نتایج جستجو برای: siw cavity

تعداد نتایج: 79367  

Journal: :Applied Computational Electromagnetics Society Journal 2022

This paper presents a dual-band slot antenna using substrate integrated waveguide (SIW) technology at 26 and 28 GHz. High loss is one of the main challenges faced by 5G base station network due to severe path high frequency. Hence, gain antennas are required for applications overcome issue. this work designs SIW based on excite dual-bands with capability. The designed two slots shaped resonate ...

Journal: :IOP conference series 2022

A frequency reconfigurable antenna based on substrate integrated waveguide (SIW) technology is proposed in this paper for K/Ku band applications. In most of the previous structures terminal SIW was used but here structure, as well blind vias being implanted to achieve maximum reconfigurability and better efficiency miniature antenna. The parameters are analysed thoroughly without diode with dio...

In this research work, a multibeam antenna which is a combination of a beamformer network (BFN) and a linear array antenna, has been designed. A Rotman lens has been chosen as beamformer network and Vivaldi antennas have been selected for constructing array antenna. The Substrate Integrated Waveguide (SIW) was used for implementing Rotman lens. After explanation the structure of Substrate integ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده برق و کامپیوتر 1393

در بسیاری از کاربردهای مخابراتی و راداری نیاز به آرایه آنتنی داریم که چند باریکه به صورت همزمان تولید کند. استفاده از آنتن آرایه فازی و آنتن بازتابنده به همراه چند تغذیه، دو روش مرسوم برای تولید آنتن چند باریکه ای هستند که البته پیچیده و پرهزینه می باشند. در روش دیگر دامنه و فاز در هر یک از عناصرِ آرایه توسط شبکه ای که شبکه شکل دهنده باریکه نامیده می شود و چند ورودی و چند خروجی دارد، کنترل می شو...

Journal: :IEEE Antennas and Wireless Propagation Letters 2021

This letter presents a substrate-integrated waveguide (SIW) antenna for CubeSat applications. The compact structure utilizes middle-point feeding and shorting walls to achieve broadside radiation in the far-field at two distinct frequencies. In particular, this dual-frequency behavior is related transition from dominant leaky wave (LW) on aperture lower frequencies more hybrid (at higher freque...

Journal: :IEEE Transactions on Antennas and Propagation 2022

In this article, a concept of phased antenna array based on substrate integrated waveguide (SIW) technology for 5G base stations is proposed. The has cosecant radiation pattern in the vertical plane uniform illumination sector area. itself consists 16 SIW traveling wave subarrays 12 slot-coupled microstrip patch antennas associated with pair reflection-canceling vias and phasing elements to get...

Journal: :IEEE journal of microwaves 2023

Multiband bandpass filters (BPFs) and multiplexers are essential front-end modules in the development of multifunction, multistandard, multiband wireless communication, sensing, positioning systems that required current future intelligent electronics applications. In this paper, numerous implementation schemes topologies BPFs multiplexers, which have been proposed, studied, developed so far, ho...

Journal: :IEEE Access 2023

A substrate-integrated waveguide (SIW) antenna is an implementation of a in microstrip antenna. The antenna, as low-profile suffers from narrow impedance bandwidth. This paper proposes novel bandwidth enhancement method for solving Bandwidth was achieved by using quad-resonant frequencies. frequencies are resulted the hybrid half-mode (HMSIW) cavities between inner and outer cavities. HMSIW cav...

Journal: :Systems microbiology and biomanufacturing 2021

Unconventional alternatives such as aerobic and anaerobic effluent from starch industry contain essential nutrients for Btk active ingredient synthesis. Effluent is rich in carbon nitrogen can replace expensive feedstock used during the fermentation process. The main objective of this study was to achieve a biopesticide formulation wastewater (SIW) with high entomotoxicity (UI/ml) larvae compar...

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