Hexagonal- Pixel Surfaces for the Reconfiguration of Inkjet-Printed Antennas

2018-11-02
Guler, Sadri
Ceylan, Hasan Akin
Ergül, Özgür Salih
We present a new method for the reconfiguration of inkjet-printed antennas to make them operate at different frequencies while matching to different impedances other than originally designed. Suitable antennas are modified by replacing conventional ground planes with patterned structures involving optimal arrangements of hexagonal cells. The cells are switched on or off, while the optimal distributions are found via genetic algorithms to reach desired characteristics. A full-wave solver is used for the required analysis in the optimization trials without sacrificing the accuracy. The antennas are fabricated by using a low-cost inkjet-printing setup to demonstrate the effectiveness of the approach, particularly in the context of radio-frequency-identification applications.
18th Mediterranean Microwave Symposium (MMS)

Suggestions

Inkjet-Printed Pixel Antennas with Hexagonal Cells
Karaosmanoglu, Bariscan; Guler, Sadri; İbili, Hande; Ergül, Özgür Salih (2017-03-24)
We present a new type of pixel antennas involving hexagonal unit cells that are suitable for fabrication in low-cost inkjet-printing setups. Antennas are optimized in a rigorous simulation environment based on the multilevel fast multipole algorithm integrated into genetic algorithms. Hexagonal cells are suitable for both the optimization environment and fabrication setup. Optimizations are performed particularly to design radio-frequency-identification tags, by removing pixels from a given template to achi...
Three Dimensional Microfabricated Broadband Patch and Multifunction Reconfigurable Antennae for 60 GHz Applications
Hunerli, H. V.; Mopidevi, H.; Cagatay, E.; Imbert, M.; Romeu, J.; Jofre, L.; Cetiner, B. A.; BIYIKLI, NECMİ (2015-05-17)
In this paper we present two antenna designs capable of covering the IEEE 802.11ad (WiGig) frequency band (57-66 GHz and 59-66 GHz respectively). The work below reports the design, microfabrication and characterization of a broadband patch antenna along with the design and microfabrication of multifunction reconfigurable antenna (MRA) in its static form excluding active switching. The first design is a patch antenna where the energy is coupled with a conductor-backed (CB) coplanar waveguide (CPW)-fed loop s...
Wideband omnidirectional and sector coverage antenna arrays for base stations
Alatan, Lale (2018-01-01)
By using parallel strip line fed printed dipole antennas as array elements, an omnidirectional antenna array and a wide angle sector coverage array operating in octave band are designed. A maximum deviation of ±1.25 dB from the omnidirectional pattern is achieved for the omnidirectional array, and the average gain of the antenna was measured as being 5 dB in the 1.35–2.7GHz band. For the sector coverage array, a special reflector design is utilized to maintain a half power beam width of around 115◦ with a s...
Reconfigurable Reflectarrays: Design, Analysis and Fabrication
Aydın Çivi, Hatice Özlem (2015-05-17)
Reflectarray antennas combine the advantages of both reflector and phased array antennas. Therefore, they offer low-loss, low-cost solutions for the high gain, beam steering and beam shaping applications. First the current progress and future perspectives regarding the design and analysis of reflectarrays are discussed. Then, recent technological developments and techniques that are used to realize reconfigurability in reflectarrays are presented.
Design and analysis of ultra-wideband (UWB) printed monopole antennas of circular shape
Karadağ, Serkan; Aydın Çivi, Hatice Özlem; Department of Electrical and Electronics Engineering (2017)
This study proposes three microstrip line fed circular monopole antennas with ultra-wideband (UWB) characteristics, improved omnidirectional radiation pattern and WLAN (5 GHz-6 GHz) band notched characteristics for wireless and mobile communication systems. In this thesis, first, a microstrip line fed ultra-wideband ring monopole antenna with improved omnidirectional radiation pattern is designed, fabricated and measured. Two corners are tapered on the ground plane for increasing impedance bandwidth. In ord...
Citation Formats
S. Guler, H. A. Ceylan, and Ö. S. Ergül, “Hexagonal- Pixel Surfaces for the Reconfiguration of Inkjet-Printed Antennas,” presented at the 18th Mediterranean Microwave Symposium (MMS), Istanbul, TURKEY, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39910.