Conical and Broadside Beam Switching Micromachined Antenna at 26GHz

© 2022 IEEE.A pattern switchable micromachined antenna operating at 26 GHz is proposed. The antenna consists of a microstrip circular patch and a ring antenna placed concentrically. The antenna can switch between conical and broadside radiation patterns by exciting TM21 mode of the ring and TM11 mode of the circular patch, respectively. The ring is excited by two ports and the patch is excited parasitically. Two different techniques are proposed to switch between these patterns. In the first approach in phase and out of phase feeding of the antenna is employed whereas in the second approach both ports are fed in phase and the beam control is achieved by inserting two slots to the ring. The absence or presence of the slot can be controlled by placing a switch at the center of each slot. Hence, switches control pattern selection in this configuration.
2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022


Beam Switching Reflectarray Monolithically Integrated With RF MEMS Switches
Bayraktar, Omer; Aydın Çivi, Hatice Özlem; Akın, Tayfun (2012-02-01)
A reflectarray antenna monolithically integrated with 90 RF MEMS switches has been designed and fabricated to achieve switching of the main beam. Aperture coupled microstrip patch antenna (ACMPA) elements are used to form a 10 x 10 element reconfigurable reflectarray antenna operating at 26.5 GHz. The change in the progressive phase shift between the elements is obtained by adjusting the length of the open ended transmission lines in the elements with the RF MEMS switches. The reconfigurable reflectarray is...
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...
Pattern Reconfiguration of Microstrip Antennas by Controlling Slots in Its Ground Plane
Gök, Çaǧlar; Alatan, Lale (2022-01-01)
© 2022 IEEE.In this work, a pattern reconfigurable antenna with improved pattern diversity is proposed. The antenna is formed by placing a circular ring around a circular microstrip patch antenna and excited by using two feeds. The in-phase and out-of-phase excitation of these feeds provides conical beam and broadside radiation, respectively. Slots are introduced to the ground plane of the antenna to steer the main radiation direction in broadside radiation mode and to obtain asymmetric radiation in conical...
Directivity enhancehment of antipodal vivaldi antenna using broadband metasurface lens
Sayan, Gönül (2019-07-01)
© 2019 IEEE.In this work, radiation performance of an antipodal Vivaldi antenna is enhanced using a broadband metasurface lens structure in 1-6 GHz bandwidth. Radiation pattern for the new antenna is more directive due to electromagnetic properties of the metasurface lens. In order to create such a lens, electrically responsive unit cells with high effective permittivity values are utilized. Unit cell dimensions are adjusted to display no resonant behaviour in the designated bandwidth. Overall lens structur...
Frequency tunable microstrip patch antenna using RF MEMS technology
Erdıl, Emre; Topallı, Kagan; Unlu, Mehmet; Aydın Çivi, Hatice Özlem; Akın, Tayfun (2007-04-01)
A novel reconfigurable microstrip patch antenna is presented that is monolithically integrated with RF microelectromechanical systems (MEMS) capacitors for tuning the resonant frequency. Reconfigurability of the operating frequency of the microstrip patch antenna is achieved by loading it with a coplanar waveguide (CPW) stub on which variable MEMS capacitors are placed periodically. MEMS capacitors are implemented with surface micromachining technology, where a 1-mu m thick aluminum structural layer is plac...
Citation Formats
A. Berberoǧlu, F. T. Çelik, F. Görgülü, H. Ö. Aydın Çivi, and L. Alatan, “Conical and Broadside Beam Switching Micromachined Antenna at 26GHz,” presented at the 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022, Colorado, Amerika Birleşik Devletleri, 2022, Accessed: 00, 2023. [Online]. Available: