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US 12,726,281 B2Granted
In-device characterization of antenna coupling
AssigneeQUALCOMM Incorporated
InventorsErwin Spits, Francesco Gatta, Adrianus Van Bezooijen, Leon Metreaud, Hakan Inanoglu
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Abstract
A wireless communication device is provided with an in-device capability of characterizing the coupling between a pair of antennas. The wireless communication device determines the coupling through an operating gain measurement and through calibration gain measurements obtained through test ports.
Claims13
An apparatus for wireless communication, comprising:
- a plurality of antennas including a first antenna and a second antenna;
- a first antenna tuner coupled to the first antenna;
- a second antenna tuner coupled to the second antenna;
- a transmitter;
- a receiver;
- an antenna switch array having a first configuration in which the transmitter is coupled through the antenna switch array to drive the first antenna through the first antenna tuner and in which the second antenna tuner is coupled to a receiver node and having a second configuration in which the transmitter is coupled through the antenna switch array to drive the second antenna through the second antenna tuner and in which the receiver node is coupled to the first antenna tuner;
- a first switch coupled between the receiver node and a receive path in the receiver;
- and
- a second switch coupled between the receiver node and a first terminal of a matched load having a second terminal coupled to ground, the second switch configured to selectively couple the receiver node to the matched load.
6 more elements
An apparatus for wireless communication, comprising:
- a plurality of antennas including a first antenna and a second antenna;
- a first antenna tuner coupled to the first antenna;
- a second antenna tuner coupled to the second antenna;
- a transmitter;
- a receiver;
- an antenna switch array having a first configuration in which the transmitter is coupled through the antenna switch array to drive the first antenna through the first antenna tuner and in which the second antenna tuner is coupled to a receiver node and having a second configuration in which the transmitter is coupled through the antenna switch array to drive the second antenna through the second antenna tuner and in which the receiver node is coupled to the first antenna tuner;
- a first switch coupled between the receiver node and a receive path in the receiver;
- a second switch coupled between the receiver node and a first terminal of a matched load having a second terminal coupled to ground;
- and
- a controller configured to adjust the first antenna tuner to a load value that matches an impedance of the first antenna tuner to an impedance of the transmitter.
7 more elements
Dependencies are inferred from the claim text.