Qualification of Polyimide Based Coverlays for 900 MHz and 2.40 GHz Microstrip Antenna Applications

2012 ◽  
Vol 2012 (1) ◽  
pp. 001078-001080
Author(s):  
Deepukumar Nair ◽  
Glenn Oliver ◽  
Jim Parisi
Keyword(s):  
Resonant Frequency ◽  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Microstrip Antennas ◽  
Frequency Detuning ◽  
Antenna Gain ◽  
Test Vehicle ◽  
Minimal Impact ◽  
Frequency Bands

Organic coverlays are required to protect microstrip circuits in most applications. The presence of coverlay can potentially influence the performance of microstrip antennas. This paper describes the qualification of polyimide based coverlays for microstrip antennas both in 900 MHz and 2.50 GHz frequency bands. An Inverted F-shaped antenna fabricated on FR-4 dielectric is used as the test vehicle and two different coverlay materials are tested with respect to key parameters like resonant frequency, S11 bandwidth, antenna gain, frequency detuning, and radiation pattern. The data presented in this paper clearly indicates polyimide materials are well suited to cover microstrip antenna circuits with minimal impact on performance.

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 °.

The Design of a Microstrip Antenna with Radiation Pattern Controlled

2011 ◽  
Vol 143-144 ◽  
pp. 32-36
Author(s):  
Su Ling Wang ◽  
Ya Ting Gan ◽  
Guo Dong Wang
Keyword(s):  
Radiation Pattern ◽  
Radiation Intensity ◽  
Microstrip Antenna ◽  
Communication Systems ◽  
Microstrip Antennas ◽  
Theory Analysis ◽  
Antenna Theory

Microstrip Antennas have many applications in various communication systems. A new configuration of microstrip antenna is proposed in this paper. The microstrip antenna has two radiation ports. Through changing the radiation intensity of the two ports, the proposed structure breaks the balance of the radiation of the microstrip antenna therefore the radiation pattern would be changed corresponsively. Theory analysis is carried out based on microstrip antenna theory. Both analysis and simulation show that the new configuration can realize the radiation pattern controlled and the theory analysis agreed very well with simulation.

scholarly journals Analysis on different shape of textile antenna under bending condition for GPS application

2020 ◽  
Vol 9 (5) ◽  
pp. 1964-1970
Author(s):  
N. I. Zaidi ◽  
M. T. Ali ◽  
N. H. Abd Rahman ◽  
M. F. Yahya ◽  
M. S. Amin Nordin
Keyword(s):  
Resonant Frequency ◽  
Radiation Pattern ◽  
Antenna Gain ◽  
Bending Angle ◽  
Antenna Performance ◽  
Textile Antenna ◽  
Human Arm ◽  
Different Shapes ◽  
Antenna Characteristics

In this paper, three antennas with different designs, which are square, circle and edgy patch (flower) were simulated and fabricated. The experiment was carried out to study the effects of bending on these three different shapes of antennas. Two bending conditions which are H-plane and E-plane were used. The antenna was designed to resonate at 1.575 GHz for GPS application and to be incorporated with human arm. Thus, the bending angle was specified to be 135o which is about the size of a typical human arm. As the paper focusing on the bending effects only, the characteristic of the bending structure was set to be equal to the air, with Ɛr=1. The antenna characteristics such as gain, resonant frequency and radiation pattern were analyzed for these three shapes of antennas. As a result, the shape of the radiating patch has significant impact on the antenna performance under bending conditions. Based on the comparison of E-plane and H-plane data, the edgy shape was found to be more affected in term of gain performance as compared to other shapes. Bending on E-plane has shown severe degradation in antenna gain performance, whereby at H-plane, significant improvement in gain was observed

scholarly journals Resonant Frequency of Circular Sectorial Microstrip Antenna Printed On Double-Layered Anisotropic Substrates

2021 ◽  
Author(s):  
Souad FRIHA ◽  
Sami Bedra ◽  
Fouad CHEBBARA ◽  
Randa BEDRA ◽  
Siham BENKOUDA
Keyword(s):  
Resonant Frequency ◽  
Computer Aided Design ◽  
Microstrip Antenna ◽  
Microstrip Antennas ◽  
Resonant Frequencies ◽  
Design Engineers ◽  
Anisotropic Substrates ◽  
Aided Design ◽  
Composite Substrates ◽  
Good Agreement

Abstract In this work, modal characteristics have been rigorously studied which germinate an improved, accurate, and efficient computer-aided design (CAD) formulation to estimate the resonant frequency of sectorial circular microstrip antennas printed on anisotropic suspended and composite substrates. The obtained results demonstrated that the resonant frequencies of the sectorial circular microstrip patch on suspended and composite substrates can be adjusted to obtain the maximum operating frequency of the antenna. The computed results show a fairly good agreement with measured results. Such theoretical validation and results may prove to be more useful for design engineers and further investigation.

scholarly journals Rancang Bangun Antena Mikrostrip Path Rectangular pada Frekuensi 900 MHz untuk Aplikasi GSM

