Slot antennas with an extended ground for multiple-antenna systems in compact wireless devices
Journal
IEEE Antennas and Wireless Propagation Letters
Journal Volume
8
Pages
19-22
Date Issued
2009
Author(s)
Lai, M.-I.
Abstract
In this letter, new slot antennas with an extended ground are proposed. They are easily built as internal antennas in a compact wireless device. Originated from λ/4 slot antennas, an additional vertical L-shaped metallic sheet as an extended ground and a main radiator is added to reduce the antenna size. The sheet is designed close to a ground plane, and its height can be chosen according to the available space of a given device. These features offer more design flexibility for antenna and mechanical engineers. In this letter, antennas for WLAN are designed and implemented as examples, and a four-element antenna design using the resultant antennas is demonstrated, showing that the multiple-antenna design occupies only a small region in the system board. With these design examples the proposed structures can be a promising solution for multiple-antenna systems in compact wireless devices. © 2009 IEEE.
Subjects
Slot antenna
Other Subjects
Antenna size; Design flexibility; Element antenna; Ground planes; Internal antennas; L-shaped; Mechanical engineers; Metallic sheets; Multiple antenna; Multiple antenna systems; Small region; System boards; Wireless devices; Antenna arrays; Antenna feeders; Antenna grounds; Broadcasting antennas; Design; Radio; Wireless local area networks (WLAN); Slot antennas
Type
journal article