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Design of wideband low profile Ku band antenna array
Abstract and Figures
Aperture coupled phased array antenna design at Ku band is introduced. The array spans entire Receive Band of Ku band (10.8 GHz - 12.75 GHz) and has a gain greater than 24.5 dBi with approximately 330×70×25 mm (LxWxH) dimensions. Low loss waveguide-microstrip type hybrid feed network is also designed and simulation results are presented. Aperture efficiency greater than 70% is achieved.
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... In the recent past, several dual/wideband designs have been reported in James (1989), Kumar (2002) Wong (2002) and Oweis (2015). Similarly, many patch designs have been investigated for Ku-band, such as rectangular patch with edge side cut feeding technique (Ranjan, 2018), slotted patch antenna using coaxial feed (Dubey, Pathak, & Modh, 2011;Kouhalvandi, Paker, & Yagci, 2015;Parikh, Pandey, & Sahoo, 2012;Prasad & Chattoraj, 2013), transmit array (Feng, Qu, Yang, Shen, & Zhao, 2018;Shalaby, Zainud-Deen, & Malhat, 2017), patch antenna of E-shape (Malisuwan, Sivaraks, Madan, & Suriyakrai, 2014), fractal patch antenna with microstrip feed (Hwang, Kim, & Nguyen Thi, 2013), multi-layer ring slot antenna (Khan, Yang, & Warnick, 2014), multi-layer microstrip patch array antenna (Kang et al., 2003;Li et al., 2012;Noh, Yun, Kim, & Jeon, 2004;Schippers et al., 2009), proximity-coupled patch antenna array (Renxin, Baoyu, & Chong, 2009;Trinh-Van, Kim, Kwon, & Hwang, 2013), aperture coupled planar array antenna (Azadegan, 2010;Bilgic, Yegin, Turkkan, & Sengiz, 2012), crosstype antenna array (Zhang, Mahe, & Razban, 2013), parasitic microstrip patch antenna with multiple layers (Guodong, Lixin, Chong, & Ning, 2013), antenna array with waveguide and hybrid microstrip feed (Bilgic & Yegin, 2014), slot antenna with microstrip feed (Basra, Goud, & Singh, 2014;Islam, Misran, & Mobashsher, 2010;Sayed, Ghonam, & Zekry, 2015), stacked microstrip antenna (Verpoorte et al., 2011;Yagli, Gokten, Kuzu, Ertok, & Gulgonul, 2015), dual cavity antenna (Asci, Pehlivan, & Yegin, 2018), microstrip patch antenna with orthogonal feed (Yang & Warnick, 2012), defected ground structure slot antenna (Bhadouria & Kumar, 2014;Kumari & Kumar, 2013), substrate integrated array antenna (Awida, Suleiman, & Fathy, 2010), a polygonal antenna with circular slot and coaxial feed (Harrabi, Osman, Gharsallah, Razban, & Mahé, 2014) and cross shape patch antenna with microstrip feed (Samsuzzaman, Islam, Misran, & Ali, 2014). ...
A low profile, small size, and lightweight dual-band antenna prototype is presented for satellite application (Ku- band). The proposed design meets the spectrum necessity of region 3 specified by International Telecommunication Union (ITU). The frequency band of 11.69-13.24 GHz and 13.72- 15.07 GHz are used for direct broadcast service (DBS) and fixed satellite service (FSS) in receive mode, and FSS in transmit mode, respectively. The antenna achieves the impedance bandwidth of 12.29 %, and 9.37 %, for first, and second band of frequency, respectively and also the axial ratio of 160 MHz (12.30 -12.46 GHz) is achieved by the design. The proposed design is fabricated and measured for various parameters such as Reflection coefficient, bandwidth, gain, and radiation pattern. Moreover, the complexity in realizing the design is less due to its single patch and a single layer.
A low profile, light weight, and low cost antenna for dual-band operation in Ku-band is presented for satellite applications. Antenna has broadside radiation pattern and it is a single-layer and single-patch antenna which has the added advantage of less complexity in realising the antenna. This dual-band antenna meets the requirement of International Telecommunication Union for region 3. Lower and upper band of antenna include the frequency band for fixed satellite services (FSS) and direct broadcasting satellite for receive mode and FSS for transmit mode, respectively. The proposed design provide 10% and 8% bandwidth in lower and upper band, respectively, with a low frequency ratio of 1.2.
