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US 11,405,059 B2Granted
Mobile device front end architecture for antenna plexing for multiple frequency bands
AssigneeSkyworks Solutions, Inc.
InventorDavid Richard Pehlke
Life of this patent
Estimating the term…
Abstract
A switching circuit comprises a first filter, a second filter and a plurality of switches. The first filter is configured to filter a first frequency band, a second frequency band that is adjacent to the first frequency band and a gap band between the first frequency band and the second frequency band. The second filter is configured to filter the second frequency band. The plurality of switches is configured to route signals from an antenna through one of the first filter and second filter.
Claims21
A switching circuit for switching radio frequency signals, comprising:
- a first filter configured to concurrently filter first signals in a combination of frequency bands that include a first cellular frequency band, a wireless area network frequency band, and a second cellular frequency band to reduce insertion loss and frequency roll-off at edges of adjacent bands, the first cellular frequency band adjacent to the wireless area network frequency band, the second cellular frequency band adjacent to the wireless area network frequency band, a gap band between the first cellular frequency band and the wireless area network frequency band;
- a second filter configured to filter second signals in the wireless area network frequency band;
- and
- a plurality of switches configured to route radio frequency signals from an antenna through the first filter and the second filter for concurrent cellular and Wi-Fi operation.
1 more element
A front end module comprising:
- a switching circuit for concurrent cellular and Wi-Fi operation that includes a first filter configured to concurrently filter first signals in a combination of frequency bands that include a first cellular frequency band, a wireless area network frequency band, and a second cellular frequency band to reduce insertion loss and frequency roll-off at edges of adjacent bands, the first cellular frequency band adjacent to the wireless area network frequency band, the second cellular frequency band adjacent to the wireless network frequency band, a gap band between the first cellular frequency band and the wireless area network frequency band, a second filter configured to filter second signals in the wireless area network frequency band, and a first plurality of switches configured to route radio frequency signals from an antenna through the first and second filters;
- and
- an amplifier assembly configured to receive the radio frequency signals from the switching circuit and amplify the radio frequency signals.
A switching circuit comprising:
- for concurrent cellular and Wi-Fi operation,
- a first filter configured to concurrently filter first signals in a combination of frequency bands that include a first cellular frequency band, a wireless area network frequency band, a second cellular frequency band, and a third frequency band to reduce insertion loss and frequency roll-off at edges of adjacent bands, the first cellular frequency band adjacent to the wireless area network frequency band and the third frequency band, the second cellular frequency band that is adjacent to the wireless area network frequency band, a gap band between the first cellular frequency band and the wireless area network frequency band frequency band;
- a second filter configured to filter second signals in the wireless area network frequency band;
- a third filter configured to filter third signals in the third frequency band, a first portion of the first cellular frequency band and the second cellular frequency band;
- and
- a plurality of switches configured to route radio frequency signals from an antenna through (i) the second and third filters, or (ii) the first filter.
3 more elements
Dependencies are inferred from the claim text.