Frustum Shaped Conformal Antenna for Spinning Aerial Platform
A novel approach to design and develop frustum shaped conformal antenna for transmission of telemetry data from a missile like spinning aerial platform is described. The requirement necessitates for an omni directional radiation pattern in the roll plane. However, the criteria is not feasible to achieve by using a monopole or a dipole as the omni coverage due to these antennas are restricted only in yaw or azimuth plane of the aerial platform. A conformal antenna appropriately wrapped on to the surface provides potential solution and accordingly has been configured for meeting the requirements of a practical application. The antenna artwork has been designed to conform to the exterior geometry of the intended portion of conical surface and printed on a microwave substrate which is essentially thin and flexible. A corporate feed distribution scheme has been designed and tailored to match with the impedance of the microstrip radiator at multiple locations and also printed along with it making the frustum antenna very compact and of aerodynamic supportive form. The antenna produces required omni coverage in the plane normal to the roll axis. A step-wise method for the design and development of the frustum conformal antenna through simulation and experiment approach has been discussed.
Biswas, Diptiman; Selvanayaki, K.; Patel, Nilesh & Ramachandra, V. An airborne antenna system for broadside coverage with varying roll and pitch angles. In 1st Applied Electromagnetic Conference. IEEE – AEMC 2007.
doi: 10.1109/ AEMC.2007.4638021
Biswas, Diptiman; Selvanayaki, K.; Krishna, Prasad D.S. & Ramachandra, V. Effect of conical surface on conformal wrap around antenna radiation pattern. In 5th ATMS India-2012, pp.190-193.
Biswas, Diptiman & Ramachandra, V. A novel approach to design conformal frustum wrap around antenna. In 9th Inertnational Radar Symposium India IRSI-2013, pp. 190-193.
Biswas, Diptiman. Indigenous antennae technology on UAV perspective. DRDO Science Spectrum 2017, pp.1-14. ISSN 2348-5795
Munson, R.E. Conformal microstrip communication antenna. In IEEE, Military Communications Conference - Communications-Computers: Teamed for the 90’s, 1986. MILCOM, 1986, pp. 23.3.1-23.3.4.
Munson, R.E. Conformal microstrip antennas and microstrip phased arrays. IEEE Trans. Antennas Propagat., 1974, 22(1), 74-78.
Dubost, G. Contribution to the understanding of pattern coverage of an open-circuited microstrip wrap around antenna acting at half wave resonance. Electronic Letters, 1983, 19(14), 505-506.
Ali, Sami M.; Habashy, T.M.; Kiang, J.-F. & Kong, J.A. Resonance in cylindrical - rectangular and wraparound micro strip structures. IEEE Trans. MTT, 1989, 37(11), 1773-1783.
Habashy, Tarek M.; Ali, S.M. & Kong, J.A. Input impedance and radiation pattern of cylindrical-rectangular and wraparound microstrip antennas. IEEE Trans. Antennas Propagat., 1990, 38(5), 722-731.
Meeks, D.N. & Wahid, P.F. Input impedance of a wrap around antenna on a conical surface. In IEEE Antennas and Propagation Society International Symposium, 1996, pp. 676 -679.
where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India