Achieving broad absorption bandwidth of the Co/carbon absorbers through the high-frequency structure simulator electromagnetic simulation

2021 ◽  
pp. 160918
Author(s):  
Ning Zhang ◽  
Minyang Han ◽  
Gehuan Wang ◽  
Yue Zhao ◽  
Weihua Gu ◽  
...  
Keyword(s):  
High Frequency ◽  
Electromagnetic Simulation ◽  
Broad Absorption ◽  
Absorption Bandwidth ◽  
High Frequency Structure Simulator ◽  
Frequency Structure

Comb Shaped Triple Band Microstrip Antenna for Wireless Communication

2021 ◽  
Vol 9 (4) ◽  
pp. 379-382
Keyword(s):  
Dielectric Constant ◽  
Wireless Communication ◽  
High Frequency ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Experimental Results ◽  
High Frequency Structure Simulator ◽  
Frequency Structure ◽  
Triple Band

A comb shaped microstrip antenna is designed by loading rectangular slots on the patch of the antenna. The antenna resonating at three different frequencies f1 = 5.35 GHz, f2 = 6.19 GHz and f3= 8.15 GHz. The designed antenna is simulated on High Frequency Structure Simulator software [HFSS] and the antenna is fabricated using substrate glass epoxy with dielectric constant 4.4 having dimension of 8x4x0.16 cms. The antenna shows good return loss, bandwidth and VSWR. Experimental results are observed using Vector Analyzer MS2037C/2.

A New Design of Ka-Band Circularly-Polarized Antenna

2014 ◽  
Vol 631-632 ◽  
pp. 383-386
Author(s):  
Jiao Jiao Fan ◽  
Jian Li ◽  
Dan Song ◽  
Li Wu ◽  
Shu Sheng Peng
Keyword(s):  
High Frequency ◽  
Circular Waveguide ◽  
Ka Band ◽  
Circularly Polarized ◽  
Simulation And Optimization ◽  
Total Height ◽  
High Frequency Structure Simulator ◽  
Frequency Structure ◽  
Low Profile ◽  
Linearly Polarized

A new ka-band circularly-polarized antenna is presented in this paper, in which a linearly-polarized wave is conversed into a circularly-polarized wave with a circular waveguide polarizer. After simulation and optimization with HFSS (High Frequency Structure Simulator), a compact circularly-polarized antenna is designed with a total height less than 25mm. More simple and easier structure is adopted to achieve a low-profile circularly-polarized antenna.

scholarly journals Design of Wideband Antenna Array for WiMax Application

2021 ◽  
Vol 9 (8) ◽  
pp. 958-962
Author(s):  
Rakesh N
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
High Frequency ◽  
Return Loss ◽  
Flow Solver ◽  
Wideband Antenna ◽  
Circular Patch ◽  
High Frequency Structure Simulator ◽  
Frequency Structure ◽  
Circular Patch Antenna

Abstract: The evolution of wireless communication system has led path for innovative antenna design specifically in wideband antenna for WiMax application. In this paper design and simulation of microstrip wideband circular patch antenna array operating between 2GHz to 4Ghz is presented. The circular patch antenna is designed to operate at 3GHz line feed and the ground is itched to achieve required wideband characteristics. The simulation is carried out in EM Flow solver, High Frequency Structure Simulator software. For a single patch antenna, the return loss, lesser than -10dB throughout the bandwidth. Later an antenna array is operating between 2GHz to 4GHz frequency is designed and simulated. The return loss is lesser than -12dBi throughout the band and a peak gain is 14.7dBi. Keywords: Microstrip Patch Antenna (MPA), High Frequency Structure Simulator (HFSS).

