MEMS Reconfigurable Optimized E-Shaped Patch Antenna Design for Cognitive Radio

Rajagopalan, Harish; Kovitz, Joshua M.; Rahmat‐Samii, Y.

doi:10.1109/tap.2013.2292531

Cited by 168 publications

(106 citation statements)

References 27 publications

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“…Different electronic components as pin diodes, FETs and MEMS are used to build an RF switch utilized for frequency reconfigurable antennas [17,[26][27]. The MEMS-based RF switches are useful where low loss and high isolation is required.…”

Section: Modeling Of Pin Diode Rf Switch In Hfssmentioning

confidence: 99%

Modeling of a PIN Diode RF Switch for Re configurable Antenna Application

2018

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The paper proffers the procedure to model a PIN diode RF switch using full-wave EM solver, HFSS and utilizes the switch to built a simple partial ground plane antenna with omnidirectional radiation pattern. The proposed antenna has ability to tune it from ultra-wideband to narrowband mode. The frequency reconfigurability is accomplished by incorporating a rectangular slot resonator and a PIN diode RF switch embedded in the partial ground plane. The antenna demonstrates -10 dB impedance bandwidth from 500 MHz to 6 GHz in the ultra-wideband mode and 1.125 GHz to 2 GHz in the narrowband mode. A parasitic is stacked in the ground plane to improve the impedance matching and a rectangular slot is fused to explore the bandwidth-limiting possibility of the antenna. The optimization of the antenna is done by full-wave EM solver, HFSS and Specific Absorption Rate (SAR) of the antenna is examined using the equivalent flat tissue phantom. A prototype of the proposed antenna is fabricated and execution is accepted by measured results. The proposed antenna has simple and miniature structure, low SAR (0.41 W/Kg), omnidirectional pattern and low cross-polarization (<-15dB in E-plane and <-30dB in H-plane).

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Section: Modeling Of Pin Diode Rf Switch In Hfssmentioning

confidence: 99%

Modeling of a PIN Diode RF Switch for Re configurable Antenna Application

2018

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“…The optimization of the reconfigurable antenna parameters, in fact, have been mentioned in several articles 1859-378X-2017-1202 c 2017 REV [13][14][15][16][17]. In these works, the parameters are selected in each configuration separately thanks to different techniques such as Particle Swarm (PS) [13], Neural Network [14], Clonal Selection Algorithm (CSA) [15] and Genetic Algorithms (GA) [16,17].…”

Section: Introductionmentioning

confidence: 99%

“…In these works, the parameters are selected in each configuration separately thanks to different techniques such as Particle Swarm (PS) [13], Neural Network [14], Clonal Selection Algorithm (CSA) [15] and Genetic Algorithms (GA) [16,17]. Nevertheless the optimization process should be taken into account on all configurations simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Low Profile Frequency Reconfigurable PIFA Antenna using Defected Ground Structure

Minh¹,

Duc²,

Vu³

et al. 2017

REV J. Electron. Commun.

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Abstract-In this paper, we design and implement a low profile frequency reconfigurable Planar Inverted-F Antenna (PIFA) for WLAN, m-WiMAX and UMTS applications. Different from several conventional designs, the air layer in our antenna is removed, while the radiator patches and the ground plane are printed on two sides of the same substrate. This makes the antenna structure thin and lightweight. The defected ground structure (DGS) and coplanar sorting-trips are also designed for adjusting lower operating frequencies without increasing the antenna's size. Three PIN-diodes are used in appropriate positions for accurate switches between frequency bands. Moreover, the three radiator patches' parameters are optimally selected on all configurations using Genetic Algorithm (GA). Simulation results show that depending on the ON/OFF states of the PIN-diodes, the antenna can operate in three applicable frequency bands, i.e., 2.1 GHz, 2.4 GHz, and 3.5 GHz with the corresponding peak gains of 0.48 dBi, 3.55 dBi, and 4.33 dBi. The antenna occupies an overall size of 63.5×33.5×1.6 mm 3 , which can be easily fabricated and integrated into small wireless devices. Simulated and measured results are also compared to validate the correctness of the antenna design.

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“…Varactors diodes are used to tune the position of notch bands [15][16] by changing the capacitance value of varactor diode using applied voltage and MEMS are utilized to lower DC power consumption and fast switching time but has fabrication complexity as compared to pin diode and varactor diode [17][18]. The proposed work uses the slot technique to design compact reconfigurable triple band rejection antenna with bandwidth more than the ultra-wideband.…”

Section: Introductionmentioning

confidence: 99%

Uwb Antenna With Reconfigurable Triple Band Notched Characteristics for Cognitive Radio

Kholapure¹,

Karandikar²

2017

IJCT

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A novel printed circular monopole antenna with bandwidth more than ultra-wide band along with reconfigurable single, dual and triple notch band is presented. The antenna provides bandwidth of 3.04 -17.2 GHz by generating additional resonances towards higher end with modified ground structure. Moreover, the reconfigurable notches at WiMAX, WLAN and downlink of X band satellite communication are designed using slot technique to reduce interference at these wireless services if present. Thus, designed antenna provides a good solution for spectrum sensing and dynamic spectrum access as required in cognitive radios. The reconfiguration of notch bands is experimented using 0 ohm surface mounted resistors to show RF switching.

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MEMS Reconfigurable Optimized E-Shaped Patch Antenna Design for Cognitive Radio

Cited by 168 publications

References 27 publications

Modeling of a PIN Diode RF Switch for Re configurable Antenna Application

Modeling of a PIN Diode RF Switch for Re configurable Antenna Application

Low Profile Frequency Reconfigurable PIFA Antenna using Defected Ground Structure

Uwb Antenna With Reconfigurable Triple Band Notched Characteristics for Cognitive Radio

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