Oscillator using dielectric resonator
AssigneeMurata Manufacturing Co., Ltd.
InventorsToshio Nishikawa, Yoji Ito, Youhei Ishikawa, Sadahiro Tamura
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Abstract
A dielectric resonator is housed within an internal space of a metallic casing. An amplifier is disposed outside the space and an input and output circuits are connected to the amplifier. An output coupling window is formed in the casing at the position corresponding to the output circuit of the amplifier and an input coupling window is formed in the casing at the position corresponding to the input circuit of the amplifier. An electromagnetic wave leaking from the output circuit of the amplifier is coupled through the output coupling window to the dielectric resonator and the dielectric resonator is further coupled to the input circuit of the amplifier through the input coupling window.
Claims30
An oscillator using a dielectric resonator, comprising:
- a casing made of an electrically conductive material and having a wall defining a space therein;
- a dielectric resonator disposed within said space;
- amplifying means disposed outside said wall and including an input circuit and an output circuit;
- input coupling means associated with said input circuit for coupling said input circuit and said dielectric resonator through said wall;
- and
- output coupling means associated with said output circuit for coupling said output circuit and said dielectric resonator through said wall, said output coupling means comprising an output coupling window formed in said wall and positioned with respect to said output circuit at a location which permits propagation of a predetermined amount of an electromagnetic wave from said output circuit to said dielectric resonator.
Dependencies are inferred from the claim text.