Narrow flat metal‐plate antenna for dual‐band WLAN operation

Abstract

The application of optical packet switching in future communication networks, IEEE ABSTRACT: A novel dual-band antenna made of a narrow, rectangular, flat metal plate for wireless local area network (WLAN) operation in the 2.4-and 5.2-GHz bands is presented. The antenna comprises a larger radiating arm, a smaller radiating arm, and a shorting portion. The larger and smaller radiating arms control a lower resonant mode at about 2.4 GHz and an upper resonant mode at about 5.2 GHz, respectively, and are connected to each other through the shorting portion. The antenna is easily excited by using a 50⍀ mini coaxial line and shows good antenna performance. The proposed antenna design is de-scribed and experimentally studied.ABSTRACT: A methodology is presented for the design synthesis of metamaterials that act as thin multifrequency artificial magnetic conductors. These structures are realized by placing a frequency-selective surface above a conventional prefect electric conductor, separated by a thin dielectric layer. The frequency-selective surface design is optimized using a microgenetic algorithm to operate at multiple, narrow frequency bands. Two examples of genetically engineered multiband high-impedance frequency-selective surfaces (that is, artificial magnetic conductors) are presented and discussed.

Tri‐band, stand‐alone, PIFA with parasitic, inverted‐L plate and vertical ground wall for WLAN applications

“…Owing to the diverse industrial designs of the products and their applications, many small and compact antennas for WLAN operation have been studied consecutively [1][2][3][4][5][6][7][8][9][10][11][12]. These designs include the use of monopoles [2,8,11,12], patch and strip PIFA [1,3,7], dipoles [5,6,10], and slot and loop antennas [4,9]. Despite a great variety of the WLAN devices and the types of the antennas used, these antennas are mostly fed by mini-coaxial cables.…”

Internal wideband metal-plate antenna for laptop application

“…Figure 1, and is mainly comprised of a T-shaped metal plate and a long shorting strip for short-circuiting the antenna to the supporting metal frame of the laptop display. Similar to the flat-plate or bent metal-plate antennas studied in [2][3][4][5][6][7][8][9][10][11][12], the proposed antenna has a low profile (9 mm to the top edge of the supporting metal frame in this study) and is suitable to perform as an internal or integrated antenna for laptops. Moreover, in addition to covering the 2.4/5.2/5.8-GHz bands for existing WLAN systems, the proposed antenna is also suitable for application in the new broadband wireless metropolitan area network (WMAN) system with the IEEE 802.16e standard for mobile broadband wireless access in the 2.3-5.85-GHz band [13,14].…”

“…For WLAN operation using a laptop or notebook computer [1], flat-plate or bent metal-plate antennas are usually used [2][3][4][5][6][7][8][9][10][11][12]. Such antennas are suitable to be embedded in narrow spaces (usually less than or about 10 mm) between the casing of the laptop and the supporting metal frame of the laptop display as an internal antenna.…”

A COMPACT, PLANAR PLATE-TYPE ANTENNA FOR 2.4/5.2/5.8-GHz TRI-BAND WLAN OPERATION

“…In this case, more 802.11a/b/g/n transceivers are available on the market, and the antennas thereof are required. Many compact planar antennas were reported in the literature [1][2][3][4][5][6][7][8][9][10][11], including printed antenna structures [1][2][3][4][5][6] in either monopole [1][2][3][4] or dipole [5,6] designs and metal-plate antenna structures in planar inverted-F antennas (PIFA) [7,8] and shorted dipoles [9][10][11] designs. The latter can be more widely used in industry than the former.…”