We introduced the next generation communication standard 5G has various possibilities but recently we are seeking collaboration between automobile and communication among them.
In Japan, Toyota Motor establishes a new company in cooperation with Telecommunications Carrier Softbank and is trying to realize Maas (Mobile as a Service) by mutual business collaboration.
This aim is to sell services that can be realized by a mobile called a car rather than selling a car alone. In addition, it is clear that electric vehicles and hybrid vehicles currently being sold by Tesla Motors etc. will continue to evolve, and the cars themselves will evolve from the framework of machines as the former combustion engine, power generation, storage, car navigation, It is a well-known fact that it converts from an anti-collision automatic brake to an automatic operation in the future. Crystal-related products sold at our company are also used as automobile parts than before. In order to be used as a signal source in the automobile, the crystal must pass a variety of provisions. Especially for environmental temperature, operation guarantee in the high-temperature range is necessary to make it possible to use near the engine and motor. This time we are introducing high-temperature guarantee type crystal products conforming to automotive standard AEC-Q200. In addition to the industrial temperature range of -40 ° C to + 85 ° C, we are selling quartz units and crystal oscillators that guarantee operation at -40 ° C to + 105 ° C or -40 ° C to + 125 ° C. The lineup will be as follows. We realize high-precision temperature characteristics with high frequency which is our characteristic.
Nowadays, in the telecommunications industry, development is progressing toward the deployment of next-generation communication 5G. The news such as Apple ‘s IPhoneXs series recently launched and Huawei’ s 5 G compatible folding smartphone next spring release forecasts are broadcasting the telecommunications industry. Currently, it is expected that communication using 4G and high-speed LTE will be the main in technology development in the pre-stage to become full 5G, but communication terminals at this stage are DSDS (Dual Sim Dual Standby) It is also expected that it will respond to next-generation high-speed communication by switching the communication network depending on the situation. Currently, we are developing and marketing products for optical communication and RF modules, which are also used in current 4G and LTE communication networks, as the first stage effort towards this next-generation communication standard 5G.
This time we are introducing a high-frequency fundamental mode crystal resonator for a filter. It is essential for optical line communication and RF module to extract the necessary signal from the clock signal source passed through the filter with narrow passband width in order to reduce noise and take out a sharper signal. Also, since the frequency used is increased, it is necessary to have a filter of the characteristic located between the filter using the SAW device and the MCF. However, with the SAW filter, it is difficult to narrow the pass bandwidth, and at present, the MCF is difficult to handle this high frequency. Therefore, our company offers a high-frequency crystal resonator for Discrete type Monolithic Crystal Filter being developed by many customers. In general, MCF has stable frequency characteristics with respect to temperature, low loss, high cutoff characteristics, and excellent aging characteristics compared with other filters, and it is effectively used for the narrowband bandpass filter. In addition, by increasing the number of crystals to use (increasing the number of poles), sharpness in the attenuation region increases, making it possible to manufacture narrowband bandpass filters. In order to manufacture such an excellent MCF, a high frequency and high precision crystal resonator using a fundamental mode are required. We mainly offer UM-1 high-frequency fundamental crystal resonator for 4 to 6 pole Discrete type Monolithic Crystal Filter. Our UM-1 high-frequency fundamental crystal quartz resonator is inspecting all waveform characteristics in pre-shipment inspection and contributes to Discrete MCF’s Group Delay reduction.
Currently, each telecommunications field company is developing products to realize next-generation mobile communication 5G. This next generation mobile communication standard 5G has the following three features. 1. High-speed large capacity 2. Low latency 3. Simultaneous connection of multiple terminals We will develop a communication network that will satisfy all of these and start services sequentially. It is not yet decided how to operate with respect to simultaneous multiple terminal connections. So far Japan has been proceeding with this roadmap to develop this 5G facility targeting the time of the 2020 Tokyo Olympic Games. However, at the Mobile World Congress (MWC) held in Spain (Madrid) in February 2018, it was announced that mobile communication carriers and communication equipment manufacturers in each country will start commercialization of 5 G communication in 2019, It is necessary to aim at the commercialization of the same operators in various regions including the company ahead of schedule. Commercialization experiments are planned in the United States and China in 2019 and commercialization experiment in Europe in this year from 2018. The goal of the commercial launch in 2020 in Japan has not changed so far in Japan, but it is also fully conceivable that the start of services will be accelerated due to the influence of other countries.
