Antenna design with control of radiation pattern and frequency bandwidth

2004 ◽  
Author(s):  
I. Pele ◽  
Y. Mahe ◽  
A. Chousseaud ◽  
S. Toutain ◽  
P.Y. Garel
Keyword(s):  
Radiation Pattern ◽  
Antenna Design ◽  
Frequency Bandwidth

scholarly journals Wideband Dual-Polarized VHF Antenna for Space Observation Applications

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4351
Author(s):  
Alexandru Tatomirescu ◽  
Alina Badescu
Keyword(s):  
Radiation Pattern ◽  
Group Delay ◽  
High Gain ◽  
Antenna Element ◽  
Frequency Bandwidth ◽  
Radio Emissions ◽  
Relative Bandwidth ◽  
Pattern Stability ◽  
Dual Polarized ◽  
Delay Variation

This work presents the design for an antenna element that can be used in radio arrays for the monitoring and detecting of radio emissions from cosmic particles’ interactions in the atmosphere. For these applications, the pattern stability over frequency is the primary design goal. The proposed antenna has a high gain over a relative bandwidth of 88%, a beamwidth of 2.13 steradians, a small group delay variation and a very stable radiation pattern across the frequency bandwidth of 110 to 190 MHz. It is dual polarized and has a simple mechanical structure which is easy and inexpensive to manufacture. The measurements show that the ground has insignificant impact on the overall radiation pattern.

Miniature and near-3D omnidirectional radiation pattern RFID tag antenna design

2009 ◽  
Vol 45 (18) ◽  
pp. 923 ◽  
Author(s):  
S.-L. Chen ◽  
K.-H. Lin ◽  
R. Mittra
Keyword(s):  
Radiation Pattern ◽  
Antenna Design ◽  
Rfid Tag

An Improved Design of PIFA Antenna on Mobile Phone

2013 ◽  
Vol 718-720 ◽  
pp. 1634-1638 ◽  
Author(s):  
Li Yun Zhang ◽  
Zheng Ron Xiao ◽  
Jun Liao
Keyword(s):  
Mobile Phone ◽  
High Frequency ◽  
Return Loss ◽  
Antenna Design ◽  
Frequency Bandwidth ◽  
High Frequency Band ◽  
Simulation Results ◽  
Improved Design ◽  
High Band ◽  
Pifa Antenna

Firstly, the development and principle of PIFA antenna in mobile phone are introduced, and the typical PIFA antenna design is analyzed. The PIFA antenna simulation is based on HFSS software. It is found that the high frequency bandwidth of this kind of antenna is very narrow. Then related parameters are optimized, by increasing the parasitic branch in high frequency band. Simulation results show that the return loss of PIFA antenna in high band is improved and the antenna can be expanded in high band, and matched in low band simultaneously.

scholarly journals Rancang Bangun Antena Mikrostrip Bowtie Pada Frekuensi 5,2 Ghz

2018 ◽  
Vol 10 (2) ◽  
pp. 15-21
Author(s):  
Aprinal Adila Asril ◽  
Lifwarda Lifwarda ◽  
Yul Antonisfia
Keyword(s):  
Dielectric Constant ◽  
Resonant Frequency ◽  
Resonance Frequency ◽  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Microstrip Antennas ◽  
Antenna Design ◽  
Narrow Bandwidth ◽  
Simple Materials

Microstrip antennas are very concerned shapes and sizes. Can be viewed in terms of simple materials, shapes, sizes and dimensions smaller antennae, the price of production is cheaper and able to provide a reasonably good performance, in addition to having many advantages, the microstrip antenna also has its drawbacks one of which is a narrow bandwidth. In this research will be designed a microstrip antenna bowtie which works at a frequency of 5.2 GHz which has a size of 68mm x 33mm groundplane. For the length and width of 33mm x 13mm patch. This antenna is designed on a printed cicuit board (PCB) FR4 epoxy with a dielectric constant of 4.7 and has a thickness of 1,6mm. This bowtie microstrip antenna design using IE3D software. This antenna has been simulated using IE3D software showed its resonance frequency is 5.270 GHz with a return loss -23 595 dB bandwidth of 230 MHz, VSWR 1,142, unidirectional radiation pattern and impedance 43,919Ω. The results of which have been successfully fabricated antenna with a resonant frequency of 5.21 GHz with a return loss -16.813 dB bandwidth of 79 MHz, VSWR 1.368, unidirectional radiation pattern, impedance 43,546Ω and HPBW 105 °.

scholarly journals Broadband Dual-Polarized Multidipole Antenna for Base Station Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Yuxuan Huang ◽  
Zeqi Zhu ◽  
Shuting Cai ◽  
Xiaoming Xiong ◽  
Yuan Liu
Keyword(s):  
Radiation Pattern ◽  
Base Station ◽  
Impedance Bandwidth ◽  
Frequency Bandwidth ◽  
Frequency Range ◽  
High Isolation ◽  
Small Rectangle ◽  
Additional Resonance ◽  
Dual Polarized ◽  
Better Than

