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Journal articles on the topic 'RF MEMS and Reconfigurable Antennas'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Yeom, Insu, Junghan Choi, Sung-su Kwoun, Byungje Lee, and Changwon Jung. "Analysis of RF Front-End Performance of Reconfigurable Antennas with RF Switches in the Far Field." International Journal of Antennas and Propagation 2014 (2014): 1–14. http://dx.doi.org/10.1155/2014/385730.

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The RF front-end performances in the far-field condition of reconfigurable antennas employing two commonly used RF switching devices (PIN diodes and RF-MEMS switches) were compared. Two types of antennas (monopole and slot) representing general direct/coupled feed types were used for the reconfigurable antennas to compare the excited RF power to the RF switches by the reconfigurable antenna types. For the switching operation of the antennas, a biasing circuit was designed and embedded in the same antenna board, which included a battery to emphasize the antenna’s adaptability to mobile devices. The measurement results of each reconfigurable antenna (radiation patterns and return losses) are presented in this study. The receiving power of the reference antenna was measured by varying the transmitting power of the reconfigurable antennas in the far-field condition. The receiving power was analyzed using the “Friis transmission equation” and compared for two switching elements. Based on the results of these measurements and comparisons, we discuss what constitutes an appropriate switch device and antenna type for reconfigurable antennas of mobile devices in the far-field condition.

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2

Gong, Liang, King Yuk Chan, Yi Yang, and Rodica Ramer. "RF MEMS for Reconfigurable RF Front-End: Research in Australia." Advanced Materials Research 901 (February 2014): 105–10. http://dx.doi.org/10.4028/www.scientific.net/amr.901.105.

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This paper reviews some ground breaking development of RF MEMS technology in Australia at the UNSW, over the past decade. It presents some unique and novel designs using RF MEMS switches to achieve reconfigurable RF front-end circuits. These designs include multiport RF MEMS switches, switch matrices, reconfigurable filters and antennas. The resulting devices achieved RF performance that is unmatched by any existing RF andmicrowave technologies.

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3

Sorrentino, Roberto, Paola Farinelli, Alessandro Cazzorla, and Luca Pelliccia. "RF-MEMS Application to RF Tuneable Circuits." Advances in Science and Technology 100 (October 2016): 100–108. http://dx.doi.org/10.4028/www.scientific.net/ast.100.100.

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The bursting wireless communication market, including 5G, advanced satellite communication systems and COTM (Communication On The Move) terminals, require ever more sophisticated functions, from multi-band and multi-function operations to electronically steerable and reconfigurable antennas, pushing technological developments towards the use of tunable microwave components and circuits. Reconfigurability allows indeed for reduced complexity and cost of the apparatuses. In this context, RF MEMS (Micro-Electro-Mechanical-Systems) technology has emerged as a very attractive solution to realize both tunable devices (e.g. variable capacitors, inductors and micro-relays), as well as complex circuits (e.g. tunable filters, reconfigurable matching networks and reconfigurable beam forming networks for phased array antennas). High linearity, low loss and high miniaturization are the typical advantages of RF MEMS over conventional technologies. Micromechanical components fabricated via IC-compatible MEMS technologies and capable of low-loss filtering, switching and frequency generation allow for miniaturized wireless front-ends via higher levels of integration. In addition, the inherent high linearity of the MEMS switches enables carrier aggregations without introducing intermodulation distortions. This paper will review the recent advances in the development of the RF MEMS to RF tunable circuits and systems.

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4

Tian, Wenchao, Qiang Chao, and Jing Shi. "Reconfigurable Antennas Based on RF MEMS Switches." Recent Patents on Mechanical Engineering 9, no. 3 (August 29, 2016): 230–40. http://dx.doi.org/10.2174/2212797609666160712230734.

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5

Motovilova, Elizaveta, and Shao Ying Huang. "A Review on Reconfigurable Liquid Dielectric Antennas." Materials 13, no. 8 (April 16, 2020): 1863. http://dx.doi.org/10.3390/ma13081863.

