scholarly journals Reconfigurable Antenna using Micromechanical Actuation Switches for K and Ku-Band Applications

2019 ◽  
Vol 9 (2) ◽  
pp. 201-205
Keyword(s):  
Insertion Loss ◽  
Patch Antenna ◽  
Rf Mems ◽  
Reconfigurable Antenna ◽  
Resonant Frequencies ◽  
Mems Switches ◽  
Actuation Mechanism ◽  
Rf Mems Switches ◽  
Mechanical Actuation ◽  
Ku Band

In this paper, we have proposed a reconfigurable antenna using micro mechanical actuation switches for K and Ku-band applications. Overall two identical cantilever micro mechanical switches (S1 & S2 ) are used to design reconfigurable patch antenna. The switches are working by electrostatic actuation mechanism. With the switches, overall the antenna is offering four resonant frequencies based on the switches ON/OFF condition. The Micro mechanical switches are offering an isolation loss of -18.5dB and an insertion loss of -1dB. The switch requires a DC actuation voltages of 6V. The Proposed reconfigurable antenna is resonating at four different frequencies based on the different switching conditions of RF MEMS switches. If S1 & S2 both are ON the antenna is resonating at 16.9GHZ, if S1 -ON & S2 -OFF the antenna is resonating at 47.3GHZ & 59.1GHZ, if S1 -OFF & S2 -ON the antenna is resonating at 28.4GHZ, if S1 -OFF & S2 -OFF the antenna is resonating at 27.9GHZ

Ka-Band Radiation Pattern Reconfigurable Microstrip Patch Antenna Employing MEMS Switches

2013 ◽  
Vol 411-414 ◽  
pp. 1674-1679 ◽  
Author(s):  
Zhong Liang Deng ◽  
Hua Gong ◽  
Sen Fan ◽  
Cai Hu Chen
Keyword(s):  
Resonant Frequency ◽  
Radiation Pattern ◽  
Insertion Loss ◽  
Patch Antenna ◽  
Rf Mems ◽  
Microstrip Patch Antenna ◽  
Mems Switches ◽  
Monolithically Integrated ◽  
Microstrip Patch ◽  
Rf Mems Switches

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.

scholarly journals A Multiple Resonant Frequencies Circular Reconfigurable Antenna Investigated with Wireless Powering in a Concrete Block

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Shishir Shanker Punjala ◽  
Niki Pissinou ◽  
Kia Makki
Keyword(s):  
Reflection Coefficient ◽  
Rf Mems ◽  
Concrete Block ◽  
Dipole Antenna ◽  
Antenna Design ◽  
Reconfigurable Antenna ◽  
Resonant Frequencies ◽  
Mems Switches ◽  
Wireless Powering ◽  
Rf Mems Switches

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.

scholarly journals Performance Comparison Of Shunt Rf Mems Switches

2021 ◽  
Vol 12 (5) ◽  
pp. 596-606
Author(s):  
S Girish Gandhi, I Govardhani, M Venkata Narayana, K Sarat Kumar
Keyword(s):  
Comparative Study ◽  
Insertion Loss ◽  
Return Loss ◽  
Rf Mems ◽  
Switching Time ◽  
Performance Comparison ◽  
Mems Switches ◽  
Mems Switch ◽  
Rf Mems Switches ◽  
And Performance

This is an attempt to compare three different shunt configured RF MEMS switches which offers a choice for applications in satellite and antennas. Advanced RF communication domain demands for design and modeling of RF MEMS switch which provides extremely reduced pull-in voltage, better isolation, low insertion loss, and with greater reliability. The proposed work manages with comparison of design modeling and performance of three different shunt configured RF MEMS switches. The proposed shunt configured RF MEMS switches are designed with different dimensions with different meandering techniques with perforations on beam structure helps in reducing the amount of voltage required for actuation of switch which is known as pull-in voltage. Comparative study of three different RF MEMS switches which involves in conducting electromechanical analysis are carried out using COMSOL multi physics tool and electromagnetic analysis are carried out using HFSS tool. Moreover the comparative study involves in comparing the values of pull-in voltage, switching time and capacitance, stress, insertion loss, return loss and isolation of three different RF MEMS switches. Proposed first switch model derives pull-in voltage of 16.9v with the switching time of 1.2µs, isolation of 47.70 dB at 5GHz and insertion loss of 0.0865 dB and return loss of 41.55 dB. Proposed second switch model derives pull-in voltage of 18.5v with the switching time of 2.5µs, isolation of 37.20 dB at 8GHz and insertion loss of 0.1177 dB and return loss of 38.60 dB. Proposed third switch model delivers pull-in voltage of 18.75v with the switching time of 2.56µs, isolation of 44.1552 dB at 8GHz and insertion loss of 0.0985 dB and return loss of 42.1004 dB.