A wideband dual-polarized multidipole antenna for base station applications is proposed. It consists of a pair of large square-shaped loop dipoles and a pair of small rectangle loop dipoles as radiation elements. A pair of small rectangle loop dipoles is fed by T-shaped feed structure which is in the large square-shaped loop dipoles radiating arm so that the antenna generates an additional resonance and obtains a wider bandwidth. The proposed antenna was fabricated and measured, and the results show that the antenna achieves a wide impedance bandwidth of 63.7 % with VSWR<1.5 covering the frequency range from 1.55 to 3 GHz. A high isolation is better than 29 dB within the operating frequency bandwidth. Moreover, an average gain 8 dBi and a stable radiation pattern with 3 dB beamwidth of 69° ± 4° at H-plane are obtained.

scholarly journals Desain Antena Mikrostrip Rectangular Patch Array 1x2 dengan U-Slot Frekuensi 28 GHz

2019 ◽  
Vol 7 (1) ◽  
pp. 43
Author(s):  
FAJAR WAHYU ARDIANTO ◽  
SETYAWAN RENALDY ◽  
FARHAN FATHIR LANANG ◽  
TRASMA YUNITA
Keyword(s):  
Radiation Pattern ◽  
Return Loss ◽  
Network Capacity ◽  
Antenna Design ◽  
User Needs ◽  
Antenna Gain ◽  
Rectangular Patch ◽  
Narrow Bandwidth ◽  
Small Gain

ABSTRAKKebutuhan pengguna yang semakin meningkat harus diimbangi dengan peningkatan kecepatan data dan kapasitas suatu jaringan, sehingga diperlukan bandwidth yang lebar. 5G merupakan salah satu teknologi yang akan diresmikan tahun 2020 yang menjadi solusi terhadap peningkatan kecepatan data dan kapasitas layanan. Salah satu kandidat yang menjadi frekuensi kerja 5G yaitu 28 GHz. Antena mikrostrip merupakan salah satu jenis antena yang dapat digunakan untuk teknologi 5G. Namun, antena mikrostrip memiliki beberapa kekurangan, diantaranya bandwidth dan gain yang kecil. Untuk itu, dibutuhkan teknik yang dapat meningkatkan bandwidth dan gain antena. Pada penelitian ini dirancang antena mikrostrip bentuk rectangular patch yang ditambahkan slot berbentuk U dengan tujuan meningkatkan bandwidth dan disusun secara array 1×2 untuk meningkatkan gain antena. Hasil dari simulasi didapatkan antena mampu bekerja pada rentang frekuensi 27,5 GHz – 29,12 GHz pada batas return loss kurang dari -15 dB dengan bandwidth sebesar 1,62 GHz. Nilai gain yang dihasilkan sebesar 7,52 dB. Pola radiasi yang dihasilkan, yaitu unidireksional dan berpolarisasi secara linear.Kata kunci: 5G, 28 GHz, mikrostrip, rectangular patch, array, U-Slot ABSTRACTData rate and network capacity improvements offset the increase of user needs, hence it requires a wider bandwidth. The most current high-end technology, which can solve the problem is 5G. One of the frequency that becomes the candidate of 5G is 28 GHz. For 5G, it could apply one of the antenna types, micro strip antenna. However, micro strip antenna has a shortage of narrow bandwidth and small gain. Therefore, it requires a technique to increase the bandwidth and gain of the antenna. In this study, the form of micro strip of antenna design is a rectangular patch with the addition of U-Slot and arranged 1x2 to increase the bandwidth and antenna gain. The results of the simulation show that the antenna is working well at the range frequency of 27.5 GHz - 29.12 GHz, with a return loss limit of -15 dB with bandwidth of 1.62 GHz, the resulting gain value is 7.52 dB, the resulting radiation pattern is unidirectional and linearly polarized.Keywords: 5G, 28 GHz, microstrip, rectangular patch, array, U-Slot

scholarly journals Miniaturized implantable power transmission system for biomedical wireless applications

2020 ◽  
Vol 7 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Shuoliang Ding ◽  
Stavros Koulouridis ◽  
Lionel Pichon
Keyword(s):  
Reflection Coefficient ◽  
Radiation Pattern ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Power Transmission ◽  
Antenna Design ◽  
Wireless Power ◽  
Specific Absorption ◽  
Wireless Applications ◽  
Power Needs

AbstractIn this paper, a complete wireless power transmission scenario is presented, including an external transmission antenna, an in-body embedded antenna, a rectifying circuit, and a powered sensor. This system operates at the Industrial, Scientific, and Medical bands (902.8–928 MHz). For the antenna design, important parameters including reflection coefficient, radiation pattern, and specific absorption rate are presented. As for the rectifying circuit, a precise model is created utilizing off-the-shelf components. Several circuit models and components are examined in order to obtain optimum results. Finally, this work is evaluated against various sensors' power needs found in literature.

Inhomogeneous lens antenna design with fan-beam radiation pattern

2016 ◽  
Vol 14 (12) ◽  
pp. 121601-121605 ◽  
Author(s):  
Mohammad Mahdi Taskhiri Mohammad Mahdi Taskhiri ◽  
Mohammad Khalaj-Amirhosseini Mohammad Khalaj-Amirhosseini
Keyword(s):  
Radiation Pattern ◽  
Antenna Design ◽  
Beam Radiation ◽  
Lens Antenna
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