CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is a National Phase Entry of PCT International Application No. PCT/KR2019/001319, which was filed on Jan. 31, 2019, and claims priority to Korean Patent Application No. 10-2018-0011902, which was filed on Jan. 31, 2018, the contents of which are incorporated herein by reference.

TECHNICAL FIELD

Embodiments disclosed in this specification relate to an apparatus and a method for determining a reflection coefficient for an antenna.

BACKGROUND ART

In a wireless communication network, an electronic device may measure a reflection coefficient for an antenna to determine whether an antenna is abnormal. The electronic device may improve the performance of the antenna by adjusting the impedance of the antenna depending on the reflection coefficient. In addition to the reflection coefficient, the electronic device may determine whether an antenna is abnormal, through a return loss (RL) or a voltage standing wave ratio (VSWR).

DISCLOSURE

Technical Problem

To identify reflection coefficient, RL, or VSWR, the electronic device may obtain at least part of a signal delivered to an antenna and at least part of a signal reflected from an antenna. The signal delivered to the antenna may be referred to as a “forward signal”, and the signal reflected from the antenna may be referred to as a “reverse signal”. The electronic device may include a bidirectional coupler to obtain at least part of the forward signal and at least part of the reverse signal. The bidirectional coupler may include two signal lines to separately obtain at least part of the forward signal and at least part of the reverse signal.

In various embodiments of the disclosure, the electronic device may measure the reflection coefficient for the antenna without using the bidirectional coupler.

Technical Solution

According to an embodiment disclosed in this specification, an electronic device may include an antenna, a communication module including a transceiver, and a control circuit. The control circuit may be configured to radiate a first signal generated from the transceiver through the antenna, to obtain at least part of a second signal obtained by combining a forward signal delivered from the communication module to the antenna and a reverse signal reflected from the antenna, and to determine a reflection coefficient for the antenna based on at least part of the first signal and at least part of the second signal.

According to an embodiment disclosed in this specification, a method of an electronic device may include radiating a first signal generated from a transceiver, through an antenna, obtaining at least part of a second signal obtained by combining a forward signal delivered to the antenna and a reverse signal reflected from the antenna, and determining a reflection coefficient for the antenna based on at least part of the first signal and at least part of the second signal.

According to an embodiment disclosed in this specification, an electronic device may include an antenna, a communication module including a transceiver, and a control circuit. The control circuit may be configured to radiate a first signal generated from the transceiver through the antenna, to obtain at least part of one signal among a forward signal delivered from the communication module to the antenna and a reverse signal reflected from the antenna, and to determine a reflection coefficient for the antenna based on at least part of the forward signal and the reverse signal and at least part of the first signal.

Advantageous Effects

According to the embodiments disclosed in this specification, an electronic device may determine a reflection coefficient for an antenna without using a bidirectional coupler by obtaining a signal, which is generated by combining a forward signal and a reverse signal, using one line.

According to the embodiments disclosed in this specification, the electronic device may provide an effect of material cost reduction and mounting space reduction by determining a reflection coefficient for an antenna without using a bidirectional coupler.

Besides, a variety of effects directly or indirectly understood through the disclosure may be provided.

