CN110277651B - Intelligent antenna device - Google Patents

Intelligent antenna device Download PDF

Info

Publication number
CN110277651B
CN110277651B CN201810220813.XA CN201810220813A CN110277651B CN 110277651 B CN110277651 B CN 110277651B CN 201810220813 A CN201810220813 A CN 201810220813A CN 110277651 B CN110277651 B CN 110277651B
Authority
CN
China
Prior art keywords
antenna
electrically connected
polarized antenna
polarized
smart
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810220813.XA
Other languages
Chinese (zh)
Other versions
CN110277651A (en
Inventor
郑敬伦
黄俊哲
詹长庚
古光原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wistron Neweb Corp
Original Assignee
Wistron Neweb Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wistron Neweb Corp filed Critical Wistron Neweb Corp
Priority to CN201810220813.XA priority Critical patent/CN110277651B/en
Publication of CN110277651A publication Critical patent/CN110277651A/en
Application granted granted Critical
Publication of CN110277651B publication Critical patent/CN110277651B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H01Q3/16—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
    • H01Q3/20—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is fixed and the reflecting device is movable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/10—Resonant antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands

Abstract

A smart antenna device. The antenna device comprises a first intelligent antenna, wherein the antenna comprises a first polarized antenna, a second polarized antenna, a first switch unit, a first control end and a second control end; the first polarized antenna comprises a first antenna, a first reflecting element and a second reflecting element, wherein the first reflecting element and the second reflecting element are respectively arranged on a first side edge and a second side edge of the first antenna; the second polarized antenna comprises a second antenna, a third reflecting element and a fourth reflecting element which are respectively arranged on the third side and the fourth side of the second antenna; the first switch unit comprises a first switch element electrically connected to the first reflecting element, a second switch element electrically connected to the second reflecting element, a third switch element electrically connected to the third reflecting element and a fourth switch element electrically connected to the fourth reflecting element; the first control end is used for conducting the first switching element and the third switching element; the second control terminal is used for conducting the second switch element and the fourth switch element. The invention can change the radiation field pattern of the intelligent antenna device.

Description

Intelligent antenna device
Technical Field
The present invention relates to an antenna, and more particularly, to an intelligent antenna device.
Background
The antennas used in current network communication products are usually of an omnidirectional radiation pattern, such as dipole antennas (dipole antennas). However, when the product position is fixed, only fixed radiation characteristics can be provided for signal transmission and reception, so that the problem of poor signal transmission and reception and reduction of transmission speed often occurs.
In addition, in existing antenna designs, multiple fixed position antennas are used, and switching elements in the circuit board on the wireless communication module (or the circuit board of the overall system) are used to control the overall radiation pattern. However, in this design, antenna designers encounter considerable design limitations on antenna design due to space limitations and cost considerations.
Furthermore, the conventional antenna has only one polarization direction, such as only a horizontal polarization direction or only a vertical polarization direction, and thus, antenna signals are often not transmitted effectively.
Therefore, it is desirable to provide a smart antenna apparatus to solve the above problems.
Disclosure of Invention
The present invention is directed to provide a smart antenna device for overcoming the drawbacks of the prior art.
In order to solve the above technical problem, one of the technical solutions of the present invention is to provide an intelligent antenna apparatus, which includes a first intelligent antenna, where the first intelligent antenna includes a first polarized antenna, a second polarized antenna, a first switch unit, a first control end, and a second control end; the first polarized antenna comprises a first antenna, a first reflecting element arranged on a first side of the first antenna and a second reflecting element arranged on a second side of the first antenna; the second polarized antenna comprises a second antenna, a third reflecting element arranged on a third side of the second antenna and a fourth reflecting element arranged on a fourth side of the second antenna; the first switch unit comprises a first switch element electrically connected to the first reflecting element, a second switch element electrically connected to the second reflecting element, a third switch element electrically connected to the third reflecting element and a fourth switch element electrically connected to the fourth reflecting element; the first control end is used for conducting the first switch element and the third switch element; the second control terminal is used for conducting the second switch element and the fourth switch element.
One of the benefits of the present invention is that the smart antenna apparatus provided in the embodiment of the present invention can achieve the effect of changing the radiation field type of the smart antenna apparatus by using the technical scheme that the first control terminal is used for turning on the first switch element and the third switch element, and the second control terminal is used for turning on the second switch element and the fourth switch element.
For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the invention and accompanying drawings, which are provided for purposes of illustration and description only and are not intended to limit the invention.
Drawings
Fig. 1 is a schematic diagram of a first smart antenna of a smart antenna device according to an embodiment of the invention.
Fig. 2 is a schematic diagram illustrating a first smart antenna of a smart antenna device according to an embodiment of the invention implemented on a substrate.
Fig. 3 is a schematic perspective view of a first smart antenna of a smart antenna device according to an embodiment of the invention.
Fig. 4 is a schematic perspective exploded view of a first smart antenna of a smart antenna device according to an embodiment of the invention.
Fig. 5 is a functional block diagram of a smart antenna device according to an embodiment of the invention.
Fig. 6 is another functional block diagram of a smart antenna apparatus according to an embodiment of the invention.
Fig. 7A is a schematic view of a radiation pattern of the first switch element, the second switch element, the third switch element and the fourth switch element of the first polarized antenna in a non-conducting state.
Fig. 7B is a schematic view of the radiation pattern of the first switch element, the second switch element, the third switch element and the fourth switch element of the second polarized antenna in the non-conducting state.
Fig. 8A is a schematic view of radiation patterns of the first switching element and the third switching element of the first polarized antenna in a conducting state, and the second switching element and the fourth switching element in a non-conducting state.
Fig. 8B is a schematic view of the radiation patterns of the second polarized antenna when the first switching element and the third switching element are in the conducting state and the second switching element and the fourth switching element are in the non-conducting state.
Fig. 9A is a schematic view of radiation patterns of the first polarized antenna when the second switching element and the fourth switching element are in a conducting state and the first switching element and the third switching element are in a non-conducting state.
Fig. 9B is a schematic view of the radiation patterns of the second switching element and the fourth switching element of the second polarized antenna in the conducting state, and the first switching element and the third switching element in the non-conducting state.
Fig. 10 is a diagram illustrating a second smart antenna of the smart antenna apparatus according to the embodiment of the invention.
Fig. 11 is a schematic perspective view of a second smart antenna of the smart antenna apparatus according to the embodiment of the invention.
Fig. 12 is a schematic perspective exploded view of a second smart antenna of a smart antenna device according to an embodiment of the invention.
Fig. 13 is a schematic perspective view illustrating a first smart antenna and a second smart antenna of a smart antenna device according to an embodiment of the invention.
Fig. 14 is a functional block diagram of a smart antenna apparatus according to an embodiment of the invention.
Fig. 15A is a schematic view of the radiation pattern of the first polarized antenna.
Fig. 15B is a schematic view of the radiation pattern of the second polarized antenna.
Fig. 16A is a schematic view of a radiation pattern of the third polarized antenna.
Fig. 16B is a schematic diagram of the radiation pattern of the fourth polarized antenna.
