QW490

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RF antennas are a form of technology used to send and receive radio frequency signals. The most commonly used type of RF antenna is the dipole antenna, which consists of two conductors that are parallel to one another and separated by a distance. The QW490 is a microstrip patch antenna that operates in the 4.9GHz frequency range. This type of antenna is designed for wireless applications such as 802.11a/b/g LANs, WiMAX, Wi-Fi 802.11n, and Bluetooth.

The QW490 is a fully enclosed sealed antenna that is compact in size and lightweight. The shape of the QW490 patch antenna is rectangular, and it has two rectangular plates with a metalized dielectric substrate in between. On the top of the antenna is a radiating metal patch that is electrically connected to ground. The bottom of the antenna consists of four small ground plane patches that serve as the antenna’s ground plane. This design gives the antenna a wide beamwidth and a low radiation pattern in the far field.

The operation of the QW490 involves the transmission of signals between the antenna’s radiation patch and the four ground plane patches. When an electromagnetic wave travels through the antenna, it is propagated between the radiating patch and the ground plane patches. This is caused by the electrical field generated between the two surfaces, which causes the patch antenna to resonate. The resonating frequency is determined by the distance between the radiating patch and the ground plane patches.

The signal propagation between the patch antenna and the ground plane is affected by the impedance of the antenna. This can be adjusted to suit the specific applications. The antenna impedance can be adjusted by varying the antenna’s physical parameters such as antenna’s radiation patch size and the distance between the radiation patch and the four ground plane patches. By adjusting these parameters, the antenna impedance can be adjusted to match the impedance of the device where it will be connected.

The QW490 is ideal for applications involving Wi-Fi and WiMAX because of its wide beamwidth and low radiation pattern. This makes it suitable for applications such as single-cell wireless local area networks, long-haul wireless mesh networks, home wifi, and in-building wireless LANs. It can also be used in indoor and outdoor applications.

The QW490 is also widely used in Bluetooth, as it is specifically designed to work with Bluetooth devices. Its wide beamwidth and low radiation pattern make it ideal for applications requiring short-range, low-power communication. It can also be used in task-based applications where high levels of performance are required. The antenna’s low radiation pattern allows for improved privacy due to reduced interference from nearby devices.

The QW490 is a highly versatile antenna that can be used for a wide range of applications. Its wide beamwidth and low radiation pattern make it ideal for applications involving Wi-Fi, WiMAX, Bluetooth, and task-based applications. Additionally, it is highly adjustable, allowing for customization based on specific application requirements. Overall, the QW490 is an advantageous microstrip patch antenna that offers a wide range of features and benefits.

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