Multiport RF MEMS switch for satellite payload applications

Subramanian, Muthiah; Joshitha, C.; Sreeja, B. S.; Nair, Pradeep R.

doi:10.1007/s00542-017-3675-3

Cited by 12 publications

(7 citation statements)

References 20 publications

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“…However, additional hardware circuitry is needed with multiple filters in antenna diversity schemes [10]. This is a drawback on existing combining techniques.…”

Section: Introductionmentioning

confidence: 99%

Development of a New Diversity Scheme in 5G Network at 28 GHz Millimter-wave Frequency for Digital Mobile System

Akande¹,

Agubor²,

Akinde³

et al. 2021

IJWMT

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This paper presents an improved hybrid Equal Gain Combiner-Maximal Ratio Combiner (EGC-MRC) diversity scheme in 5G millimeter wave (mm-wave) frequency. The term 5G mm-wave refers to the radio frequency spectrum between 24 and 100. The signal interference is a challenging task in 5G mm-wave frequency, and radio network suffer from co-channel and adjacent channel interference. 5G network deployment depends on large number of antennas, which resulted in signal interference. The conventional receiver's diversity techniques have high hardware complexity and are characterized by low performance. A new hybrid EGC-MRC diversity scheme was proposed as an improvement on the performance of existing MRC scheme. In achieving this, Probability Density Function (PDF) of the hybrid model was derived using the instantaneous Signal-to-Noise Ratio (SNR) obtained from the output of MRC and EGC diversity schemes. The performance of the developed model was evaluated using Outage Probability () and Processing time () at different SNR with number of paths. Simulation of the MRC, EGC and hybrid EGC-MRC models were carried out using MATLAB 2018a and the results compared. The output results showed that hybrid EGC-MRC performed better than EGC and MRC by having a lower and. This new model has the potential to mitigate network interference, multipath propagation, and hardware complexity in 5G mm-wave frequency. Therefore, the developed model can be deployed by network operators to solve signal interference in 5G network.

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“…However, additional hardware circuitry is needed with multiple filters in antenna diversity schemes [10]. This is a drawback on existing combining techniques.…”

Section: Introductionmentioning

confidence: 99%

Development of a New Diversity Scheme in 5G Network at 28 GHz Millimter-wave Frequency for Digital Mobile System

Akande¹,

Agubor²,

Akinde³

et al. 2021

IJWMT

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“…To provide redundancy in the communication system, highly energy efficient RF MEMS switches can be utilized in satellite payload applications to enhance the satellite capacity by providing resilience between the transmitter and receiver interconnection. 3 The MEMS switches are fabricated by Surface micro-machining processes, which utilizes a moving membrane that needs to be actuated to deflect over the signal-transmitting electrode. 4 Certain actuation mechanisms essentially electrostatic, electro-thermal, piezoelectric and magnetic have been used by these switches to lower their actuation voltage.…”

Section: Introductionmentioning

confidence: 99%

“…The main task of the RF MEMS switch is to provide signal routing without any power loss of signal. To provide redundancy in the communication system, highly energy efficient RF MEMS switches can be utilized in satellite payload applications to enhance the satellite capacity by providing resilience between the transmitter and receiver interconnection 3 . The MEMS switches are fabricated by Surface micro‐machining processes, which utilizes a moving membrane that needs to be actuated to deflect over the signal‐transmitting electrode 4 .…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of enhanced capacitive radio frequency MEMS switch based on Nb₂O₅ and HfO₂ dielectric for satellite payload applications