Description of the main component symbols:
fifth reflective element of smart antenna assembly 212
1 ninth segment of first smart antenna 2121
11S tenth section of first base plate 2122
11 first polarized antenna 213 sixth reflecting element
111 eleventh section of first antenna 2131
1111 nd section of first radiation part 2132
1112 second radiation part 22S fourth substrate
1113 first feed-in piece 22 fourth polarized antenna
1113' first coaxial Cable line 221 fourth antenna
112 first reflecting element 2211 seventh radiating section
1121 first section 2212 eighth radiating portion
1122 second section 2213 fourth feed-in piece
113 second reflective element 222 seventh reflective element
1131 third section 2221 thirteenth section
1132 fourth section 2222 fourteenth section
12S second substrate 223 eighth reflective element
12 the fifteenth section of the second polarized antenna 2231
121 second antenna 2232 sixteenth segment
1211 third radiation part 23 second switch unit
1212 fifth switching element of the fourth radiation section 231
1213 second feed-in element 232 sixth switching element
1213' second coaxial cable line 233 seventh switching element
122 third reflective element 234 eighth switching element
1221 fifth section 24 fifth RF choke unit
1222 sixth section 25 sixth radio frequency choke unit
123 fourth reflecting element 26 seventh radio frequency choke unit
1231 seventh section 27 eighth rf choke unit
1232 eighth segment 3 RF circuit
13 first switching unit 4 switching circuit
131 first switching element 5 duplexer
132 second switching element R1 first reflective structure
133 third switching element R2 second reflective structure
134 fourth switching element R3 third reflective structure
14 first rf choke unit R4 fourth reflecting structure
141 first RF choke element V through hole
142 second radio frequency choke element L choke element
15 second RF choke unit theta 1 with a first predetermined angle
151 third radio frequency choke element theta 2 second predetermined angle
152 a first control terminal of a fourth rf choke element P1
16 second control terminal of third RF choke unit P2
161 third control terminal of fifth rf choke element P3
162 fourth control terminal of sixth rf choke P4
17 a fourth RF choke unit F1 a first signal feeding terminal
171 seventh rf choke F2 first ground
172 eighth rf choke element F3 second signal feed terminal
2 second smart antenna F4 second ground terminal
21S third substrate F5 third signal feed terminal
21 third polarized antenna F6 third ground terminal
211 third antenna F7 fourth signal feed terminal
2111 fifth radiation part F8 fourth ground terminal
2112 direction of sixth radiating portion X, Y, Z
2113 third feeding element
Detailed Description
The following is a description of the embodiments of the "smart antenna device" disclosed in the present application with reference to specific embodiments, and those skilled in the art will understand the advantages and effects of the present application from the disclosure of the present application. The invention is capable of other and different embodiments and its several details are capable of modification and various other changes, which can be made in various details within the specification and without departing from the spirit and scope of the invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are used primarily to distinguish one element from another element or from one signal to another signal. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be.
[ examples ]
First, referring to fig. 1, fig. 1 is a schematic diagram of a first smart antenna of a smart antenna device according to an embodiment of the invention. It should be noted that the smart antenna apparatus a of the present invention may preferably include a first smart antenna 1 and a second smart antenna 2 (see fig. 13), but the smart antenna apparatus a including only the first smart antenna 1 may still be implemented, and the following embodiments will be described with reference to the smart antenna apparatus a including the first smart antenna 1.
In view of the above, referring to fig. 1, the present invention provides an intelligent antenna apparatus a, which includes a first intelligent antenna 1, wherein the first intelligent antenna 1 may include a first polarized antenna 11, a second polarized antenna 12, a first switch unit 13, a first control terminal P1 and a second control terminal P2. For example, the polarization direction of the first polarized antenna 11 and the polarization direction of the second polarized antenna 12 are different from each other, and in one embodiment, the polarization directions of the first polarized antenna 11 and the second polarized antenna 12 are substantially orthogonal. In addition, for one embodiment, the first polarized antenna 11 may be a horizontally polarized antenna, and the second polarized antenna 12 may be a vertically polarized antenna, but the invention is not limited thereto.
In view of the above, referring to fig. 1, the first polarized antenna 11 may include a first antenna 111, a first reflective element 112 disposed on a first side (e.g., right side) of the first antenna 111, and a second reflective element 113 disposed on a second side (e.g., left side) of the first antenna 111. In addition, the second polarized antenna 12 may include a second antenna 121, a third reflective element 122 disposed on a third side (e.g., right side) of the second antenna 121, and a fourth reflective element 123 disposed on a fourth side (e.g., left side) of the second antenna 121. In view of the above, for example, the first antenna 111 and the second antenna 121 may be implemented by a dipole antenna, and the first antenna 111 and the second antenna 121 may generate at least one operating frequency band, which may range from 5150MHz to 5850MHz, so as to be suitable for 5G WLAN (Wireless LAN) frequency band, but the invention is not limited thereto. In other embodiments, the antenna design of the smart antenna device a may be a dual-frequency (2.4G/5G) dual-polarized antenna, that is, the first antenna 111 and the second antenna 121 both have two operating bands, for example, a first operating band between 5150MHz and 5850MHz and a second operating band between 2400MHz and 2500MHz, but the invention is not limited thereto. It should be noted that, in the following embodiments, the frequency ranges of the operating frequency bands of the first antenna 111 and the second antenna 121 are between 5150MHz and 5850MHz, which will be described.
In addition, referring to fig. 1 again, for example, the first reflective element 112 and the second reflective element 113 may be respectively disposed in parallel on two opposite sides (e.g., right side and left side) of the first antenna 111, and the third reflective element 122 and the fourth reflective element 123 may be respectively disposed in parallel on two opposite sides (e.g., right side and left side) of the second antenna 121. Thus, the radiation pattern of the first antenna 111 can be changed by turning on one of the first reflective element 112 and the second reflective element 113, and the radiation pattern of the second antenna 121 can be changed by turning on one of the third reflective element 122 and the fourth reflective element 123. The following embodiments will further specifically explain the details of implementation of the radiation pattern change.
In addition, referring to fig. 1 again, preferably, the distance between the first reflective element 112 and the first antenna 111 is between one eighth (0.125 λ) and one quarter (0.25 λ) of the wavelength corresponding to the operating frequency of the first antenna 111, the distance between the second reflective element 113 and the first antenna 111 is between one eighth (0.125 λ) and one quarter (0.25 λ) of the wavelength corresponding to the operating frequency of the first antenna 111, the distance between the third reflective element 122 and the second antenna 121 is between one eighth (0.125 λ) and one quarter (0.25 λ) of the wavelength corresponding to the operating frequency of the second antenna 121, the distance between the fourth reflective element 123 and the second antenna 121 is between one eighth (0.125 λ) and one quarter (0.25 λ) of the wavelength corresponding to the operating frequency of the second antenna 121, and the operating frequency can be, for example, the center frequency of the operating frequency band of the smart antenna device a, however, the invention is not limited thereto. Furthermore, when the antenna of the smart antenna device a is designed as a dual-frequency dual-polarized antenna, the operating frequency thereof can be selected from the center frequency of the operating frequency band of the higher frequency supported by the smart antenna device a, so that the distance between the first antenna 111 and each reflective element is shorter, thereby reducing the overall size of the smart antenna device a. In other words, when the first polarized antenna 11 and the second polarized antenna 12 support a first operating frequency band and a second operating frequency band respectively, and the center frequency of the first operating frequency band is higher than the center frequency of the second operating frequency band, the distance between the first reflecting element 112 and the first antenna 111 is between one-eighth to one-quarter of the wavelength corresponding to the center frequency of the first operating frequency band of the first antenna 111, the distance between the second reflecting element 113 and the first antenna 111 is between one-eighth to one-quarter of the wavelength corresponding to the center frequency of the first operating frequency band of the first antenna 111, the distance between the third reflecting element 122 and the second antenna 121 is between one-eighth to one-quarter of the wavelength corresponding to the center frequency of the first operating frequency band of the second antenna 121, and the distance between the fourth reflecting element 123 and the second antenna 121 is between one-eighth to four-fourth of the wavelength corresponding to the center frequency of the first operating frequency band of the second antenna 121 One-half. Furthermore, it is preferable that the distance between the first reflective element 112 and the first antenna 111 is the same as the distance between the second reflective element 113 and the first antenna 111, and the distance between the third reflective element 122 and the second antenna 121 is the same as the distance between the fourth reflective element 123 and the second antenna 121, but the invention is not limited thereto.
