Multibeam MetalensesAntenna Solution for High-Capacity Scenarios The traffic service of mobile networks develops rapidly, and a large number of data applications emerge, such as webcasting, online short videos, online games, and so on. The problem of network capacity is becoming more and more important; therefore, solving the problem of network capacity in multi-user hotregions is still the key point to improving the user's perception.   Sigtenna antenna, using artificial electromagnetic material from a large-scale Metalenses antenna, agglomerates electromagnetic wave signals with low gain and wide beam into electromagnetic wave signals with high gain and narrow beam, and its principle is similar to the principle of optical lens focusing in that through the lens material, all the energy of the electromagnetic wave is more concentrated in the direction of the main lobe, compresses the sidelobe, and reduces the loss of cables and devices in the traditional antenna. So the efficiency of antenna radiation is higher, and signal quality is stronger.     Multi-beam antennas are combined with multiple narrow-beam antennas placed within a 120° coverage angle in order to help operators save space, reduce infrastructure costs, and speed up deployment. Functionally, multibeam antennas use spectrum multiplexing technology to enhance the density of their existing capacity. It is an ideal antenna solution for high-flow capacity areas and is well-suited for sector splitting and outdoor stadium applications where multiple users congregate. Each of these solutions contributes to a higher return on investment (ROI). For example, by using four-beam antennas, operators can increase the capacity of existing stations by almost three times or more, which provides an alternative choice for manufacturers when there isn’t a new station and optimizes station costs.

      

 

Radiation pattern of base station in 3-sector of conventional antenna          

Radiation pattern of base station in 3 sectors of a four-beam antenna

 

Horizontal 36 degree beamwidth dual beam antenna 

Horizontal 15 degree beamwidth 4 beam antenna

Horizontal 11 degree beamwidth 6 beam antenna
 

                                                                       

 

Radiation patterns of various multibeam antennas

 

 Metalenses antenna has good isolation between port, steep roll-off at the edge on the pattern, low horizontal sidelobe, and small interference between beams. When the beam electrical level of a traditional multi-beam antenna includes crossing the crossover point by 5°, the electrical level of roll-off should not be greater than -15dB, that is, -15dB@5°. When the multibeam electrical level of Metalenses antenna crosses the crossover point 0.5°, the electrical level of roll-off is greater than -15dB, that is, -15dB@0.5°. Because the beam overlap band is narrow, the probability of users falling into the overlap band is low, which greatly improves the RF efficiency.

 

                                                                                                               

Conventional Multibeam Panel Antenna                                                      Muti-beam Metalenses antenna         

 

Each beam gain of Metalenses antenna is 2 times higher than the traditional antenna, the vertical beam width is 2 times of the traditional antenna, the coverage angle range is bigger in the vertical radiating plane from near to far , and with the horizontal multi-beam, the coverage area is much larger than the traditional antenna. Each beam can realize independent ESC down tilt. Therefore, the coverage area can be precisely controlled with less trans-area interference.

Sigtenna Muti-beam Metalenses antenna

4-PORT 2-BEAM  
6-PORT 3-BEAM
8-PORT 4-BEAM
32-PORT 4-BEAM

                                                                            

 

Scenario Applications
Emergency communications

 

Stadium coverage

Coverage of dense cell

Campus coverage

Application Case 1:

 

Henan Telecom Tongxu Health School with Four-beam Metalenses antenna application. The school has a large number of users, four base stations have been constructed around the school, the cell with dormitories and canteens had already overloaded operation, and network congestion was serious. The students reflected the signal could be received but could not watch video and surf the web page smoothly, so the rate of complaints was always high. After using Sigtenna's four-beam independent ESC Metalenses antenna, different electric down tilt angle is set for each target coverage area for accurate coverage. The service volume is increased by nearly 2 times, the user experience rate is increased by 1 time, and the channel occupancy rate is reduced by 10pp.