Narzary

Kumar

Bhattacharjee

et al. 2020

Trans Emerging Tel Tech

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An innovative capacitive radio frequency MEMS shunt switch with a unique shaped spring is designed and analyzed using COMSOL Multiphysics 5.4. The proposed switch using Hafnium oxide (HfO 2) and Niobium pentoxide (Nb 2 O 5) as the dielectric material between the transmission line and the deflecting gold membrane provides certain advantageous benefits with respect to performance parameters such as low actuation voltage, less spring constant, good isolation, low insertion loss, small size, and high capacitance ratio compared to other designs. A combination of three-turn meander and C-shaped spring having a spring constant of 0.186 N/m helps in achieving convenient actuation voltage. For 1, 1.5, and 2 μm air gaps, the actuation voltages required to bring the switch to ON mode are 1.77, 3.24, and 4.96 V respectively with Nb 2 O 5 as the dielectric layer and 1.8, 3.28, and 5.01 V respectively with HfO 2 as the dielectric layer respectively. At 2-μm air gap, the capacitance ratio is 329 for Nb 2 O 5 and 113 for HfO 2. RF analysis using ANSYS HFSS software shows the isolation of −19.41 dB at 11 GHz and insertion loss as low as −0.27 dB at 15 GHz. The proposed switch operating within the range of 1 to 30 GHz gives optimum results compared to other devices and is suitable for wireless communication and satellite payload applications.

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“…Low pull-in voltage and high isolation are the two significant research challenges in design and fabrication aspects of capacitive RF MEMS switches [3]. The serpentine structure meander helps to reduce the pull-in voltage of the switch [4]- [9]. To overcome the switch geometry and RF performance parameter challenges in the above-mentioned literature, the proposed device is selected, and it consists of semicircular arc shaped…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Analysis of Low Pull-In Voltage of Dimple Type Capacitive RF MEMS Shunt Switch for Ka-Band

et al. 2019

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This paper deals with the study of dimple type RF MEMS capacitive shunt switch using different meandering techniques for high isolation and low actuation voltage. The novelty of the proposed RF MEMS switch is it incorporates the meanders and dimples, which help to reduce the actuation voltage. The proposed switch structure is optimized, designed, and simulated with FEM analysis such as electromechanical and electromagnetic by using COMSOL and HFSS tools respectively. The best performance of the switch is observed by varying different parameters such as beam material, beam thickness, dielectric thickness, and airgap. The proposed switch with different meandering techniques attains the pull-in voltage in the range of 10.3-46 V, particularly the three uniform meander technique has low actuation voltage of 10.3 V. The RF performance of the device is particularly tuned in the range of 26.5-40 GHz frequency range and it is analyzed for all types of meanders. Among them, the non-uniform single meander has attained the best isolation of −54.13 dB at 40 GHz in the off state. The insertion and return losses of the device are −0.514 dB and −17.35 dB over 1-40 GHz frequency in on state.

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Multiport RF MEMS switch for satellite payload applications

Cited by 12 publications

References 20 publications

Development of a New Diversity Scheme in 5G Network at 28 GHz Millimter-wave Frequency for Digital Mobile System

Development of a New Diversity Scheme in 5G Network at 28 GHz Millimter-wave Frequency for Digital Mobile System

Design and analysis of enhanced capacitive radio frequency MEMS switch based on Nb₂O₅ and HfO₂ dielectric for satellite payload applications

Design and Performance Analysis of Low Pull-In Voltage of Dimple Type Capacitive RF MEMS Shunt Switch for Ka-Band

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Multiport RF MEMS switch for satellite payload applications

Cited by 12 publications

References 20 publications

Development of a New Diversity Scheme in 5G Network at 28 GHz Millimter-wave Frequency for Digital Mobile System

Development of a New Diversity Scheme in 5G Network at 28 GHz Millimter-wave Frequency for Digital Mobile System

Design and analysis of enhanced capacitive radio frequency MEMS switch based on Nb2O5 and HfO2 dielectric for satellite payload applications

Design and Performance Analysis of Low Pull-In Voltage of Dimple Type Capacitive RF MEMS Shunt Switch for Ka-Band

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Design and analysis of enhanced capacitive radio frequency MEMS switch based on Nb₂O₅ and HfO₂ dielectric for satellite payload applications