Respati ◽  
2019 ◽  
Vol 14 (2) ◽  
Author(s):  
Muhammad Imam Setiawan ◽  
Jon Endri ◽  
Sarjana Sarjana
Keyword(s):  
Mobile Device ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Linear Array ◽  
Microstrip Antennas ◽  
Substrate Material ◽  
Antenna Gain ◽  
Feed Line ◽  
Direct Measurements ◽  
Delivery Technology

INTISARIAntena adalah perangkat yang sangat penting dalam teknologi penyampaiian informasi. Oleh karena itu, pada zaman sekarang ini Beragam jenis antena telah banyak dikembangkan, salah satunya adalah antenna mikrostrip. antenna mikrostrip ini memiliki banyak keunggulan sehingga sering digunakan dalam berbagai perangkat seluler. Semakin bertambahnya pengguna perangkat seluler membuat banyaknya penggunaan spektrum frekuensi untuk komunikasi seluler. Salah satu frekuensi yang banyak digunakan adalah frekuensi 900 MHz untuk sistem GSM. Dalam jurnal ini menyajikan mengenai perancangan antenna mikrostrip yang dapat digunakan dalam Sistem GSM.. Antena ini dibuat dengan bahan substrat epoxy dengan Konstanta dielektrik (εr)=4.4 dan ketebalan 1.6 mm serta menggunakan saluran pencatuan feed line. Penambahan element menjadi antena array memiliki tujuan untuk meningkatkan nilai gain antena agar dapat meningkatkan daya yang diterima oleh pengguna jaringan dan dapat menambah jarak jangkauan dari BTS menuju perangkat seluler. Dari hasil pengukuran langsung dilaboratorium, didapatkan karakteristik dari antena yang dibuat memiliki besar return loss -11.077 dB, VSWR 1.775, gain 6.8 dBi. Kata kunci— Antena mikrostrip, Gain, Return loss, VSWR, pola radiasi, Linear array ABSTRACTAntennas are very important devices in information delivery technology. Therefore, in this day and age various types of antennas have been developed, one of which is a microstrip antenna. This microstrip antenna has many advantages so it is often used in various cellular devices. The increasing number of mobile device users makes a lot of use of the frequency spectrum for cellular communication. One frequency that is widely used is the 900 MHz frequency for GSM systems. In this journal, it presents the design of microstrip antennas that can be used in GSM systems. This antenna is made with epoxy substrate material with dielectric constant (εr) = 4.4 and thickness of 1.6 mm and using feed line rationing channels. Adding an element to an array antenna has the purpose of increasing the antenna gain value so that it can increase the power received by network users and can increase the range of distance from the BTS to the mobile device. From the results of direct measurements in the laboratory, it was found that the characteristics of the antenna made had a large return loss of -11.077 dB, VSWR 1.775, gain 6.8 dBi.Keywords : microstrip antenna, Gain, Return Loss, Radiation Pattern, Polarization

scholarly journals Design of U-Shaped Slot Quad Band Patch Antenna

2021 ◽  
Vol 16 (3) ◽  
Author(s):  
Kuldip Kumar ◽  
Arun S. Bahuguna ◽  
Yogendra P. Pundir ◽  
Don Biswas
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Dielectric Substrate ◽  
Antenna Gain ◽  
Wireless Devices ◽  
Frequency Bands ◽  
Substrate Layer ◽  
5 Ghz

A four-band microstrip antenna with a U-shaped slot and two straight slots is proposed in this study. As the width of the dielectric substrate layer is extended, the frequency bands and antenna gain are observed to rise. In this current study, the suggested antenna is intended for using in wireless devices operating at frequencies between 5 GHz to 9 GHz.

scholarly journals Wideband Microstrip Dipole Antenna Design for WLAN/WiMAX Applications

2019 ◽  
Vol 8 (2) ◽  
pp. 59-62
Author(s):  
A. Sondas
Keyword(s):  
Wireless Communication ◽  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Narrow Band ◽  
Microstrip Antennas ◽  
Dipole Antenna ◽  
Antenna Design ◽  
Light Weight ◽  
Main Disadvantage ◽  
Low Volume

Recently, microstrip antennas are preferred in all areas of wireless communication, due to their advantages such as low volume coverage, light weight, surface compatibility, high cost requirements and easy production etc. The main disadvantage of these antennas is their narrow band performance (~11%). In the literature, there are some wideband microstrip antenna designs. These broadband characteristics are obtained by changing the antenna geometry or by adding new parasitic patches to the antenna elements. In this study, a classical wideband microstrip dipole antenna (MDA) design which can be used in WLAN/WiMAX applications (covering the bands 2.4–2.5 GHz and 2.5–3.5 GHz) is introduced. The proposed antenna has a pair of twisted strip which are placed asymmetrically near the feed of the dipole element with a length of 52 mm (~λ/2). Also a pair of square loop elements is placed on a sublayer. The proposed MDA has a resonance between 2.06-3.72 GHz with a bandwidth of 57%. The antenna has a directive radiation pattern with a gain of 6.49-3.98 dBi.

