FILTER AND DIELECTRIC RESONATOR THEREOF

WIPO Patent Application WO/2021/179758

A1

The present invention relates to a filter and a dielectric resonator thereof, the dielectric resonator comprising a dielectric block and a metal layer coating the external surface of the dielectric block. The dielectric resonator has a first surface and a second surface arranged to oppose each other, wherein a metalized blind hole is formed on the first surface for a PIN of a radio frequency connector to insert, and a recessed structure different from the metalized blind hole is also formed on the first surface. The forming of the recessed structure on the first surface of the dielectric resonator can have the effect of strengthening the coupling between the RF connector and the dielectric resonator, thereby achieving bandwidth regulation at input and output ends and changing time delay. When the dimension of the recessed structure is increased, the time delay at corresponding input and output ends increases. Therefore, while increasing the depth of the metalized blind hole, the dimension of the recessed structure can be adjusted to make the time delay to meet requirements. When the depth of the metalized blind hole increases, the insertion length of the PIN also increases, and thus the welding strength of the PIN is higher, such that the reliability of the above filter is significantly improved.

XIE YIFEI (CN)
DING HAI (CN)
LIN XIANTIAN (CN)

PCT/CN2020/141021

September 16, 2021

December 29, 2020

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COMBA TELECOM TECH GUANGZHOU LIMITED (CN)
COMBA RF TECH GUANGZHOU LTD (CN)

H01P7/10

CN110400993A	2019-11-01
CN107331930A	2017-11-07
CN111342187A	2020-06-26
CN109461995A	2019-03-12
CN203617409U	2014-05-28
US5406236A	1995-04-11
US5525945A	1996-06-11

LIFANG & PARTNERS (CN)

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