This paper describes the design and performance of linear power amplifiers utilizing a newly developed silicon bipolar linear power transistor. A 4 GHz single-stage amplifier has been built with an internally matched ...
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This paper describes the design and performance of linear power amplifiers utilizing a newly developed silicon bipolar linear power transistor. A 4 GHz single-stage amplifier has been built with an internally matched packaged transistor which yield 500 mW of linear power over a 300 MHz band. An octave band amplifier stage was built using transistor chips, techniques, and 3 dB couplers with yielded more than 1 watt linear power over 2 to 4 GHz. These amplifiers are especially suited for use in communication systems, radar and electronic countermeasure systems in the 2-5 GHz band.
The design concept and circuit optimization of planar balanced millimeter-wave mixers are described. The mixers are constructed using slotline and coplanar stripline together with GaAs beam-lead Schottky-barrier diode...
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The design concept and circuit optimization of planar balanced millimeter-wave mixers are described. The mixers are constructed using slotline and coplanar stripline together with GaAs beam-lead Schottky-barrier diodes. External RF and LO input ports are in waveguide. The circuit problems associated with the diode matching networks and the diplexer for separating the LO and IF signals are discussed. Experimental results for a mixer from 40 to 60 GHz are presented. This mixer has less than 7. 5 dB conversion loss up to 57 GHz, a large IF bandwidth 910 GHz0, good RF VSWR 9 less than 2:1), and good LO-to-RF isolation 9 less than 22 dB0.
The design results of a 500 watt amplifier which is used in a 1.2 KW solid-state, L-Band space qualified transmitter are described. A discussion of key design techniques which ensure the high reliability of this ampli...
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The design results of a 500 watt amplifier which is used in a 1.2 KW solid-state, L-Band space qualified transmitter are described. A discussion of key design techniques which ensure the high reliability of this amplifier is presented along with test data. The power combining and special techniques for utilization of three of these amplifiers in a 1.2 KW synthetic aperture space-borne RADAR are also described.
The Chief of Naval Material established the Tactical Electromagnetic systems Study (TESS) Action Council to evaluate a comprehensive report of electromagnetic systems problems within the Navy relating to the areas of ...
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The Chief of Naval Material established the Tactical Electromagnetic systems Study (TESS) Action Council to evaluate a comprehensive report of electromagnetic systems problems within the Navy relating to the areas of Electromagnetic Compatibility (EMC), Electromagnetic Pulse (EM P), Electrom agnetic Vulnerability (EMV), electronic Countermeasures (ECM) /electronic Counter-Countermeasures (ECCM), Electromagnetic Power and, Electromagnetic Safety. The TESS Action Council will formulate a plan of action and milestones which will address ways to improve the design and procurement of Navy electromagnetic systems and equipments, and will develop a plan for reseach and development to meet future needs.
This paper describes a new approach to the design of combinational logic using large-scale-integrated (LSI) circuit technology. A simple »prototype» logic function of n binary variables is imbedded within an...
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The realization of a variety of counters with only one threshold gate per state variable and a minimum number of state variables is treated. Closed-form expressions are derived for the weights and thresholds for arbit...
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Past efforts toward automation of Electromagnetic Interference (EMI) measurements have been concentrated on mechanical and/or electronic scanning techniques which yield analog frequency and signal amplitude informat i...
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Past efforts toward automation of Electromagnetic Interference (EMI) measurements have been concentrated on mechanical and/or electronic scanning techniques which yield analog frequency and signal amplitude informat ion, and are therefore somewhat lacking in accuracy and resolution. Effort at LTV Electrosystems, however , has been concentrated on the application of incrementally tuned receiver techniques to EMI measurement problems and has resulted in an equipment capable of automatic acquisition and measurement of unknown signals while furnishing precise digital amplitude and frequency data . This paper presents the design features and applications of an instrument incorporating these techniques. This receiver was developed to satisfy special customer requirements for use in the 10 kHz t o 32 MHz frequency band.
A method for demonstrating the effects of hazards in sequential relay circuits is given. The device used in the demonstration, containing relays with mirrors glued to their armatures, a light source, a focusing lens, ...
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This paper describes the presentations that were given to engineers to provide them with techniques to minimize electronic interference. The special electro-interference problems associated with electronic equipment f...
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This paper describes the presentations that were given to engineers to provide them with techniques to minimize electronic interference. The special electro-interference problems associated with electronic equipment for missiles and military systems were given prime attention. Stress was placed on the basic theory of electrointerference which the design engineer could apply in his daily work. In such a manner, each engineer solves the electro-interference problems related to his circuit during the design o f that circuit. This approach i s even more important if the design includes microminiature circuits, since shielding and ground solutions must be an integral part of the design. Adding large, heavy filters and transformers to solve an interference problem defeats the basic idea of microminiature circuits. However, since the technique of microminiature circuits makes available more circuitry per square inch, the opportunity is presented to utilize circuit techniques to solve many interference coupling problems.
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