Dielectric resonator, dielectric resonator frequency adjusting method, and dielectric resonator integrated circuit
US7378925B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2004 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Aug 23, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/00014
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An oscillator comprising a dielectric resonator (DR) has a high controllability and reproducibility of coupling between the dielectric resonator (DR) and an oscillation circuit, and an integrated circuit is reduced in size. The dielectric resonator (DR) (1) is composed of a dielectric substrate (2), grounding conductive layers (3a, 3b) formed on both sides of the dielectric substrate (2), and via holes (4a) for electrical connection between the conductive layers. A coupling element (7a) composed of a slot (5a) provided in the central portion of the grounding conductive layer (3a) and a patch (6a) surrounded by the slot (5a) is coupled to the dielectric resonator (DR) (1). The patch (6a) is connected to a transmission line (13a) on an oscillation circuit (9) through a bump (8). The transmission line (13a) is connected to the ground through a termination resistor (15a). On the oscillation circuit MMIC (9), the transmission line (13a) is connected to the gate of a transistor FET (14) A capacitive transmission line (13a) for positive feedback is connected to the transistor FET (14). The output of the transistor FET (14) is connected to a transmission line (13c) for output through a mat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.