Ku band reception systems for mobile platforms demand stringent requirements for the electrical and mechanical characteristics of the antenna. Limitations on height and weight for a rugged antenna design require a careful phased array antenna design. We present a new phased array antenna design capable of mechanical scanning in azimuth and electronic scanning in elevation. Non-resonant slot coupled patch antenna with a parasitic element on top is designed for wideband operation, which covers entire Ku band allocated for TV reception, and high gain. Single element, then, is formed in an array to meet target design specifications. The antenna has overall 31 dBi of gain when its beam is tilted to 45° elevation. Its feed network is optimized for this particular scanning angle and wideband operation. Considering the limited dimensions of the antenna, it exhibits excellent performance in terms of match, gain, and isolation among its polarization ports.
For enhanced communication on board of aircraft novel antenna systems with broadband satellite-based capabilities are required. The installation of such systems on board of aircraft requires the development of a very low-profile aircraft antenna, which can point to satellites anywhere in the upper hemisphere. To this end, phased array antennas which are conformal to the aircraft fuselage are attractive. In this paper two key aspects of conformal phased array antenna arrays are addressed: the development of a broadband Ku-band antenna and the beam synthesis for conformal array antennas. The antenna elements of the conformal array are stacked patch antennas with dual linear polarization which have sufficient bandwidth. For beam forming synthesis a method based on a truncated singular value decomposition is proposed.
This paper presents a simple broadband dual-polarized microstrip
antenna with only three layers. The input impedance bandwidth
(VSWR<2) of 25% is achieved with the double resonance technique, in
which the resonant frequencies of the patch and the coupling slot are
tuned near to each other. Proper positioning of the coupling slots and
the use of a thin, medium permittivity substrate results in high
isolation (>40 dB) between the ports and thus acceptable cross
polarization (better than -20 dB). The geometry, return loss, and the
isolation of a single antenna element and the radiation pattern of a
four-element linear array are presented. These antennas were designed
for the European DBS-band 10.70-12.75 GHz
A hierarchical modulation scheme is proposed to upgrade an existing digital broadcast system, such as satellite TV, or satellite radio, by adding more data in its transmission. The hierarchical modulation consists of a basic constellation, which is the same as in the original system, and a secondary constellation, which carries the additional data for the upgraded system. The upgraded system with the hierarchical modulation is backward compatible in the sense that receivers that have been deployed in the original system can continue receiving data in the basic constellation. New receivers can be designed to receive data carried in the secondary constellation, as well as those in the basic constellation. Analysis will be performed to show the tradeoff between bit rate of the data in secondary constellation and the penalty to the performance of receiving the basic constellation.
Equations, data and conclusions from many sources are compiled to define transmission characteristics. Discussions center on loss, circuit Q, dispersion, dimensional ratios, and moding.
Antenna fundamentals and definitions are examined, taking into account
electromagnetic fundamentals, the solution of Maxwell's equations for
radiation problems, the ideal dipole, the radiation pattern, directivity
and gain, reciprocity and antenna pattern measurements, antenna
impedance and radiation efficiency, antenna polarization, antennas in
communication links and radar, and the receiving properties of antennas.
Some simple radiating systems are considered along with arrays, line
sources, wire antennas, broadband antennas, moment methods, and aperture
antennas. High-frequency methods and aspects of antenna synthesis are
discussed, giving attention to geometrical optics, physical optics,
wedge diffraction theory, the ray-fixed coordinate system, the
cylindrical parabolic antenna, and linear array methods.
The authors present a highly manufacturable coupled line structure for MMICs (monolithic microwave integrated circuits) which uses embedded microstrip to achieve tight coupling and only uses the process steps necessary to make MIM (metal-insulator-metal) capacitors. Passive circuits demonstrated using this technique include a single-section 5-21-GHz broadband 3-dB coupler and a 6-15-GHz 90 degrees Schiffman section. The coupler and the Schiffman section use tight (2-dB) to extremely tight (0.7-dB) coupling factors, respectively. This is the first time that a coupler has achieved such a wide bandwidth on a 125- mu m-thick GaAs substrate.
The radiation and losses in microstrip antennas with a corporate
feed network are studied. A surface current approach is applied in which
the electrical currents in the feed lines are modeled as in ideal
transmission lines. The free-space radiation and the surface-wave
excitation of typical segments in printed feed networks are studied. A
four-element array antenna with its printed feed network is analyzed and
predicted radiation patterns, directivity, and gain are presented and
compared with experimental results. The gain and directivity of large
arrays of 16, 64, 256 and 1024 elements are calculated and measurements
in the frequency range of 10 to 35 GHz are reported
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- A Lehto
- W L Stutzman
- G J Thiele7 ] I
- D K Bahl
- Trivedi
S. Hienonen, A. Lehto, and A. V. Rä
Polarized Aperture Coupled Microstr
Propagation Society International Sym
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W. L. Stutzman and G. Thiele, " A
Edition, Wily & Sons, ISBN-10: 0471
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