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854 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 60, NO. 2, FEBRUARY 2012 Beam Switching Reflectarray Monolithically
 

Summary: 854 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 60, NO. 2, FEBRUARY 2012
Beam Switching Reflectarray Monolithically
Integrated With RF MEMS Switches
Omer Bayraktar, Ozlem Aydin Civi, Senior Member, IEEE, and Tayfun Akin, Member, IEEE
Abstract--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 an-
tenna (ACMPA) elements are used to form a 10 10 element recon-
figurable 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 reflec-
tarray is monolithically fabricated with the RF MEMS switches in
an area of 42.46 cm using an in-house surface micromachining
and wafer bonding process. The measurement results show that
the main beam can be switched between broadside and 40 in the
H-plane at 26.5 GHz.
Index Terms--Reflectarray antennas, reconfigurable antennas,
micro-electro-mechanical systems (MEMS) switches, microstrip
antennas.

  

Source: Akin, Tayfun - Department of Electrical and Electronics Engineering, Middle East Technical University

 

Collections: Engineering