Security, Technology

The Lombo lens model was first proposed by American mathematician Rudolf Karl Lunenberg in 1944, and its working principle is similar to the focusing principle of optical lenses, that is, using the refraction characteristics of multi-layer media, the low-gain, wide-beam electromagnetic wave signal of a single antenna unit is gathered into a high-gain narrow-beam electromagnetic wave signal. Because of the spherical structure, it is easier to make the Lombo lens model into a multi-beam antenna, and any point on the entire sphere of the Lombo lens can be the focus, so the beam can be pointed in any direction by controlling the position of the antenna feed on the sphere. At the same time, multiple feeders can be placed on the lens surface to realize multi-beam communication. Lombo lenses can also increase the gain of the entire antenna system by changing the width of the beam. There are five main advantages:

1.The focus, center of the circle, and plane wave direction are in a straight line (narrow beam with high gain).

2.The shape of the beam is the same at different positions, making it easier to achieve multiple beams.

3.Non-polarization characteristics, meet single polarization, dual polarization ±45/HV, circular polarization.

4.The beam drops steeply, the interference between the beams is small in multi-beam, the overlap band is narrow, and the capacity expansion ability is excellent in large-capacity scenarios.

5.With the same gain, the vertical wave width is about 3-4 times that of the plate antenna, effectively improving the coverage depth.

Our displayed a number of Longbo lens antennas at the 2023 MWC Shanghai Exhibition, so that the industry fully understood the technical characteristics and advantages of these antenna products: covering a long distance, can reduce the power consumption of the base station, reduce the number of base station site construction, can improve spectrum efficiency and communication quality, expand network capacity, improve user experience, etc.

the multi-beam Lobo lens antenna has participated in a large number of pilot tests in 27 provinces across the country, and has accumulated a lot of experience in 5G construction in addition to 4G blind repair and expansion scenarios, especially to provide a new choice for solving the problems encountered in 5G network construction such as insufficient bandwidth and capacity, and the existence of blind spots in some scenes. In terms of bandwidth, 5G 700MHz is the current hot spot of the industry, because the penetration of 700MHz band electromagnetic waves is very good, the coverage distance is far, and it is known as the golden band in the industry, but the band width and narrowness are also unavoidable shortboard. Through the spectrum multiplexing technology, the Lombo lens antenna can transmit two 700MHz beams in the 120° sector to solve the problem of 700MHz band width.

China Mobile and China Broadcasting and Television have determined the specific work plan to jointly build and share the 700MHz network, and the relevant equipment collection and construction work will be started in the near future. In the vast rural areas, the four operators will be expected to jointly share the 5G 700MHz network, and the Longbo lens antenna will be one of the best solutions for 700MHz network construction. In addition to 700MHz, Longbo lens antenna can not only be compatible with 900MHz, 1800MHz and FA frequency, to achieve 4G, 5G multi-frequency integration, but also support 2.1GHz and 3.5GHz multi-frequency integration, multi-frequency sharing, suitable for China Telecom and China Unicom 5G network construction. In terms of supplementing the coverage blind spots, Lombo lens antennas also have excellent characteristics that traditional antennas do not have. It is understood that the rectangular multi-beam Loomber lens antenna can change the antenna pattern from the original circular section coverage to a rectangle. In application scenarios such as sports stadiums, it can cut the venue space into multiple square shapes to achieve the splicing between rectangular electromagnetic beams and achieve seamless coverage.

If you use a traditional antenna, the electromagnetic beam is a Mosaic of circular and circular sections, always leaving the signal coverage of the blind area, but with a rectangular antenna can eliminate the blind area. Therefore, the application of Lombo lens antenna is very wide and flexible. Because of these characteristics, in 2022, the application of Lonbo lens antennas will be more extensive, and the prospect will be clearer. In the multi-beam antenna, the Longbo lens antenna of Fushun Tianji has realized the sharing technology of multi-frequency and multi-beam, further improving the cost performance of Longbo lens antenna. The principle is that the Lonbo lens antenna can split four beams in the horizontal plane, and each beam supports the antenna configuration of 8T8R, which can meet the requirements of coverage distance and capacity. Moreover, each beam 8T8R is also enough to apply the communication standard of MIMO, providing a new construction idea for 5G network construction. As a leader in wireless network technology, Fushun Tianji will continue to focus on the field of wireless communication, explore 5G application fields, and provide better and more solutions for the world’s wireless communication operators and equipment manufacturers.

