Why desktop computers still need separate Wi-Fi antennas.

When assembling a desktop computer or buying a used one, users may find Wi-Fi antennas mounted on the motherboard or inside the case.

These antennas typically have a screw-in design for direct connection to the back of the computer or a shark fin design, connecting via an extension cable. At this point, many people might wonder why computers need Wi-Fi antennas when mobile devices like smartphones or laptops connect well to Wi-Fi without external antennas.

These antennas typically have a screw-in design for direct connection to the back of the computer or a shark fin design, connecting via an extension cable.

In reality, although you don't see large antennas on mobile devices, each device still uses some type of antenna. Most desktop and laptop computers from well-known brands have internal antennas, but they are usually hidden for aesthetic reasons. Smartphones often use a metal frame as an antenna or have a thin membrane antenna embedded inside the casing.

The Wi-Fi antenna on a computer is more important than people think.

The role of the Wi-Fi antenna is crucial because its absence can cause Wi-Fi connection errors and affect Bluetooth connectivity as well, since the same type of antenna is often used for both functions.

Wi-Fi antennas plugged into computers help the Wi-Fi chip amplify the signal, maintaining a stable connection to Wi-Fi networks. Modern Wi-Fi chips in desktop computers are often small and have limited capabilities in transmitting and receiving radio waves, thus relying on antennas. Furthermore, computer cases often act as a Faraday cage, reducing wireless signal transmission and reception.

In addition to supporting Wi-Fi connectivity, modern Wi-Fi chips also integrate Bluetooth transceivers, meaning antennas are also necessary for Bluetooth devices and accessories. While some peripherals can function without an external antenna, there is always a risk of disconnection.

Using external antennas for desktop computers offers several advantages. While mobile device manufacturers have focused on compact designs, desktops still prioritize performance with simple, easily upgradeable antennas. Unlike phones and laptops, which have glass or plastic components that allow signals to pass through, desktop computer casings are mostly metal, making signal transmission difficult.

Using an external antenna not only makes it easier to upgrade the Wi-Fi chip with newer generations, but also allows for more effective reception of weak signals compared to an internal antenna, thus providing users with a more stable and stronger Wi-Fi connection experience.

According to Thanh Nien Newspaper

Source: https://baoangiang.com.vn/ly-do-may-tinh-de-ban-van-phai-dung-ang-ten-wi-fi-roi-a486939.html