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The advancements in wireless communication impose a growing range of demands on the antennas performance, requiring multiple functionalities to be present in a single device. To satisfy these different application needs within a limited space, reconfigurable antennas are often used which are able to switch between a number of states, providing multiple functions using a single antenna. Electronic switching components, such as PIN diodes, radio-frequency micromechanical systems (RF-MEMS), and varactors, are typically used to achieve antenna reconfiguration. However, some of these approaches have certain limitations, such as narrow bandwidth, complex biasing circuitry, and high activation voltages. In recent years, an alternative approach using liquid dielectric materials for antenna reconfiguration has drawn significant attention. The intrinsic conformability of liquid dielectric materials allows us to realize antennas with desired reconfigurations with different physical constraints while maintaining high radiation efficiency. The purpose of this review is to summarize different approaches proposed in the literature for the liquid dielectric reconfigurable antennas. It facilitates the understanding of the advantages and limitations of this technology, and it helps to draw general design principals for the development of reconfigurable antennas in this category.

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6

Tian, Wenchao, Daowei Wu, Qiang Chao, Zhiqiang Chen, and Yongkun Wang. "Application of genetic algorithm in M × N reconfigurable antenna array based on RF MEMS switches." Modern Physics Letters B 32, no. 30 (October 30, 2018): 1850365. http://dx.doi.org/10.1142/s0217984918503657.

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With the continuous development of the wireless communication, a device needs to integrate multiple antennas, which will lead to increased volume, increased cost, electromagnetic compatibility problems and increased weight. This paper presents a [Formula: see text] reconfigurable antenna array based on RF MEMS switches. The modeling script of [Formula: see text] reconfigurable antenna array is written in MATLAB by using MATLAB-HFSS-API. In order to quickly get a switch array with target frequency, genetic algorithm is applied to [Formula: see text] reconfigurable antenna array. Taking the [Formula: see text] reconfigurable antenna array as an example, a switch array with the resonant frequency of 3.81 GHz is searched from its 4096 switch arrays. The switch array found by genetic algorithm is 1 1 0 0 1 0 0 1 1 0 1 0. The resonant frequency and S11 parameter of this switch array is 3.81 GHz and −20.96 dB. The search takes 6.77 h and the efficiency is 17 times of the simulating all switch arrays.

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7

Zhou, Lei, Satish K. Sharma, and Samuel K. Kassegne. "Reconfigurable microstrip rectangular loop antennas using RF MEMS switches." Microwave and Optical Technology Letters 50, no. 1 (2007): 252–56. http://dx.doi.org/10.1002/mop.23042.

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8

Zohur, A., H. Mopidevi, D. Rodrigo, M. Unlu, L. Jofre, and Bedri A. Cetiner. "RF MEMS Reconfigurable Two-Band Antenna." IEEE Antennas and Wireless Propagation Letters 12 (2013): 72–75. http://dx.doi.org/10.1109/lawp.2013.2238882.

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9

Carrasco, Eduardo, Mariano Barba, Manuel Arrebola, and Jose A. Encinar. "Recent Developments of Reflectarray Antennas for Reconfigurable Beams Using Surface-Mounted RF-MEMS." International Journal of Antennas and Propagation 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/386429.

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Some of the most recent developments in reconfigurable reflectarrays using surface-mounted RF-MEMS, which have been developed at the Universidad Politécnica de Madrid, are summarized in this paper. The results include reconfigurable elements based on patches aperture-coupled to delay lines in two configurations: single elements and gathered elements which form subarrays with common phase control. The former include traditional aperture-coupled elements and a novel wideband reflectarray element which has been designed using two stacked patches. The latter are proposed as a low cost solution for reducing the number of electronic control devices as well as the manufacturing complexity of large reflectarrays. The main advantages and drawbacks of the grouping are evaluated in both pencil and shaped-beam antennas. In all the cases, the effects of the MEMS switches and their assembly circuitry are evaluated when they are used in a 2-bit phase shifter which can be extended to more bits, demonstrating that the proposed elements can be used efficiently in reconfigurable-beam reflectarrays.