Novel Compact Interdigital Bandpass Filters with Multilayer Stepped Impedance Resonators/Folded Quarter–Wavelength Resonators

2013 ◽  
Vol 547 ◽  
pp. 19-24
Author(s):  
Jia Min Wu ◽  
Tian Bai ◽  
Wen Zhong Lu ◽  
Fei Liang ◽  
Bin Luo
Keyword(s):  
High Frequency ◽  
Bandpass Filters ◽  
Excellent Performance ◽  
High Frequency Structure Simulator ◽  
Dielectric Layers ◽  
Frequency Structure ◽  
Quarter Wavelength ◽  
Two Measures ◽  
Novel Structures

Novel compact interdigital bandpass filters (BPFs) which used multilayer stepped impedance resonators (SIRs)/folded quarter–wavelength resonators were presented. Two measures were taken to reduce the sizes of the proposed filters. Firstly, two resonators (SIRs and folded quarter–wavelength resonators) with novel structures were designed. Secondly, all the designed resonators were located on different dielectric layers. The proposed interdigital BPFs, which were simulated with the high frequency structure simulator (HFSS), show excellent performance and could realize the miniaturization purpose. Furthermore, it is found that the proposed filter with folded quarter–wavelength resonators is more excellent in realizing miniaturization and improving performance than that with SIRs.

scholarly journals Perancangan Antena Mikrostrip Siw Cavity-Backed Modified Dumbell-Shaped Slot Untuk Pengaplikasian Pada 5G

2020 ◽  
Vol 11 (2) ◽  
pp. 115
Author(s):  
Sepryanto Sepryanto ◽  
Said Attamimi ◽  
Fadli Sirait
Keyword(s):  
High Frequency ◽  
Substrate Integrated Waveguide ◽  
High Frequency Structure Simulator ◽  
Frequency Structure ◽  
4G Lte

Perkembangan teknologi dan informasi yang semakin meningkat mengakibatkan kebutuhan masyarakat juga semakin meningkat salah satunya adalah kebutuhan akan teknologi telekomunikasi seluler tanpa kabel (wireless). Perkembangan teknologi seluler di Indonesia yang terakhir berkembang sejak tahun 2010 adalah 4G LTE yang berada pada pita frekuensi yang telah ditentukan pemerintah. Perkembangan teknologi wireless di Indonesia juga sudah sampai pada teknologi 5G, didukung dengan adanya beberapa kajian mengenai implementasi 5G di Indonesia. Frekuensi untuk teknologi 5G termasuk ke dalam frekuensi tinggi, yaitu frekuensi dengan panjang gelombang yang kecil, frekuensi ini yang disebut sebagai millimeterwave (mmWave). Dalam penelitian ini dilakukan perancangan antena Substrate Integrated Waveguide (SIW) yang dibuat menggunakan PCB berjenis FR4 epoxy dengan ketebalan 1,6 mm dan nilai konstanta dielektrik 4.4-4.9, yang bekerja pada frekuensi 28 GHz, dengan menambahkan slot untuk memperbesar gain antena. Perancangan dilakukan menggunakan software Ansoft High Frequency Structure Simulator (HFSS) v16.0. Sedangkan pengukuran antena dilakukan di Laboratorium Pusat penelitian Elektronika dan Telekomunikasi LIPI Bandung. Hasil simulasi antena bekerja pada frekuensi 27,9 – 29,3 GHz dengan bandwidth 1,4 GHz dan faktor refleksi mencapai -27,43 dB. Sementara hasil pengukuran menunjukan antena bekerja pada frekuensi 29,56 – 30,66 GHz dengan bandwidth 1,1 GHz dan faktor refleksi -24,35 dB. Hasil simulasi menunjukkan adanya peningkatan gain, dengan peningkatan gain paling maksimum yaitu sebesar 5,49 dB. Perbedaan ini mungkin disebabkan kesalahan dalam proses fabrikasi, proses menyolder yang tidak sempurna serta kesalahan dalam pengambilan data pengukuran

Study on Electronic Materials with Performance of Meander-Line Inverted-F Antenna

