Mark F. Kirshner

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L-3 EDD has developed a W-Band TWT with 100 W RF power over 4 GHz of bandwidth around 94 GHz suitable for MPM integration. The TWT employs an aperture grid modulated electron gun with mod-anode current control, a serpentine waveguide interaction circuit, and a single-stage depressed collector. Two TWTs have been built and tested to over 100 W pulsed output(More)
L-3 Communications Electron Devices Division (EDD) is developing a 9.3 GHz, 5 MW peak, 20 kW average power klystron suitable for use in linear accelerator and radar applications. Generating RF power of this magnitude within the confines of a relatively small sized X-band RF circuit is a significant challenge. A discussion of the design methodology and(More)
L-3 Electron Devices Division (EDD) is developing a wideband IOT (WBIOT) with a 1 dB bandwidth greater than ten percent. High efficiency, good linearity, and compact size are provided by emission gated modulation of the electron beam directly at the cathode surface. Through use of a high impedance input circuit and an extended interaction output circuit,(More)
L-3 EDD has developed a pulsed mode WBand microwave power module (MPM) providing 100W RF power over 92 to 96 GHz. The MPM includes a serpentine waveguide PPM-focused TWT and a modular electronic power conditioner (EPC). A breadboard power supply was previously built and successfully tested with a W-Band TWT. The final power conditioner design is completing(More)
L-3 Electron Devices Division (EDD) has developed a compact CW E-band microwave power module (MPM) to cover the 81 to 86 GHz band for communications applications. The power amplifier in the MPM is a periodic permanent magnet focused serpentine waveguide TWT, capable of over 200 W and 50% efficiency. In combination with a predistortion linearizer from LTI,(More)
L-3 Communications, Electron Devices Division (EDD) has developed an inductive output tube (IOT) with large instantaneous bandwidth for radar and communications applications. As in conventional IOTs, this wideband IOT (WBIOT) provides high efficiency, good linearity, and compact size through emission-gated modulation of the electron beam at the cathode(More)
The majority of medical and industrial linear accelerators (LINACs) in use today operate at S-band. To reduce size and weight, these systems are gradually migrating toward X-band. The new LINACs will require suitable RF components to power them. In anticipation of this market, L-3 Communications Electron Devices Division (EDD) has recently developed a suite(More)
Modeling of emission-gated electron guns used on inductive output tubes (IOTs) will be presented. The simulations are performed with the time-domain module of the NRL / SAIC electron gun and collector code MICHELLE, with RF electric and magnetic fields imported from the HFSS electromagnetic solver.
L-3 Communications, Electron Devices Division (EDD) has developed an inductive output tube (IOT) with large instantaneous bandwidth for radar and communications applications. As in conventional IOTs, this wideband IOT (WBIOT) provides high efficiency, good linearity, and compact size through emission-gated modulation of the electron beam at the cathode(More)