO for Broadband Wireless

Communication Systems

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Multiple-input multiple-output (MIMO) is a promising technology for future wireless communication systems. By exploiting the multi-dimensional wireless channel created by multiple transmit and receive antennas, MIMO systems significantly increase the channel capacity and link robustness of wireless communication, and have been widely adopted in many future wireless communication standards (e.g., WiMAX, 3GPP LTE, etc).

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In a multiuser MIMO (MU-MIMO) system, a single base station transmits to multiple mobile stations simultaneously over the same frequency band, thereby substantially increasing the sum data-rate and reducing the latency of mobile users compared to other multi-access (MAC) schemes such as conventional TDMA. The gains achievable by the introduction of the MU-MIMO broadcast channel in

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 wireless systems are yet to be demonstrated in practice, and are forecast to play a major role in the increase of spectral efficiency of future wireless networks. Non-linear dirty-paper-coding process required to achieve the sum-capacity of the MU-MIMO channel is very difficult to implement in practical systems. In addition, interuser interference needs to be properly cancelled at the transmitter to enable low-complexity and energy-efficient mobile terminals.

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AN2400-691

Technical Specification

Frequency Range : 2400 ~ 2500 MHz
V.S.W.R. : <= 2.0
Antenna Gain : 2 dBi
Pattern : Omni-directional
Connector : SMA Male Reverse

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AN2400-692

Technical Specification

Frequency Range : 2400 ~ 2500 MHz
V.S.W.R. : <= 2.0
Antenna Gain : 2 dBi
Pattern : Omni-directional
Connector : SMA Male Reverse

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AN2400-693

Technical Specification

Frequency Range : 2400 ~ 2500 MHz
V.S.W.R. : <= 2.0
Antenna Gain : 2 dBi
Pattern : Omni-directional
Connector : SMA Male Reverse

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AN2400-90

Technical Specification

Frequency Range : 2400 ~ 2500 MHz
V.S.W.R. : <= 2.0
Antenna Gain : 3 dBi
Pattern : Omni-directional
Connector : SMA Male Reverse

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AN2400-97

Technical Specification

Frequency Range : 2400 ~ 2500 MHz
V.S.W.R. : <= 2.0
Antenna Gain : 4 dBi
Pattern : Omni-directional
Connector : SMA Male Revere
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