New PDF release: MIT RadLab {complete set} Vol 11 - Technique of Microwave

Technique

By C. Montgomery

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Extra resources for MIT RadLab {complete set} Vol 11 - Technique of Microwave Measurements

Example text

The smaller RG-5/U cable is often used to Such a connect to Sperry Klystrons and require an “SKL” fitting. connector, the UG-275/U connector, is shown in Fig. 1“8. Many other cables, both larger and smaller, and the connectors for them are available, as well as adapters from one cable to another and to rigid lines, T’s, and angle connectors. —UG-275/U connectorfor wave region, cables of higher characuse with RG-5/U cable to connectto teristic impedance are used; 72 ohms SperryKlystrontubes. is a common value.

In. line on the tube to some more standard line is therefore indicated. In Fig. 13 is shown an adapter to standard ~-in. 50-ohm coaxial line, The 2K29 puts out practically as recommended by the manufacturer. 1 were taken. 7] THE TYPE 2K28 REFLEX KLYSTRON 41 to obtain the output power listed in the table. The electronic-tuning range quoted for the 726C corresponds to the load adjusted for maximum output power, while for the 726A and B it was obtained with the tube working into a matched 70-ohm line.

For such purposes, it is helpful to have the output frequency quite sensitive to some electrode voltage and to have the signal frequency depend nearly linearly on this voltage. Absence of amplitude modulation in the process is not so important since f-m receivers commonly make use of amplitude limiters in any case. In addition to these matters of output power and modulation, there are a number of other fairly obvious criteria, such as the range of frequencies that the source may be tuned to generate, the ease of this tuning process, the number and difficulty of the adjustments that must be made for optimum operation, and the amount of mechanical skill required Further additions would begin to sound for constructing accessories.

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MIT RadLab {complete set} Vol 11 - Technique of Microwave Measurements by C. Montgomery


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