In light of the above, referring to fig. 1, the first switch unit 13 may include a first switch element 131 electrically connected to the first reflective element 112, a second switch element 132 electrically connected to the second reflective element 113, a third switch element 133 electrically connected to the third reflective element 122, and a fourth switch element 134 electrically connected to the fourth reflective element 123. For example, the first switch element 131, the second switch element 132, the third switch element 133 and the fourth switch element 134 may be diodes or Metal-Oxide-Semiconductor Field-Effect transistors (MOSFETs), but the invention is not limited thereto, and other types of unidirectional switch elements may be used in other embodiments. It should be noted that the first switch element 131, the second switch element 132, the third switch element 133 and the fourth switch element 134 may be connected in series to the conduction path of the first reflective element 112, the conduction path of the second reflective element 113, the conduction path of the third reflective element 122 and the conduction path of the fourth reflective element 123, respectively. Thus, the first switch element 131, the second switch element 132, the third switch element 133 and the fourth switch element 134 can be respectively used for controlling whether the first reflective element 112, the second reflective element 113, the third reflective element 122 and the fourth reflective element 123 are turned on or off.
In view of the above, referring to fig. 1, one of the first control terminal P1 and the second control terminal P2 can output a first dc signal. Further, for example, the first control terminal P1 can be electrically connected to the first reflective element 112 and the third reflective element 122, and the second control terminal P2 can be electrically connected to the second reflective element 113 and the fourth reflective element 123. Therefore, the first direct current signal can be simultaneously input to the first reflective element 112 and the third reflective element 122, or the first direct current signal can be simultaneously input to the second reflective element 113 and the fourth reflective element 123. It should be noted that, when the first control terminal P1 and the second control terminal P2 are directly electrically connected to the diode, each reflective element will become a directional element (director), and therefore, preferably, the first control terminal P1 and the second control terminal P2 are indirectly electrically connected to the diode through the reflective element.
In addition, when the first control terminal P1 outputs the first dc signal, the first control terminal P1 can be used to turn on the first switching element 131 and the third switching element 133. When the second control terminal P2 outputs the first dc signal, the second control terminal P2 can be used to turn on the second switch element 132 and the fourth switch element 134. Therefore, the first reflective element 112 and the third reflective element 122 can be selectively turned on simultaneously or the second reflective element 113 and the fourth reflective element 123 can be turned on simultaneously, so as to control the radiation patterns of the first antenna 111 and the second antenna 121.
Next, referring to fig. 1 and fig. 2 to 4, fig. 2 is a schematic diagram illustrating a first smart antenna of a smart antenna device according to an embodiment of the invention implemented on a substrate. Fig. 3 is a schematic perspective assembly diagram of a first smart antenna of a smart antenna device according to an embodiment of the present invention, and fig. 4 is a schematic perspective exploded diagram of the first smart antenna of the smart antenna device according to the embodiment of the present invention. In detail, the smart antenna device a may further include a first substrate 11S and a second substrate 12S, the first polarized antenna 11 may be disposed on the first substrate 11S, the second polarized antenna 12 may be disposed on the second substrate 12S, and the first substrate 11S and the second substrate 12S are substantially vertically disposed. However, in other embodiments, the first substrate 11S and the second substrate 12S may have a first predetermined included angle θ 1 between 80 degrees and 100 degrees. It should be noted that, when the first substrate 11S and the second substrate 12S are substantially vertically disposed, the antenna isolation can be maximized, so as to achieve the effect of reducing the interference of the radiation signal. Further, for example, the first substrate 11S and the second substrate 12S may be respectively a microwave substrate, the microwave substrate may be, for example, a Printed Circuit Board (PCB), and the first polarized antenna 11 and the second polarized antenna 12 may be respectively fabricated on the first substrate 11S and the second substrate 12S by using an etching technique, but the invention is not limited thereto.
As described above, referring to fig. 1 and fig. 2, for example, the first reflective element 112 may include a first section 1121 and a second section 1122, and the first switch element 131 may be electrically connected between the first section 1121 and the second section 1122. In addition, the second reflective element 113 may include a third section 1131 and a fourth section 1132, and the second switch element 132 may be electrically connected between the third section 1131 and the fourth section 1132. In addition, the third reflective element 122 may include a fifth section 1221 and a sixth section 1222, and the third switching element 133 may be electrically connected between the fifth section 1221 and the sixth section 1222. In addition, the fourth reflective element 123 may include a seventh section 1231 and an eighth section 1232, and the fourth switching element 134 may be electrically connected between the seventh section 1231 and the eighth section 1232. In addition, for the embodiment of the present invention, the first, second, third and fourth switching elements 131 to 134 are exemplified by a diode.
In view of the above, referring to fig. 1 and fig. 2, the first control terminal P1 may be electrically connected to the first segment 1121 of the first reflective element 112, the first segment 1121 of the first reflective element 112 may be electrically connected to the anode of the diode 131, the cathode of the diode 131 may be electrically connected to the second segment 1122 of the first reflective element 112, the first segment 1121 of the first reflective element 112 may be electrically connected to the fifth segment 1221 of the third reflective element 122, the fifth segment 1221 of the third reflective element 122 may be electrically connected to the anode of the diode 133, and the cathode of the diode 133 may be electrically connected to the sixth segment 1222 of the third reflective element 122. In addition, it is worth to be noted that the second section 1122 of the first reflective element 112 and the sixth section 1222 of the third reflective element 122 can be electrically connected to the ground. Further, the second control terminal P2 may be electrically connected to the third segment 1131 of the second reflective element 113, the third segment 1131 of the second reflective element 113 may be electrically connected to the anode of the diode 132, the cathode of the diode 132 may be electrically connected to the fourth segment 1132 of the second reflective element 113, the third segment 1131 of the second reflective element 113 may be electrically connected to the seventh segment 1231 of the fourth reflective element 123, the seventh segment 1231 of the fourth reflective element 123 may be electrically connected to the anode of the diode 134, and the cathode of the diode 134 may be electrically connected to the eighth segment 1232 of the fourth reflective element 123. It should be noted that the fourth section 1132 of the second reflective element 113 and the eighth section 1232 of the fourth reflective element 123 may be electrically connected to ground. It should be noted that, when the first polarized antenna 11 and the second polarized antenna 12 are respectively disposed on the first substrate 11S and the second substrate 12S, the first section 1121 of the first reflective element 112 can be electrically connected to the fifth section 1221 of the third reflective element 122, and the third section 1131 of the second reflective element 113 can be electrically connected to the seventh section 1231 of the fourth reflective element 123 by using a through hole v (via hole) or other conductive sheets, but the invention is not limited thereto.
In view of the above, referring to fig. 1 and fig. 2, the first antenna 111 may further include a first radiation portion 1111, a second radiation portion 1112, and a first feeding element 1113 for receiving a first rf signal, the first feeding element 1113 may have a first signal feeding end F1 and a first ground end F2, the first signal feeding end F1 may be electrically connected to the first radiation portion 1111, the first ground end F2 may be electrically connected to the second radiation portion 1112, and the second radiation portion 1112 may be electrically connected to the second segment 1122 of the first reflection element 112 and the fourth segment 1132 of the second reflection element 113. Furthermore, for example, as shown in fig. 1 and fig. 2, in one embodiment, the first feeding element 1113 may be a first coaxial cable 1113 ', and the first coaxial cable 1113' may have a first signal feeding end F1 and a first ground end F2. Therefore, the first coaxial cable 1113' can be used to feed the first RF signal into the first antenna 111. In addition, it should be noted that, in order to make the drawings easily understood, the first feeding element 1113 in fig. 1 is represented by an alternative symbol as the structure of the coaxial cable shown in fig. 2 to show the electrical connection manner of signal transmission, but the invention is not limited thereto.
In view of the above, referring to fig. 1 and fig. 2, the second antenna 121 may further include a third radiation portion 1211, a fourth radiation portion 1212, and a second feeding element 1213 for receiving a second rf signal, the second feeding element 1213 may have a second signal feeding end F3 and a second ground end F4, the second signal feeding end F3 may be electrically connected to the third radiation portion 1211, the second ground end F4 may be electrically connected to the fourth radiation portion 1212, and the fourth radiation portion 1212 is electrically connected to the sixth section 1222 of the third reflection element 122 and the eighth section 1232 of the fourth reflection element 123. For example, as shown in fig. 1 and fig. 2, in one embodiment, the second feeding element 1213 may be a second coaxial cable 1213 ', and the second coaxial cable 1213' may have a second signal feeding end F3 and a second ground end F4. Therefore, the second coaxial cable 1213' can be used to feed the second rf signal to the second antenna 121.
