This paper presents a coverage estimation considering human body shadowing in a <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$6.4 \times 6.4 \mathrm{m}$</tex> indoor environment using a fabricated 5 G mmWave phased array antenna. The measurements were conducted using an electrically steerable Tx <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$8 \times 8$</tex> phased array antenna positioned on the wall and ceiling, similar to a mmWave repeater, and a <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\text{Rx} 4 \times 4$</tex> array antenna with a beamwidth similar to that of the user's device. To evaluate communication performance, the Error Vector Magnitude (EVM) of 16-QAM modulation was measured when a human was positioned in the line-of-sight (LOS) path between the transmitter and receiver. Coverage estimation results indicate that, in the absence of human body shadowing, a wall-mounted Tx phased array antenna with a <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\pm 65^{\circ}$</tex> beam steering range provides broader coverage. However, when human body shadowing is considered, a ceiling-mounted Tx phased array antenna offers broader coverage. These results can be utilized in research for identifying and improving shadow areas in mmWave indoor environments.