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Publications for Jon C. Freeman
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| Refereed |
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| “TWT Theory Revisited,” International J. of Electronics, 67, 1989, pp 907-930. Development of a set of self-consistent equations for the coupling between drifting electrons and a slow circuit wave. Derivation of the partial differential equation for the exchange of energy between beam and circuit. |
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| “On the Conservation Expressions in Dispersive, Lossy Media and their Relationships to Circuit Theory,” International J. of Electronics, 63, 1987, pp 297-306. Starting from Maxwell’s equations develops a conservation equation for lossy, dispersive media. This is a generalization of the standard Poynting relation for linear media. A theorem on the computation of energy storage in linear circuits is developed. |
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| “GaAs Travelling Wave Amplifier,” (with C. Hui), International J. of Electronics, 62, 1987, pp 9-25. Complete analysis and design strategy for a solid state traveling wave amplifier. Starts with Maxwell’s equations and the hydrodynamic equation for drifting carriers, and derives the conditions for growing wave instability. |
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| “Transient Behavior of Gunn Domains and Associated Equivalent Circuits,” (with C. P. Jethwa), IEEE Transactions on Electron Devices, ED-24, 1977, pp 1346-1350. Development of equations and associated equivalent circuit for a GUNN domain during transient conditions. |
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| “Interactions Between Slow Circuit Waves and Drifting Carriers in InSb, and Ge at 4.2 K,” (with V. L. Newhouse and R. L. Gunshor), Applied Phys. Letters, June 1973. Experimental results showing the interaction between drifting carriers in semiconductors and slow electromagnetic waves. |
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| “Capacitively Coupled Meanderline for Solid-State Traveling Wave Amplification,” IEEE Transactions on Electron Devices, ED-17, 1970, pp 383-384, (Correspondence). Derivation of the dispersion equation for a meanderline with capacitors at alternating ends. Excellent agreement between theory and measurements. |
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| NASA |
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| “An Analytical and Experimental Study of Injection-Locked Two-Port Oscillator,” (with A. N. Downey). NASA TM #100199, 1987. Derivation of the injection –locking properties of two-port oscillators. Experimental results verify theory. |
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| “Self-Consistent Inclusion of Space-Charge in the Traveling Wave Tube,” NASA TM# 89928, 1987. |
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| “Introduction to Forward-Error-Correcting Coding,” NASA RP-1367, 1996. |
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| “Technical Characteristics of a Novel Helical-Groove Traveling-Wave Tube Structure,” (with T. Wallet, K. Vaden, and H. Qureshi), NASA # 207414, 1998. |
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| “Preliminary Study of Electron Emission for Use in the PIC Portion of MAFIA, NASA TM#210890, 2001.
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| “Basic Equations for the Modeling of Gallium Nitride (GaN) High Electron Mobility Transistors (HEMTs),” NASA TM# 211983, 2003. |
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