Quad Band Planar Inverted F Antenna for Smart Phone

2014 ◽  
Vol 573 ◽  
pp. 394-399
Author(s):  
R. Manikandan ◽  
P.K. Jawahar
Keyword(s):  
High Frequency ◽  
Smart Phone ◽  
Analysis And Design ◽  
High Frequency Structure Simulator ◽  
Low Profile ◽  
Resonance Frequencies ◽  
Theoretical Predictions ◽  
Communication Devices ◽  
Device Miniaturization ◽  
Good Agreement

In recent years, the demand for compact handheld communication devices has grown significantly. For device miniaturization antenna size is to be reduced. Micro strip and PIFA have been used for past few years. Since it has low profile geometry it can be embedded into devices. This project is to develop a Quad band small size Planar Inverted F Antenna (PIFA) for the operation in modern multi-band mobile transceiver system. Various techniques for analysis and design of such antenna investigated in this project. The design curve is used to design Quad band Planar inverted F Antenna to operate at the 900, 1800, 2100 and 3500 MHz bands. Since High Frequency Structure Simulator (HFSS) simulation result agrees well with the theoretical predictions, this project also designed through HFSS. An antenna designed at the four desired band and optimized to adjust the four resonance frequencies using HFSS simulation. The substrate FR4 (εr=4.4 & tanδ = 0.02) are in good agreement with the simulation result. Further bandwidth enhancements by making defects in the substrate at particular area were need of much reflection.

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 Low-Profile Spidron Fractal Dipole Antenna with a Ferrite-Loaded Artificial Magnetic Conductor for Manpack Applications

2020 ◽  
Vol 10 (24) ◽  
pp. 8843
Author(s):  
Oh Heon Kwon ◽  
Keum Cheol Hwang
Keyword(s):  
High Frequency ◽  
Dipole Antenna ◽  
Magnetic Conductor ◽  
Very High Frequency ◽  
Artificial Magnetic Conductor ◽  
Received Power ◽  
Low Profile ◽  
Profile Characteristics ◽  
Very High ◽  
Good Agreement

In this paper, a Spidron fractal dipole antenna with a ferrite-loaded artificial magnetic conductor (AMC) is presented. By applying ferrite composed of nickel–zinc with a high permeability value, a compact AMC that operates in the broadband frequency range within the high-frequency/very-high-frequency/ultra-high-frequency (HF/VHF/UHF) bands was designed. A Spidron fractal-shaped dipole antenna with a quasi-self-complementary structure was designed and combined with a miniaturized ferrite-loaded AMC. This allowed the designed AMC-integrated dipole antenna to operate in a wide frequency band, covering the HF/VHF/UHF bands, with low-profile characteristics. A prototype of the proposed Spidron fractal dipole antenna with the AMC was manufactured and measured and found to meet low VSWR (voltage standing wave radios) specifications of <3.5 within the 20–500 MHz bandwidth range. The simulated and measured results are in good agreement. The size of the Spidron fractal dipole antenna with the AMC is 0.03×0.026×0.001λ3 relative to the wavelength of the lowest operating frequency. The received power of the Spidron fractal dipole antenna with the AMC was also measured when it was applied to relatively small applications, such as a manpack in this case.

scholarly journals THE NUCLEAR SPIN RESONANCE SPECTRUM OF Al27 IN SPODUMENE

1958 ◽  
Vol 36 (10) ◽  
pp. 1295-1307 ◽  
Author(s):  
L. B. Robinson
Keyword(s):  
Nuclear Spin ◽  
Resonance Spectrum ◽  
Companion Paper ◽  
Quadrupole Interactions ◽  
Resonance Frequencies ◽  
Spin Resonance ◽  
Theoretical Predictions ◽  
Induction Type ◽  
First Time ◽  
Good Agreement

An experimental study has been made of the nuclear spin resonance spectrum of Al27 in a single crystal of spodumene (LiAl(SiO3)2) over a range of external magnetic field H0 wide enough [Formula: see text] to bridge for the first time the gap between pure quadrupole spectra (R = 0) and Zeeman spectra slightly perturbed by quadrupole interactions [Formula: see text]. Experimental results on the resonance frequencies and relative signal amplitudes obtained with an induction type of nuclear resonance spectrometer are described, and are found to be in good agreement with the theoretical predictions given in the preceding companion paper.

scholarly journals A Defected Structure Shaped CPW-Fed Wideband Microstrip Antenna for Wireless Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Puneet Khanna ◽  
Amar Sharma ◽  
Kshitij Shinghal ◽  
Arun Kumar
Keyword(s):  
Patch Antenna ◽  
High Frequency ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Coplanar Waveguide ◽  
Network Analyzer ◽  
Large Space ◽  
Wireless Applications ◽  
High Frequency Structure Simulator ◽  
Good Agreement

