Gain enhancement wideband end-fire antenna is proposed in this paper. The proposed antenna can achieve gain enhancement by loading novel artificial materials structures (Split-ring Resonators) in the end-fire direction while broad bandwidth is realized by using elliptic dipole elements and a microstrip to coplanar balun. The measurements show that the proposed antenna have around 5-8 dB gain in...

A compact CPW-fed fractal circle monopole antenna with dual wideband is presented for simultaneously satisfying wireless local area network (WLAN) for 2.4/5.2/5.8 GHz application. The antenna consists of irregular shape circles based on the Descartes circle theorem. The simulated -10 dB bandwidth for return loss is from 2.04 to 3.35 GHz and 4.96 to 5.9 GHz, covering all the 2.4/5.2/5.8 GHz WLAN...

This paper presents a top-hat sleeve monopole antenna for ultra-wideband (UWB) applications. The proposed antenna comprises a stem, a dielectric coat, and a top hat sleeve. A modal expansion technique used in cylindrical coordinate system is applied to study the impedance and radiation characteristics of the antenna. Influences of varying parameters of the antenna on impedance matching and radi...

Wideband low profile double Inverted-F antenna (DIFA) for 5.2/5.8 GHz WLAN and 5.5 GHz WiMAX applications by means of numerical simulation is presented. The antenna has compact size of 9×20 mm and provides a wide bandwidth of 2.1 GHz (4675 MHz~6775 MHz) which covers the 5.2/5.8 GHz WLAN and 5.5 GHz WiMAX applications. Moreover it has very high peak gain and lower gain variation within the 10 dB...

A hybrid array configuration suitable for wideband millimeter-wave applications is presented in this work. The proposed structure is based on the use of circular waveguide elements electromagnetically coupled trough circular apertures to a stripline distribution network. The adopted excitation mechanism avoids the use of transition components generally reducing the overall antenna efficiency. S...

− This paper presents dynamic radio channel measurement using a fast wideband complex radio channel sounder and an antenna array. Examples of continuous channels of a moving mobile are presented. The array reception allows the investigation of channel dispersion in both angle and time. In addition, wideband measurement gives information of the coherence bandwidth of the 2D channel, essential fo...

This paper presents the compact wideband loop antenna with a small size of 7.05mm’s radius covering ultra-wideband above 6 GHz, Wi-Fi, and Bluetooth bands for earbuds. The wide bandwidth proposed is obtained structure consisting capacitive loading pin inserted in middle antenna. supports multi-resonant modes. A wider can be by adjusting position pin. half-wavelength resonant frequency ba...