Next, referring to fig. 1 and fig. 2, for example, the second section 1122 of the first reflective element 112 and the fourth section 1132 of the second reflective element 113 may be grounded to the second radiation portion 1112 of the first antenna 111, and the sixth section 1222 of the third reflective element 122 and the eighth section 1232 of the fourth reflective element 123 may be grounded to the fourth radiation portion 1212 of the second antenna 121. Therefore, the second segment 1122 of the first reflective element 112 and the fourth segment 1132 of the second reflective element 113 may be electrically connected to the second radiation portion 1112 of the first antenna 111, and the sixth segment 1222 of the third reflective element 122 and the eighth segment 1232 of the fourth reflective element 123 may be electrically connected to the fourth radiation portion 1212 of the second antenna 121, which is not limited thereto.
As described above, referring to fig. 1 and fig. 2, for example, the first smart antenna 1 may further include a first rf choke unit 14 electrically connected between the second section 1122 of the first reflective element 112 and the second radiation portion 1112 of the first antenna 111, a second rf choke unit 15 electrically connected between the fourth section 1132 of the second reflective element 113 and the second radiation portion 1112 of the first antenna 111, a third rf choke unit 16 electrically connected between the sixth section 1222 of the third reflective element 122 and the fourth radiation portion 1212 of the second antenna 121, and a fourth rf choke unit 17 electrically connected between the eighth section 1232 of the fourth reflective element 123 and the fourth radiation portion 1212 of the second antenna 121, so as to filter noise and protect the diodes 131 to 134.
Next, referring to fig. 2 to 4, the first rf choke unit 14, the second rf choke unit 15, the third rf choke unit 16 and the fourth rf choke unit 17 may be Surface-mount devices (SMDs) and are respectively connected to the first substrate 11S and the second substrate 12S by a Surface-mount process, but the invention is not limited thereto. In addition, the first rf choke unit 14 may include a first rf choke element 141 and a second rf choke element 142 connected in series with each other. The first rf choke element 141 and the second rf choke element 142 may be connected by a wire (not numbered) disposed between the first rf choke element 141 and the second rf choke element 142, the first rf choke element 141 may be electrically connected to the second section 1122 of the first reflection element 112, and the second rf choke element 142 may be electrically connected to the second radiation portion 1112 of the first antenna 111. Preferably, the first rf choke element 141 may abut against an edge of the second section 1122 of the first reflecting element 112, and the second rf choke element 142 may abut against an edge of the second radiating portion 1112 of the first antenna 111. In addition, the second rf choke unit 15 may include a third rf choke element 151 and a fourth rf choke element 152 connected in series with each other. The third rf choke element 151 and the fourth rf choke element 152 may be connected by a conductive wire (not numbered) disposed between the third rf choke element 151 and the fourth rf choke element 152, the third rf choke element 151 may be electrically connected to the fourth section 1132 of the second reflection element 113, and the fourth rf choke element 152 may be electrically connected to the second radiation portion 1112 of the first antenna 111. Preferably, the third rf choke element 151 may abut against an edge of the fourth section 1132 of the second reflecting element 113, and the fourth rf choke element 152 may abut against an edge of the second radiation portion 1112 of the first antenna 111. In addition, the third rf choke unit 16 may include a fifth rf choke element 161 and a sixth rf choke element 162 connected in series with each other. The fifth rf choke element 161 and the sixth rf choke element 162 can be connected by a wire (not labeled) disposed between the fifth rf choke element 161 and the sixth rf choke element 162, the fifth rf choke element 161 can be electrically connected to the sixth section 1222 of the third reflective element 122, and the sixth rf choke element 162 can be electrically connected to the fourth radiation portion 1212 of the second antenna 121. Preferably, the fifth rf choke element 161 may abut against an edge of the sixth section 1222 of the third reflection element 122, and the sixth rf choke element 162 may abut against an edge of the fourth radiation portion 1212 of the second antenna 121. In addition, the fourth rf choke unit 17 may include a seventh rf choke element 171 and an eighth rf choke element 172 connected in series with each other. The seventh rf choke element 171 and the eighth rf choke element 172 can be connected by a wire (not labeled) disposed between the seventh rf choke element 171 and the eighth rf choke element 172, the seventh rf choke element 171 can be electrically connected to the eighth section 1232 of the fourth reflection element 123, and the eighth rf choke element 172 can be electrically connected to the fourth radiation portion 1212 of the second antenna 121. Preferably, the seventh rf choke element 171 may abut against an edge of the eighth section 1232 of the fourth reflecting element 123, and the eighth rf choke element 172 may abut against an edge of the fourth radiation portion 1212 of the second antenna 121. Therefore, by the characteristics of the adjacent reflection elements (the first reflection element 112, the second reflection element 113, the third reflection element 122, and the fourth reflection element 123) and the adjacent Antenna units (the first Antenna 111 and the second Antenna 121), the Antenna units (the first Antenna 111 and the second Antenna 121) can be prevented from generating stubs to influence the Antenna resonant frequency and impedance matching, and the field switching performance (Antenna Gain) can be prevented from being influenced by the stubs of the reflection elements (the first reflection element 112, the second reflection element 113, the third reflection element 122, and the fourth reflection element 123).
For example, the rf choke elements 151, 152, 161, 162, 171, 172, 181 and 182 may be inductors, but the invention is not limited thereto. In addition, preferably, to further filter noise, choke elements L may be disposed between the first control end P1 and the first section of the first reflection element 112, and between the second control end and the third section 1131 of the second reflection element, and meanwhile, choke elements L may also be disposed between the first section of the first reflection element 112 and the fifth section 1221 of the third reflection element 122, and between the third section of the second reflection element 113 and the seventh section 1231 of the fourth reflection element 123, and further, for example, the choke elements L may be inductors, but the invention is not limited thereto.
Next, referring to fig. 1 again, details of the implementation of the radiation pattern change will be further described. In detail, one of the first control terminal P1 and the second control terminal P2 can output a first dc signal. For example, when the first direct current signal turns off all of the diodes 131-134, the first antenna 111 and the second antenna radiate substantially omnidirectionally. When the diodes 131 and 133 are in the conducting state and the diodes 132 and 134 are in the non-conducting state, the radiation patterns of the first antenna 111 and the second antenna 121 can be changed to radiate toward a first direction (e.g., the left). In addition, when the diode 132 and the diode 134 of the first smart antenna 1 are in the conducting state and the diode 131 and the diode 133 are in the non-conducting state, the radiation patterns of the first antenna 111 and the second antenna 121 can be changed to radiate in a second direction (for example, the right side).
It should be noted that the smart antenna device a may further include a first reflective structure R1 and a second reflective structure R2. The first reflective structure R1 may be disposed on one side (e.g., above) of the second antenna 121, and the second reflective structure R2 may be disposed on the other side (e.g., below) of the second antenna 121. Thereby, the gain of the first smart antenna 1 of the smart antenna device a is adjusted and the radiation pattern is compressed.
Next, referring to fig. 5, fig. 5 is a functional block diagram of a smart antenna device according to an embodiment of the invention. The smart antenna apparatus a may further include a switching circuit 4 and a radio frequency circuit 3, wherein the radio frequency circuit 3 may be electrically connected to the switching circuit 4 to transmit a control signal to the switching circuit 4, and in addition, the radio frequency circuit 3 may be electrically connected to the first smart antenna 1 to transmit a first dc signal to one of the first control terminal P1 and the second control terminal P2. Further, the switching circuit 4 may be electrically connected to the feeding element of the first polarized antenna 11 and the feeding element of the second polarized antenna 12, and the switching circuit 4 may select one of the first polarized antenna 11 and the second polarized antenna 12 according to the control signal, so as to transmit a first rf signal of the rf circuit 3 to the first polarized antenna 11 or transmit a second rf signal of the rf circuit 3 to the second polarized antenna 12. In other words, the switching circuit 4 is configured to selectively transmit the rf signal to one of the first polarized antenna 11 and the second polarized antenna 12, i.e. the first polarized antenna 11 and the second polarized antenna 12 are alternatively turned on. Furthermore, for example, the first polarized antenna 11 can be a horizontally polarized antenna, the second polarized antenna 12 can be a vertically polarized antenna, and the switching circuit 4 can switch the rf signal to the proper polarized antenna for signal transmission according to the control signal, i.e. the switching circuit 4 can be used to switch the polarization direction of the first smart antenna 1.