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10

Sanchez-Escuderos, D., M. Ferrando-Bataller, M. Baquero-Escudero, and J. I. Herranz. "Reconfigurable Slot-Array Antenna With RF-MEMS." IEEE Antennas and Wireless Propagation Letters 10 (2011): 721–25. http://dx.doi.org/10.1109/lawp.2011.2161973.

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11

Monne, Mahmuda Akter, Xing Lan, Chunbo Zhang, and Maggie Yihong Chen. "Inkjet-Printed Flexible MEMS Switches for Phased-Array Antennas." International Journal of Antennas and Propagation 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/4517848.

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This paper presents a fully inkjet-printed flexible MEMS switch for phased-array antennas. The physical structure of the printed MEMS switch consists of an anchor with a clamp-clamp beam, a sacrificial layer, and bottom transmission lines. 5-mil Kapton® polyimide film is used as a flexible substrate material. Two different types of conductive ink PEDOT : PSS from Sigma Aldrich and silver nanoparticle ink from NovaCentrix are used for the fabrication of different printed layers. Layer-by-layer fabrication process and material evaluation are illustrated. Layer characterization is done with respect to critical thickness and resistance using 2D/3D material analysis. Fujifilm Dimatix Material Printer (DMP-2800) is used for fabrication, and KLA-Tencor (P-7) profiler is used for 2D and 3D analysis of each layer. The MEMS switch has a low actuation voltage of 1.2 V, current capacity of 0.2195 mA, a current on-off ratio of 2195 : 1, and an RF insertion loss of 5 dB up to 13.5 GHz. Printed MEMS switch technology is a promising candidate for flexible and reconfigurable phased-array antennas and other radio frequency (RF) and microwave frequency applications.

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12

Pourziad, Ali, Saeid Nikmehr, and Hadi Veladi. "A NOVEL MULTI-STATE INTEGRATED RF MEMS SWITCH FOR RECONFIGURABLE ANTENNAS APPLICATIONS." Progress In Electromagnetics Research 139 (2013): 389–406. http://dx.doi.org/10.2528/pier13012303.

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13

Vinoy, K. J., and V. K. Varadan. "Design of reconfigurable fractal antennas and RF-MEMS for space-based systems." Smart Materials and Structures 10, no. 6 (November 28, 2001): 1211–23. http://dx.doi.org/10.1088/0964-1726/10/6/310.

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14

Khalichi, Bahram, Saeid Nikmehr, and Ali Pourziad. "RECONFIGURABLE SIW ANTENNA BASED ON RF-MEMS SWITCHES." Progress In Electromagnetics Research 142 (2013): 189–205. http://dx.doi.org/10.2528/pier13070204.

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15

Cetiner, B. A., G. R. Crusats, L. Jofre, and N. Biyikli. "RF MEMS Integrated Frequency Reconfigurable Annular Slot Antenna." IEEE Transactions on Antennas and Propagation 58, no. 3 (March 2010): 626–32. http://dx.doi.org/10.1109/tap.2009.2039300.

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16

Jain, Priyanka, and Shubhi Jain. "Reconfigurable RF MEMS PIFA Antenna: A Review Study." SKIT Research Journal 11, no. 3 (September 13, 2021): 51. http://dx.doi.org/10.47904/ijskit.11.3.2021.51-54.

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17

Deng, Zhong Liang, Man Zu Hong, and Yi Dong Yao. "Ka-Band Wideband Pattern Reconfigurable Microstrip Patch Antenna with RF MEMS Switches." Applied Mechanics and Materials 39 (November 2010): 146–50. http://dx.doi.org/10.4028/www.scientific.net/amm.39.146.

