Antenna filtering arrangement for a dual mode radio communication device
AssigneeLK-Products Oy
InventorsPanu Hagström, Seppo Yrjölä
Life of this patent
Estimating the term…
Abstract
A dual mode radio apparatus has an integrated filtering part (51) which includes an antenna port (51a) for connection to an antenna (21), at least one port (51b, 51c, 51d) for connection to each of the system-specific radio-frequency parts (54, 55) of the dual mode radio apparatus and filtering means for directing the propagation of signals between ports on the basis of the signal frequency. The integrated filtering part replaces earlier separate filters and their impedance matching circuits as well as some of the required radio-frequency switches.
Claims6
An antenna filtering arrangement for a dual mode radio apparatus comprising:
- a first radio-frequency device for processing radio-frequency signals of a first radio communication system, said first radio-frequency device including a transmitter chain and a receiver chain;
- a second radio-frequency device in parallel with said first radio-frequency device, said second radio-frequency device including a transmitter chain and a receiver chain, said second radio-frequency device processing radio-frequency signals of a second radio communication system;
- an antenna for transferring radio-frequency signals of said first and second radio communication systems;
- and
- an integrated filtering device connecting said first and second radio-frequency devices together, said integrated filtering device comprising:
- an antenna port connected to said antenna;
- at least one port connected to said first radio-frequency device;
- at least one port connected to said second radio-frequency device;
- and
- filtering means to direct propagation of signals between said ports based on signal frequency.
A radio communication device for transmission and reception of radio-frequency signals of at least two radio communication systems, comprising:
- a first radio-frequency device for processing radio-frequency signals of a first radio communication system, said first radio-frequency device including a transmitter chain and a receiver chain;
- a second radio-frequency device in parallel with said first radio-frequency device, said second radio-frequency device including a transmitter chain and a receiver chain, said second radio-frequency device processing radio-frequency signals of a second radio communication system;
- an antenna for transferring radio-frequency signals of said first and second radio communication systems;
- and
- an integrated filtering device connecting said first and second radio-frequency devices together, said integrated filtering device comprising:
- an antenna port connected to said antenna;
- at least one port connected to said first radio-frequency device;
- at least one port connected to said second radio-frequency device;
- and
- filtering means to direct propagation of signals between said ports based on signal frequency.
Dependencies are inferred from the claim text.