scholarly journals Recent Progress in the Design of 4G/5G Reconfigurable Filters

Electronics ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 114 ◽  
Author(s):  
Yasir Al-Yasir ◽  
Naser Ojaroudi Parchin ◽  
Raed Abd-Alhameed ◽  
Ahmed Abdulkhaleq ◽  
James Noras
Keyword(s):  
Cost Effective ◽  
Microwave Filters ◽  
Microwave Filter ◽  
Light Weight ◽  
Frequency Bandwidth ◽  
Electronic Components ◽  
Millimetre Wave ◽  
Control Frequency ◽  
Microstrip Filters ◽  
Reconfigurable Filters

Currently, several microwave filter designs contend for use in wireless communications. Among various microstrip filter designs, the reconfigurable planar filter presents more advantages and better prospects for communication applications, being compact in size, light-weight and cost-effective. Tuneable microwave filters can reduce the number of switches between electronic components. This paper presents a review of recent reconfigurable microwave filter designs, specifically on current advances in tuneable filters that involve high-quality factor resonator filters to control frequency, bandwidth and selectivity. The most important materials required for this field are also highlighted and surveyed. In addition, the main references for several types of tuneable microstrip filters are reported, especially related to new design technologies. Topics surveyed include microwave and millimetre wave designs for 4G and 5G applications, which use varactors and MEMSs technologies.

scholarly journals Design Methods for Reconfigurable Filters: A Review

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Sunil Raosaheb Gagare . ◽  
Dolly Reney .
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Filter Design ◽  
Cost Effective ◽  
Design Methods ◽  
Microwave Filters ◽  
Wireless Communication Systems ◽  
Compact Size ◽  
Electrical Components ◽  
Reconfigurable Filters

The new design methods of microwave filter has proved its significance for use in wireless communication systems. Modern wireless communication systems require microwave filters to have stringent specifications such as compact size, robust, conformal, light weight and more importantly cost effective while maintaining its electrical characteristics. Micro-strip filter design and reconfigurable filters present a better prospectus in this regards as it meets the specifications of modern wireless communication applications. Reconfigurable filters can provide control over parameters such as frequency, bandwidth and selectivity while reducing the need of number of switches sandwiched between electrical components. Different methods have provided a new dimension for designing microwave filters .In this article, we present a review on design methods for reconfigurable band-pass filters for next generation wireless technologies such as 4G, 5G and IOT.

Review Compact Microwave Filter for Harmonic Rejection

2015 ◽  
Vol 793 ◽  
pp. 286-291
Author(s):  
Liew Hui Fang ◽  
Syed Idris Syed Hassan ◽  
Fareq Malek ◽  
Yufridin Wahab ◽  
Nurhakimah Mohd Mukhtar
Keyword(s):  
High Performance ◽  
Low Frequency ◽  
Microwave Filters ◽  
Microwave Filter ◽  
Harmonic Rejection ◽  
Microstrip Filters ◽  
Low Pass ◽  
Lumped Elements ◽  
Low Pass Filters ◽  
Distributed Elements

An investigation of the several different techniques and method have been suggested in the design of compact microwave filters for the realization of high performance output micromachined microstrip low pass filters and highest attenuation loss is presented in this paper. It is shown that the basis for much fundamental microwave filter theory lies in the real of lumped-element filters, which lumped elements suffers for not suitable use in high frequency, because wavelength will decrease to short and the only distributed elements can practically well and the lumped elements circuit and work efficiently at low frequency or vice versa wavelength of distributed elements become too larger. In this paper, a review of numerous methods of design compact microstrip filters that have been offered over the last years is proposed, including a discussion of topologies and the structures used to make compactness size of microwave filters.

scholarly journals Frequency-diverse multimode millimetre-wave constant-ϵr lens-loaded cavity

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
M. A. B. Abbasi ◽  
V. F. Fusco ◽  
O. Yurduseven ◽  
T. Fromenteze
Keyword(s):  
Signal To Noise Ratio ◽  
Cost Effective ◽  
Doa Estimation ◽  
Frequency Diversity ◽  
Millimetre Wave ◽  
Single Lens ◽  
Dielectric Lens ◽  
Diversity Principle ◽  
First Time ◽  
Multi Mode

AbstractThis paper presents a physical frequency-diverse multimode lens-loaded cavity, designed and used for the purpose of the direction of arrival (DoA) estimation in millimetre-wave frequency bands for 5G and beyond. The multi-mode mechanism is realized using an electrically-large cavity, generating spatio-temporally incoherent radiation masks leveraging the frequency-diversity principle. It has been shown for the first time that by placing a spherical constant dielectric lens (constant-ϵr) in front of the radiating aperture of the cavity, the spatial incoherence of the radiation modes can be enhanced. The lens-loaded cavity requires only a single lens and output port, making the hardware development much simpler and cost-effective compared to conventional DoA estimators where multiple antennas and receivers are classically required. Using the lens-loaded architecture, an increase of up to 6 dB is achieved in the peak gain of the synthesized quasi-random sampling bases from the frequency-diverse cavity. Despite the fact that the practical frequency-diverse cavity uses a limited subset of quasi-orthogonal modes below the upper bound limit of the number of theoretical modes, it is shown that the proposed lens-loaded cavity is capable of accurate DoA estimation. This is achieved thanks to the sufficient orthogonality of the leveraged modes and to the presence of the spherical constant-ϵr lens which increases the signal-to-noise ratio (SNR) of the received signal. Experimental results are shown to verify the proposed approach.

