Miniature radiation pattern reconfigurable antenna for 2.4 GHz band

Adhikari, Manoj Singh; Warnick, Karl F.

doi:10.1109/aps.2010.5561236

Cited by 9 publications

(3 citation statements)

References 5 publications

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“…Based on reconfigurability of antenna characteristics it is classified into four basic categories-frequency reconfigurable antenna [1], polarization reconfigurable antenna [2], radiation pattern reconfigurable antenna [3], and hybrid (which is the combination of the any of the three other categories) [4]. Operating state of antenna can be realized using mechanical or physical alteration, reconfigurable biasing network or using different types of switches (pin diodes, varactor diodes, MEMS etc.)…”

Section: Introductionmentioning

confidence: 99%

A Frequency Reconfigurable Antenna with Six Switchable Modes for Wireless Application

Yadav¹,

Yadav²,

Sunita³

2016

Proceedings of the International Congress on Information and Communication Technology

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In this paper, a frequency switchable microstrip patch antenna with defected ground structure is presented. Frequency characteristics of this antenna can be switched between different frequency bands. Reconfigurability is achieved using different slots on ground structure and three PIN diodes loaded onto these slots as switches. By changing the PIN diode states to either ON or OFF, any particular slot on ground structure will be activated, hence making the antenna to be operable in six different modes which serves different frequency bands to be used for different wireless applications. Return loss, VSWR and gain are analyzed for different modes of operation. To design and simulate the proposed antenna CST microwave studio is used.

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Section: Introductionmentioning

confidence: 99%

A Frequency Reconfigurable Antenna with Six Switchable Modes for Wireless Application

Yadav¹,

Yadav²,

Sunita³

2016

Proceedings of the International Congress on Information and Communication Technology

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“…Multi-band reconfigurable antennas [24,25] are much needed in applications where secondary users make use of unoccupied frequency spectrum without affecting the primary users. Various reconfigurable antennas have been designed in the literature [26][27][28]. Many reconfigurable systems focus on varying frequency of operation while keeping the radiation pattern properties [29,30].…”

Section: Introductionmentioning

confidence: 99%

Design of a simple circularly polarised dual‐frequency reconfigurable microstrip patch antenna array for millimetre‐wave applications

Famoriji

Yang

et al. 2019

IET Microwaves, Antennas & Propagation

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Reconfigurable antenna array has received a lot of attention in present‐day wireless communication systems. In this study, a simple design of a four‐element circularly polarised dual‐frequency reconfigurable microstrip patch antenna array for millimetre‐wave applications is proposed. The sequentially rotated series–parallel stub approach is employed in the feeding network design to provide symmetrical array elements positioning, and bringing about a good axial ratio of polarisation. Additionally, a matching branch per element is employed to generate spatial flexibility for element positioning and good impedance matching. Furthermore, due to high‐cost constraints of Ka‐band RF switches (such as PE42524 SPDT), switches are considered as transmission lines, and are placed within the fractal slots of each elements to reconfigure the frequency. The proposed array operates in two switching states: ON and OFF. Hence, it allows dual‐frequency reconfigurability of 27 and 35 GHz for the ON and OFF states, respectively. A full array prototype was then fabricated on a Rogers R5880 substrate and tested in an anechoic chamber. Simulation and measurement results corroborate quite well in general. Patch antenna array gives much better result characterised by reconfigurable behaviour with associated return loss, radiation pattern characteristics, and ˂ 3 dB axial ratio polarisation bandwidth than the single element. The proposed antenna array finds good applications in radar systems, satellite communications, and aerospace.

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“…To resolve this issue researchers have proposed reconfigurable antennas [9][10][11][12][13]. These antennas resonate at different frequencies at different time by using switches therefore reduces the cost and overall size of the system.…”

Section: Introductionmentioning

confidence: 99%