Changes and improvements in such communication standards will affect not only changes in fields that are limited to mobile communications like 3G to 4G, but also to all devices that can be connected by IOT. As a simple example, it is expected to be utilized in the following fields.
Video distribution (4K, 8K) Medical (remote control) Automobile (automatic driving control) Robot control (remote control) Security service (remote monitoring control) Amusement (video, VR experience)
High speed large capacity communication
High-speed large-capacity communication at 5 G is a communication that can communicate at 20 Gbps at the maximum, about 25 times the maximum of 800 Mbps currently used at 4 G to enable this high-speed and large capacity communication, used in Japan a lot Compared to LTE (3.9 G, currently being interpreted as 4 G in Japan) it is necessary to enable about 100 to 1000 times communication. Therefore, while using the current 3G and 4G lines, a new communication band: 6 GHz band is used. This will use higher frequencies than the 5 GHz band used in 2.4 GHz, 11 a, 11 b of the conventional WiFi standard 11 g, 11 b. This 11ac is practically used at a communication speed of 6.9 Gbps, which is about 11.5 times higher than the conventional 11n (the standard that can be used at both 2.4 GHz and 5 GHz). If you are using a Wifi router at home and you are communicating with the communication standard 11ac, 11ac’s 5 GHz band communication is used in many devices 2.4 GHz band from other devices Although there is no interference, the communication sensitivity of WiFi leaves the WiFi antenna and there is an obstacle directly between the antenna and the mobile terminal, or there is a case that I felt a decrease in communication sensitivity occurring when moving to another room I think. Although increasing the communication frequency keeps straightforwardness, it is impossible to ignore the influence of obstacles and attenuation of communication capacity due to distance. In order to solve this problem, it is necessary to improve the antenna technology (directivity, beam division multiplexing, use of millimeter waves) to linearly connect the antenna and each mobile terminal, and to increase the number of antenna elements (more than 100 Antenna element), it is necessary to increase the number of base stations themselves, in addition to increasing the antenna controlled by the current one base station to more than 100.
The significant increase in the number of base stations
Although the range covered by the base station at 4 G is about 1 km in radius, the interval between the base stations is calculated to be about 100 m to 200 m in the realization of 5 G, and the base station greatly increases (about 4 to 18 times as calculated) Is required. Regarding the substantial increase in base stations, whether each type of mobile communication provider will set themselves as before or as common as Korea 4 companies (KT & LGU + & SK Telecom & SK broadband) set up a common base station and mutual use It is currently under consideration in many countries about whether to do.
It is decided that the network delay standard in 5G will be 1.0ms or less. This is a remarkable reduction of delays in current mobile terminals, taking into consideration applications to medical practices, automated driving techniques of automobiles, remote control of robots, etc. Even in areas where it has been difficult to handle with mobile communication up to 4G, it will lead to technological innovation to many more fields by using this 5G network. However, in the case of communicating in the order of the conventional terminal, antenna (base station), optical line, server, optical line, antenna (base station) and terminal, the network delay time is 0.5 ms, there is a possibility that a delay of 1.0 ms or more may occur, so communication in the same area will be handled by completing communication by placing a server in the antenna (base station) I will.
Simultaneous connection of multiple terminals
Even when there are many terminals within a certain range, it is necessary to create a mechanism that does not cause communication speed, capacity, and delay. As mentioned above, although we do not know how each company clears this mechanism for this simultaneous multi-terminal connection at present, it is premised that one million crisis per 1 km 2 can be connected to the communication line at the same time.
Method of communication
Construction of a communication network utilizing VSAT (low orbit satellite) as well as communication using optical lines Although it seems that communication of high speed and large capacity will be performed using the 4G line up to now using the optical line as it is, for the area where the optical line has not arrived, VSAT (low orbit satellite) communication It is also considered to make connections by utilizing them.
