scholarly journals Design & Analysis of S-Band Right Hand Circularly Polarized Conical Horn Antenna for NavIC Receiver

2018 ◽  
Vol 7 (3.12) ◽  
pp. 512 ◽  
Author(s):  
Likith N ◽  
Gayathri K M ◽  
Thusshara S ◽  
Maria Sanjeetha ◽  
Thangadurai N
Keyword(s):  
Communication Systems ◽  
Satellite Communication ◽  
Circular Waveguide ◽  
Horn Antenna ◽  
High Gain ◽  
Band Frequency ◽  
Right Hand ◽  
The Right ◽  
Conical Horn ◽  
Very High

In satellite communication systems the horn antennas are being used widely due to its robustness and capable to operate at frequencies which are very high. Here, the right hand circular polarized conical horn antenna is designed for S-band NavIC receiver. The waveguides and conical horn antenna dimensions are designed by using standard formulas and after that they are given to a simulation tool for the S band frequency. The performance parameters like return loss, radiation pattern, gain and directivity are considered for further analysis. In the circular waveguide from the TE11 mode conical horn antenna is to be designed into high gain and a good VSWR.  

scholarly journals A Compact Vivaldi Shaped Partially Dielectric Loaded TEM Horn Antenna for UWB Communication

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Mustafa İlarslan ◽  
A. Serdar Türk ◽  
Salih Demirel ◽  
M. Emre Aydemir ◽  
A. Kenan Keskin
Keyword(s):  
Communication Systems ◽  
Horn Antenna ◽  
High Gain ◽  
Simulation Software ◽  
Antenna Structure ◽  
Horn Antennas ◽  
Compact Antenna ◽  
Uwb Antennas ◽  
Tem Horn ◽  
Uwb Applications

Ultrawideband (UWB) antennas are of huge demand and Vivaldi antennas as well as the TEM horn antennas are good candidates for UWB applications as they both have relatively simple geometry and high gain over a wide bandwidth. The aim of this study is to design a compact antenna that achieves maximum gain over a bandwidth between 1.5 and 10.6 GHz while minimizing its size. The idea is to make use of combined respective advantages of Vivaldi and TEM horn antennas to achieve the desired goals by shaping the TEM horn antenna to look like a Vivaldi antenna. The antenna structure is modified by a dielectric load in the center to increase the gain bandwidth. It is placed in a surrounding box made of PEC material to reduce the undesired side lobes and to obtain more directive radiation pattern. The simulations are performed by using the CST STUDIO SUITE electromagnetic (EM) simulation software and they are later verified by the actual measurements. The Vivaldi shaped partially dielectric loaded (VS-PDL) TEM horn antenna is proposed as a compact UWB antenna for systems using the newly established UWB band and also for the communication systems of popular bands like ISM, Wi-Fi, and GSM.

scholarly journals An All-Metal High-Gain Radial-Line Slot-Array Antenna for Low-Cost Satellite Communication Systems

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 139422-139432
Author(s):  
Mst Nishat Yasmin Koli ◽  
Muhammad U. Afzal ◽  
Karu P. Esselle ◽  
Raheel M. Hashmi
Keyword(s):  
Communication Systems ◽  
Satellite Communication ◽  
Low Cost ◽  
High Gain ◽  
Array Antenna ◽  
Radial Line

scholarly journals Generation of OAM Radio Waves with Three Polarizations Using Circular Horn Antenna Array

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Xudong Bai ◽  
Ronghong Jin ◽  
Liang Liu ◽  
Junping Geng ◽  
Xianling Liang
Keyword(s):  
Antenna Array ◽  
Electric Fields ◽  
Horn Antenna ◽  
Radio Waves ◽  
Effective Solution ◽  
Left Hand ◽  
Right Hand ◽  
Phased Antenna Array ◽  
The Right

This paper provides an effective solution of generating OAM-carrying radio beams with all three polarizations: the linear, the left-hand circular, and the right-hand circular polarizations. Through reasonable configuration of phased antenna array using elements with three polarizations, the OAM radio waves with three polarizations for different states can be generated. The vectors of electric fields with different OAM states for all three polarizations are presented and analyzed in detail. The superposition of two coaxial OAM states is also carried out, and the general conclusion is provided.

