Wave Technology List of News Articles

Our company offers a "Disassembly Investigation Report" (Reverse Engineering Report) that combines unique perspectives and research know-how. We conduct investigations not only on disassembly, BOM creation, and circuit diagramming but also delve into the characteristics of the target products (electrical characteristics, temperature rise). Our engineers, who have extensive experience in the field of reverse engineering, report from a unique designer's perspective. *The price for the report starts at ¥198,000. For more details, please contact us. 【Features】 ■ Combines unique perspectives and research know-how ■ Options for partial report sales and comparison reports for two models are available upon request ■ Our engineers, with rich experience, report from a unique designer's perspective ■ Investigations go beyond disassembly, BOM creation, and circuit diagramming to include the characteristics of the target products (electrical characteristics, temperature rise) *For more details, please refer to the PDF materials or feel free to contact us.

Our company offers a "Disassembly Investigation Report" (Reverse Engineering Report) that combines our unique perspective and research expertise. We conduct investigations not only on disassembly, BOM creation, and circuit diagramming but also delve into the characteristics of the product under investigation (electrical characteristics, temperature rise). Our engineers, who have extensive experience in the field of reverse engineering, report from a unique designer's perspective. *The price for the report starts at ¥198,000. Please contact us for more details. 【Features】 ■ Combines unique perspectives and research expertise ■ Partial report sales and comparison reports for two models are available upon request ■ Our engineers, with rich experience, report from a unique designer's perspective ■ Investigations go beyond disassembly, BOM creation, and circuit diagramming to include the characteristics of the product under investigation (electrical characteristics, temperature rise) *For more details, please refer to the PDF document or feel free to contact us.

Our company offers a "Disassembly Investigation Report" (Reverse Engineering Report) that combines our unique perspective and research expertise. We conduct investigations not only limited to disassembly, BOM creation, and circuit diagramming but also delve into the characteristics of the investigated products (electrical characteristics, temperature rise). Our engineers, who have extensive experience in the field of reverse engineering, provide reports from a unique designer's perspective. *The price for the report starts at ¥198,000. For more details, please contact us. 【Features】 ■ Combines unique perspectives and research expertise ■ Options available for partial report sales and comparison reports for two models, tailored to your needs ■ Reports provided by our engineers with extensive experience, from a unique designer's perspective ■ Investigations extend beyond disassembly, BOM creation, and circuit diagramming to include the characteristics of the investigated products (electrical characteristics, temperature rise) *For more details, please refer to the PDF materials or feel free to contact us.

Our company offers a "Disassembly Investigation Report" (Reverse Engineering Report) that combines unique perspectives and research know-how. We conduct investigations not only limited to disassembly, BOM creation, and circuit diagramming but also delve into the characteristics of the target products (electrical characteristics, temperature rise). Our engineers, who have extensive experience in the field of reverse engineering, report from a unique designer's perspective. *The price for the report starts at ¥198,000. For more details, please contact us. 【Features】 ■ Combines unique perspectives and research know-how ■ Options available for partial report sales and comparison reports for two models, according to your needs ■ Our engineers, with rich experience, report from a unique designer's perspective ■ Conducts investigations not only limited to disassembly, BOM creation, and circuit diagramming but also delves into the characteristics of the target products (electrical characteristics, temperature rise) *For more details, please refer to the PDF document or feel free to contact us.

We offer a "Disassembly Investigation Report" (Reverse Engineering Report) that combines our unique perspective and research know-how. Our investigation goes beyond just disassembly, BOM creation, and circuit diagramming; we also delve into the characteristics of the target product (electrical characteristics, temperature rise). Our engineers, who have extensive experience in the field of reverse engineering, report from a unique designer's perspective. *The price for the report starts at ¥198,000. Please contact us for more details. 【Features】 ■ Combines unique perspectives and research know-how ■ Partial report sales and comparison reports for two models are available upon request ■ Our engineers, with rich experience, report from a unique designer's perspective ■ Investigation goes beyond disassembly, BOM creation, and circuit diagramming to include the characteristics of the target product (electrical characteristics, temperature rise) *For more details, please refer to the PDF materials or feel free to contact us.

When using a fan or blower to circulate air within a space, there may be objectives such as wanting to direct airflow locally or wanting to distribute air throughout the entire space. However, if the placement of the fan is done solely based on intuition, it may not achieve those objectives. Therefore, this time, we will introduce the importance of not only the outlet side of the fan but also the inlet side when using fans or blowers to circulate or ventilate air inside a room or electronic devices. For more details, please refer to the related products and catalog below.