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A Ka-band microstip patch antenna with the functions of switchable pattern is presented. The antenna structure is composed of three rectangular patches and four radio frequency microelectro-mechanical system (RF MEMS) switches. The switches are placed to connect the center patch with other two ones, with two switches on the top edge of the center patch and others on the bottom edge. By controlling the states of the RF MEMS switches, the proposed antenna can radiate two patterns. Moreover, the switchable functions are operated at the same frequency band with a bandwidth of 30.9%. Simulated results by Ansoft HFSS are given.

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18

Rana, Sardar Masud, Rashed Al Amin, Nasrul Hoque Mia, Samioul Hasan Talukder, and Anzan Uz Zaman. "Implementation of Low Voltage Rf Mems Switch with Different Material for Reconfigurable Antennas." Asian Journal of Applied Science and Engineering 3, no. 8 (August 1, 2014): 7. http://dx.doi.org/10.15590/ajase/2014/v3i8/54477.

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19

Deng, Zhong Liang, Hua Gong, Sen Fan, and Cai Hu Chen. "Ka-Band Radiation Pattern Reconfigurable Microstrip Patch Antenna Employing MEMS Switches." Applied Mechanics and Materials 411-414 (September 2013): 1674–79. http://dx.doi.org/10.4028/www.scientific.net/amm.411-414.1674.

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This article describes the design of a microstrip patch antenna with radiation pattern reconfigurable characteristic, where two monolithically integrated MEMS switches are utilized. By changing the physical dimension of the antenna, its radiation pattern could be changed. Moreover, we present detailed structures of these RF MEMS switches, whose isolation and insertion loss are-23.12 dB and-0.09 dB at operating frequency, respectively. And the resonant frequency of the antenna is 35.4 GHz and the bandwidth is 6.69%. All the results are simulated.

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20

Anand, S., and J. Josephine Pon Gloria. "RF MEMS Based Reconfigurable Rectangular Slotted Self Similar Antenna." Circuits and Systems 07, no. 06 (2016): 859–76. http://dx.doi.org/10.4236/cs.2016.76074.

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21

Huff, G. H., and J. T. Bernhard. "Integration of Packaged RF MEMS Switches With Radiation Pattern Reconfigurable Square Spiral Microstrip Antennas." IEEE Transactions on Antennas and Propagation 54, no. 2 (February 2006): 464–69. http://dx.doi.org/10.1109/tap.2005.863409.

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22

Deng, Zhong Liang, and Han Moran. "Design and Simulation of a Ka-Band Pattern Reconfigurable Microstrip Patch Antenna." Advanced Materials Research 875-877 (February 2014): 1170–75. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.1170.

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This letter presents a Ka-band(26.5GHz-40GHz) microstrip patch antenna with pattern reconfigurable characteristic. The antenna is provided with five rectangular patches and four RF MEMS (microelectromechanical systems for RF circuits) switches. The central patch and other surrounding patches are connected by the switches. By changing the states of the switches, the antenna can achieve four radiation patterns and it is designed and simulated by using Ansoft HFSS. In addition, the different states are operated at the same centre frequency of 35GHz and the gain of the main radiation direction is about 7.5dB

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23

Sahar, N. M., M. T. Islam, N. Misran, and M. R. Zaman. "Development of Reconfigurable Antenna for Advanced Tracking Technology." Indonesian Journal of Electrical Engineering and Computer Science 10, no. 2 (May 1, 2018): 672. http://dx.doi.org/10.11591/ijeecs.v10.i2.pp672-679.