The current situation in Japan The current communication used by the Japanese is considerably proportional to the optical line reaching the home, or the Internet connection using the cable TV line has become widespread, there is not much trouble with the slow communication line. This can be said that there are environments in which it is relatively easy for laying of optical lines and cable television lines from areas with large land such as the United States and China due to the small national land of Japan. Also regarding the cellular phone, the communication using the current 4G line can be handled without problems in a considerable area where the population coverage rate is over 90%, so even opinions like whether the change to 5G is really necessary is heard. Regarding video (television), 4K and 8K television are currently being released from each manufacturer one after the other in Japan, and many are on the shop front. However, the current Japanese television broadcasting does not deliver 4K and 8K, and even if you purchase 4K, 8K compatible television, it will not benefit from that. Moreover, with the 4K, 8K TV built-in devices currently being sold, it is not possible to display the 4K, 8K distribution that will start in the future, and it is in a state that it is impossible to understand that it is necessary to install new equipment separately in each household.
Our product correspondence We develop and sell the following products corresponding to 5G next-generation communication standards. We can offer optical communication products and VSAT products to sequentially shift to 5G via 4.5G using the current 4G communication network.
For base station main unit Low Phase Noise VCXO 122.880 MHz Crystal Resonator for Discrete Crystal Filter
UM-1 Fundamental Mode Crystal Unit 122.400 MHz band, 75.000 MHz band, 151.000 MHz band, etc.
VSAT Components Parts Ku-band C-band VSAT BUC LNB etc.
We will post the product details one by one. If you have any inquiries about the product, please contact our sales department.
We are pleased inform you our new Low Phase Noise CMOS Crystal Oscilator Model No. AOK-C9070LP.
This product was developed for mobile communication base 5G mobile base station board etc. In order to enable communication to high speed and large capacity, against high frequency and low phase noise required for the reference clock. By configuring this product with discrete, low noise value has been realized compared to the conventional 1-chip type. It is also used as a clock source for special measurement equipment and medical equipment.
Test Sample: AOK-C9070LP
Supply Voltage: 3.3V
Unit: dBc/Hz Measured: E5052B(Agilent)
If you are interested in this Low Phase Noise CMOS Crystal Oscillator, please feel free to contact our sales department.
About Low Phase Noise & Low Jitter type CMOS VCXO I would like to introduce the sample test data that we had inquiries from various customers.
Test Sample: AXK-C3225J
Supply Voltage: 3.3V
Control Voltage: 1.65V+/-1.5V
This product is used as a reference clock source in optical communication equipment, wireless communication equipment, audio equipment, medical equipment, defense equipment etc. where size reduction is required. Among them, it is particularly required for boards that require CMOS output waves that are easier to handle than Sine waves or differential amplified waves (LVDS, LVPECL) as the reference clock.
We plan to develop further higher frequency and lower noise products.
If you are interested in this Low Jitter CMOS VCXO, please feel free to contact our sales department.
We have released New OCXO Low Phase Noise type AXK-OLP series.
OCXO is used as a clock source for high-speed communication boards and measurement equipment. Compared to conventional products, AXK-OLP series is an excellent product with Phase Noise special product and Aging special product. Model No. AXK-OLP series Frequency: 10.000 MHz Package Size: 20.60 mm * 20.60 mm (5 Pin) Output: Size Wave Phase Noise Data@10MHz
In addition, this product is also highly competitive in terms of price.
If you are interested in our New OCXO, please feel free to contact our sales dept.
We have received crystal cap for UM-1 & UM-5 crystal unit from new facility.We are going to inspect these crystal cap performance in our production dept.At present, SMD products are the mainstream of quartz products, and DIP type crystal products are steadily decreasing. However, products that require special crystal parameters of DIP also exist deeply, and our company responds and supply it. Crystal Cap, which is a metal product, also has been stopped manufacturing each company, so it is difficult to obtain it. Also, Crystal Cap may change the parameters of the crystal due to the difference in manufacturing method even with the same metal, size and treatment. At our company, we evaluate the performance of Crystal Cap by actually manufacturing the crystal resonator as much as possible before selling Crystal Cap and measuring various parameters.We can supply special crystal unit such as UM-1 for OCXOs etc. If you are interested in our crystal unit and also crystal cap(Hermetic Seal), please kindly contact our sales dept.Hermetic Seal for CrystalContact