At WTI, we offer thermal design services that include predicting component temperatures and proposing heat dissipation measures, among which ventilation is one of the effective strategies. In today's life, the importance of ventilation in offices and rooms is increasing, and the fundamental concept of ventilation for electronic devices is the same as that for room ventilation. Therefore, this time we will introduce methods to ensure the entry and exit of airflow when ventilating. For more details, please refer to the related products and catalogs below.

At WTI, we conduct design and development tailored to our customers' requests, but this time I will discuss principle verification. Here, principle verification refers to confirming basic operations and characteristics before starting full-scale product design. When there is a request for new development and it is believed that there may be technical challenges, we may suggest starting with principle verification. For more details, please refer to the related products and catalogs below.

Recently, with the spread of mobile devices, there has been remarkable progress in the miniaturization and high capacity of ceramic capacitors. However, when using ceramic capacitors, it is essential to thoroughly understand their characteristics. In particular, those with high dielectric constants can have significant variations in capacitance due to temperature and applied voltage, so caution is necessary. This time, we will focus on the often-overlooked factor of "shock" and introduce some precautions for using ceramic capacitors. For more details, please refer to the related products and catalogs below.

Our company offers custom measurement services, proposing the construction of testing environments tailored to our customers' needs. We cater not only to general evaluations such as semiconductors but also to a wide range of specialized measurements, including high-sensitivity measurements, large currents, and high voltages. This time, we would like to introduce a transistor sorting inspection system that was developed in response to such requests. It is especially recommended for customers who are struggling with the need for custom evaluations but cannot make capital investments. For more details, please refer to the related products and catalog below.

This time, I would like to continue discussing the topic related to transfer functions, which I briefly touched on last time. A transfer function, as mentioned in the title, is knowledge necessary for the design of power supply control circuits. Phase compensation can also be considered a control circuit in terms of controlling circuit oscillation. I have also included a brief overview of transfer functions. Please take a moment to read it. For more details, you can refer to the related products and catalogs below.

Recently, we received inquiries about the differences between "LTE-M" and "NB-IoT," which are communication standards for IoT devices using LPWA (Low Power Wide Area) technology. We will discuss questions such as, "Why doesn't the performance match the data sheet?" and "How can we ensure performance according to the design values/data sheet?" Please take a moment to read it. You can find more details in the related products and catalogs below.

This time, I would like to discuss the basics of "insulation" in power supply design. In power supply design, insulation is primarily used to ensure the safety of equipment and to prevent malfunctions caused by noise, making it an important factor related to the safety and reliability of the equipment using the power supply. Please take a moment to read it. For more details, you can refer to the related products and catalogs below.

This time, I would like to convey that timing verification is extremely important in FPGA design. I have included images of long wiring between flip-flops. Please take a moment to read it. For more details, you can refer to the related products and catalogs below.

The structural design department can be broadly divided into simulation (thermal, stress) and mechanism design, and I am in charge of thermal simulation. I started with almost no knowledge of heat. Through daily learning, simulations that visualize the invisible "heat" are important tools for solving various thermal problems and preventing them before they occur, and I am currently learning the basics of this. There are two major challenges in thermal simulation. I will explain the reasons for this. For more details, please refer to the related products and catalogs below.

One of the important components that affects the reception characteristics of wireless devices is the LNA (Low Noise Amplifier). We sometimes receive requests from customers asking, "What criteria should we use for selecting this component?" Therefore, this time, I would like to discuss the selection criteria for LNAs. Please take a moment to read through it. For more details, please refer to the related products and catalogs below.

The current work involves the evaluation of power conditioners (hereinafter referred to as "power conditioners"). Although there are various types of evaluations for "power conditioner evaluation," this time I would like to discuss the noise countermeasures implemented in recent work. Please take a moment to read it. For more details, please refer to the related products and catalogs below.

This time, I will talk about weak wireless communication. Weak wireless communication emits only significantly weak radio waves, so there are no restrictions on usage or transmission time, and there is no need to apply for or notify a license. However, the electric field strength (the strength of the radio waves) must be lower than the specified level. For more details, please take a moment to read this. You can find more information in the related products and catalogs below.

This time, I will talk about the voltage detection circuit, which plays an important role in the functions of the power converter. The evaluation of the power converter includes assessments related to the circuit, such as confirming the operation of circuit functions and checking component ratings. Please take a moment to read it. For more details, you can refer to the related products and catalogs below.

This time, I would like to talk about "5G" and "high-frequency amplifiers," which are one of the communication standards. I will introduce "What is 5G?", the "features of 5G," and "high-frequency amplifiers for 5G." Please take a moment to read it. You can find more details in the related products and catalogs below.