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<p>This paper focuses on the design and fabrication of reconfigurable multiband antenna for RFID and GPS as an advance tracking technology for various applications that achieve a physically compact, planar profile and sufficient bandwidth. The antenna can be reconfigured as single band at 1.275 GHz for GPS applications when the switches are OFF state and dual-band frequencies at 0.915 GHz and 2.4 GHz required in RFID applications when the switches are ON state. The performance of the antenna involves changing the switches to ON or OFF mode by controlling RF switches. RF MEMs RMSW101, Single Pole Single Throw (SPST) switches have been chosen due to the satisfactory RF properties includes low insertion loss, good impedance matching and high isolation. The gain for single and dual band is greater than 2dBi. The design methodology and antenna measurement results are both presented and discussed in this letter.</p>

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24

Jung, Chang Won, Byungje Lee, and Franco De Flaviis. "In-line RF-MEMS series switches for reconfigurable antenna applications." Microwave and Optical Technology Letters 49, no. 12 (2007): 3130–34. http://dx.doi.org/10.1002/mop.22971.

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25

Jang, Youngsoo, Jaehyurk Choi, and Sungjoon Lim. "Frequency reconfigurable zeroth-order resonant antenna using RF MEMS switch." Microwave and Optical Technology Letters 54, no. 5 (March 13, 2012): 1266–69. http://dx.doi.org/10.1002/mop.26803.

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26

Younes Karfa Bekali, Younes Karfa Bekali. "Reconfigurable Microstrip Patch Antenna for Frequency Diversity Using RF MEMS." IOSR Journal of Electronics and Communication Engineering 6, no. 3 (2013): 40–43. http://dx.doi.org/10.9790/2834-0634043.

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27

Xu, Yongqing, Ying Tian, Binzhen Zhang, Junping Duan, and Li Yan. "A novel RF MEMS switch on frequency reconfigurable antenna application." Microsystem Technologies 24, no. 9 (March 28, 2018): 3833–41. http://dx.doi.org/10.1007/s00542-018-3863-9.

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28

Meng, Xin. "Small-Size Eight-Band Frequency Reconfigurable Antenna Loading a MEMS Switch for Mobile Handset Applications." International Journal of Antennas and Propagation 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/143415.

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A planar small-size eight-band frequency reconfigurable antenna for LTE/WWAN mobile handset applications is proposed. The proposed antenna consists of a feeding strip and a coupled strip, with a total dimension of 10 × 29.5 mm2. Reconfigurability is realized by incorporating a one-pole four-throw RF switch, which is embedded in the coupled strip and changes the resonant modes for the lower band. By combining four different working modes, the proposed antenna successfully realize the eight-band operation, covering the operating bands of 700~787 MHz, 824~960 MHz, and 1710~2690 MHz. In addition, the simple DC bias circuit of the RF switch has little effect on the antenna performances, with no significant reduction in antenna efficiency and variations in the radiation patterns. The measured antenna efficiencies are 40%~50% and over 60% for the lower band and the upper band, respectively. Prototypes of the proposed frequency reconfigurable antenna incorporating the one-pole four-throw switch are fabricated and measured. The measured results including return losses and radiation characteristics are presented.

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29

., H. Divya. "STUDY AND ANALYSIS OF RF MEMS SHUNT SWITCH FOR RECONFIGURABLE ANTENNA." International Journal of Research in Engineering and Technology 03, no. 04 (April 25, 2014): 621–24. http://dx.doi.org/10.15623/ijret.2014.0304110.

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30

Anagnostou, Dimitris E., Michael T. Chryssomallis, Benjamin D. Braaten, John L. Ebel, and Nelson Sepulveda. "Reconfigurable UWB Antenna With RF-MEMS for On-Demand WLAN Rejection." IEEE Transactions on Antennas and Propagation 62, no. 2 (February 2014): 602–8. http://dx.doi.org/10.1109/tap.2013.2293145.

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31

Goel, Shivam, and Navneet Gupta. "Design, optimization and analysis of reconfigurable antenna using RF MEMS switch." Microsystem Technologies 26, no. 9 (March 27, 2020): 2829–37. http://dx.doi.org/10.1007/s00542-020-04823-8.

