Madhura G. Hegde, V. Shambulingappa, P. Mahima, R. Athira, R. U. Nair, S. Narayan
{"title":"EM design of active metamaterial based airborne radome for electronic warfare applications","authors":"Madhura G. Hegde, V. Shambulingappa, P. Mahima, R. Athira, R. U. Nair, S. Narayan","doi":"10.1109/IAIM.2017.8402608","DOIUrl":"https://doi.org/10.1109/IAIM.2017.8402608","url":null,"abstract":"The EM design and analysis of active hybridelement metamaterial-based radome has been presented for electronic warfare applications. The proposed metamaterial (MTM) element is loaded with varactor diode and embedded into the mid-plane of the monolithic radome wall. The EM analysis of proposed monolithic radome is carried out with and without varactor diode based on full-wave method. At 0-volt bias voltage of varactor, it exhibits 2.56 GHz bandwidth w.r.t. center frequency 9 GHz corresponding to 90% transmission efficiency (∼ −0.4 dB transmission loss), which is similar to that of radome without varactor. At maximum reverse voltage (14.95 volts), the center frequency is shifted to 9.95 GHz and shows better transmission efficiency as compared to the radome without varactor. However, the bandwidth reduces to 0.75 GHz due to increase in the varactor diode capacitive effect, which is sufficient for modern radar systems. Thus operating frequency of proposed active radome can be tuned over the frequency range of 9-9.95 GHz during the operation of the radome system.","PeriodicalId":396210,"journal":{"name":"2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127552962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Frequency and polarization reconfigurable antenna using BLC feed network","authors":"M. S. Kumar, Y. Choukiker","doi":"10.1109/IAIM.2017.8402550","DOIUrl":"https://doi.org/10.1109/IAIM.2017.8402550","url":null,"abstract":"Frequency and polarization reconfigurable patch antenna design with varactor diode and branch line coupler feed network is presented. The frequency tuning, achieved tunable impedance bandwidth from 2.34 GHz to 2.68GHz by varying the four varactor diode capacitance value between 12.33pF to 1.30pF and circular polarization using dual probe feed method. Then additional BLC feed network is used to control simultaneously both frequency tunability from 2.05 GHz to 3.13GHz and polarization which is used for S-Band application.","PeriodicalId":396210,"journal":{"name":"2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123865764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Devi, J. Aarthi, P. Bhargav, R. Pandeeswari, M. Reddy, R. Daniel
{"title":"UWB frequency reconfigurable patch antenna for cognitive radio applications","authors":"G. Devi, J. Aarthi, P. Bhargav, R. Pandeeswari, M. Reddy, R. Daniel","doi":"10.1109/IAIM.2017.8402576","DOIUrl":"https://doi.org/10.1109/IAIM.2017.8402576","url":null,"abstract":"In this paper two ultra wide band frequency reconfigurable microstrip patch antennas for cognitive radio applications were designed. The proposed antenna designs consist of a rectangular patch with microstrip feed-line, and a partial ground plane. Slots were introduced in patch and ground plane to enhance the bandwidth. The radiating element of dimension 10.5mm×14mm (L×W) was placed on FR-4 epoxy dielectric substrate with relative permittivity of 4.4. The antennas have the same patch structure but different ground plane structures. Each of the antennas can operate in UWB (3.1GHz- 10.6 GHz) range and their corresponding sub bands. Switching from UWB to sub bands is enabled by PIN diodes placed in the horizontal slot(s) in the ground plane. HFSS has been used for designing the antennas and the simulated results show that the proposed antennas have a return loss greater than 10dB over the required bandwidth of operation.","PeriodicalId":396210,"journal":{"name":"2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM)","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122935447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design, analysis and characterization of tunable dual band planar antenna for WLAN applications","authors":"D. Maharshi, Nidhi Pandit, N. Pathak","doi":"10.1109/IAIM.2017.8402588","DOIUrl":"https://doi.org/10.1109/IAIM.2017.8402588","url":null,"abstract":"This paper reports study of simple dual band and tunable dual band antenna for WLAN application (i.e. 2.4 GHz and 5.8 GHz). The CAD based design and simulation has been performed using Computer Simulation Technology (CST) and Advance Design System (ADS). Varactor diode SMV2020- 079LF has been used as tuning element. Validation of the design has been done through realizing hardware prototype of design on FR4 substrate. Measurement of fabricated prototype has been performed using Keysight Field-Fox Vector network analyzer N9918A. Measured results depicts that both the desired frequency bands of WLAN have sufficient gain and bandwidth for designed antenna. Simulated and measured results are in good agreement for the proposed work.","PeriodicalId":396210,"journal":{"name":"2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131605653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of 60 GHz ridge gap waveguide based junctions, bends and losses","authors":"Shraman Gupta, Z. Briqech, A. Sebak","doi":"10.1109/IAIM.2017.8402635","DOIUrl":"https://doi.org/10.1109/IAIM.2017.8402635","url":null,"abstract":"A comparative study on T and Y junctions based on metal ridge gap waveguide is presented for 57-64 GHz band applications. This study investigates the insertion losses of the ridge gap bends effect on two elements of T and Y junction divider. The T-junction divider has insertion losses of 0.25-0.3 dB whereas the Y-junction divider has around 0.15-0.2 dB over the whole 60GHz unlicensed band. The port modeling using the waveguide ports and P/I2 approximation method is illustrated. The design of the pins and guiding ridges is discussed in this paper along with the electric current distributions at various angles of bends. This investigation on ridge gap waveguide based bends is helpful in designing high gain millimeter array