SiC MOSFETs have the characteristic of having a higher breakdown voltage compared to Si, while also having a lower resistance. Utilizing this feature, many products are seen that replace high-voltage IGBTs with SiC MOSFETs. This time, I would like to talk about MOSFETs. Please take a moment to read. For more details, please refer to the related products and catalogs below.

In Spice simulation, it is common to use models provided by manufacturers or models extracted from actual measurements. However, as the scale becomes too large, issues can arise such as slow analysis speeds or failures due to errors. This can lead to situations where you only want to confirm trends, but end up spending more time investigating the manufacturer's models because they won't run. This time, I would like to talk about "behavior models" that can be used when you want to grasp trends simply in circuit simulation. For more details, please refer to the related products and catalogs below.

Last time, we created the base PWM signal, so this time we will add the necessary dead time for actual operation and try driving the inverter circuit with the generated signal. We have provided clear explanations using diagrams and graphs, so please take a moment to read through it. For more details, you can refer to the related products and catalogs below.

When you observe signal waveforms, I believe many of you use an oscilloscope. Today, I will talk about whether the waveforms you see on that oscilloscope are truly correct. Please take a moment to read this. For more details, you can refer to the related products and catalogs below.

CAN FD (CAN with Flexible Data Rate) is a communication protocol that extends the protocol specifications of CAN (Classic CAN: Controller Area Network) to support higher communication speeds and larger data volumes compared to traditional CAN. This document explains the actual implementation of CAN FD communication using the AURIX microcontroller from Infineon, utilizing an evaluation board (TriBoard). We encourage you to read it. For more details, please refer to the related products and catalogs below.

In the case of a 920MHz small radio module with relatively good communication distance and decent transmission speed, the transmission output is limited to 20mW or less. A line-of-sight distance of about 5 km is possible. However, in practice, it is often the case that the range only reaches a few hundred meters. This document explains the factors that can reduce communication distance. For more details, please refer to the related products and catalogs below.

Following Shirutoku No. 79, this is the second installment of measures to improve communication distance. Last time, we introduced how reviewing the installation height of antennas in relation to the Fresnel zone can extend communication distance. This time, I would like to consider countermeasures against interference waves. For details, please refer to the related products and catalog below.

Recently, many customers have expressed a desire to obtain Technical Standards Conformity Certification (Giteki) in order to use and sell imported Wi-Fi products domestically. However, most imported Wi-Fi products are not adjusted for the Japanese market, and if tested as they are, they often cannot obtain Technical Standards Conformity Certification (Giteki). Let me explain the reasons for this. For more details, please refer to the related products and catalogs below.

This time, we will introduce a comparison of radiation efficiency by changing the ground area of the monopole chip antenna. We will discuss the "introduction," as well as the "monopole antenna" and the "relationship between the radiation efficiency of monopole chip antennas and ground area." Please take a moment to read it. For more details, please refer to the related products and catalogs below.

Recently, there have been inquiries about the differences between "LTE-M" and "NB-IoT," which are communication standards for IoT devices using LPWA (Low Power Wide Area) technology. Both "LTE-M" and "NB-IoT" are IoT communication services that utilize mobile phone networks and operate in the same frequency band. Please take a moment to read this. For more details, you can refer to the related products and catalogs below.

Our company offers a one-stop service from replacement component research to renewal design, including prototyping and evaluation. We have prepared Plan A for alternative component research, Plan B for revision design support, and Plan C for FPGA implementation. Please feel free to contact us when you need assistance. 【Plans】 ■ Plan A: Alternative Component Research ■ Plan B: Revision Design Support ■ Plan C: FPGA Implementation For more details, please refer to the related products and catalogs below.

The term "IoT" has permeated our lives to such an extent that there is no need to reiterate its definition. There are many inexpensive gadgets available on the market that allow development simply by connecting to a PC, even without a special development environment, making it easy to create IoT devices as part of summer vacation projects. While IoT devices have become so easy to develop, what challenges arise when it comes to commercialization and productization? We will introduce the essential embedded technologies for IoT development. For more details, please refer to the related products and catalogs below.

I am engaged in power circuit design and see a wide variety of power supplies on a daily basis. There are various control methods for power supplies, but the two types that are commonly seen are: (1) Constant voltage power supply, which is controlled to maintain a constant voltage value. (2) Constant current power supply, which is controlled to maintain a constant current value. This time, I would like to talk about (2) the constant current power supply. For more details, please refer to the related products and catalogs below.

