Anode To Grid Coupled Or Connected Resonant Circuit Patents (Class 331/170)
  • Patent number: 9360458
    Abstract: The rotary transformer 5 includes a plate-shaped stator 51 having a coil arranged on one surface thereof, and a plate-shaped rotator 52 having a coil arranged on one surface thereof, in which the respective coil-arranged surfaces are disposed to face with each other so that signal transmission in a frequency range of 1 to 10 MHz is performed between the coils. The stator includes a substrate 512 on which a plurality of one-turn coils are formed into a concentric shape, and a supporting member 513. The rotator includes a substrate 522 on which one-turn coils 521 of same number are formed into a concentric shape, and a supporting member 523. Air or a material M which is an insulator and has a relative magnetic permeability substantially equal to 1 is lying between the substrate 512 and the supporting member 513, and between the substrate 522 and the supporting member 523.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: June 7, 2016
    Inventors: Shoji Shibata, Yoichi Fujikake, Kunihiko Hatabara, Michiaki Ishihara, Sohken Mitsui
  • Publication number: 20040178859
    Abstract: A technique is provided for achieving efficient modulation compensation of a &Sgr;&Dgr; fractional PLL. The parameters of the PLL TF are the gain, Kpll, of the PLL and the time constants associated with the loop filter. A careful design of the PLL allows setting the poles and zeros of the PLL TF to fixed values, independent of process and temperature. The unknown parameters of the system are then reduced to one: the PLL gain, K which is the product of the Voltage Controlled Oscillator (VCO), Phase Detector (PD) and divider gains. One unknown variable can be then determined via a single equation, that can be derived at a single frequency. The measurement of a low frequency modulated single tone, for example, is sufficient to characterize the entire PLL TF.
    Type: Application
    Filed: March 13, 2003
    Publication date: September 16, 2004
    Inventors: Paul H. Fontaine, Abdellatif Bellaouar, Bertan Bakkaloglu
  • Publication number: 20020044024
    Abstract: In an SSB transmitter, a problem such that the central frequency of a BPF for extracting one of sideband signals from the modulated signals obtained by modulating a carrier frequency signal by an input sound signal is changed by temperatures, causing a drop in suppression ration and a deterioration in sound is solved.
    Type: Application
    Filed: October 4, 2001
    Publication date: April 18, 2002
    Inventor: Yoshiteru Hashimoto
  • Patent number: 5602515
    Abstract: In order to improve the efficiency of a self-starting high-frequency generator, where for self-starting power is fed back from the anode circuit to the control grid of the grid-controlled electron tube used as amplifier element, the following measures are provided. An additional oscillating circuit (L.sub.A3, C.sub.A3) which is tuned to a multiple of the operating frequency (f.sub.1) is arranged in the anode circuit. An oscillating circuit (L.sub.G31, L.sub.G32, C.sub.G3) tuned to a multiple of the operating frequency (f.sub.1) is likewise arranged in the control-grid circuit. Components (L.sub.G31) belonging to the feedback circuit are at the same time components of the oscillating circuit arranged in the control-grid circuit.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: February 11, 1997
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Held, Jochen Stahl
  • Patent number: 4978929
    Abstract: An oscillator circuit for supplying a gas discharge path. A self-oscillating oscillator is controlled by pulses whose width, amplitude, and/or frequency are regulated as necessary to stabilize the oscillator output power, energy, and/or voltage.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: December 18, 1990
    Assignee: Herfurth GmbH
    Inventor: Karl-Heinz Knobbe