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32

Deng, Zhong Liang, Yi Dong Yao, and Man Zu Hong. "Design of a Ka Band Microstrip Patch Antenna with Pattern Reconfigurable Characteristic." Applied Mechanics and Materials 39 (November 2010): 126–30. http://dx.doi.org/10.4028/www.scientific.net/amm.39.126.

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This letter presents a novel microstrip patch antenna operating in the Ka band (26.5GHz-40GHz) with pattern reconfigurable characteristic. The antenna is provided with one circle patch, two arc patches and four parasitic rectangular patches. The centre patch is connected with the arc patch by a RF MEMS (microelectromechanical systems for RF circuits) switch. The beam can scan in the E-plane by switching the states of the antenna, which is implemented by changing the states of the switches installed in the gap between the patches. Different states of the antenna have different radiation patterns. The two states share the same operating band of 35.6-37.9GHz with the centre frequency of 36.6GHz and their maximum radiation directions are -38° and +37° respectively. The antenna can be applied in radar, satellite, security communications, etc.

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33

Punjala, Shishir Shanker, Niki Pissinou, and Kia Makki. "A Multiple Resonant Frequencies Circular Reconfigurable Antenna Investigated with Wireless Powering in a Concrete Block." International Journal of Antennas and Propagation 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/413642.

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A novel broadband reconfigurable antenna design that can cover different frequency bands is presented. This antenna has multiple resonant frequencies. The reflection coefficient graphs for this antenna are presented in this paper. The new proposed design was investigated along with RF MEMS switches and the results are also presented. Investigations were carried out to check the efficiency of the antenna in the wireless powering domain. The antenna was placed in a concrete block and its result comparison to that of a dipole antenna is also presented in this paper.

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34

Chawla, Paras, and Rajesh Khanna. "A new spiral frequency reconfigurable antenna with RF-MEMS switches for mobile RF front end." International Journal of Applied Electromagnetics and Mechanics 47, no. 2 (February 1, 2015): 323–35. http://dx.doi.org/10.3233/jae-140018.

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35

Jung, C., M. Lee, G. P. Li, and F. DeFlaviis. "Reconfigurable Scan-Beam Single-Arm Spiral Antenna Integrated With RF-MEMS Switches." IEEE Transactions on Antennas and Propagation 54, no. 2 (February 2006): 455–63. http://dx.doi.org/10.1109/tap.2005.863407.

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36

Nalini, K., and V. R. Anitha. "Design and Simulation of RF-MEMS Integrated Reconfigurable Antenna for Wideband Applications." i-manager's Journal on Electronics Engineering 5, no. 2 (February 15, 2015): 15–20. http://dx.doi.org/10.26634/jele.5.2.3334.

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37

Lago, Herwansyah, Mohd Faizal Jamlos, Ping Jack Soh, and Guy A. E. Vandenbosch. "AMC-INTEGRATED RECONFIGURABLE BEAMFORMING FOLDED DIPOLE ANTENNA WITH PARASITIC AND RF MEMS." Progress In Electromagnetics Research C 69 (2016): 159–67. http://dx.doi.org/10.2528/pierc16082403.

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38

Myoung, Seong-Sik, Jong-Gwan Yook, Soon Young Eom, Soon-Ik Jeon, Terence Wu, Ronglin Li, Kyutae Lim, Manos M. Tentzeris, and Joy Laskar. "A RECONFIGURABLE ACTIVE ARRAY ANTENNA SYSTEM WITH THE FREQUENCY RECONFIGURABLE AMPLIFIERS BASED ON RF MEMS SWITCHES." Progress In Electromagnetics Research C 13 (2010): 107–19. http://dx.doi.org/10.2528/pierc10030602.

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39

Shen, S. C., D. Becher, Z. Fan, D. Caruth, and Milton Feng. "Development of Broadband Low Actuation Voltage RF MEM Switches." Active and Passive Electronic Components 25, no. 1 (2002): 97–111. http://dx.doi.org/10.1080/08827510211282.

