Title :
An Experimental Comparison Between Direct and Indirect PAM by a High-Efficiency Microwave Frequency Multiplier with Varactor Diodes (Correspondence)
fDate :
8/1/1970 12:00:00 AM
Abstract :
Two pulse amplitude modulation (PAM) methods by a high-efficiency frequency multiplier with varactor diodes are compared. Typical results achieved for an X-band to Q-band tripler prove that the direct PAM is better than the indirect one under the same conditions. The former acts as a pulse shaper (PS), and has an output rise time smaller than the rise time of the output voltage of the modulator chain.
Keywords :
Amplitude modulation; Delay lines; Diodes; Electromagnetic diffraction; Frequency measurement; Microwave frequencies; Pulse measurements; Pulse modulation; Reflection; Varactors;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1970.1127273
