Compact wideband and dual‐band antenna for TD‐LTE and WLAN applications

Abstract

A novel compact wideband and dual-band microstrip-fed antenna is proposed. By using symmetrical inverted-L-shaped strips, a forkshaped strip, a rectangular slot and a defected ground plane, the dual-band resonances of the antenna are generated. The measured impedance bandwidths are 1.12 GHz for the lower frequency band (1.87-2.99 GHz), and 780 MHz for the higher frequency band (5.10-5.88 GHz). The fabricated antenna can be used to cover the entire required bands for time-division-long-term evolution (1880-2655 MHz) and wireless local area network 802.11 a/b/g (2.4-2.4835, 5.15-5.875 GHz). The measured gain at 2.4 and 5.5 GHz is 2.1 and 6.1 dBi, respectively. The antenna shows a compact size of 25 × 30 × 0.8 mm. The details of the antenna design, the operation mechanism and the simulated and measured results are presented.

Uniplanar ACS fed multiband high‐gain antenna with extended rectangular strips for portable system applications

“…The parameters shown in Figure 1A The targeted working frequency (f r ) for the antenna is derived from Equations (1) and (2). The mathematical expressions of recently developed ACS-fed antenna [15][16][17][18][19][20][21][22][23][24][25][26] for the appropriate impedance matching are given in Equations (3) and (4).…”

“…Different antenna design techniques have been proposed for wireless applications in . In that, T‐shaped, inverted L‐shaped, and F‐shaped radiating elements which were used as antenna main radiating elements in and various slot shapes like inverted L, U, and rectangular were introduced in the ground plane and the radiating element of the antenna . Concentric ring‐based structures were employed as antenna's main radiating elements in and for realizing desired applications.…”

Tri-frequency Microcosmic Fractal Dipole Antenna with PBG Structure Used for 2G, 3G and 4G Systems

“…This requires that the mobile communications antenna should have the multi-band compatibility function, cover the working bands of GSM, TD-SCDMA, WCDMA, TD-LTE and other mobile communications standard. At present, the GSM standard communication bands are 0.905-0.915 GHz, 0.950-0.960 GHz, 1.710-1.785 GHz and 1.805-1.880 GHz [3], the TD-SCDMA standard communication bands are 1.880-1.920 GHz and 2.010-2.025 GHz, the WCDMA standard communication bands are 1.920-1.980 GHz and 2.110-2.170 GHz [4], the TD-LTE standard communication bands are 2.300-2.390 GHz and 2.555-2.655 GHz [5].…”

A broadband and tri-band L-shaped slot antenna for 2G/3G/LTE/WiMAX/WLAN applications

“…For this reason, multiband antennas have attracted much attention and many multiband antenna have been presented. A dual-band monopole antenna [1] composed of inverted L-shaped and fork strips and a rectangular slot is proposed for LTE and WLAN used. In [2], a slot antenna using a single split-ring resonator to generate multiple lower-order resonances, but the antenna only can cover 1.65 GHz, 1.93 GHz and 2.20 GHz bands.…”