Front-End Circuit
OwnerPasi Tikkainventor
Life of this patent
Estimating the term…
Abstract
A front-end circuit for a mobile radio includes a first Frequency Division Duplexing (FDD) transmission path for a first FDD mobile radio system, where the first FDD transmission path includes a transmission amplifier and a duplexer that includes a transmission filter element; a first Time Division Duplexing (TDD) transmission path for a first TDD mobile radio system, where the first TDD transmission path includes a transmission amplifier; an antenna connection configured for connecting to the duplexer or to the first TDD transmission path; at least one transmission filter; and a switch configuration to connect the at least one transmission filter to the first FDD transmission path or to the first TDD transmission path. The first TDD mobile radio system and the first FDD mobile radio system use a same first frequency band.
Claims14
A front-end circuit for a mobile radio, the front-end circuit comprising:
- a first Frequency Division Duplexing (FDD) transmission path for a first FDD mobile radio system, the first FDD transmission path comprising a transmission amplifier and a duplexer comprising a transmission filter element;
- a first Time Division Duplexing (TDD) transmission path for a first TDD mobile radio system, the first TDD transmission path comprising a transmission amplifier;
- an antenna connection configured for connecting to the duplexer or to the first TDD transmission path;
- at least one transmission filter;
- and
- a switch configuration to connect the at least one transmission filter to the first FDD transmission path or to the first TDD transmission path;
- wherein the first TDD mobile radio system and the first FDD mobile radio system use a same first frequency band.
Dependencies are inferred from the claim text.