Lonbo lens is used in various wireless applications such as communication, radar, navigation, etc. It has the advantages of light weight, high reflection efficiency, wide Angle response, etc. At the same time, it can have a variety of sizes to apply specific scenarios. Lonbo lens reflector is mainly used in air, ground, water and other fields to provide radar identification system. The use of Lobo lens reflector has the advantage that it can achieve omnidirectional radar reflection and is superior to the traditional Angle reflector in performance and size.At present, Longbo lens technology products have been extended to the military field.

Lombo lenses can be applied to the following scenarios in the military industry

1.stealth fighter

By installing the Lobo lens reflector, the stealth fighter can keep secret its own radar scattering characteristics during training, and facilitate the command center to evaluate the training effect. In the non-combat transition flight, the Lombo lens scattering is installed to facilitate the detection of civil aviation air traffic control radar and avoid accidents. Advanced stealth fighters such as the US Raptor, Lightning and China’s J20 have been installed, as shown in the figure. Products of this project can replace imports and break foreign technical constraints.

Advanced stealth aircraft retrofitted with Lobo lens product schematic

2.Training target aircraft

The figure shows the target target application for the training of the various services. According to the actual situation of training subjects, combined with the actual needs and characteristics of the sea, land and air, through the high-magnification of the radar scattering area of the Lombo lens reflector, low-cost target aircraft can be realized, especially the application of large/ultra-large target aircraft, saving the daily training cost.

3.Assumed goal

Using false targets to hide the real strategic and tactical intention is one of the important strategies in war. Figure 3 is to simulate the characteristics of the target that needs to be camouflaging with the scattering characteristics of the Lombo lens to deceive and induce enemy radar to protect the real target and reduce battlefield losses. For example, radar signals simulating specific targets such as tanks, missile launchers, submarines, aircraft, and ships are shown in the figure. The combination of true and false targets and Lombo lens can realize camouflage, crack multi-mode radar, infrared radar and other reconnaissance.

Dummy diagram

3.Target radar signal shielding

The picture shows the application idea of large Lombo lens scatterer, using the scattering characteristics of medium and large Lombo lens to cover the characteristics of the target that needs to be protected, so as to deceive and induce enemy radar, save the real target, and reduce battlefield losses. For example: Install Lobo lens reflectors on ships, tanks, aircraft and other moving targets to shield radar signals, making true and false targets mixed, interfering with radar reconnaissance, and improving the battlefield survival probability.

Target hiding diagram

4.induce

After the small missile is equipped with a dragon lens, it can simulate the radar characteristics of a large missile, which can interfere with or induce the enemy’s anti-missile device to start, effectively consume the number of enemy interceptor missiles, and carry out accurate strikes after the enemy has exhausted its firepower. Small UAs equipped with lens antennas simulate real fighter signals through the scattering surface, inducing the enemy to think that it is our fighter aircraft. Uas equipped with lenses can reduce casualties and damage costs of weapons and equipment, and protect the precision strike of our real fighter aircraft.

Guided missile diagram

Uav guidance diagram

5.Satellite communications and satellite tracking

At present, there is no enterprise in China to do multi-beam satellite communication with Longbo lens. Combined with the characteristics of light weight, multi-beam (multiple satellites communicate at the same time), stable communication and lower cost, Longbo lens can communicate with multiple satellites at the same time to avoid switching back and forth between different satellite signals and enhance the stability of communication, as shown in the figure. It can break the technical barriers to servo motors abroad, and compared with phased array satellite antennas, the cost is lower, the scanning Angle is wider, and the imports can be replaced.

Satellite communication and satellite tracking diagram

6.Buoys and other navigational areas

Traditional buoys have no radar reflection function or small launch, can not be found in time by ships, and can not adapt to bad weather by visual discovery. The buoy made of Longbo lens reflector is the same shape as the traditional buoy, but it has the radar reflection function, and is found by the radar beyond the visual range, which can be used at night or in bad weather such as rain and rain to reduce the occurrence of disasters. As shown in the figure.

Buoy beacons and other navigation areas