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We are currently offering the following materials for free! Please download the PDF file using the "Download Catalog" button. ■ Fundamentals of Wireless Engineering 01 "Why do radio waves travel?" – The mechanism of radio wave propagation and the relationship between frequency and wavelength. - This section explains how radio waves travel through empty space and covers the fundamental concepts of frequency and wavelength necessary for understanding radio waves. ■ Fundamentals of Wireless Engineering 02 "How far do radio waves travel?" – Calculation methods for communication distance and comparisons based on frequency. - The communication distance of wireless signals is influenced by various factors such as transmitter output, frequency, antennas, obstacles, and receiver performance. This section simplifies these conditions as much as possible to calculate and compare the differences in communication distance based on frequency. ■ Fundamentals of Wireless Engineering 03 "Let's ensure a clear path for radio waves!" – Calculation methods for the Fresnel zone and comparisons based on frequency. - To achieve stable communication via wireless means, it is important to ensure a clear path for the propagation of radio waves. This section calculates the "Fresnel zone," which is the pathway for radio waves, and compares the differences based on distance and frequency.