Abstract
The performance of magnetostatic surface wave delay line oscillators (MSWDLO) is presented. The oscillator consisted of a narrow band MSSW delay line in a feedback loop around a solid state amplifier. Power is coupled out by a directional coupler. A frequency range of 0.5-24 GHz was covered using highly doped, lightly doped and pure YIG films epitaxially grown on GGG substrates. The MSWDLO exhibited essentially linear tuning characteristics with output power greater than +5 dBm. Temperature cycling tests showed about 3 MHz/ °C variation in oscilation frequency over the 25-105 °C range. Phase noise measurements at different frequencies showed the single side band phase noise was typically less than -100 dBc at 10 kHz offset.
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