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US 5,805,026 AGranted
Microstripline resonator useable in a voltage controlled oscillator and method for making same
AssigneeMurata Manufacturing Co., Ltd.
InventorsYuji Kuroda, Yoshiaki Tanbo
Life of this patent
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Abstract
A microstripline resonator in which a desirable resonant frequency can be adjusted with less deterioration in Q and less production process steps is characterized in that a hollowed-out portion is formed in an electrode portion provided on an insulating substrate base. A width-narrowed portion is provided between the side edge of the electrode portion and the hollowed-out portion for adjusting the resonant frequency of the microstripline resonator.
Claims23
A microstripline resonator comprising:
- an insulating substrate base;
- an electrode portion formed as a strip having an outer perimeter provided on said insulating substrate base;
- a hollowed-out portion provided within said perimeter of said electrode portion;
- and
- a width-narrowed portion of said electrode portion for adjusting a resonant frequency of the microstripline resonator by changing a width of the resonator, said width-narrowed portion being provided between a side edge of said electrode portion and said hollowed-out portion;
- wherein at least one cut is provided in said width-narrowed portion to adjust said resonant frequency.
3 more elements
A voltage-controlled oscillator comprising:
- at least one switch;
- at least one diode;
- and
- a microstripline resonator electrically connected with said at least one transistor and said at least one diode, said at least one transistor, said at least one diode and said microstripline resonator being formed on at least one side of an insulating substrate base;
- and
- a grounding pattern formed on at least a second side of said insulating substrate base, said second side being opposite said first side, said microstripline resonator further comprising:
- an electrode portion formed as a strip having an outer perimeter provided on said insulating substrate base;
- a hollowed-out portion provided within said perimeter of said electrode portion;
- and
- a width-narrowed portion of said electrode portion for adjusting a resonant frequency of the microstripline resonator by changing a width of the resonator, said width-narrowed portion being provided between a side edge of said electrode portion and said hollowed-out portion;
- wherein at least one cut is provided in said width-narrowed portion to adjust said resonant frequency.
8 more elements
A method for producing a microstripline resonator comprising the steps of:
- forming an electrode portion as a strip having an outer perimeter on an insulating substrate base;
- forming a hollowed-out portion within said perimeter of said electrode portion;
- forming a width-narrowed portion of said electrode portion for adjusting a resonant frequency of the microstripline resonator by changing a width of the resonator, said width-narrowed portion being provided between a side edge of said electrode portion and said hollowed-out portion;
- and
- adjusting a resonant frequency of the microstripline resonator by cutting at least a portion of the width-narrowed portion.
2 more elements
Dependencies are inferred from the claim text.