US Patent Application 18028715. FILTER UNIT, ANTENNA FILTER UNIT AND RADIO UNIT simplified abstract

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FILTER UNIT, ANTENNA FILTER UNIT AND RADIO UNIT

Organization Name

Telefonaktiebolaget LM Ericsson (publ)


Inventor(s)

Jin Pu of Beijing (CN)

Junming Li of Beijing (CN)

Xueyuan Zhang of Beijing (CN)

FILTER UNIT, ANTENNA FILTER UNIT AND RADIO UNIT - A simplified explanation of the abstract

This abstract first appeared for US patent application 18028715 titled 'FILTER UNIT, ANTENNA FILTER UNIT AND RADIO UNIT

Simplified Explanation

The present disclosure is about a filter unit that includes a cavity filter with a hollow main body. The main body has a closed cavity for housing resonance elements. The filter unit is made by joining a filter chassis part and a filter cover part. The outer-side surface of either the filter chassis part or the filter cover part is metalized to form a metal layer that acts as an electromagnetic compatibility (EMC) cover. This metal layer blocks electromagnetic interference from affecting a radio board that is electrically coupled with the cavity filter.

  • The filter unit has a cavity filter with a closed cavity for resonance elements.
  • The filter unit is made by joining a filter chassis part and a filter cover part.
  • The outer-side surface of the filter chassis part or the filter cover part is metalized.
  • The metal layer acts as an EMC cover to block electromagnetic interference.
  • The EMC cover protects the radio board from electromagnetic interference.
  • The filter unit can be used in an antenna filter unit.
  • The antenna filter unit includes the filter unit and a radio unit.
  • The radio unit can include either the filter unit or the antenna filter unit.


Original Abstract Submitted

The present disclosure relates to a filter unit, including: a cavity filter including a hollow main body, with an inner-side surface of the main body defining a closed cavity for housing resonance elements, the main body is formed by joining a filter chassis part and a filter cover part covering the filter chassis part, wherein an outer-side surface of the filter chassis part or the filter cover part facing a radio board that is to be electrically coupled with the cavity filter is metalized in such a manner that a metal layer formed thereby is configured as an electromagnetic compatibility (EMC) cover for blocking the radio board from electromagnetic interference. Also, the present disclosure relates to an antenna filter unit including the above-said filter unit and a radio unit including the above-said filter unit or the antenna filter unit.

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