Wireless communication device and wireless communication system

1 . A wireless communication device, comprising:

a radio frequency circuit module, comprising:

an antenna module comprising an antenna structure and a control chip, wherein the control chip is electrically connected to the antenna structure and configured to use the antenna structure to perform wireless communication; and

at least one flexible substrate configured to carry the antenna module, wherein the at least one flexible substrate comprises two substrate regions, one of the substrate regions encompasses the antenna structure or the control chip, a foldable portion of the at least one flexible substrate is foldable at a junction line between the substrate regions, and the radio frequency circuit module is foldable at the foldable portion;

 wherein the antenna structure comprises:

a first antenna radiation plate having a plurality of open slots extending from a plurality of edges of the first antenna radiation plate to the center of the first antenna radiation plate; and

a second antenna radiation plate disposed under the first antenna radiation plate and overlapped with the first antenna radiation plate along the normal direction of the first antenna radiation plate, wherein there is a distance located between the first antenna radiation plate and the second antenna radiation plate, and the distance enables the second antenna radiation plate to couple with the first antenna radiation plate;

wherein the antenna module further comprises a metal plate disposed on the antenna module and overlapped with the antenna structure, wherein the metal plate has a though hole to expose the antenna structure, an edge of the metal plate has a corner portion, and an angle included by two side of the corner portion is in a range from 100 degrees to 150 degrees.

2 . The wireless communication device of claim 1 , wherein the radio frequency circuit module is capable of being bent in an L-shape, and disposed at a corner of the wireless communication device.

3 . The wireless communication device of claim 1 , wherein the second antenna radiation plate of the antenna structure further comprises at least one first feeding portion and at least one second feeding portion, wherein the least one first feeding portion is electrically connected to a transmission (TX) pin of the control chip, and the at least one second feeding portion is electrically connected to a receiving (RX) pin of the control chip.

4 . The wireless communication device of claim 3 , wherein the length of each of the open slots is ranging from 0.015λ to 0.1λ, the width of each of the open slots is ranging from 0.015λ to 0.1λ, and λ is the wavelength of the wireless communication device.

5 . The wireless communication device of claim 3 , wherein the distance between the first antenna radiation plate and the second antenna radiation plate is ranging from 0.015λ to 0.1λ, and λ is the wavelength of the wireless communication device.

6 . The wireless communication device of claim 1 , further comprising a storage device storing a plurality of first data sets and electrically connected to the radio frequency circuit module to use the radio frequency circuit module to transmit the first data sets, or to receive a plurality of second data sets and store the second data sets into the storage device.

7 . The wireless communication device of claim 6 , further comprising:

a battery configured to provide electric power to the radio frequency circuit module and the storage device; and

a wireless charging device configured to charge the battery.

8 . The wireless communication device of claim 1 , wherein material of the at least one flexible substrate is liquid crystal polymer (LCP).

9 . The wireless communication device of claim 1 , further comprising a magnetic device, wherein an iron structure or a magnetic structure of a corresponding wireless communication device and the magnetic device are attracted by each other for positioning.

10 . A wireless communication system, comprising a plurality of wireless communication devices, wherein each of the wireless communication devices comprises:

a radio frequency circuit module, comprising:

an antenna module comprising an antenna structure and a control chip, wherein the control chip is electrically connected to the antenna structure and configured to use the antenna structure to perform wireless communication; and

at least one flexible substrate configured to carry the antenna module, wherein the at least one flexible substrate comprises two substrate regions, one of the substrate regions encompasses the antenna structure or the control chip, a foldable portion of the at least one flexible substrate is foldable at a junction line between the substrate regions, and the radio frequency circuit module is foldable at the foldable portion; wherein the antenna structure comprises:

a first antenna radiation plate having a plurality of open slots extending from a plurality edges of the first antenna radiation plate to a center of the first antenna radiation plate; and

a second antenna radiation plate disposed under the first antenna radiation plate and overlapped with the first antenna radiation plate along a normal direction of the first antenna radiation plate, and there is a distance located between the first antenna radiation plate and the second antenna radiation plate, and the distance enables the second antenna radiation plate to couple with the first antenna radiation plate;

wherein when a first one of the wireless communication devices communicates with a second one of the wireless communication devices, the antenna module of the first one of the wireless communication devices and the antenna module of the second one of the wireless communication devices are arranged to face each other;

wherein the antenna module further comprises a metal plate disposed on the antenna module and overlapped with the antenna structure, wherein the metal plate has a though hole to expose the antenna structure, an edge of the metal plate has a corner portion, and an angle included by two side of the corner portion is in a range from 100 degrees to 150 degrees.

11 . The wireless communication system of claim 10 , wherein the radio frequency circuit module is capable of being bent in a L-shape, and disposed at a corner of the wireless communication device.

12 . The wireless communication system of claim 10 , wherein the second antenna radiation plate of the antenna structure further comprises at least one first feeding portion and at least one second feeding portion, wherein the least one first feeding portion is electrically connected to a transmission (TX) pin of the control chip, and the at least one second feeding portion is electrically connected to a receiving (RX) pin of the control chip.

13 . The wireless communication system of claim 12 , wherein the length of each of the open slots is ranging from 0.015λ to 0.1λ, the width of each of the open slots is ranging from 0.015λ to 0.1λ, and λ is the wavelength of the wireless communication device.

14 . The wireless communication system of claim 12 , wherein the distance between the first antenna radiation plate and the second antenna radiation plate is ranging from 0.015λ to 0.1λ, and λ is the wavelength of the wireless communication device.

15 . The wireless communication system of claim 10 , wherein each of the wireless communication devices further comprises a storage device storing a plurality of first data sets and electrically connected to the radio frequency circuit module to use the radio frequency circuit module to transmit the first data sets, or to receive a plurality of second data sets and store the second data sets into the storage device.

16 . The wireless communication system of claim 15 , wherein each of the wireless communication devices further comprises:

a battery configured to provide electric power to the radio frequency circuit module and the storage device; and

a wireless charging device configured to charge the battery.

17 . The wireless communication system of claim 10 , wherein material of the at least one flexible substrate is liquid crystal polymer (LCP).

18 . The wireless communication system of claim 10 , further comprising a magnetic device, wherein an iron structure or a magnetic structure of a corresponding wireless communication device and the magnetic device are attracted by each other for positioning.