Referring to fig. 6, fig. 6 is another functional block diagram of an intelligent antenna device according to an embodiment of the present invention. For example, when the first antenna 111 and the second antenna 121 of the first smart antenna 1 not only have the first operating frequency band between 5150MHz to 5850MHz, but also further include the second operating frequency band between 2400MHz to 2500MHz, the smart antenna apparatus a may further include a duplexer (Diplexer) 5. In addition, the duplexer 5 may be electrically connected between the switching circuit 4 and the first smart antenna 1, and the duplexer 5 may be operable on the first operating frequency band and the second operating frequency band of the first smart antenna 1. The rf circuit 3 may further include an rf transceiver (not shown) for a first operating band and an rf transceiver (not shown) for a second operating band.
Next, referring to fig. 7A to 9B, fig. 7A is a schematic diagram of a radiation pattern of first to fourth switch elements of a first polarized antenna in a non-conducting state, fig. 7B is a schematic diagram of a radiation pattern of first to fourth switch elements of a second polarized antenna in a non-conducting state, fig. 8A is a schematic diagram of a radiation pattern of first and third switch elements of the first polarized antenna in a conducting state and second and fourth switch elements in a non-conducting state, fig. 8B is a schematic diagram of a radiation pattern of first and third switch elements of the second polarized antenna in a conducting state and second and fourth switch elements in a non-conducting state, fig. 9A is a schematic diagram of a radiation pattern of second and fourth switch elements of the first polarized antenna in a conducting state and first and third switch elements in a non-conducting state, fig. 9B is a schematic diagram of a radiation pattern of second and fourth switch elements of the second polarized antenna in a conducting state, and the radiation pattern of the first and third switching elements in the non-conducting state. The first polarized antenna 11 will be exemplified as a horizontally polarized antenna, and the second polarized antenna 12 will be exemplified as a vertically polarized antenna.
As shown in fig. 7A and 7B, when the rf circuit 3 does not provide the first dc signal to the first control terminal P1 or the second control terminal P2, the first switch element 131, the second switch element 132, the third switch element 133, and the fourth switch element 134 are all turned off, and the switching circuit 4 can select one of the first polarized antenna 11 and the second polarized antenna 12 according to the control signal from the rf circuit 3 to transmit a first rf signal to the first polarized antenna 11 or transmit a second rf signal to the second polarized antenna 12, so that the radiation field of one of the first polarized antenna 11 and the second polarized antenna 12 can be omni-directional radiation.
As described above, as shown in fig. 8A and 8B, when the first control terminal P1 turns on the first switch element 131 and the third switch element 133 and the switching circuit 4 selects one of the first polarized antenna 11 and the second polarized antenna 12, the radiation pattern of the first smart antenna 1 can be oriented in a first direction (e.g., -X direction). That is, the switching circuit 4 can selectively use the first polarized antenna 11 or the second polarized antenna 12 according to the control signal from the rf circuit 3, and further make the radiation pattern of the first polarized antenna 11 or the second polarized antenna 12 face a first direction.
As described above, as shown in fig. 9A and 9B, when the second control terminal P2 turns on the second switch element 132 and the fourth switch element 134 and the switching circuit 4 selects one of the first polarized antenna 11 and the second polarized antenna 12, the radiation pattern of the first smart antenna 1 can be oriented in a second direction (e.g., + X direction). That is, the switching circuit 4 can selectively use the first polarized antenna 11 or the second polarized antenna 12 according to the control signal from the rf circuit 3, and the radiation pattern of the first polarized antenna 11 or the second polarized antenna 12 can be oriented to a second direction.
Accordingly, as can be seen from a comparison between fig. 8A and 8B and fig. 9A and 9B, the rf circuit 3 selects one of the first control terminal P1 and the second control terminal P2 to output a first dc signal, so that the first smart antenna 1 can generate a radiation field pattern with radiation directions opposite to each other, i.e., a first direction (e.g., -X direction) and a second direction (e.g., + X direction) opposite to each other.
Next, referring to fig. 10 to 12, fig. 10 is a schematic diagram of a second smart antenna of a smart antenna device according to an embodiment of the present invention, fig. 11 is a schematic diagram of a third smart antenna of the smart antenna device according to an embodiment of the present invention, and fig. 12 is a schematic diagram of a third smart antenna of the smart antenna device according to an embodiment of the present invention. As can be seen from a comparison between fig. 10 and fig. 1, the structure of the second smart antenna 2 is substantially similar to that of the first smart antenna 1, and therefore, the structural features shown in fig. 10 are similar to those described above, and are only further described by other names or element symbols, so detailed features thereof are not repeated herein.
As described above, referring to fig. 10 to 12, the second smart antenna 2 may include a third polarized antenna 21, a fourth polarized antenna 22, a second switch unit 23, a third control terminal P3 and a fourth control terminal P4. The third polarized antenna 21 may include a third antenna 211, a fifth reflective element 212 disposed on a fifth side of the third antenna 211, and a sixth reflective element 213 disposed on a sixth side of the third antenna 211. The fourth polarized antenna 22 may include a fourth antenna 221, a seventh reflective element 222 disposed on a seventh side of the fourth antenna 221, and an eighth reflective element 223 disposed on an eighth side of the fourth antenna 221. In addition, the third antenna 211 and the fourth antenna 221 can generate at least one operating band or two operating bands as described above. Preferably, the smart antenna device a may further include a third substrate 21S and a fourth substrate 22S, the third polarized antenna 21 may be disposed on the third substrate 21S, the fourth polarized antenna 22 may be disposed on the fourth substrate 22S, and the third substrate 21S and the fourth substrate 22S are substantially vertically disposed. However, in other embodiments, the third substrate 21S and the fourth substrate 22S may have a second predetermined included angle θ 2 between 80 degrees and 100 degrees, but the invention is not limited thereto.
In view of the above, referring to fig. 10 to 12, the second switch unit 23 may include a fifth switch element 231 electrically connected to the fifth reflective element 212, a sixth switch element 232 electrically connected to the sixth reflective element 213, a seventh switch element 233 electrically connected to the seventh reflective element 222, and an eighth switch element 234 electrically connected to the eighth reflective element 223. The fifth to eighth switching devices 231 to 234 may also be diodes or mosfets. In addition, the third control terminal P3 can be used for turning on the fifth switching element 231 and the seventh switching element 233, and the fourth control terminal P4 can be used for turning on the sixth switching element 232 and the eighth switching element 234. In addition, one of the third control terminal P3 and the fourth control terminal P4 can output a second dc signal.
Further, referring to fig. 10 to 12, for example, the third control terminal P3 may be electrically connected to the fifth reflective element 212 and the seventh reflective element 222, and the fourth control terminal P4 may be electrically connected to the sixth reflective element 213 and the eighth reflective element 223. Accordingly, the fifth reflective element 212 and the seventh reflective element 222 can simultaneously input the second dc signal, or the sixth reflective element 213 and the eighth reflective element 223 can simultaneously input the second dc signal. When the third control terminal P3 outputs the second dc signal, the third control terminal P3 can be used to turn on the fifth switch element 231 and the seventh switch element 233. When the fourth control terminal P4 outputs the second dc signal, the fourth control terminal P4 can be used to turn on the sixth switching element 232 and the eighth switching element 234. Therefore, the fifth reflective element 212 and the seventh reflective element 222 can be selectively turned on simultaneously or the sixth reflective element 213 and the eighth reflective element 223 can be turned on simultaneously, so as to control the radiation patterns of the third antenna 211 and the fourth antenna 221. In addition, when the third control terminal P3 turns on the fifth and seventh switching elements 231 and 233 and the switching circuit 4 selects the third polarized antenna 21 or the fourth polarized antenna 22, the radiation pattern of the second smart antenna 2 is oriented in a third direction (+ Y direction), and when the fourth control terminal P4 turns on the sixth and eighth switching elements 232 and 234 and the switching circuit 4 selects the third or fourth polarized antenna 21 or 22, the radiation pattern of the second smart antenna 2 is oriented in a fourth direction (-Y direction). With the embodiment of the present invention, the third direction and the fourth direction are opposite to each other. It should be noted that the radiation patterns in the third direction and the fourth direction generated by the second smart antenna 2 are preferably different from the radiation patterns in the first direction and the second direction generated by the first smart antenna 1. That is, the first direction (e.g., -X direction), the second direction (e.g., + X direction), the third direction (e.g., + Y direction), and the fourth direction (e.g., -Y direction) are different from each other. In addition, the first direction and the second direction are substantially perpendicular to the third direction and the fourth direction. In addition, for the embodiment of the present invention, the fifth, sixth, seventh and eighth switching elements 231 to 234 are each a diode as an example.
