Wireless communication device and wireless communication system

Abstract

A wireless communication device and a wireless communication system are disclosed. The wireless communication device includes a radio frequency (RF) circuit module. The RF circuit module includes an antenna module supported on a flexible substrate. The antenna module includes an array antenna and a control chip. The control chip is electrically connected to the array antenna. The array antenna includes a first connection line, a second connection line, a reference ground, a third connection line, and a fourth connection line. The first and second connection lines are electrically connected to a first signal transceiver line and located on a first side of the reference ground, and the third and fourth connection lines are electrically connected to a second signal transceiver line and located on a second side of the reference ground, with the first and second sides opposite each other.

Claims

1. A wireless communication device, comprising: a radio frequency circuit module, including: an antenna module including an array antenna and a control chip, the control chip being electrically connected to the array antenna and configured to perform wireless communication using the array antenna; wherein the antenna module is supported by a flexible substrate, wherein the flexible substrate has a multilayer structure and includes two substrate regions, at least one of the substrate regions including the array antenna or the control chip, and a foldable portion of the flexible substrate... The array antenna can be bent at one of the boundary lines of the substrate regions to bend the RF circuit module at an angle at the bending portion; wherein the array antenna includes at least four groups of antenna elements, each group of antenna elements includes a first antenna radiator and a second antenna radiator, the first antenna radiator is disposed on a first layer of the flexible substrate, the second antenna radiator is disposed on a second layer of the flexible substrate, the second layer is located below the first layer, the normal of the second antenna radiator overlaps with the normal of the first antenna radiator, and there is a gap and coupling between the second antenna radiator and the first antenna radiator; the array antenna further includes: a first connection line disposed on a third layer of the flexible substrate and electrically connected between a first group and a second group of antenna elements; a second connection line disposed on the third layer of the flexible substrate and electrically connected between a third group and a fourth group of antenna elements; a reference ground disposed on a fourth layer of the flexible substrate; A third connection line is disposed on the fifth layer of the flexible substrate and electrically connected between the first group and the third group of the antenna elements; a fourth connection line is disposed on the fifth layer of the flexible substrate and electrically connected between the second group and the fourth group of the antenna elements; a first signal transceiver line is disposed on the fifth layer of the flexible substrate and electrically connected to the first group, the second group, the third group and the fourth group of the antenna elements; and a second signal transceiver line is disposed on the fifth layer of the flexible substrate and electrically connected to the first group, the second group, the third group and the fourth group of the antenna elements; wherein the first connection line and the second connection line are electrically connected to the first signal transceiver line and are located on a first side of the reference ground, and the third connection line and the fourth connection line are electrically connected to the second signal transceiver line and are located on a second side of the reference ground, the first side and the second side being opposite to each other.

2. The wireless communication device as claimed in claim 1, wherein the flexible substrate further comprises a plurality of insulating layers, the insulating layers being disposed between the first layer and the second layer of the flexible substrate, between the second layer and the third layer of the flexible substrate, between the third layer and the fourth layer of the flexible substrate, and between the fourth layer and the fifth layer of the flexible substrate.

3. The wireless communication device as described in claim 2, wherein the insulating layers are made of polytetrafluoroethylene (PTFE) or liquid crystal polymer (LCP).

4. The wireless communication device as claimed in claim 1, wherein the first connection line is electrically connected via a via structure to the second antenna radiator of the first group and the second antenna radiator of the second group of the antenna elements; the second connection line is electrically connected via a via structure to the second antenna radiator of the third group and the second antenna radiator of the fourth group of the antenna elements; the third connection line is electrically connected via a via structure to the second antenna radiator of the first group and the second antenna radiator of the third group of the antenna elements; and the fourth connection line is electrically connected via a via structure to the second antenna radiator of the second group and the second antenna radiator of the fourth group of the antenna elements.

5. The wireless communication device as claimed in claim 4, wherein the feed direction of the first signal transceiver line is orthogonal to the feed direction of the second signal transceiver line, and the feed directions of the first connecting line and the second connecting line are orthogonal to the feed directions of the third connecting line and the fourth connecting line; the first signal transceiver line is electrically connected to the antenna elements through the first connecting line and the second connecting line to form an array with a first polarization direction; the second signal transceiver line is electrically connected to the antenna elements through the third connecting line and the fourth connecting line to form an array with a second polarization direction.

6. The wireless communication device as claimed in claim 5, wherein the first signal transceiver line is electrically connected to the receiver (RX) or transmitter (TX) pin of the control chip, and the second signal transceiver line is electrically connected to the receiver or transmitter pin of the control chip.

7. A wireless communication system comprising: at least two wireless communication devices as described in claim 1, wherein the wireless communication devices include a first wireless communication device and a second wireless communication device, wherein when the first wireless communication device communicates with the second wireless communication device: the first wireless communication device transmits a signal with a first polarization direction to the array antenna of the second wireless communication device through the first signal transceiver line of the first wireless communication device, so that the second wireless communication device receives the signal with the first polarization direction through the first signal transceiver line or the second signal transceiver line of the second wireless communication device; or the first wireless communication device transmits a signal with a second polarization direction to the array antenna of the second wireless communication device through the second signal transceiver line of the first wireless communication device, so that the second wireless communication device receives the signal with the second polarization direction through the first signal transceiver line or the second signal transceiver line of the second wireless communication device.

8. The wireless communication system as described in claim 7, wherein the first wireless communication device and the second wireless communication device have bidirectional communication capabilities, and the second wireless communication device transmits a signal to the array antenna of the first wireless communication device through the first signal transceiver line or the second signal transceiver line of the second wireless communication device, so that the first wireless communication device receives the signal accordingly.

9. The wireless communication system as described in claim 8, wherein the array antenna is a dual-polarized antenna structure and simultaneously supports vertical polarization and horizontal polarization.

10. The wireless communication system as claimed in claim 9, wherein the first wireless communication device and the second wireless communication device further include magnetic devices to attract each other for alignment.

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