 

 

 

                                                      

 

 

Precise coverage using Metalensesantenna with four-beam ESC
ESC down tilt	56小区 No.56 cell	11小区 No.11 cell	54小区 No.54 cell	10小区 No.10 cell
调整度数Adjustment degree	10°	8°	6°	9°
Reason for adjustment	Coverage of canteenand boys' dormitory areas	Coverage of male dormitories	Covering the playground	Coverage of female dormitories

 

                                   

 

 

Comparison of changes in daily servicevolume before and after replacement
Core parameters	Before replacement	Afterreplacement	growth rate
Totalservicetraffic (GB)	299.94	832.45	177.54%
Downlink user experience rate (Mbps)	24.18	53.27	120.33%
Average downlinkPRB utilization	38%	28%	-26.81%

 

 

Application Case 2:

 

Weihai QianlishanhaiSea Beach Music Festival  Innovative Applicationof Capacity Assurance: China Weihai QianlishanhaiSea Beach Music Festival is a large-scale open-air live music festival brand,and unique to Weihai. The festival integrates elements of seaside, seafoodand highway cultur. As a large-scale beach music festival in Weihai, the event organizer invitedfamous bands and musicians such as Universal Youth Hostel, Old Wolf, Wild Child, etc. to bring a wonderful music feast to the audience. During the event, the personnel was highly intensive and the peak users on site exceeded 10,000, which hadhigh demands on the quality of communication network at the event site.   The total area of the event is about 98,000 square meters, and in order to allow all the people to enjoy a high-quality network experience, Weihai Unicominsure 4/5Gnetwork coverageon the event witha full range and dead-angle, and it is the first time to use Metalenses antennato solve the sudden, high-growth capacity needs. ThisMetalensesantenna mainly enhances the main stage standing viewing area where people flow is concentrated, the planning scheme is as follows:

 

General layout of the event

 

                 

              Main Stage 5G Planning Map

                                         

 

Main Stage 4G Planning Map

 

5G is planned to have 3.5G as the main bearer frequency band, and 2 pairs of 64T64RAAU and 1 pair of 32-port four-beam Metalenses antennas are installed on site with a total of 6 cells. 4G is planned to have 1.8G and 2.1G as the main bearer frequency bands, and 2 pairs of 8-port four-beam Metalenses antennas are installed on site.

 The main technical parameters of the Metalenses antenna:

 

 

Name	8-port four-beam ESC antenna		32-portFour-Beam 3.5G 21dBi MetalenseDirectional Antenna
Operating frequency band (MHz)	1710-1880MHz	1920-2170MHz	3400-3600MHz
Polarization	Dual, slant ±45°
Gain (dBi)	≥19.5	≥20	≥21
Horizontal plane -10dB beam width(º)	≥15	≥13.5	≥15
Vertical plane -10dB beam width(º)	≥15	≥13.5	≥11
Electrical down tilt	2-12°		0-6°
RCU port	AISG2.0		AISG2.0/3
Mechanical Parameters	Specification
Connector type/location	8 X Din Female / Bottom		24 X 4.3-10 Female / Bottom

 

 

                                                      

 

The  population during the music festival was over 10,000 people. Depending on the weather, the evenings were at the peak of the crowd.

 

                               

 

Communications vehicle 5G cell access to the number of users and traffic situation

 

Absorption Traffic Changes in Communication car 5G Cell

Metalense antenna

Changes in the number of access users in communication car 5 G cell

 

 Communication car 4G cell (2100M) access to the number of users and traffic situation

Changes in traffic absorption in communication car 4G cells (2100M)

Emergency Communications car of Metalense antenna

 Change in the number of users accessing to 4G cells (2100M) in communication car

 

the number of  users and traffic situation on Stage 4G cell (1800M)  

 

 the changes of traffic absorption on Stage 4G cell (1800M)

 

 

Metalenses antenna of Main Stage 

Change in the number of users accessing the stage 4G cell (1800M) 

 

Through the testing of the site after using, it is found that the Metalenses antenna used this time has the special type of steep drop beam, small interference of adjacent beams and high user download rate, which can open 4 same cells on the same antenna. This antenna has stable directivity for the coverage area, and can accurately coverage by cutting block, which is convenient for on-site optimization.