In view of the above, referring to fig. 10 to 12, the fifth reflective element 212 may include a ninth section 2121 and a tenth section 2122, and the diode 231 may be electrically connected between the ninth section and the tenth section. The sixth reflective element may include an eleventh segment 2131 and a twelfth segment 2132, and the diode 232 may be electrically connected between the eleventh segment 2131 and the twelfth segment 2132. The seventh reflective element 222 can include a thirteenth section 2221 and a fourteenth section 2222, and the diode 233 can be electrically connected between the thirteenth section 2221 and the fourteenth section 2222. The eighth reflective element 223 may include a fifteenth segment 2231 and a sixteenth segment 2232, and the diode 234 may be electrically connected between the fifteenth segment 2231 and the sixteenth segment 2232. The third control terminal P3 can be electrically connected to the ninth section 2121 of the fifth reflective element 212, the ninth section 2121 of the fifth reflective element 212 can be electrically connected to the anode of the diode 231, the cathode of the diode 231 is electrically connected to the tenth section 2122 of the fifth reflective element, the ninth section 2121 of the fifth reflective element 212 is electrically connected to the thirteenth section 2221 of the seventh reflective element 222, the thirteenth section 2221 of the seventh reflective element 222 is electrically connected to the anode of the diode 233, and the cathode of the diode 133 is electrically connected to the fourteenth section 2222 of the seventh reflective element 222. The fourth control terminal P4 is electrically connected to the eleventh segment 2131 of the sixth reflective element 213, the eleventh segment 2131 of the sixth reflective element 213 is electrically connected to the anode of the diode 232, the cathode of the diode 232 is electrically connected to the twelfth segment 2132 of the sixth reflective element 213, the eleventh segment 2131 of the sixth reflective element 213 is electrically connected to the fifteenth segment 2231 of the eighth reflective element 223, the fifteenth segment 2231 of the eighth reflective element 223 is electrically connected to the anode of the diode 234, and the cathode of the diode 234 is electrically connected to the sixteenth segment 2232 of the eighth reflective element.
Furthermore, as shown in fig. 10, the third antenna 211 may further include a fifth radiation portion 2111, a sixth radiation portion 2112 and a third feeding element 2113 for receiving a third rf signal, the third feeding element 2113 may have a third signal feeding end F5 and a third ground end F6, the third signal feeding end F5 may be electrically connected to the fifth radiation portion 2111, the third ground end F6 may be electrically connected to the sixth radiation portion 2112, and the sixth radiation portion 2112 is electrically connected to the tenth section 2122 of the fifth reflection element 212 and the twelfth section 2132 of the sixth reflection element 213. The fourth antenna 221 may further include a seventh radiation portion 2211, an eighth radiation portion 2212 and a fourth feeding element 2213 for receiving a fourth rf signal, the fourth feeding portion 2213 may have a fourth signal feeding end F7 and a fourth ground end F8, the fourth signal feeding end F7 may be electrically connected to the seventh radiation portion 2211, the fourth ground end F8 may be electrically connected to the eighth radiation portion 2212, and the eighth radiation portion 2212 is electrically connected to the fourteenth section 2212 of the seventh reflection element 222 and the sixteenth section 2232 of the eighth reflection element 222223. In addition, in fig. 10, the substitute symbol is used as a structure of the coaxial cable to indicate an electrical connection manner for signal transmission, but the invention is not limited thereto. In addition, as shown in fig. 10, the second smart antenna 2 may also include a fifth rf choke unit 24, a sixth rf choke unit 25, a seventh rf choke unit 26 and an eighth rf choke unit 27, which have functions and effects equivalent to those of the first rf choke unit 14, the second rf choke unit 15, the third rf choke unit 16 and the fourth rf choke unit 17, and are not described herein again. It should be noted that, although not shown in the drawings, the second smart antenna 2 is implemented on a substrate. However, the schematic diagram of the second smart antenna 2 implemented on a substrate is equivalent to that shown in fig. 2, and the difference is only the reference numeral.
Referring to fig. 11 and 12, it should be noted that the smart antenna apparatus a may further include a third reflective structure R3 and a fourth reflective structure R4. The third reflective structure R3 may be disposed on one side (e.g., above) of the fourth antenna 221, and the fourth reflective structure R4 may be disposed on the other side (e.g., below) of the fourth antenna 221. Thereby, the gain of the second smart antenna 2 of the smart antenna device a is adjusted and the radiation pattern is compressed.
Next, referring to fig. 13, fig. 13 is a schematic perspective view illustrating a first smart antenna and a second smart antenna of a smart antenna device according to an embodiment of the invention, which are disposed adjacent to each other. Thus, by providing the first smart antenna 1 and the second smart antenna 2 at the same time, the smart antenna apparatus a can generate radiation patterns in a first direction (e.g., -X direction), a second direction (e.g., + X direction), a third direction (e.g., + Y direction), and a fourth direction (e.g., -Y direction). For example, the first substrate 11S and the third substrate 21S are substantially parallel to each other, and the second substrate 12S and the fourth substrate 22S are substantially perpendicular to each other. In addition, in the embodiment of the present invention, the first substrate 11S and the third substrate 21S may be disposed on the same plane, that is, the first polarized antenna 11 and the third polarized antenna 21 are disposed in a coplanar manner. In addition, for example, the distance from a center point of symmetry of the first smart antenna 1 to a center point of symmetry of the second smart antenna 2 may be defined as an electrical length, which is a wavelength corresponding to the smart antenna apparatus a operating at a lowest operating frequency in an operating band.
Further, with the above-described substrate arrangement, the polarization direction of the first polarized antenna 11 is substantially orthogonal to the polarization direction of the second polarized antenna 12, and the polarization direction of the third polarized antenna 21 is substantially orthogonal to the polarization direction of the fourth polarized antenna 22. In addition, the polarization direction of first polarized antenna 11 is substantially the same as the polarization direction of third polarized antenna 21, and the polarization direction of second polarized antenna 12 is substantially the same as the polarization direction of fourth polarized antenna 22. In other words, in one embodiment, the first polarized antenna 11 and the third polarized antenna 21 can be horizontally polarized antennas, and the second polarized antenna 12 and the fourth polarized antenna 22 can be vertically polarized antennas.
Next, referring to fig. 14, fig. 14 is a functional block diagram of a smart antenna apparatus according to another embodiment of the present invention. Preferably, in the embodiment of the present invention, the smart antenna apparatus a may further include a radio frequency circuit 3 and a switching circuit 4, the radio frequency circuit 3 may be electrically connected to the switching circuit 4 to transmit a control signal to the switching circuit 4, and the switching circuit 4 may be electrically connected to the first polarized antenna 11, the second polarized antenna 12, the third polarized antenna 21 and the fourth polarized antenna 22. The switching circuit 4 can select one of the first polarized antenna 11 and the second polarized antenna 12 according to the control signal to transmit a first rf signal to the first polarized antenna 11 or transmit a second rf signal to the second polarized antenna 12. In addition, the switching circuit 4 can select one of the third polarized antenna 21 and the fourth polarized antenna 22 according to the control signal to transmit a third rf signal to the third polarized antenna 21 or transmit a fourth rf signal to the fourth polarized antenna 22. In addition, the radio frequency circuit 3 may be electrically connected to the first smart antenna 1 to transmit the first dc signal to one of the first control terminal P1 and the second control terminal P2, and meanwhile, the radio frequency circuit 3 may also be electrically connected to the second smart antenna 2 to transmit the second dc signal to one of the third control terminal P3 and the fourth control terminal P4.