A coplanar waveguide- (CPW-) fed compact wideband defected structure shaped microstrip antenna is proposed for wireless applications. Defected structure is produced by cutting theUshape antenna in the form of two-sided T shape. The proposed antenna consists of two-sidedTshape strip as compared to usual monopole patch antenna for minimizing the height of the antenna. The large space around the radiator is fully utilized as the ground is on the same plane as of radiator. Microstrip line feed is used to excite the proposed antenna placed on an FR4 substrate (dielectric constantεr=4.4). The antenna is practically fabricated and simulated. Simulated results of the proposed antenna have been obtained by using Ansoft High-Frequency Structure Simulator (HFSS) software. These results are compared with measured results by using network analyzer. Measured result shows good agreement with the simulated results. It is observed that the proposed antenna shows a wideband from 2.96 GHz to 7.95 GHz with three bands atf1=3.23 GHz,f2=4.93 GHz, andf3=7.04 GHz.

scholarly journals Low Profile Wideband Dual-Ring Slot Antenna for Biomedical Applications

2021 ◽  
Vol 19 ◽  
pp. 38-44
Author(s):  
Shilpee Patil ◽  
Vinod Kapse ◽  
Shruti Sharma ◽  
Anil Kumar Pandey
Keyword(s):  
High Frequency ◽  
Biomedical Applications ◽  
Return Loss ◽  
Impedance Matching ◽  
Slot Antenna ◽  
Great Flexibility ◽  
High Frequency Structure Simulator ◽  
Large Bandwidth ◽  
Low Profile ◽  
Dual Ring

In this study, a low-profile, co-planar waveguide (CPW) fed, wideband, and dual-ring slot antenna design for biomedical applications is proposed. The proposed antenna has a total area of 10 mm × 10 mm and a height of 0.4 mm, and is designed by using a thin and biocompatible FR4 epoxy (εr = 4.4) substrate to accomplish human body isolation and great flexibility obtained by implantation. This wideband antenna covers a large bandwidth of industrial scientific and medical (ISM) frequency band, including 902.8 MHz to 928 MHz, 1.395 GHz to 1.4 GHz, 1.427 GHz to 1.432 GHz, 2.4 GHz to 2.485 GHz, and above. The simulation results of return loss, voltage standing wave ratio (VSWR), impedance matching, gain, and radiation pattern of the proposed antenna are obtained through High Frequency Structure Simulator (HFSS) 14 software.

Design and Optimization of Rectangular Patch Antenna Based on FR4, Teflon and Ceramic Substrates

2019 ◽  
Vol 12 (4) ◽  
pp. 368-373
Author(s):  
Manickam Karthigai Pandian ◽  
Thangam Chinnadurai
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ceramic Substrates ◽  
Design And Optimization ◽  
High Frequency Structure Simulator ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
Low Profile ◽  
Low Profile Antennas ◽  
Communication Devices

Background: Modern communication devices are very much dependent on the operation of low profile antennas. The objective of this paper is to perform the design and simulation of a rectangular microstrip patch antenna at a resonant frequency of 9.5 GHz. Methods: Design of the antenna is given with various substrates like FR4, Teflon and Ceramic substrates at the desired frequency. For each substrate, the performance of the antenna is measured in terms of its return loss and Voltage Standing Wave Ratio (VSWR). Results: Ansoft High-Frequency Structure Simulator is used to simulate the antenna characteristics. Conclusion: Performance characteristics of the antenna with three different substrates are compared to identify the substrate that provides the accurate return loss and VSWR.

Design of Circular Microstrip Patch Antenna for WLAN Application

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Basavalinga Swamy ◽  
C M Tavade ◽  
Kishan Singh
Keyword(s):  
High Frequency ◽  
Local Area Network ◽  
Local Area ◽  
Dielectric Substrate ◽  
Area Network ◽  
High Frequency Structure Simulator ◽  
Microstrip Patch ◽  
Low Profile ◽  
Patch Configuration ◽  
Profile Characteristics

A roundabout microstrip fixes receiving wire is planned in this paper. The recommended receiving wire for remote neighborhood [WLAN] utilizes a 2.4GHz resounding recurrence. There are numerous different sorts of receiving wires, however, we'll zero in on roundabout radio wires, which are worked to support the resounding recurrence referenced previously. As a result of this recurrence determination, the radio wire is ideal for utilization in a remote Local Area Network [WLAN]. The High-Frequency Structure Simulator programming HFSS's optometric is used to make the proposed receiving wire more exact and proficient. Receiving wire plan enhancement is a term used to depict the way toward further developing the radio wire Model of a microstrip line. The HFSS programming was utilized to imitate the technique. This radio wire is made out of FR4 material, and the conditions for roundabout Patch configuration are presented and approved by all-around reproduced results. This radio wire has a 50-ohm input impedance and is based on an FR4 Epoxy dielectric substrate with a general permittivity of 4.4, a thickness of 1.60mm, and an overall permittivity of 4.4. The fundamental design and low profile characteristics of the recommended radio wire simplify it to deliver and are ideal for use in Wi-Fi organizations.