Ka Band RF Front-End Design

2018 ◽  
Vol 915 ◽  
pp. 231-236
Author(s):  
Harun Mecidoglu ◽  
Hamid Torpi
Keyword(s):  
Circular Polarization ◽  
Satellite Communication ◽  
Focal Point ◽  
Signal Transmission ◽  
Horn Antenna ◽  
Side Lobe ◽  
High Gain ◽  
Side Lobe Level ◽  
Front End ◽  
Rf Front End

In this thesis, the RF front-end was done at K/Ka (18-27 GHz/26.5-40 GHz) bands used for satellite communication and satellite TV [1]. In this study, vertical polarized signal transmission and horizontal polarized signal reception were performed. The design is set to be compatible with TURKSAT 4B [2]. RF front-end is consist of an offset dish providing high gain and low side lobe level (SLL) for collecting the signal, a circular horn antenna which is compatible with RHCP (Right Hand Circular Polarization) and LHCP (Left Hand Circular Polarization) polarizations at the focal point of the dish, to separate dual polarization an orthomode transducer (OMT) and a transmit reject filter to prevent the receiver from the strong signal generated at the transmitter side (cross-pol). In the design waveguide structures is used to work in microwave frequencies and for high power delivery requirements. AWR Microwave Office, Computer Simulation Technology (CST) and MATLAB (Matrix Laboratory) programs are used for simulation, optimization and calculations.

scholarly journals Potential Benefits of Dynamic Beam Synthesis to Mobile Satellite Communication, Using the Inmarsat 4 Antenna Architecture as a Test Example

2009 ◽  
Vol 2009 ◽  
pp. 1-5 ◽  
Author(s):  
R. F. E. Guy
Keyword(s):  
Communication Systems ◽  
Satellite Communication ◽  
High Gain ◽  
Significant Loss ◽  
Pointing Errors ◽  
Antenna Performance ◽  
Potential Benefits ◽  
Spatial Isolation ◽  
Mobile Satellite ◽  
Mobile Satellite Communication

Present mobile satellite communication systems use large antennas to provide multiple high-gain beams. Each beam covers a fixed geographic cell on the earth. Spatial frequency reuse is provided by synthesising beams with low-power levels over all cells operating at the same frequency. The performance needs for future systems are steadily increasing, leading to higher-gain requirements, which are met by using larger antennas with narrower beams. So the antenna pointing errors become a significant loss factor. An alternative approach is to abandon the use of fixed beams and dynamically synthesise the beams to optimise the antenna performance in real time. This both increases user gain and lowers cofrequency interference whilst also reducing the effects of pointing errors. Simulations, using the Inmarsat 4 antenna architecture as a test example, show that the spatial isolation performance can be significantly improved by using Dynamic Beam Synthesis.

Design of a Novel Microstrip-Feed Waveguide Horn Antenna for Ku-Band Satellite Communications

2013 ◽  
Vol 765-767 ◽  
pp. 2754-2757
Author(s):  
Ping Li ◽  
Dian Fu Zhang ◽  
Wei Dong Hu ◽  
Yu Peng
Keyword(s):  
Communication System ◽  
Satellite Communication ◽  
Small Volume ◽  
Horn Antenna ◽  
Satellite Communications ◽  
High Gain ◽  
Perfect Conductor ◽  
Satellite Communication System ◽  
Communications System ◽  
Microstrip Feed

Traditional land satellite communication system mostly use parabolic antenna, which is bulky and inflexible. Microtrip arraying antenna also can be used as the antenna of land satellite communication system, however, the microtrip antenna has a low gain and a large loss. In this paper, a novel waveguide horn antenna is designed. The radiation layer is perfect conductor with a octagonal hole in the center. the feeding layer is double orthogonal microstrip-feed plane to achieve bipolaron. The unit antenna size is only 21mm 21mm2.2mm. Gain of 2 2 array was 15dB. The antenna had a simple structure, small volume and high gain, particularly suitable for land satellite communications system.

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