VOLTAGE CONTROLLED OSCILLATOR USING VARACTOR-LOADED SPLIT-RING RESONATOR

• Main Authors: SEO, DONG WOOK, BAE, KY UNG, LIM, SANG HO, LIM, HO, MYUNG, NOH HOON, OH, YOUNG CHUL
• Format: Patent
• Language: English
• Published: 15.07.2009
• Subjects: AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES; BASIC ELECTRIC ELEMENTS; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; GENERATION OF NOISE BY SUCH CIRCUITS; GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; WAVEGUIDES

A voltage controlled oscillator using a VLSRR(Varactor-Loaded Split-Ring Resonator) is provided to obtain a very thin thickness by etching a metal on a substrate. A split ring resonator(101) is comprised of an inner ring and an outer ring. A microstrip transmission line(111) is separated from the split ring resonator with a predetermined interval. Both ends of a varactor diode(102) are connected to the inner ring and the outer ring of the split ring resonator. An amplifier is connected on the microstrip line and generates the oscillation signal. The oscillation frequency of the amplifier is controlled according to both ends of the varactor diode. In the varactor diode, one end connected to the inner ring of the spit ring resonator is grounded. The other end connected to the outer ring is connected to the power supply unit.