Beam Switching Reflectarray Monolithically Integrated With RF MEMS Switches

Bayraktar, Ömer; Çivi, Özlem Aydın; Akın, Tayfun

doi:10.1109/tap.2011.2173099

Cited by 139 publications

(56 citation statements)

References 22 publications

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“…To manage the complexity of this system, the unit cell for this RRA consists of microstrip patch directly connected to a 1-bit reflective transmission line embedding a p-i-n diode. MEMS technology has also been also considered here, and a fully-operational monolithic MEMS RRA at 26 GHz was designed and fabricated [71], while cells using surface mount MEMS elements were also implemented [72]. In both cases thermal losses were several dB despite the use of MEMS technology, which is below the performance that can be achieved using MEMS technology and the tunable resonator approach [40].…”

Section: B Guided-wave Approachmentioning

confidence: 99%

Reconfigurable Reflectarrays and Array Lenses for Dynamic Antenna Beam Control: A Review

Hum

Perruisseau‐Carrier

2014

IEEE Trans. Antennas Propagat.

734

413

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Abstract-Advances in reflectarrays and array lenses with electronic beam-forming capabilities are enabling a host of new possibilities for these high-performance, low-cost antenna architectures. This paper reviews enabling technologies and topologies of reconfigurable reflectarray and array lens designs, and surveys a range of experimental implementations and achievements that have been made in this area in recent years. The paper describes the fundamental design approaches employed in realizing reconfigurable designs, and explores advanced capabilities of these nascent architectures, such as multi-band operation, polarization manipulation, frequency agility, and amplification. Finally, the paper concludes by discussing future challenges and possibilities for these antennas.

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Section: B Guided-wave Approachmentioning

confidence: 99%

Reconfigurable Reflectarrays and Array Lenses for Dynamic Antenna Beam Control: A Review

Hum

Perruisseau‐Carrier

2014

IEEE Trans. Antennas Propagat.

734

413

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“…Their mechanical switching action and higher cutoff frequency makes them superior to other semiconductor switches. Their salient features include good linearity, very low insertion loss in ON state and high isolation in OFF state [5][6][7][8]. RF MEMS switches with good performance have shown anticipated commercial production in specific RF applications.…”

Section: Introductionmentioning

confidence: 99%

An Ultra Wideband, Novel and Reliable RF MEMS Switch

Jha¹,

Gogna²,

Gaba³

et al. 2016

Transactions on Electrical and Electronic Materials

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This paper presents the design and characterization of wide band ohmic microswitch with an actuation voltage as low as 20~25 V, and a restoring force of 14.1 μN. The design of the proposed switch is primarily composed of an electrostatic actuator, bridge membrane, cantilever (beam) and coplanar waveguide, suspended over the substrate. The analysis shows an insertion loss of -0.002 dB at 1GHz and remains as low as -0.35 dB, even at 100 GHz. The isolation loss of the switch is sustained at -21.09 dB at 100GHz, with a peak value of -99.58 dB at 1 GHz and up-state capacitance of 4 fF. To our knowledge, this is the first demonstration of a series contact switch, which works over a wide bandwidth (DC-100 GHz) and with such a high and sustained isolation, even at high frequencies and with an excellent figure of merit (f c =1/2.pi.Ron.Cu= 39.7 THz).

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“…The reflection phase from the reflectarray elements are designed so that the reflected energy from the array is collimated to form a main beam in a given direction or to generate a shaped beam in the coverage area. The phase of the reflected field can be changed by varying the size of the resonating patches [1,2], by a transmission line of proper length connected [3,4] or aperture-coupled to the patches [5][6][7], or adding active elements to the antenna [8][9][10][11] like MEMs-based structures [12], varactor loaded patches [13,14], PIN diodes [15][16][17][18][19][20][21] or liquid crystal based structures [22].…”

Section: Introductionmentioning

confidence: 99%