In addition, in other embodiments, when the third antenna 211 and the fourth antenna 221 of the second smart antenna 2 have more than two operating frequency bands, the smart antenna apparatus a shown in fig. 14 may further include a duplexer (not shown), for example, the duplexer 5 may be electrically connected between the switching circuit 4 and the first smart antenna 1 and the second smart antenna 2, and the duplexer 5 may switch the operating frequency bands of the first smart antenna 1 and the second smart antenna 2 according to the control signal. Therefore, a control signal is provided by the rf circuit 3, the selection of the polarization direction is performed by the switching circuit 4, and the first smart antenna 1 and the second smart antenna 2 are excited by the duplexer 5 corresponding to the control signal. Further, the radiation pattern direction of the smart antenna apparatus a can be selected by inputting the first dc signal and the second dc signal.
Next, please refer to fig. 1, fig. 10, fig. 13, and fig. 14, and also refer to fig. 15A to fig. 16B, in which fig. 15A is a schematic diagram of a radiation field pattern of the first polarized antenna, fig. 15B is a schematic diagram of a radiation field pattern of the second polarized antenna, fig. 16A is a schematic diagram of a radiation field pattern of the third polarized antenna, and fig. 16B is a schematic diagram of a radiation field pattern of the fourth polarized antenna. When the first to fourth switching elements 131 to 134 are not turned on, the switching circuit 4 may select one of the first polarized antenna 11 and the second polarized antenna 12 according to the control signal from the rf circuit 3 to transmit a first rf signal to the first polarized antenna 11 or transmit a second rf signal to the second polarized antenna 12, and a radiation pattern of one of the first polarized antenna 11 and the second polarized antenna 12 may be omnidirectional radiation. For example, as shown in FIG. 15A and FIG. 15B, the first polarized antenna 11 can generate the omni-directional radiation pattern of H1-omni segment, and the second polarized antenna 12 can generate the omni-directional radiation pattern of V1-omni segment.
As described above, referring to fig. 1, 10, and 13 to 16B, when the first control terminal P1 turns on the first switch element 131 and the third switch element 133 and the switching circuit 4 selects the first polarized antenna 11 or the second polarized antenna 12, the radiation pattern of the first smart antenna 1 can be oriented in the first direction (e.g., -X direction), for example, as shown in fig. 15A and 15B, the first polarized antenna 11 can generate a radiation pattern of H1-Dir1 segment, and the second polarized antenna 12 can generate a radiation pattern of V1-Dir1 segment. In addition, when the second control terminal P2 turns on the second switch element 132 and the fourth switch element 134 and the switching circuit 4 selects the first polarized antenna 11 or the second polarized antenna 12, the radiation pattern of the first smart antenna 1 can be oriented to a second direction (e.g., + X direction). For example, as shown in fig. 15A and 15B, the first polarized antenna 11 can generate a radiation pattern of H1-Dir2 segments, and the second polarized antenna 12 can generate a radiation pattern of V1-Dir2 segments.
In view of the above, referring to fig. 1, 10, and 13 to 16B, when none of the fifth switch element 231, the sixth switch element 232, the seventh switch element 233, and the eighth switch element 234 is turned on, the switching circuit 4 may select one of the third polarized antenna 21 and the fourth polarized antenna 22 according to the control signal from the rf circuit 3, so as to transmit a third rf signal to the third polarized antenna 21 or transmit a fourth rf signal to the fourth polarized antenna 22, and a radiation field type of one of the third polarized antenna 21 and the fourth polarized antenna 22 may be omnidirectional radiation. For example, as shown in FIGS. 16A and 16B, the third polarized antenna 21 can generate an omni-directional radiation pattern of H2-omni segment, and the fourth polarized antenna 22 can generate an omni-directional radiation pattern of V2-omni segment.
As described above, referring to fig. 1, 10, and 13 to 16B, when the fifth switch element 231 and the seventh switch element 233 are turned on by the third control terminal P3 and the switching circuit 4 selects the third polarized antenna 21 or the fourth polarized antenna 22, the radiation field pattern of the second smart antenna 2 is oriented in a third direction (e.g., + Y direction), for example, as shown in fig. 16A and 16B, the third polarized antenna 21 can generate a radiation field pattern of H2-Dir1 segments, and the fourth polarized antenna 22 can generate a radiation field pattern of V2-Dir1 segments. In addition, when the fourth control terminal P4 turns on the sixth and eighth switching elements 232 and 234 and the switching circuit 4 selects the third polarized antenna 21 or the fourth polarized antenna 22, the radiation pattern of the second smart antenna 2 is oriented in a fourth direction (e.g., -Y direction), for example, as shown in fig. 16A and 16B, the third polarized antenna 21 can generate the radiation pattern of H2-Dir2 segment, and the fourth polarized antenna 22 can generate the radiation pattern of V2-Dir2 segment.
Accordingly, as can be understood from the radiation pattern diagrams of fig. 15A to 16B, not only the polarization direction of the smart antenna device a can be selected by the arrangement of the first smart antenna 1 and the second smart antenna 2, but also four radiation patterns in different directions can be generated by the first smart antenna 1 and the second smart antenna 2. In other words, in one embodiment, the first smart antenna 1 can generate a horizontal polarization direction, and the second smart antenna 2 can generate a vertical polarization direction; or the first smart antenna 1 can generate a vertical polarization direction and the second smart antenna 2 can generate a horizontal polarization direction; or the first smart antenna 1 can generate a horizontal polarization direction, and the second smart antenna 2 can generate a horizontal polarization direction; alternatively, the first smart antenna 1 may produce a vertical polarization direction and the second smart antenna 2 may produce a vertical polarization direction. In addition, the radiation pattern of the smart antenna apparatus a can be adjusted to be oriented to a first direction (e.g., -X direction), a second direction (e.g., + X direction), a third direction (e.g., + Y direction), or a fourth direction (e.g., -Y direction) according to the requirement.
In view of the above, referring to fig. 15A and fig. 16A, when the first smart antenna 1 selects the first polarized antenna 11 (e.g., a horizontally polarized antenna) and the second smart antenna 2 selects the third polarized antenna 21 (e.g., a horizontally polarized antenna), the radiation field patterns with similar field patterns and oriented in four different directions (the first direction, the second direction, the third direction and the fourth direction) can be generated by the output of the dc signals from the first to fourth control terminals P1 to P4. Therefore, when the user device transmits and receives signals in the first to fourth directions, the user can have the same use feeling. In addition, referring to fig. 15B and fig. 16B, when the first smart antenna 1 selects the second polarized antenna 12 (e.g., a vertically polarized antenna) and the second smart antenna 2 selects the fourth polarized antenna 22 (e.g., a vertically polarized antenna), the radiation field patterns with similar shapes and facing four different directions can be generated by the output of the dc signals from the first to fourth control terminals P1 to P4. In other words, the smart antenna apparatus a provided in the embodiment of the present invention can generate not only four radiation field patterns in different directions in the same polarization direction, but also radiation field patterns in different directions in different polarization directions.
[ advantageous effects of the embodiments ]
One of the advantages of the present invention is that the smart antenna apparatus a according to the embodiment of the present invention can achieve the effect of changing the radiation field of the smart antenna apparatus a by using the technical scheme that the first control terminal P1 is used for turning on the first switching element 131 and the third switching element 133, and the second control terminal P2 is used for turning on the second switching element 132 and the fourth switching element 134. That is, the first control terminal P1 and the second control terminal P2 can be used to adjust the radiation patterns of the smart antenna device a in two different directions. Therefore, the smart antenna device a provided by the embodiment of the invention is an antenna structure having at least omnidirectional radiation and two directional radiations.
