Abstract: A tunnel diode oscillating at 804 MHz is shown to produce an 8 dB self-pumped parametric amplification of an input signal at 7.24 GHz. No external pumping power is required.

LONDON, UNITED KINGDOM / ACCESS Newswire / April 15, 2025 / Guardian Metal Resources plc (LON:GMET), a strategic development and mineral exploration company focused on tungsten in Nevada, USA, is ...