Design of segmented thermoelectric generator based on cost-effective and light-weight thermoelectric alloys

2014 ◽  
Vol 185 ◽  
pp. 45-52 ◽  
Author(s):  
Hee Seok Kim ◽  
Keiko Kikuchi ◽  
Takashi Itoh ◽  
Tsutomu Iida ◽  
Minoru Taya
Keyword(s):  
Thermoelectric Generator ◽  
Cost Effective ◽  
Light Weight

scholarly journals Planar asymmetric dual diode for millimetre wave detection and power measurement

2018 ◽  
Vol 57 (4) ◽  
Author(s):  
Algirdas Sužiedėlis ◽  
Steponas Ašmontas ◽  
Jonas Gradauskas ◽  
Aldis Šilėnas ◽  
Aurimas Čerškus ◽  
...  
Keyword(s):  
Gaas Substrate ◽  
Cost Effective ◽  
Power Measurement ◽  
Millimetre Wave ◽  
Hot Carrier ◽  
Wave Detection ◽  
In Series ◽  
Planar Diodes ◽  
Microwave Diode ◽  
The Cost

The design of a simple cost-effective planar semiconductor microwave diode is proposed. The operation is based on hot carrier phenomena and rectification of microwave currents flowing through the structure composed of two diodes connected in series and having different active region areas. A simplified technological process and the use of simplex semiconductor material result in the reduction of both the time and the cost of fabrication of a dual microwave diode. By choosing an appropriate GaAs substrate, two types of microwave diodes were produced simultaneously: one almost demonstrating the ohmic behaviour and the other two having the asymmetrical Schottky-like I–V characteristic. The Schottky-like planar diodes exhibited a higher responsivity to millimetre range microwave radiation and a faster response to pulsed (down to a nanosecond scale) excitation, but the ohmic ones demonstrated better noise properties.

Microwave Filter Design Optimized for Ceramic Multilayer Technique

2016 ◽  
Vol 2016 (CICMT) ◽  
pp. 000199-000202
Author(s):  
Peter Uhlig ◽  
Juergen Kassner ◽  
Carsten Guenner ◽  
Elke Noack
Keyword(s):  
Filter Design ◽  
Three Dimensional ◽  
Microwave Filters ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Millimetre Wave ◽  
Filter Performance ◽  
Filter Synthesis ◽  
Microwave Engineering ◽  
Manufacturing Tolerances

Abstract Low Temperature Co-fired Ceramic (LTCC) is a proven packaging technology for microwave and millimetre-wave applications. Advanced low-loss material systems and improved manufacturing technology facilitate economic and highly reliable packaging solutions for automotive, telecom, medical and security applications. One of the virtues of LTCC is the option to integrate all kinds of components into the multilayer. Embedded passives include resistors, capacitors and inductors. Moving matching networks and filters into inner layers is further increasing density of integration. Microwave filters in LTCC can be used as an integral part of a larger package but also as single components mounted as drop-in or SMT. Ceramic multilayer technology allows for new filter concepts with three-dimensional routing and integration. Tolerances in material properties and manufacturing are challenges to be met with the design and production of microwave filters. Tape thickness, permittivity, shrinkage, registration of conductor pattern to via position, conductor width and thickness are some of the parameters that influence filter performance and reproducibility. This paper shall compare two different concepts for a 20 GHz band pass filter regarding their sensitivity to manufacturing tolerances. An optimized filter design shows improved robustness against manufacturing tolerances. This concept particularly reduces the sensitivity to registration tolerances of conductors and ground vias. A filter synthesis and simulation which takes into account systematic and random manufacturing effects takes out some of the guesswork of filter design and fabrication. It will also reduce the trial and error loops traditionally involved with this part of microwave engineering.

Experimental Study on Electromagnetic Forming of Copper Sheets

2013 ◽  
Author(s):  
Shanmuga Sundaram Karibeeran ◽  
Rajiv Selvam
Keyword(s):  
Sheet Metal ◽  
Metal Forming ◽  
Weight Ratio ◽  
Cost Effective ◽  
Electromagnetic Forming ◽  
Light Weight ◽  
Thin Sheets ◽  
Spring Back ◽  
Aerospace Applications ◽  
Copper Aluminum

The sheet metal forming of copper, aluminum alloys using conventional stamping processes posses various problems, because of the lower formability limits, spring back and the tendency to wrinkle compared to steel. The principle of electromagnetism using attractive force is adopted to modify the conventional stamping process, to form thin sheets of 0.05 mm thickness. Further, this process can be used to form many sheet metal components with less expensive tooling and lesser number of operations. This process ultimately leads to light weight, cost effective and better strength-to-weight ratio components required for aerospace applications. In this study, a maximum of 30.77 % reduction in diameter was observed at 2.75A using electromagnetic forming which leads to the absence of spring back.

scholarly journals Graphene from waste tire by recycling technique for cost-effective and light-weight automotive plastic part production

2020 ◽  
Author(s):  
Burcu Saner Okan ◽  
Yusuf Menceloğlu ◽  
Burcu Girginer Ozunlu ◽  
Yavuz Emre Yagci
Keyword(s):  
Cost Effective ◽  
Light Weight ◽  
Plastic Part ◽  
Waste Tire ◽  
Recycling Technique ◽  
Part Production

scholarly journals A cost-effective sensor system to train light weight juggling using an interactive virtual reality interface

2011 ◽  
Vol 1 ◽  
pp. 00094
Author(s):  
Marina Vela Nuñez ◽  
Carlo Avizzano ◽  
Denis Mottet ◽  
Massimo Bergamasco
Keyword(s):  
Virtual Reality ◽  
Cost Effective ◽  
Sensor System ◽  
Light Weight
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