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Low insertion loss, high isolation RF MEM switches have been thought of as one of the most attractive devices for space-based reconfigurable antenna and integrated circuit applications. Many RF MEMS switch topologies have been reported and they all show superior RF characteristics compared to semiconductor-based counterparts. At the University of Illinois, we developed state-of-the-art broadband low-voltage RF MEM switches using cantilever and hinged topologies. We demonstrated promisingsub-10volts operation for both switch topologies.The switches have an insertion loss of less than 0:1 dB, and an isolation of better than 25 dB over the frequency range from 0.25 to 40 GHz. The RF Model of the MEM switch was also established. The low voltage RF MEM switches will provide a solution for low voltage and highly linear switching methods for the next generation of broadband RF, microwave, and millimeter-wave circuits.

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40

N, Siddaiah. "Performance Analysis Of Low Pullin Voltage RF MEMS Switch For Reconfigurable Antenna Applications." International Journal of Emerging Trends in Engineering Research 7, no. 11 (November 15, 2019): 670–76. http://dx.doi.org/10.30534/ijeter/2019/427112019.

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41

Balarajuswamy, T. A., and R. Nakkeeran. "RF MEMS for Reconfigurable Antenna Using Gravitational Search Optimization and Artificial Neural Network." Journal of Circuits, Systems and Computers 27, no. 08 (April 12, 2018): 1850132. http://dx.doi.org/10.1142/s0218126618501323.

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The projected method explains about the problems occurred in the combination of the MEMS switches and the complete scheme plan is resolved through choosing the finest devise limits for the plan. The devise limits, namely, length of beam, width of beam, torsion arm length, switch thickness, holes and gap were measured. At this point, the finest value of the devise limit is forecast by the aid of artificial neural network (ANN). Furthermore, the method contains the optimization method of Gravitational Search Algorithm (GSA) to optimize the input signal and so dropping the Mean Square Error (MSE). The complete scheme is executed in the operational platform of MATLAB and the outcomes were examined.

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42

Anagnostou, D. E., G. Zheng, M. T. Chryssomallis, J. C. Lyke, G. E. Ponchak, J. Papapolymerou, and C. G. Christodoulou. "Design, Fabrication, and Measurements of an RF-MEMS-Based Self-Similar Reconfigurable Antenna." IEEE Transactions on Antennas and Propagation 54, no. 2 (February 2006): 422–32. http://dx.doi.org/10.1109/tap.2005.863399.

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43

Sharma, Ashish Kumar, and Navneet Gupta. "MATERIAL SELECTION OF RF-MEMS SWITCH USED FOR RECONFIGURABLE ANTENNA USING ASHBY'S METHODOLOGY." Progress In Electromagnetics Research Letters 31 (2012): 147–57. http://dx.doi.org/10.2528/pierl12021101.

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44

Li, Ming, Haiping Wei, Jiahao Zhao, and Qingchang Tao. "Trifrequency Reconfigurable Linear Irregular Array with Beam Deflection Capability in X/Ku/Ka-Bands." International Journal of Antennas and Propagation 2020 (June 24, 2020): 1–11. http://dx.doi.org/10.1155/2020/9074135.

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This paper proposes a trifrequency reconfigurable antenna (FRA), which can work in the X-band, Ku-band, and Ka-band, by controlling only two RF MEMS switches. The antenna element has a frequency ratio beyond 3 : 1 and provides a good candidate for the frequency reconfigurable antenna array, since the size of the antenna is reduced by loading multiple metal shorting holes between the antenna radiating surface and the ground plate, and the overall size is only 0.14λX × 0.35λX (λX is the free-space wavelength at 8.6 GHz). Based on the proposed FRA element, a 1 × 16 linear irregular frequency reconfigurable antenna array (FRAA) with beam deflection ability is designed, which effectively addresses the element spacing problem in the optimization of the array. In addition, the close-coupling in X-band and the grating lobe caused by the long distance of array element spacing in Ka-band are comprehensively considered. With uniform amplitude feeding network, the sidelobe level is below −15 dB under beam deflection. Moreover, both FRA elements and FRAA prototypes have been fabricated and measured to verify their superiority. Good agreements are obtained between simulated and measured results, which indicates that the antenna has potential application in the future multifrequency wireless communication and intelligent radar anti-interference fields.

