Design and ground plane optimization of a CPW-fed ultra-wideband antenna

Mohammed AL-HUSSEINI; Ali RAMADAN; Youssef TAWK; Ali EL-HAJJ; Karim Y. KABALAN

Makale detayları

Design and ground plane optimization of a CPW-fed ultra-wideband antenna

Yazarlar:

Mohammed AL-HUSSEINI | Ali RAMADAN | Youssef TAWK | Ali EL-HAJJ | Karim Y. KABALAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2011 Vol.19 Issue 2, pp.243-250

Belge Tipi:

Makale

Yayın Tarihi:

1/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000743804

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

In this paper, an ultra-wideband antenna based on an  egg-shaped conductor and a co-planar waveguide (CPW) feed is  presented.  The ground plane incorporates an egg-shaped slot with  parametrized center and dimensions.  By resizing the slot and moving  its center, a slotted or a partial ground can be obtained.  Based on  this configuration, a parametric study that aims at achieving the best  ultra-wideband (UWB) response of the antenna is done.  The study shows  that an excellent UWB response is achieved for a certain ground slot  size, beyond which the response starts to degrade.  However, as the  slot size tends to infinity, thus leading to a partial rectangular  ground plane, the UWB property again emerges.  A second parametric  study is done to find the length of the partial rectangular ground  plane that gives the best UWB profile.    As a result, two optimal designs are generated.  Prototypes of the two  are fabricated and their return loss is measured.  Other  characteristics are computed using a Finite-Element-based EM solver.  The radiation patterns, peak gain, and radiation efficiency of both  optimal configurations are presented and compared.  The results show  that the design with the slotted ground yields better omni-directional  patterns and higher gains in the principal planes.  The second design  has slightly larger radiation efficiency and larger peak gains at highfrequencies.

 

In this paper, an ultra-wideband antenna based on an  egg-shaped conductor and a co-planar waveguide (CPW) feed is  presented.  The ground plane incorporates an egg-shaped slot with  parametrized center and dimensions.  By resizing the slot and moving  its center, a slotted or a partial ground can be obtained.  Based on  this configuration, a parametric study that aims at achieving the best  ultra-wideband (UWB) response of the antenna is done.  The study shows  that an excellent UWB response is achieved for a certain ground slot  size, beyond which the response starts to degrade.  However, as the  slot size tends to infinity, thus leading to a partial rectangular  ground plane, the UWB property again emerges.  A second parametric  study is done to find the length of the partial rectangular ground  plane that gives the best UWB profile.    As a result, two optimal designs are generated.  Prototypes of the two  are fabricated and their return loss is measured.  Other  characteristics are computed using a Finite-Element-based EM solver.  The radiation patterns, peak gain, and radiation efficiency of both  optimal configurations are presented and compared.  The results show  that the design with the slotted ground yields better omni-directional  patterns and higher gains in the principal planes.  The second design  has slightly larger radiation efficiency and larger peak gains at highfrequencies.

Makale detayları

Design and ground plane optimization of a CPW-fed ultra-wideband antenna

Yazarlar: Mohammed AL-HUSSEINI | Ali RAMADAN | Youssef TAWK | Ali EL-HAJJ | Karim Y. KABALAN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2011 Vol.19 Issue 2, pp.243-250

Belge Tipi: Makale

Yayın Tarihi: 1/2011

Belge Dili: Türkçe

Document ID (Org No.): 2000743804

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Mohammed AL-HUSSEINI | Ali RAMADAN | Youssef TAWK | Ali EL-HAJJ | Karim Y. KABALAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2011 Vol.19 Issue 2, pp.243-250

Belge Tipi:

Makale

Yayın Tarihi:

1/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000743804

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632