Commercial Ka and Ku bands reflector antennas

Chang, Yueh-Chi; Hanlin, John

doi:10.1109/aps.2007.4396712

Cited by 6 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For satcom-on-the-move (SOTM) applications, there is an increasing interest in developing Kuand Ka-band antennas that share a single aperture. Conventional solutions use bulky parabolic reflector antennas with very complex feeding systems [1][2][3]. Reflectarrays are an interesting alternative to reflector antennas owing to their low profile, light weight, radiation performance versatility, ease of manufacture, etc.…”

Section: Introductionmentioning

confidence: 99%

Design of Ku- and Ka-Band Flat Dual Circular Polarized Reflectarrays by Combining Variable Rotation Technique and Element Size Variation

Florencio

Martinez‐de‐Rioja

et al. 2020

Electronics

View full text Add to dashboard Cite

In this work circularly polarized flat reflectarray antennas are designed to work at downlink frequencies in Ku- and Ka-band. The design approach for circular polarization radiation combines both the variable rotation technique (VRT) and the element size variation technique (ESVT). The reflectarray element employed consists of a rotable split ring operating at 12 GHz (Ku-band) that surrounds two orthogonal sets of parallel dipoles of variable size operating at 20 GHz (Ka-band). Rotations of split rings and different sizes of dipoles are exploited as degrees of freedom by VRT and ESVT for designing focused beams dual band dual circular polarized reflectarrays. The split ring can be used to achieve single focused beams for circular polarization by VRT at 12 GHz, and the set of orthogonal dipoles can be used to achieve two focused beams for dual circular polarization by ESVT at 20 GHz. In this way, the reflectarray element has been used to design two flat dual band circularly polarized reflectarrays that generate three pencil beams either in the same direction or in different directions: one pencil beam with right-hand circular polarization (RHCP) at 12 GHz and two pencil beams with both RHCP and left-hand circular polarization (LHCP) at 20 GHz. The designed reflectarrays are carried out under local periodicity assumption by means of in-house electromagnetic software that applies the Method of Moments in the Spectral Domain. Validations of the in-house electromagnetic software show significant CPU time savings with respect to CPU time consumption provided by commercial software of general purpose as CST electromagnetics software. Numerical results of radiation patterns produced by the designed reflectarrays show efficiencies around 65% and a bandwidth of 6% for a main beam cross-polarization discrimination of 25 dB. The numerical results are satisfactorily validated by CST software and a tolerance errors study has been numerically carried out with acceptable results.

show abstract

Section: Introductionmentioning

confidence: 99%

Design of Ku- and Ka-Band Flat Dual Circular Polarized Reflectarrays by Combining Variable Rotation Technique and Element Size Variation

Florencio

Martinez‐de‐Rioja

et al. 2020

Electronics

View full text Add to dashboard Cite

show abstract

“…Copolarization patterns of standard narrow flare angle and scalar corrugated horns are mainly determined by aperture diameter and flare angle, respectively, which are frequency dependent. Axially corrugated or axial-choke horns were developed to approach radial corrugation performance with geometries easier to manufacture, yielding high efficiency over an acceptable bandwidth [Kim et al, 2009], and thus are widely used in multiband satellite communication antenna systems [Granet et al, 2009;Chang and Hanlin, 2007]. They can help reduce feed blockage and reduce radome dimensions.…”

Section: Introductionmentioning

confidence: 99%

“…Radiation pattern calculation of prime feeds with small apertures and chokes, i.e., axial corrugation, was mainly based on full-wave simulation tools, such as moment methods, as discussed by Shafai and Kishk [1994]. For axially corrugated horns with wider flare angles and larger apertures, different full-wave numerical simulation methods were used for performance prediction, which are generally time consuming [Kim et al, 2009;Chang and Hanlin, 2007]. As introduced in Dubrovka and Stepanenko [1996] and James and Thomas [1982], horns with axial slots are represented as a number of separate modules.…”

Section: Introductionmentioning

confidence: 99%

Modal‐matching‐based analysis for axially corrugated dielectric‐rod‐loaded horn

Zhang

Qiu

2016

Radio Science

View full text Add to dashboard Cite

An efficient design procedure based on modal‐matching method for axially corrugated dielectric‐rod‐loaded horns of complicated geometries is proposed in this paper. Calculation of the generalized scattering matrix of individual module, which is obtained by dividing the complex horn into simple sections, is carried out. Analytic expressions of power‐coupling integrals between different kinds of waveguides are presented, including those derived initially, which greatly shorten the calculation time. Techniques including the field equivalence principle and the spherical mode expansion are further implemented for radiation pattern prediction. A rexolite‐loaded axially corrugated horn antenna is finally investigated as a numerical experiment, with the frequency range of 17–33 GHz. The results obtained by our method and by commercial full‐wave simulation software are in excellent agreement, but our method is more efficient.

show abstract

Design manufacture and test of Ka-band reflectarray antenna for trasmitting and receiving in orthogonal polarization

Encinar

Barba

2010

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics &Amp; The American Electromagnetics Confer

View full text Add to dashboard Cite

Commercial Ka and Ku bands reflector antennas

Cited by 6 publications

References 0 publications

Design of Ku- and Ka-Band Flat Dual Circular Polarized Reflectarrays by Combining Variable Rotation Technique and Element Size Variation

Design of Ku- and Ka-Band Flat Dual Circular Polarized Reflectarrays by Combining Variable Rotation Technique and Element Size Variation

Modal‐matching‐based analysis for axially corrugated dielectric‐rod‐loaded horn

Design manufacture and test of Ka-band reflectarray antenna for trasmitting and receiving in orthogonal polarization

Contact Info

Product

Resources

About