system.","PeriodicalId":396210,"journal":{"name":"2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132598699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A quarter-mode SIW based antenna for ISM band application","authors":"D. Chaturvedi, S. Raghavan","doi":"10.1109/IAIM.2017.8402617","DOIUrl":"https://doi.org/10.1109/IAIM.2017.8402617","url":null,"abstract":"In this paper, a planar substrate integrated waveguide (SIW) cavity-backed antenna is proposed for the Industrial scientific and medical radio band (5.725-5.875 GHz) at 5.8 GHz. The miniaturization is achieved by 3/4th of the conventional circular SIW cavities by using the quarter-mode SIW technique. Later on, to enhance bandwidth, a tilted rectangular-slot is etched to realize coupling of two higher order modes TM210 and TM020. The simulated impedance bandwidth and the peak gain of the proposed antenna are obtained of 350 MHz and 7.5 dBi in free space. In order to see the influence of human body on the antenna performance, it is simulated over pork muscle equivalent phantom. The impedance bandwidth and peak gain for on-phantom are obtained of 352 MHz and 7.76 dBi, respectively. The performance of the antenna does not vary from free space to on-phantom, which confirms the proposed antenna is robust and fit for off-body communication.","PeriodicalId":396210,"journal":{"name":"2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134017875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. P. Kumar, B. S. Reddy, P. Sitaraman, M. Kumar, C. Kumar
{"title":"An important aspect of using stub matching at high frequency: Investigation with measured results of a ku-band planar array antenna","authors":"B. P. Kumar, B. S. Reddy, P. Sitaraman, M. Kumar, C. Kumar","doi":"10.1109/IAIM.2017.8402570","DOIUrl":"https://doi.org/10.1109/IAIM.2017.8402570","url":null,"abstract":"In this paper, an interesting observation that is seen when stub matching is implanted in a planar array antenna is explained. An 8×8 Ku-Band planar array antenna with a common aperture and radiating element fed with different feed networks for two frequencies is designed, fabricated and tested for its performance at a compact antenna test range. Measured gain at one of the frequency is about 8 dB less than the expected value. An investigation is carried out to understand this anomalous behavior of the antenna. Simulations carried out in a CAD tool revealed that the stub used for impedance matching indeed is radiating with a gain of more than 7 dBi and this is the reason for the reduction of gain in the required polarization. The design is now modified without the stub and successfully tested.","PeriodicalId":396210,"journal":{"name":"2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132123294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. M. Rathod, R. Awale, K. P. Ray, Amar D. Chaudhari
{"title":"Compact wideband arrow shaped microstrip antenna for wireless communication systems","authors":"S. M. Rathod, R. Awale, K. P. Ray, Amar D. Chaudhari","doi":"10.1109/IAIM.2017.8402544","DOIUrl":"https://doi.org/10.1109/IAIM.2017.8402544","url":null,"abstract":"In this paper, a compact configuration of a single layer, wideband gap coupled arrow shaped half-hexagonal microstrip antenna (H-HMSA) has been proposed for wireless communication systems. The gap coupled H-HMSA structure is fed by an indirect pair of a λ/4 resonator. Wide bandwidth (BW) is achieved with the effective use of resonance introduced by λ/4 resonator and gap coupled half hexagonal radiating patch. The proposed antenna methodology with working principle is broadly characterized. Also, investigation on the performance of the proposed antenna configuration with a variation of parameters via coupling gap, the length and width of a pair of the λ/4 resonator has been presented. A peak gain of 6 dB and VSWR ≤ 2 BW of 8% is achieved. In addition, broadside radiation pattern has been obtained across the VSWR≤ 2 BW. The measured results are in good agreement with simulated results.","PeriodicalId":396210,"journal":{"name":"2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134624124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Vincent, Sharmila Anand John Francis, O. Kumar, K. Raimond
{"title":"Optimization of gain and return loss of a 2 × 6 planar coaxial cavity horn antenna array for MELISSA","authors":"S. Vincent, Sharmila Anand John Francis, O. Kumar, K. Raimond","doi":"10.1109/IAIM.2017.8402612","DOIUrl":"https://doi.org/10.1109/IAIM.2017.8402612","url":null,"abstract":"The MIMO Enhanced Linear Short Synthetic Aperture Radar (MELISSA) is a GB-SAR system which consists of 12 pyramidal horn antennas placed in linear antenna array geometry in its transmitter block. This paper discusses the feasibility of replacing this transmitter block with a 2 x 6 planar coaxial cavity horn (choke) antenna array with an improved gain and return loss results. The simulation results obtained from Antenna Magus and MatLab Simulink show that the overall gain of the proposed antenna array is 10.65 dBi with appreciable return loss values at varied distances of the target placement.","PeriodicalId":396210,"journal":{"name":"2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123218860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design and analysis of a flexible multifractal cantor antenna","authors":"M. Shah, Sanjeev Gupta","doi":"10.1109/IAIM.2017.8402537","DOIUrl":"https://doi.org/10.1109/IAIM.2017.8402537","url":null,"abstract":"In this article multifractal cantor structure based multiband antenna is designed and analyzed. It operates at the frequencies 1.4 GHz, 5.35 GHz and 9.65 GHz. These frequencies are widely utilized in remote sensing applications. Here monopole structure is utilized to achieve wide bandwidth. Approximate relation between operating frequencies and geometrical dimensions of cantor structure is analyzed and an approximate design method is suggested.","PeriodicalId":396210,"journal":{"name":"2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM)","volume":"446 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125770258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}