In digital circuits, there are circuits that are synchronized with a clock (synchronous circuits) and those that are not (asynchronous circuits). In synchronous circuits, flip-flops (FF) used have timing specifications such as setup time (tSU) and hold time (tH) established as requirements for stable operation between the clock and input signals. This time, we will explain the handling of asynchronous input signals, which require caution in digital circuit design such as with FPGAs. For more details, please refer to the related products and catalogs below.

We are engaged in the development of chargers for Li-ion batteries. In addition to the Li-ion battery, the charger is connected to an inverter as part of the entire system, so it is required to have resistance to the noise voltage generated by these components. This time, I will discuss the resistance of this charger to the noise voltage applied externally to its output terminals. For more details, please refer to the related products and catalogs below.

LED lighting is now used in various places, such as home lighting, streetlights, and display backlights. When using LEDs for lighting, it is often necessary to drive multiple units simultaneously to meet brightness specifications, and in such cases, the question arises as to how to combine and connect them in series and parallel. Are you aware of the characteristics that differ based on the connection method? I would like to explain the advantages and disadvantages of connecting LEDs in series and parallel. For more details, please refer to the related products and catalogs below.

As indicators of the performance of high-frequency amplifiers, there are output power, gain, efficiency, and so on, and development is progressing to meet the required performance for each. However, aside from these performance metrics, there is an important issue to be aware of in high-frequency amplifier development: "not oscillating." This document explains that countermeasures against oscillation are also important in high-frequency amplifier development. Please take a moment to read it. For more details, you can refer to the related products and catalogs below.

Have you ever seen the "Technical Standards Conformity Certification" mark? This mark is granted to products that have received certification commonly referred to as "Giteki." Today, I would like to talk about the acquisition of this Giteki certification, which has received many inquiries. Please take a moment to read this. You can find more details in the related products and catalogs below.

In this document, I would like to discuss the design of high-frequency amplification circuits. High-frequency amplification circuits consist of amplification elements, matching circuits, and bias circuits. I will explain in order the "selection of amplification elements," "design of matching circuits," and "design of bias circuits." Please take a moment to read it. For more details, you can refer to the related products and catalogs below.

I work in the development and design field of mobile communication devices. In this document, I will focus on the "modification" work within that context. "Modification" in the development and design field involves identifying issues from prototype evaluations and incorporating the countermeasures back into the prototype (essentially rebuilding it). There are points to be cautious about in terms of both the work itself and the design aspects of "modification." For more details, please refer to the related products and catalogs below.

In this document, I would like to talk about audio design (high sound quality). Recently, we haven't heard the term Hi-Fi (high fidelity, high reproduction) as much, have we? It might be because Wi-Fi has become so common that it has become confusing, or perhaps it's because high-resolution audio has taken the place of Hi-Fi as the term for high sound quality. You can find more details in the related products and catalog below.

Do you all know about specific low-power radio? It is also referred to as "Tokushou" for short. In this document, we will introduce this topic. We have included information on "the uses of specific low-power radio (Tokushou) stations" as well as "wireless communication circuit design services," so please take a moment to read through it. You can find more details in the related products and catalogs below.

In the field of high frequency, the use of circuit simulation has become essential for circuit design. This document introduces the utilization of high frequency circuit simulators. We explain using figures such as "Examples of circuit simulation results for matching circuits," so please take a moment to read it. For more details, please refer to the related products and catalogs below.

In this document, we would like to provide a detailed introduction regarding the increasing inquiries about "Giteki." We will explain what is needed for a Giteki application, using the application for a Bluetooth (BLE) module as an example. We have also included the benefits of requesting a Giteki application from a design company, so please take a moment to read it. For more details, please refer to the related products and catalogs below.

This document summarizes the WTI blog of Wave Technology Co., Ltd., a "development and design promotion business" that addresses the shortage of engineers, from April 5, 2022, to April 26, 2022. It introduces topics such as "Regarding the dimensional standards of semiconductor packages" from April 5, 2022, and "Is it true that current becomes a whirlpool?" from April 26, 2022. In addition, it includes a wealth of useful information related to products and industries. We encourage you to read it. [Contents] ■ April 5, 2022: "Regarding the dimensional standards of semiconductor packages" ■ April 12, 2022: Inquiry case studies from substrate manufacturers (sequel) ~ Substrate design also requires adjustments that align with the manufacturing processes of substrate manufacturers ~ ■ April 19, 2022: An era where services are utilized for tasks other than the core work of the company ■ April 26, 2022: Is it true that current becomes a whirlpool?