Antenna systems with beam forming and beam steering capabilities for HF skywave radars

Çağatay ULUIŞIK

Makale detayları

Antenna systems with beam forming and beam steering capabilities for HF skywave radars

Yazarlar:

Çağatay ULUIŞIK

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2010 Vol.18 Issue 3, pp.485-498

Belge Tipi:

Makale

Yayın Tarihi:

2/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000743939

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

Radiation characteristics of linearly phased, periodic,  planar dipole arrays, which can be used as transmitting/receiving  antenna systems for HF skywave radars, are investigated.  Rectangular,  triangular and trapezoidal arrays are proposed in obtaining different  beam shapes in the desired directions.  Beam steering is achieved by  adjusting the inter-element phase increments coherently.  The effects  of vertical array-tilt with a desired take-off angle (TOA) a are  presented by a number of radiation pattern examples.  The ground  effect is investigated using the image theory by assuming the Earth's  surface as perfectly electric conductor (PEC).  Radiated fields are  obtained using Floquet wave representations plus the synthetic  aperture approach.  Validation is done against element-by-element  summation representations.

 

Radiation characteristics of linearly phased, periodic,  planar dipole arrays, which can be used as transmitting/receiving  antenna systems for HF skywave radars, are investigated.  Rectangular,  triangular and trapezoidal arrays are proposed in obtaining different  beam shapes in the desired directions.  Beam steering is achieved by  adjusting the inter-element phase increments coherently.  The effects  of vertical array-tilt with a desired take-off angle (TOA) a are  presented by a number of radiation pattern examples.  The ground  effect is investigated using the image theory by assuming the Earth's  surface as perfectly electric conductor (PEC).  Radiated fields are  obtained using Floquet wave representations plus the synthetic  aperture approach.  Validation is done against element-by-element  summation representations.

Makale detayları

Antenna systems with beam forming and beam steering capabilities for HF skywave radars

Yazarlar: Çağatay ULUIŞIK

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2010 Vol.18 Issue 3, pp.485-498

Belge Tipi: Makale

Yayın Tarihi: 2/2010

Belge Dili: Türkçe

Document ID (Org No.): 2000743939

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Çağatay ULUIŞIK

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2010 Vol.18 Issue 3, pp.485-498

Belge Tipi:

Makale

Yayın Tarihi:

2/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000743939

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632