Modulators inventions 01/08

20080024240 - Delta-sigma modulated fractional-n pll frequency synthesizer: A delta-sigma modulated fractional-N PLL frequency synthesizer is provided. The frequency synthesizer includes a phase frequency detector for receiving a reference signal with a reference frequency (Fref) and an overflow signal to output a phase difference signal by detecting a phase and frequency difference between the reference signal and the... Agent: Madson & Austin

20080012656 - Method and apparatus for automatic high power tube recovery: The invention consists, generally, of a method for automatically reducing power to an electron emitting cathode by sensing an operating condition of the electron emitting cathode, calculating a condition number based upon the operating condition, comparing the condition number to a threshold value, and reducing the power to the electron... Agent: Sirote & Permutt, P.C.

20080012657 - Traveling-wave tube with integrated ion trap power supply: A traveling-wave tube system and a method for protecting a cathode of a traveling-wave tube system. The system has an electron gun and a power supply that applies an electric potential between a cathode and an anode of the electron gun to generate a beam of electrons. The beam of... Agent: Proskauer Rose LLP