Dual Band Meander Line Antenna for Wireless LAN Communication

Abstract

International audienceA printed meander line antenna is described with a shaped ground plane and a back coupled rectangular patch. The prototype is proposed for wireless local-area network (WLAN) applications in the 2.4-2.48GHz and 5.15-5.35 GHz frequency range. Dual-band operation, resonance impedance matching, and wide impedance bandwidth are the characteristics of the antenna. The antenna impedance matching for the first-resonance is provided by applying a shaped ground plane. The second even-mode resonance is generated by adding a rectangular patch at the back of the meander antenna. The impedance bandwidth for a return-loss less than -10 dB is 11% and 6% for the first- and the second-resonance, respectively. Furthermore, the second-resonance frequency can be tuned by the length of the rectangular patch and it meets the requirements for the IEEE 802.11a WLAN (5.15-5.35 GHz and 5.470-5.725 GHz or 5.725-5.825GHz). In fact, the second-resonance frequency can be continuously adjusted between 5.2 and 7 GHz with a little effect on the first-resonance

Miniaturization of a CPW-fed Dual-Band Antenna for GSM 1800/1900 and WLAN 5 GHz Applications

“…4, with a frequency shifting strips (FSS) structure (S 1 to S 6 ) which connects the upper ground (UG) and lower ground (LG 1 to LG 5 ) and provides the dual-frequency operation. The antenna is made such that a modified ground with CPW-fed structure is obtained and etching can be done on the same side of a FR-4 substrate with dielectric constant 4.4 and thickness 1 mm.…”

“…A wireless device must support applications like mobile communication, high-speed data communication, and tracking systems, but designing such antennas faces great challenges because of the confined space available inside the devices [1,2]. Different techniques have been proposed for designing dual-band WLAN antennas [3][4][5][6]. Ali et al proposed a dual-band/wideband packaged antenna for IEEE 802.11a WLAN band (5.15~5.35 and 5.725~5.825 GHz) applications [3].…”

Effects of Modified Ground Structure on a CPW-fed Patch Antenna

“…Most of the CPW-fed monopole antennas were proposed because of attractive characteristics such as low cost, light weight, compact size and multiresonance modes. In [1][2][3][4], different techniques of designing dual-band WLAN antenna have been proposed. In [1], Ali et al have presented a dual -band antenna for WLAN band applications.…”

Probe-Fed Patch Antenna With an Inclined Patch for on-Wall Wlan Access Point

“…Conventional patch antennas have some advantages of low profile, light weight, ease of fabrication and are attractive to be applied in an ondesk or on-ceiling access point inside a building for WLAN (wireless local area network) operation [1][2][3][4][5][6][7]. However, for the applications in an on-wall access point, the mounting patch antenna is required to be tilted toward the floor surface such that the antenna's main beam can be directed toward the mobile units to achieve enhanced performance for WLAN communications.…”