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In the paper, a design of MIMO antenna applied to IEEE 802.11 ac applications is proposed and investigated. There monopole antennas are adopted and located in three notch on the ground plane with square shape. The three monopole antennas are inverted-L shaped, and two inverted-Z shaped ones. The metal surrounded the monopoles are used to enhance isolation between them and impedance matching. The simulated...
A novel compact multiband planar antenna fed by a microstrip line structure is presented. The proposed antenna is developed for wireless communication applications of the global system for mobile (GSM) communication and long-term evolution (LTE) in different service bands of 900, 1800, 1900, 2300, and 2500 MHz. The antenna has five bands, and the structure is a combination of a monopole antenna and...
This paper designs a monopole antenna on a commonly used FR4 substrate with width of 0.8 mm. The overall dimensions of the proposed antenna are 45×94.5 mm2, which can be easily applied in today's mobile devices. With small size of radiation element (45×12 mm2), the proposed antenna consists of three resonant paths that operate three resonant bands. By carefully adjusting the length of antenna paths...
A novel planar monopole antenna with an inverted-U-shaped element and a meander low-frequency path is developed and proposed. By adjusting the size of inner ground strip and the gap between inverted-U element and the outer ground strip, the high-frequency band can be applied in DCS1800, PCS 1900, UMTS2000, and WLAN systems. The meander line, outer ground strip, and extended stub are used for increasing...
In this paper, the proposed monopole antenna is designed to cover the global system for mobile communication (890-960 MHz), digital communication system (1710-1880 MHz), personal communication system (1850-1990 MHz), and universal mobile telecommunication system (1920-2170 MHz) bands for mobile phone. The proposed antenna has a folded current path operating three frequency modes at 900 MHz, 1.8 GHz...
In this paper a novel wideband printed monopole antenna has been proposed, fabricated and tested for wideband signal reception in the 530 MHz ~3 GHz. And the proposed antenna can be applied to receive the signal on DVB band, as well as GSM/DCS/PCS/UMTS and WLAN bands. The proposed antenna has an advantage of simple configuration, low profile, easy to fabricate and low cost, therefore it will be an...
In this paper, a new hybrid antenna formed by a printed monopole slot (open-ended slot) and a printed monopole for ultra-wideband (UWB) operation is presented. Detailed results of the proposed hybrid antenna are presented and discussed.
A novel low-profile planar monopole antenna suitable for triple band operation of mobile phones has been proposed. A prototype is constructed based on the design. And the antenna occupies a small area of 13 x 23 mm2. The obtained bandwidths meet the bandwidth requirements of the GSM, DCS, PCS and UMTS cellular systems.
The novel design of broadband and triple-band T-type monopole antenna for WiMAX applications has been proposed and studied. The proposed antenna has a compact size of 28 times 26.4 mm2. For the wideband performance of the proposed antenna, the dimensions of the notches on the ground plane and the T-type radiation patch have been studied by parameter analysis. Furthermore, embedded a narrow inverted-L...
Beam forming is vital to radar and mobile communication, particularly in WIMAX where the total power allowed is low (~1 W), the beam width requirement is less stringent compare d to radar, and the number of antennas needed is large. Traditionally beam forming is achieved by phase array, which requires expensive phase shifters. Previously we developed DC biased plasma antenna by coupling signal to...
In this paper, a dual-band rejected design for cross monopole antenna is proposed and experimentally studied. To achieve wide and dual-band rejected operation, the proposed antenna consists of a UWB cross monopole antenna and the small h-shaped slots, producing dual band-rejected characteristics, maintaining wideband performance, and good omnidirectional radiation pattern. Details of the results for...
In this paper, a novel dual-band rejected design for cross semi-elliptic monopole antenna is proposed and experimentally studied. The proposed antenna consists of a ultra-wideband cross semi-elliptic monopole antenna and the H-shaped slots, producing dual band-rejected characteristics and maintaining wideband performance and good omni-direction radiation. Therefore, this technique is suitable for...
In recent years, wireless communications have progressed very rapidly. Wide-band antenna and multi-band antenna designs have become very important for wireless communications. Several promising monopole antennas for WLAN and WiMax applications have been reported recently. According to the WiMax protocol, there is three bands have been allocated for WiMax application: the lower band is 2.5-2.69 GHz,...
The cross semi-elliptic monopole antenna and band-rejected cross semi-elliptic monopole antenna with finite ground plane have been implemented and investigated, respectively. Experimental results show that the obtained impedance bandwidths of the two designs of antenna fit the requirement of the UWB applications. The dipole-like radiation patterns over the operating bandwidth are also shown in this...
In this paper, a new CPW-fed monopole antenna is demonstrated and loaded with a cylindrical ceramic dielectric piece. With this ceramic dielectric piece loaded on the radiator of the monopole, a dual-band operation is generated in a single antenna. The proposed antenna can easily be excited by a 50-Omega CPW line and a tuning metal strips etched on the back side of the dielectric piece, good impedance...
The printed heart monopole antenna with bandwidth larger than 10 GHz has been proposed. In the case, the impedance bandwidth of about 137% has been obtained. The impedance bandwidth and peak gain obtained for the proposed antenna is better than the printed circular disc monopole antenna. And, the size of the proposed antenna is also smaller than the printed circular disc monopole antenna
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