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Guoan Wang, T. Polley, A. Hunt, and J. Papapolymerou. "A high performance tunable RF MEMS switch using barium strontium titanate (BST) dielectrics for reconfigurable antennas and phased arrays." IEEE Antennas and Wireless Propagation Letters 4 (2005): 217–20. http://dx.doi.org/10.1109/lawp.2005.851065.

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Hyeon, Ik-Jae. "Package-Platformed Linear/Circular Polarization Reconfigurable Antenna Using an Integrated Silicon RF MEMS Switch." ETRI Journal 33, no. 5 (October 4, 2011): 802–5. http://dx.doi.org/10.4218/etrij.11.0210.0422.

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47

Hassan, Muhammad Mateen, Zeeshan Zahid, Adnan Ahmed Khan, Imran Rashid, Abdul Rauf, Moazam Maqsood, and Farooq Ahmed Bhatti. "Two element MIMO antenna with frequency reconfigurable characteristics utilizing RF MEMS for 5G applications." Journal of Electromagnetic Waves and Applications 34, no. 9 (May 18, 2020): 1210–24. http://dx.doi.org/10.1080/09205071.2020.1765883.

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Jung, Tony J., Ik-Jae Hyeon, Chang-Wook Baek, and Sungjoon Lim. "Circular/Linear Polarization Reconfigurable Antenna on Simplified RF-MEMS Packaging Platform in K-Band." IEEE Transactions on Antennas and Propagation 60, no. 11 (November 2012): 5039–45. http://dx.doi.org/10.1109/tap.2012.2207662.

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Bhatia, Vinay, Sukhdeep Kaur, Kuldeep Sharma, Punam Rattan, Vishal Jagota, and Mohammed Abdella Kemal. "Design and Simulation of Capacitive MEMS Switch for Ka Band Application." Wireless Communications and Mobile Computing 2021 (July 12, 2021): 1–8. http://dx.doi.org/10.1155/2021/2021513.

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In this paper, RF MEMS switch with capacitive contact is designed and analyzed for Ka band application. A fixed-fixed beam/meander configuration has been used to design the switch for frequency band 10 GHz to 40 GHz. Electromagnetic and electromechanical analysis of three-dimensional (3D) structure/design has been analyzed in multiple finite element method (FEM) based full-wave simulator (Coventorware and high-frequency structure simulator). A comparative study has also been carried out in this work. The high resistivity silicon substrate ( tan δ = 0.010 , ρ > 8 k Ω − cm , ε r = 11.8 ) with a thickness of 675 ± 25 μ m has been taken for switch realization. The designed structure shows an actuation voltage of around 9.2 V. Impedance matching for the switch structure is well below 20 dB, loss in upstate, i.e., insertion loss >0.5 dB, and isolation of >25 dB throughout the frequency band is observed for the aforesaid structure. Furthermore, to increase the RF parameters, AIN dielectric material has been used instead of SiO2 resulting in capacitance in downstate that increases hence improved the isolation. The proposed switch can be utilized in various potential applications such as any switching/tunable networks phased-array radar, reconfigurable antenna, RF phase shifter, mixer, biomedical, filter, and any transmitter/receiver (T/R) modules.

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Deng, Zhongliang, Xubing Guo, Hao Wei, Jun Gan, and Yucheng Wang. "Design, Analysis, and Verification of Ka-Band Pattern Reconfigurable Patch Antenna Using RF MEMS Switches." Micromachines 7, no. 8 (August 17, 2016): 144. http://dx.doi.org/10.3390/mi7080144.

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