Split-ring resonator-based compact microstrip antenna

2019 ◽  
Vol 33 (04) ◽  
pp. 1950043
Author(s):  
Linpeng Li ◽  
Shengze Ye ◽  
Jianchun Xu ◽  
Yanan Hao ◽  
Limin Guo ◽  
...  
Keyword(s):  
Resonant Frequency ◽  
Microstrip Antenna ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Microstrip Antennas ◽  
Split Ring ◽  
Influencing Mechanism ◽  
Low Profile ◽  
Measurement Results ◽  
Good Agreement

Compact microstrip antennas based on split-ring resonator (SRR) structure are proposed and fabricated in this paper. The resonant frequency of the antennas is discussed upon different geometric structures. The influencing mechanism of the antenna parameters on resonant frequency is analyzed. The analytical and experimental analyses are carried out and proved that the resonant frequency can be controlled from 13.5 GHz to 17.2 GHz by tuning some of the crucial parameters. A good agreement between the simulations and the measurement results suggests that the proposed antenna can be designed at different resonant frequencies while maintaining a small-size, low-profile structure and good performance.

Perbandingan Desain Antena Dipole dan Yagi-Uda Menggunakan Material Aluminium pada Frekuensi 470 – 890 MHz

2017 ◽  
Vol 3 (3) ◽  
pp. 140
Author(s):  
Suci Rahmatia ◽  
Putri Wulandari ◽  
Nurul Khadiko ◽  
Fitria Gani Sulistya
Keyword(s):  
Radiation Pattern ◽  
Daily Activity ◽  
Dipole Antenna ◽  
Antenna Gain ◽  
Communication Tool ◽  
Dipole Antennas ◽  
Gain Bandwidth ◽  
Large Gain ◽  
At Home

<p><em>Abstrak </em><strong> - Antena merupakan alat pemancar yang akrab dengan aktifitas sehari-hari dan mudah sekali dijumpai, di rumah, di gedung, bahkan pada alat komunikasi yang digunakan. Salah satu antena yang sering digunakan adalah antena televisi. Antena televisi yang sering digunakan adalah Yagi-Uda yang biasanya dipakai sebagai outdoor antena dan antena dipole yang biasanya digunakan untuk indoor antena. Masing – masing jenis antena memiliki kriteria dan keuntungan berdasarkan dari kebutuhan penggunaannya. Baik antena dipole maupun antena Yagi-Uda memiliki perbedaan diantaranya adalah besar bandwidth, nilai gain, dan pola radiasi. Pada paper ini dapat diketahui bahwa bandwidth yang dimiliki antena yagi-uda lebih besar daripada antena dipole yakni 0.39943 MHz untuk antena yagi-uda dan 0.16569 MHz untuk antena dipole. Begitupula dengan besar Gain yang dimiliki antena Yagi-Uda (6.64 dBi) lebih besar dibandingkan dengan gain dari antena dipole (2.29 dBi). Perbedaan ini dikarenakan faktor elemen director dan ketebalannya.</strong></p><p><strong><br /></strong></p><p><strong><em>Kata Kunci</em></strong> – <em>Atena Televisi, Atena Yagi-Uda, Atena Dipole, Gain, Bandwidth</em></p><p><em> </em></p><p><em>Abstract</em> <strong>- Antenna is a transmitter tool that is familiar with daily activity and easy to find at home, in the building, even on the communication tool used. One of antenna that is often used is a television antenna. Television antennas are often used is Yagi-Uda which is usually used as an outdoor antenna and dipole antenna that is usually used for indoor antennas. Each type of antenna has the criteria and advantages based on the needs of its use. Both dipole antennas and Yagi-Uda antennas have differences among them are bandwidth, gain, and radiation pattern. In this paper it can be seen that the bandwidth of yagi-uda antenna is bigger than dipole antenna that is 0.39943 MHz for Yagi-Uda antenna and 0.16569 MHz for dipole antenna. Neither the large Gain of the Yagi-Uda antenna (6.64 dBi) is greater than the gain of the dipole antenna (2.29 dBi). This difference is due to element factor of director and its thickness.</strong></p><p><strong><br /></strong></p><p><strong><em>Keywords</em></strong><strong> – </strong><em>Television Antenna, Yagi-Uda Antenna, Dipole Antenna, Gain, Bandwidth</em><strong> </strong></p>

scholarly journals Modified Dual-Band Stacked Circularly Polarized Microstrip Antenna

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Guo Liu ◽  
Liang Xu ◽  
Yi Wang
Keyword(s):  
Radiation Pattern ◽  
Global Positioning System ◽  
Microstrip Antenna ◽  
High Performance ◽  
Axial Ratio ◽  
Dual Band ◽  
Optimized Design ◽  
Positioning System ◽  
Circularly Polarized ◽  
Global Positioning

A novel high-performance circularly polarized (CP) antenna is proposed in this paper. Two separate antennas featuring the global positioning system (GPS) dual-band operation (1.575 GHz and 1.227 GHz for L1 band and L2 band, resp.) are integrated with good isolation. To enhance the gain at low angle, a new structure of patch and two parasitic metal elements are introduced. With the optimized design, good axial ratio and near-hemispherical radiation pattern are obtained.

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