scholarly journals Design, Analysis, and Verification of Ka-Band Pattern Reconfigurable Patch Antenna Using RF MEMS Switches

Micromachines ◽  
2016 ◽  
Vol 7 (8) ◽  
pp. 144 ◽  
Author(s):  
Zhongliang Deng ◽  
Xubing Guo ◽  
Hao Wei ◽  
Jun Gan ◽  
Yucheng Wang
Keyword(s):  
Patch Antenna ◽  
Rf Mems ◽  
Design Analysis ◽  
Band Pattern ◽  
Ka Band ◽  
Mems Switches ◽  
Rf Mems Switches

Application of genetic algorithm in M × N reconfigurable antenna array based on RF MEMS switches

2018 ◽  
Vol 32 (30) ◽  
pp. 1850365 ◽  
Author(s):  
Wenchao Tian ◽  
Daowei Wu ◽  
Qiang Chao ◽  
Zhiqiang Chen ◽  
Yongkun Wang
Keyword(s):  
Genetic Algorithm ◽  
Wireless Communication ◽  
Resonant Frequency ◽  
Antenna Array ◽  
Electromagnetic Compatibility ◽  
Rf Mems ◽  
Reconfigurable Antenna ◽  
Target Frequency ◽  
Mems Switches ◽  
Rf Mems Switches

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.

Ka-Band Wideband Pattern Reconfigurable Microstrip Patch Antenna with RF MEMS Switches

2010 ◽  
Vol 39 ◽  
pp. 146-150 ◽  
Author(s):  
Zhong Liang Deng ◽  
Man Zu Hong ◽  
Yi Dong Yao
Keyword(s):  
Patch Antenna ◽  
Rf Mems ◽  
Microstrip Patch Antenna ◽  
Bottom Edge ◽  
Antenna Structure ◽  
Ka Band ◽  
Mems Switches ◽  
Microstrip Patch ◽  
Ansoft Hfss ◽  
Rf Mems Switches

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.

A 1.2–1.6-GHz Substrate-Integrated-Waveguide RF MEMS Tunable Filter

2011 ◽  
Vol 59 (4) ◽  
pp. 866-876 ◽  
Author(s):  
Vikram Sekar ◽  
Marcelino Armendariz ◽  
Kamran Entesari
Keyword(s):  
Insertion Loss ◽  
Tuning Range ◽  
Microelectromechanical Systems ◽  
Rf Mems ◽  
Tunable Filter ◽  
Circuit Board ◽  
Substrate Integrated Waveguide ◽  
Mems Switches ◽  
Rf Mems Switches ◽  
Better Than

This paper presents a high-performance substrate-integrated-waveguide RF microelectromechanical systems (MEMS) tunable filter for 1.2-1.6-GHz frequency range. The proposed filter is developed using packaged RF MEMS switches and utilizes a two-layer structure that effectively isolates the cavity filter from the RF MEMS switch circuitry. The two-pole filter implemented on RT/Duroid 6010LM exhibits an insertion loss of 2.2-4.1 dB and a return loss better than 15 dB for all tuning states. The relative bandwidth of the filter is 3.7 ± 0.5% over the tuning range. The measuredQuof the filter is 93-132 over the tuning range, which is the best reportedQin filters using off-the-shelf RF MEMS switches on conventional printed circuit board substrates. In addition, an upper stopband rejection better than 28 dB is obtained up to 4.0 GHz by employing low-pass filters at the bandpass filter terminals at the cost of 0.7-1.0-dB increase in the insertion loss.

Sign in / Sign up

Export Citation Format

Share Document