Stellartron

About Us

Stellartron is a Florida company located in Panama City Beach, Florida.

Our Founder

Stellartron was founded by Gregory P. Junker, PhD.

Dr. Junker has industrial experience with major computer and aerospace corporations located in the Midwest and West Coast.

He provides expertise in the areas of diagnostic software, computational electromagnetics, antenna design and testing as well as antenna sub-system modeling and verification.

He is a specialist in frequency independent antennas, dielectric antennas, microwave and millimeter wave reflector feeds and microwave relay antennas.

Stellartron Helps Programs Succeed

Stellartron is acquainted with the timeline associated with antenna system development.

From the initial design phase to delivering a finished product, programs may experience staff turnover and expertise loss which can adversely impact cost and schedule.

Stellartron can help you fill that gap in any project with its consulting and engineering services.

Publications

Select Papers co-authored by Stellartron Staff

1) Wideband, Circular Polarized Sum and Difference Pattern Coaxial Antenna, IEEE Transactions on Antennas and Propagation (IF4.388), Pub Date : 2021-03-01, DOI: 10.1109/tap.2021.3061591; Philip W. C. Hon, Gregory P. Krishmar-Junker, Arun Bhattacharyya

2) Input impedance of dielectric resonator antennas excited by a coaxial probe, IEEE Transactions on Antennas and Propagation (IF 4.388) Pub Date: 1994-07-01 DOI:10.1109/8.299598, G.P. Junker, A.A. Kishk, A.W. Glisson

3) Multiport network description and radiation characteristics of coupled dielectric resonator antennas: IEEE Transactions on Antennas and Propagation (IF 4.388) Pub Date: 1998-03-01 DOI:10.1109/8.662662, G.P. Junker, A.A. Kishk, A.W. Glisson

5) Bandwidth Enhancement for Split Cylindrical Dielectric Resonator Antennas – Abstract: Journal of Electromagnetic Waves and Applications (IF 1.335) Pub Date: 2001-01-01, OI:10.1163/156939301x01002, A.A. Kishk, A.W. Glisson, G.P. Junker

6) Effect of an air gap around the coaxial probe exciting a cylindrical dielectric resonator antenna: Electronics Letters (IF 1.314) Pub Date: 1994-02-03 DOI:10.1049/el:19940191, G.P. Junker, A.A. Kishk, A.W. Glisson, D. Kajfez

7) Effect of air gap on cylindrical dielectric resonator antenna operating in TM01 mode: Electronics Letters (IF 1.314) Pub Date: 1994-01-20 DOI:10.1049/el:19940114, G.P. Junker, A.A. Kishk, D. Kajfez, A.W. Glisson

8) Effect of aperture filling on slot-coupled dielectric resonator antennas operating in HEM11 mode: Electronics Letters (IF 1.314) Pub Date: 1995-05-11 DOI:10.1049/el:19950548, G.P. Junker, D. Kajfez, A.W. Glisson, A.A. Kishk

9) Effect of fabrication imperfections for ground-plane-backed dielectric-resonator antennas: IEEE Antennas and Propagation Magazine (IF 2.593) Pub Date: 1995-01-01 DOI:10.1109/74.370580, G.P. Junker, A.A. Kishk, A.W. Glisson, D. Kajfez

10) Input Impedance of Microstrip-Slot Coupled Dielectric Resonator Antennas Mounted on Thin Dielectric Layers, International Journal of Microwave and Millimeter-Wave Computer-Aided Engineering, Vol. 6, No. 3, 174-182 (1996), Gregory P. Junker, Ahmed A. Kishk, Darko Kajfez, Allen W. Glisson, and Jing Guo

12) Matched Transmission-Line Source Model, Microwave and Optical Technology Letters / Vol. 14, No. 2, February 5 1997, Gregory P. Junker, Allen W. Glisson, and Ahmed A. Kishk,

13) An Improved Finite-Difference Procedure for Electromagnetic Eigenvalue Problems, MICROWAVE AND OPTICAL TECHNOLOGY LETTERS / Vol. 18, No. 2, June 5 1998, Gregory P. Junker and Richard K. Gordon

14) Genetic algorithm optimization of antenna arrays with variable interelement spacings, IEEE Antennas and Propagation Society, 21 June 1998, G. P. Junker, S. Kuo, C.H. Chen

15) MoM solution of wire radiators coupled to dielectric bodies of revolution, Engineering Proceedings of IEEE Antennas and Propagation, 28 June 1993, G. P. Junker, A. Kishk, A. Glisson

16) Input impedance of aperture-coupled dielectric resonator antennas,: IEEE Transactions on Antennas and Propagation, Vol 44, Issue: 5, May 1996, G. P. Junker, A. Kishk, A. Glisson

Patents

Inventions co-developed by Stellartron Staff

1) Compact wide band, flared horn antenna with launchers for generating circular polarized sum and difference patterns: Patent number: 9431715, Inventors: Arun K. Bhattacharyya, Gregory P. Krishmar-Junker, Philip W. Hon, Shih-en Shih, David I. Stones, Dah-Weih Duan, Loc Chau

2) Excitation method of coaxial horn for wide bandwidth and circular polarization: Patent number: 9425511, Inventors: Gregory P. Krishmar-Junker, Philip W. Hon, Arun K. Bhattacharyya

3) Symmetric orthomode coupler for cellular application: Patent number: 6566976, Inventors: Gregory P. Krishmar-Junker, Vrage Minassian

4) DUAL Frequency Single Polarization Feed Network: Publication number 20020171597, Inventors: Gregory P. Krishmar-Junker, Charles W. Chandler, Makkalon Em

5) Dual frequency single polarization feed network: Patent number: 6473053, Inventors: Gregory P. Krishmar-Junker, Charles W. Chandler, Makkalon Em

6) Wideband TE11 mode coaxial turnstile junction: Patent number 6657516, Inventors: Gregory P. Junker, Vrage Minassian

7) Waveguide coupler: Patent number: 6313714, Inventors: Gregory P. Junker, Vrage Minassian

8) Compact offset gregorian antenna system for providing adjacent, high gain, antenna beams: Patent number: 6236375, Inventors: Charles W. Chandler, Gregory P. Junker, Ann L. Peebles

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