No.ContentsData typeLocationDate of resistrationRegistrant
8Path loss close to ceiling with concrete beammeasurement2F, Bld. B21, Kadoma area, Panasonic Corp., JapanMay. 1st
(Panasonic Corp.)


Frequency928 MHz
Transmission signalFSK
Bandwidth200 kHz
Transmit power0 dBm
Tx antenna height-0.1 m, +0.1 m, +0.6 m with the end face (bottom) of the concrete beam as the reference (0 m)
Rx antenna heightSame as Tx antenna height
Tx/Rx antennaSleeve dipole antenna (2.15 dBi)
Data processing・Path loss [dB] = Transmit power [dBm] – Received power [dBm] + Antenna gain of Tx antenna (2.15dBi) +  
 Antenna gain of Rx antenna (2.15dBi)
・Snap shot Data

Measurement environment

Layout of measurement location (X-Z plane)

Layout of measurement location (Y-Z plane)

Photo of measurement environment

Registered data

(a)\(h\)=-0.1 m

(b)\(h\)=+0.1 m

(c)\(h\)=+0.6 m

Condition of data use

Cite the following paper.

[1] Naotake Yamamoto, Taichi Sasaki, Atsushi Yamamoto, Tetsuya Nishikawa, Kentaro Saito, Jun-ichi Takada, and Toshiyuki Maeyama,”920 MHz Path Loss Prediction Formula Based on FDTD Method for IoT Wireless System close to Ceiling with Concrete Beam,” IEICE Trans. Commun., Vol. E105-B, No. 12, Dec. 2022.

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