A dual‐band printed dipole antenna for IMT‐2000 and 5‐GHz WLAN applications

Rmili, Hatem; Floc'H, Jean Marie; Besnier, P.; Drissi, M'Hamed

doi:10.1002/mop.23767

Cited by 4 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A dual‐band and low cross‐polarization printed dipole antenna with two asymmetric tapered arms for WLAN applications has been designed, fabricated, simulated and tested. Compared to many antennas proposed in recent papers [2–10], this antenna is designed based on a rather simple structure and suitable for dual‐WLAN‐band applications. The proposed antenna can be considered to achieve dual‐band just through altering the length of the radiation patches.…”

Section: Discussionmentioning

confidence: 99%

“…Rather than a traditional dipole [7], the printed dipole has good performances such as the ease of integration, low profile, lightweight, and so on. For proper dipole antenna operation, differential feeding network is needed, Some employ a balun [8–10] to feed the dipole antenna, this proposed antenna is fed by a novel coaxial‐cable feed scheme, simple in structure and easy to fabricate.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Asymmetric‐arm printed dipole antenna for wlan applications

Wang

Lei

Zhang

et al. 2011

Micro & Optical Tech Letters

View full text Add to dashboard Cite

frequencies using equivalent circuit model and THz-TDS system. We found that the structure could be used as a bandpass filter with narrow transmission band and very sharp edges in the terahertz wave region. Because of the charming features of compact size, easy fabrication, flexibility, and low fabrication cost, the terahertz wave filter based on the structure have been attracted much attention, and which will be crucial in the implementation of future terahertz communications systems.ABSTRACT: A novel printed dipole antenna for wireless local area networks (WLAN) applications is presented in this article. The proposed antenna, characterized by dual-band, low cross-polarization, and smallsize, consists of two asymmetric tapered arms. A novel feed scheme is employed to realize a balanced feed. For validation, the antenna prototype is fabricated and measured. The performance of the antenna is verified and characterized in terms of return loss, radiation pattern, and gain. The simulated and measured results show good agreement. Details of the proposed antenna design and tested results are presented and discussed.ABSTRACT: This article presents a high efficiency current-mode class-D (CMCD) amplifier using a GaN high electron mobility transistor (HEMT) for class-S system-a digitally controlled by deltasigma modulation. To enhance a drain efficiency of CMCD amplifier, the chip-on-board (COB) technique, which can reduce the external parasitic components of the packaged transistor and allow fast switching operation at high frequencies by minimizing distortion of the pulse waveform, is adopted. A LC-resonance circuit with adequate Q values between each transistor and output matching network controls harmonic signal by using the lumped elements to extract pure fundamental frequency of the output signal. For a high efficiency pushpull operation of CMCD amplifier, low-loss rat-race baluns are integrated at input and output circuits. From the measured results for a continuous wave of 3.35 GHz, the CMCD amplifier using COB technique shows a maximum output power of 35.88 dBm and a maximum power gain of about 10 dB. Also, the proposed CMCD amplifier provides a high power-added-efficiency (PAE) of 63.1% and a drain efficiency of 76.3% at maximum output power. The drain efficiency is still remained over 70% in the frequency range of 200 MHz.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Asymmetric‐arm printed dipole antenna for wlan applications

Wang

Lei

Zhang

et al. 2011

Micro & Optical Tech Letters

View full text Add to dashboard Cite

show abstract

“…The traveling-wave current would also excite the current distribution on the other CPW ground through the via-hole connectors. But the currents of this part are standing-wave current and the resonant frequency would be constricted by the ground size l, which can be calculated by formula (1), where ε e is the effective permittivity after considering …”

Section: Antenna Working Principlementioning

confidence: 99%

“…In recent years, researchers have also proposed some new omnidirectional antenna structures. Rmili et al proposed a dual-band printed dipole antenna for IMT-2000 and 5 GHz WLAN (Wireless Local Area Network) application [1]. Kung et al also proposed a similar model as Rmili's and printed balum on the substrate for coupling feeding, but this antenna does not have high gain [2].…”

Section: Introductionmentioning

confidence: 99%

Design of Novel CPW Cross-Fed Antenna

Lin¹,

Huang²,

Run-nan³

et al. 2011

PIER C

View full text Add to dashboard Cite

Abstract-A novel coplannar waveguide (CPW) cross-fed antenna which is wideband, high-gain and omnidirectional is proposed. After simulating the antenna model by CST MICROWAVE STUDIO R , the results show that this antenna not only has compact size, but also can effectively broaden operating band, improve gain and remain omnidirectional. In addition, adjusting antenna elements' dimension and spacing can control the central frequency position of operating band and bandwidth. The simulated results of antenna surface currents can be used to explain the reason of antenna possessing broadband and omnidirectional high-gain characteristics. A CPW cross-fed antenna operating at 2.4 GHz is designed and manufactured for measurement. The prototype is printed on a FR-4 epoxy resin board with 1 mm thickness. The experimental results indicate that the operating band is 2.35-2.85 GHz with reflection coefficient less than −10 dB (relative bandwidth 19.2%), and maximum gain in H-plane can achieve 5.2 dBi. Measured results well match the simulated ones. Moreover, the total antenna size is 187 mm × 22.5 mm (1.5λ × 0.18λ), which can make it suitable in WLAN systems.

show abstract

“…Microstrip patch antenna [1], rectangular and triangular antenna [2], inverted F antenna [3], spiral antenna [4], circular ring antenna [5] are the examples of the most popular topologies for achieving dual band operation. Especially, the dual band antenna using spiral or circular ring structure configuration is simple to design, and has been extensively used for various wireless devices such as mobile phone in wireless communication system.…”

Section: Introductionmentioning

confidence: 99%