2014 ◽  
Vol 886 ◽  
pp. 386-389
Author(s):  
Jing Wei Wu ◽  
Wei He ◽  
Dan Su ◽  
Jing Mo
Keyword(s):  
Resonant Frequency ◽  
High Frequency ◽  
Electronic Materials ◽  
Performance Parameters ◽  
Resonance Point ◽  
Frequency Resonance ◽  
High Frequency Structure Simulator ◽  
Frequency Structure ◽  
Meander Line ◽  
Meander Lines

Inverted-F antenna loaded meander-line was studied by using High Frequency Structure Simulator V11(hereinafter referred to as HFSS V11). Research had focused on main performance parameters of Inverted-F antenna which loaded different number of meander-lines and different height of meander-lines. According to research, main performance parameters of inverted-F antenna, such as resonant frequency, resonance impedance and S11 parameter of resonance point could be adjusted effectively. Inverted-F antenna could be miniaturized effectively by selecting appropriate number and height of meander-lines. The technology of loaded meander-line is a kind of simple and effective way that can be applied to the RFID field and other areas that have high requirements for miniaturization of antenna.

scholarly journals Design and Optimization of Rectangular Waveguide Filter based on Direct Coupled Resonators

2017 ◽  
Vol 63 (4) ◽  
pp. 375-380 ◽  
Author(s):  
Mehdi Damou ◽  
Keltouma Nouri ◽  
Mohammed Feham ◽  
Mohammed Chetioui
Keyword(s):  
Fourth Order ◽  
High Frequency ◽  
Rectangular Waveguide ◽  
Design Procedure ◽  
Center Frequency ◽  
Coupled Resonators ◽  
High Frequency Structure Simulator ◽  
Filter Structure ◽  
Frequency Structure ◽  
Waveguide Filter

Abstract The waveguide filter structure is treated by two softwares (HFSS (High Frequency Structure Simulator) and CST (Computer Simulation Technology)). Numerical example is given in this article to demonstrate, step by step, the application of the approach to the design of resonator, direct coupled waveguide and microstrip filters based on electromagnetic (EM) simulations. For this design procedure, the filter structure is simulated by successively adding one resonator at a time. To continue the work illustrates how to design a fourth order coupled resonator based rectangular waveguide circuit in the traditional way. With a large number of variables, such tuning work consumes a lot of time and the convergence of the final result is not guaranteed. A fourth order X-band bandpass filter with a center frequency of 11 GHz and a fractional bandwidth FBW = 0,0273 is designed using this procedure and presented here as an example. The simulated results by CST are presented and compared withthe results simulated by a high-frequency structure simulator. Good agreement between the simulated HFSSand simulated results by CST is observed.

Microstrip-line-fed inverted L-shaped circularly polarized antenna for C-band applications

2021 ◽  
pp. 1-9
Author(s):  
Karunesh Srivastava ◽  
Brijesh Mishra ◽  
Rajeev Singh
Keyword(s):  
Circular Polarization ◽  
High Frequency ◽  
Microstrip Line ◽  
Ground Plane ◽  
Axial Ratio ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
High Frequency Structure Simulator ◽  
Frequency Structure ◽  
Peak Gain

Abstract A circularly polarized stub-matched inverted L-shaped antenna for C-band applications is presented in this communication. Antenna parameters of inverted L-shape on the radiating patch and slits, notch, square strips and stub on the ground plane and the effect of these are analyzed. The proposed optimized antenna (A5: 0.54λ0 × 0.54λ0 × 0.02λ0 mm3) is selected among antennas (A1 – A5) with 5.1 GHz design frequency after simulation through high-frequency structure simulator (HFSS). Circular polarization is obtained by introducing stub/perturbation on the ground plane. By introducing stub, the highest measured (S11 < − 10 dB) impedance bandwidth of 50.9% (3.48 – 5.86 GHz) is observed amongst the reported and compared bandwidths. Peak gain of 5.32 dBi and 3 dB axial ratio bandwidth of 16.2% (4.71 – 5.54 GHz) is reported in the present work. An antenna is useful in the entire downlink frequency (3.7 – 4.2 GHz) of the C band.

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