Novel Printed Monopole Antenna for PDA Phone and WLAN Applications

Abstract

The objective of this paper is to design a compact multiband monopole antenna for a PDA phone. Using a simple inverted-U-shaped driven element, we observe that the proposed antenna resonates in the high-frequency band (1700-2568 MHz) for DCS, PCS, UMTS, and WLAN applications. The low-frequency bandwidth (881-1280 MHz), which covers the GSM band, is accomplished by a novel dual low-frequency mode method. The overall dimensions of this proposed antenna are 100 mm (length) × 60 mm (width) × 0.8 mm (thickness); it can easily fit into PDA phones and WLAN products. Herein, the design procedures and the simulated and measured values of return losses, radiation patterns, gain, and efficiency are presented and discussed.

A Meander Pda Antenna for GSM/DCS/PCS/Umts/Wlan Applications

“…The profile of the proposed antenna is originated from a basic self-complementary antenna [10]. The basic antenna structure and simulated return loss are shown in Figures 1(a) and 1(b), respectively.…”

“…To solve the problems of insufficient bandwidth and poor impedance matching, the structure of the basic antenna needs to be modified into the proposed antenna shown in Figure 2. In [10], the insufficient low frequency bandwidth is increased by combining two low frequency paths, in which the first low frequency path is accomplished by adding a truncated slot in the system ground. To maintain the integrity of the system ground plane, this paper uses meander path and extended stub to increase the low frequency bandwidth.…”

Multifrequency Monopole Antennas by Loading Metamaterial Transmission Lines With Dual-Shunt Branch Circuit

“…Planar monopoles and dipoles [1][2][3][4][5][6][7] especially for the multifrequency characteristics are promising candidates in wireless portable communication system in virtue of their low profile, light weight, large service area and easy fabrication. Since artificial electromagnetic (EM) metamaterials (MTMs) [8][9][10][11][12][13][14][15][16] exhibit properties not commonly encountered in nature, there has been a renewed and actual interest in using the artificial EM MTMs in the design of monopole or dipole antennas [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] antennas, and high-gain or circularly polarized antennas [13][14][15][16]36] over recent years.…”

Compact Tri-Band Rectangular Meander Antenna With Asymmetrical L-Shaped Strips for Wlan/Wimax Applications

“…To meet the WLAN standards in the 2.4 GHz (2.4-2.484 GHz)/5.2 GHz (5.15-5.35 GHz)/5.8 GHz (5.725-5.825 GHz) operating bands and the WiMAX standards in the 2.5 GHz (2.4-2.6 GHz)/3.5 GHz (3.4-3.6 GHz)/5.5 GHz (5.25-5.85 GHz) bands, multiband antennas with compact size, low cost, and easy fabrication are required. Various types of multiband antenna designs have been reported [1][2][3][4][5][6][7][8][9][10][11]. Some of them only can fulfill the requirement of the WLAN or WiMAX band, such as the monopole antennas [1][2][3] and the slot antennas [4][5][6].…”

“…Various types of multiband antenna designs have been reported [1][2][3][4][5][6][7][8][9][10][11]. Some of them only can fulfill the requirement of the WLAN or WiMAX band, such as the monopole antennas [1][2][3] and the slot antennas [4][5][6]. Some efficient methods have been discussed to enhance the impedance matching and increase the operating band of the antenna, such as etching two pairs of T-shaped slots on the ground plane [7], employing two T-shaped strips in the two circular slots [8], inserting two pairs of strips into a rectangular slot [9], and adding two pairs of planar inverted L strips to the slotted ground [10].…”