Membrane antenna array based on substrate integrated waveguide technology for 94 GHz communication systems

2015 ◽  
Vol 8 (3) ◽  
pp. 633-641
Author(s):  
Hamsakutty Vettikalladi ◽  
Muhammad Kamran Saleem ◽  
Majeed A.S. Alkanhal
Keyword(s):  
High Frequency ◽  
Communication Systems ◽  
Impedance Bandwidth ◽  
Single Element ◽  
Substrate Integrated Waveguide ◽  
Rectangular Slot ◽  
High Frequency Structure Simulator ◽  
Microstrip Patch ◽  
5 Ghz ◽  
Good Agreement

The design and the results of a single slot coupled substrate integrated waveguide (SIW)-fed membrane antenna and a 1 × 4 array is presented for 94 GHz communication system. The membrane antenna is designed using Ansys high frequency structure simulator and consists of six layers. The microstrip patch antenna placed on the top pyralux substrate layer is excited by means of a longitudinal rectangular slot placed over the SIW structure in the bottom pyralux substrate. The simulated antenna impedance bandwidth is found to be 5 GHz (91.5–96.5 GHz) for both single element and 1 × 4 array. Furthermore, the gain is found to be 7 and 13 dBi for the single element and the 1 × 4 array elements, respectively. The results are verified using Computer Simulation Technology (CST) Microwave Studio and are found to be in good agreement.

scholarly journals Low Cost Antenna Design for the Application of Over the Horizon Surface Wave Radar

2019 ◽  
Vol 9 (2) ◽  
pp. 2215-2218
Keyword(s):  
Surface Wave ◽  
High Frequency ◽  
Return Loss ◽  
Linear Array ◽  
Low Cost ◽  
Antenna Design ◽  
High Frequency Structure Simulator ◽  
Water Region ◽  
Wave Radar ◽  
Communication Devices

The need for surveillance and security in Indonesian water region which can monitor activities of distance object such as illegal fishing, foreign vessels violation, piracy of vessels and smuggling can be done by using radio wave. Maritime radar over the horizon (OTH) surface wave is able to detect the existence of foreign vessels in Indonesian waters. Based on this, the study aimed to design a low cost antenna namely Yagi - Uda linear array antenna at 15 MHz frequency at frequency range 6 – 24 MHz for the application of over the horizon radar. Yagi - Uda antenna is superior in the spread of wave suitable to OTH Radar characteristic over the sea surface and big gain. Yagi - Uda antenna develops rapidly in communication system makes it applied in many modern communication devices nowadays. This antenna was designed and simulated using Simulator Ansoft High Frequency Structure Simulator (HFSS) version 13. The simulation result of the antenna design after doing optimization was return loss (S11) = -29,62 dB, VSWR = 1.068 and gain = 2,413 dBm.

scholarly journals Fractal Antenna Design for Various Multiband Applications

2019 ◽  
Vol 8 (6S3) ◽  
pp. 1813-1816
Keyword(s):  
High Frequency ◽  
Power Transmission ◽  
Antenna Design ◽  
Light Weight ◽  
Fractal Antenna ◽  
Wireless Power ◽  
High Frequency Structure Simulator ◽  
Rectangular Patch ◽  
Low Profile ◽  
5 Ghz

In this paper “Micro Strip Patch Antenna (F-MSPA)” based on fractal is proposed to perform operations over multiband for a specific time bound. This is designed specifically for “Wireless Power Transmission (WPT)” System which is light weight or it is low profile and light weight when implemented. The main aim of proposed methodology or design of antenna is attained by implementing the basic patch called as the rectangular patch, whose scope is till the third level. Based on this the shape of rectangular cuttings are obtained. The antenna is excited by the obtained or generated micro strip feed as the operations of antenna are performed over various frequency ranges between 1GHz to maximum of 5 GHz. The proposed method comprises of fractal antenna resonant with quad frequencies that ranges: 1.86GHz / 2.29GHz / 3.02GHz / 4.50GHz along with their generated loss values are 13.59dB / -23.66dB / -15.94dB / -15.69dB. Proposed antenna simulation is performed using Ansoft HFSSv13 a high frequency structure simulator.

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