Furthermore, the smart antenna apparatus a according to the embodiment of the present invention can also use the technical scheme that the switching circuit 4 selects one of the first polarized antenna 11 and the second polarized antenna 12 according to a control signal to transmit a first rf signal to the first polarized antenna 11 or transmit a second rf signal to the second polarized antenna 12, so as to achieve the effect of switching the polarization direction of the smart antenna apparatus a. That is, the horizontally polarized antenna or the vertically polarized antenna can be selected according to the requirement, so as to achieve the characteristic of multiple-input multiple-output (MIMO).
Furthermore, the smart antenna apparatus a according to the embodiment of the present invention can also generate four radiation patterns in different directions by further disposing the second smart antenna 2. Meanwhile, the switching circuit 4 can be further arranged to switch the polarization direction of the intelligent antenna device A. That is, in one embodiment, the polarization direction of the smart antenna device a can be selected first, and then the radiation pattern direction of the smart antenna device a can be switched according to the requirement to cover all radiation directions.
Furthermore, since the first polarized antenna 11 is disposed on the first substrate 11S and the second polarized antenna 12 is disposed on the second substrate 12S, the smart antenna device a provided in the embodiment of the invention can be arbitrarily disposed at a desired position according to the requirement. In other words, by disposing the first switch element 131, the second switch element 132, the third switch element 133, the fourth switch element 134, the first control terminal P1 and the second control terminal P2 on the first substrate 11S and the second substrate 12S and using the feeding lines of the first coaxial cable 1113 'and the second coaxial cable 1213', the smart antenna apparatus a can be easily disposed at any desired (or possible) position of the wireless communication apparatus, thereby improving the flexibility of product design and use.
The disclosure above is only a preferred embodiment of the present invention, and is not intended to limit the claims, so that all technical equivalents that can be made by using the disclosure of the present invention and the accompanying drawings are included in the claims.

Claims (12)

1. A smart antenna assembly, the smart antenna assembly comprising:
a first smart antenna, the first smart antenna comprising:
a first polarized antenna, the first polarized antenna comprising a first antenna, a first reflective element disposed on a first side of the first antenna, and a second reflective element disposed on a second side of the first antenna;
a second polarized antenna, the second polarized antenna comprising a second antenna, a third reflective element disposed on a third side of the second antenna, and a fourth reflective element disposed on a fourth side of the second antenna;
a first switch unit, including a first switch element electrically connected to the first reflective element, a second switch element electrically connected to the second reflective element, a third switch element electrically connected to the third reflective element, and a fourth switch element electrically connected to the fourth reflective element;
a first control terminal electrically connected to the first reflective element, and the first reflective element electrically connected to the third reflective element for turning on the first switch element and the third switch element, wherein when the first control terminal turns on the first switch element and the third switch element, the radiation field pattern of the first smart antenna faces a first direction; and
and a second control terminal electrically connected to the second reflective element and the second reflective element for turning on the second switch element and the fourth switch element, wherein when the second control terminal turns on the second switch element and the fourth switch element, the radiation pattern of the first smart antenna faces a second direction, and the first direction and the second direction are opposite to each other.
2. A smart antenna assembly as recited in claim 1, further comprising: the antenna comprises a first substrate and a second substrate, wherein the first polarized antenna is arranged on the first substrate, the second polarized antenna is arranged on the second substrate, and the first substrate and the second substrate are arranged substantially vertically.
3. A smart antenna assembly according to claim 1, wherein the first reflective element comprises a first segment and a second segment, the first switch element being electrically connected between the first segment and the second segment; the second reflecting element comprises a third section and a fourth section, and the second switch element is electrically connected between the third section and the fourth section; the third reflective element comprises a fifth section and a sixth section, and the third switching element is electrically connected between the fifth section and the sixth section; the fourth reflective element comprises a seventh section and an eighth section, and the fourth switching element is electrically connected between the seventh section and the eighth section; the first control terminal is electrically connected to the first segment of the first reflective element, the first segment of the first reflective element is electrically connected to the anode of the first switching element, the cathode of the first switching element is electrically connected to the second segment of the first reflective element, the first segment of the first reflective element is electrically connected to the fifth segment of the third reflective element, the fifth segment of the third reflective element is electrically connected to the anode of the third switching element, and the cathode of the third switching element is electrically connected to the sixth segment of the third reflective element; the second control end is electrically connected to the third segment of the second reflective element, the third segment of the second reflective element is electrically connected to the anode of the second switching element, the cathode of the second switching element is electrically connected to the fourth segment of the second reflective element, the third segment of the second reflective element is electrically connected to the seventh segment of the fourth reflective element, the seventh segment of the fourth reflective element is electrically connected to the anode of the fourth switching element, and the cathode of the fourth switching element is electrically connected to the eighth segment of the fourth reflective element.
4. A smart antenna device as recited in claim 3, wherein the first antenna further comprises a first radiating portion, a second radiating portion and a first feeding element for receiving a first rf signal, the first feeding element is disposed between the first radiating portion and the second radiating portion, and the second radiating portion is electrically connected to the second segment of the first reflecting element and the fourth segment of the second reflecting element; the second antenna further includes a third radiation portion, a fourth radiation portion, and a second feeding element for receiving a second rf signal, the second feeding element is disposed between the third radiation portion and the fourth radiation portion, and the fourth radiation portion is electrically connected to the sixth section of the third reflection element and the eighth section of the fourth reflection element.
5. A smart antenna assembly as recited in claim 1, further comprising: a second smart antenna, including a third polarized antenna, a fourth polarized antenna, a second switch unit, a third control terminal and a fourth control terminal, wherein the third polarized antenna includes a third antenna, a fifth reflecting element disposed at a fifth side of the third antenna and a sixth reflecting element disposed at a sixth side of the third antenna, wherein the fourth polarized antenna includes a fourth antenna, a seventh reflecting element disposed at a seventh side of the fourth antenna and an eighth reflecting element disposed at an eighth side of the fourth antenna; the second switch unit comprises a fifth switch element electrically connected to the fifth reflecting element, a sixth switch element electrically connected to the sixth reflecting element, a seventh switch element electrically connected to the seventh reflecting element, and an eighth switch element electrically connected to the eighth reflecting element; the third control end is used for conducting the fifth switching element and the seventh switching element, and the fourth control end is used for conducting the sixth switching element and the eighth switching element.
6. The smart antenna device as recited in claim 5, wherein one of the first control terminal and the second control terminal outputs a first DC signal, and one of the third control terminal and the fourth control terminal outputs a second DC signal.
7. A smart antenna assembly as recited in claim 6, further comprising: the antenna comprises a radio frequency circuit and a switching circuit, wherein the radio frequency circuit is electrically connected to the switching circuit to transmit a control signal to the switching circuit, the switching circuit is electrically connected to the first polarized antenna, the second polarized antenna, the third polarized antenna and the fourth polarized antenna, the switching circuit selects one of the first polarized antenna and the second polarized antenna according to the control signal to transmit a first radio frequency signal to the first polarized antenna or transmit a second radio frequency signal to the second polarized antenna, and the switching circuit selects one of the third polarized antenna and the fourth polarized antenna according to the control signal to transmit a third radio frequency signal to the third polarized antenna or transmit a fourth radio frequency signal to the fourth polarized antenna.
8. A smart antenna assembly as recited in claim 5, further comprising: the antenna comprises a first substrate, a second substrate, a third substrate and a fourth substrate, wherein the first polarized antenna is arranged on the first substrate, the second polarized antenna is arranged on the second substrate, the third polarized antenna is arranged on the third substrate, and the fourth polarized antenna is arranged on the fourth substrate; the first substrate and the second substrate are substantially vertically arranged, the third substrate and the fourth substrate are substantially vertically arranged, the first substrate and the third substrate are substantially parallel arranged, and the second substrate and the fourth substrate are substantially vertically arranged.
9. A smart antenna device according to claim 5, wherein the polarization direction of the first polarized antenna is substantially orthogonal to the polarization direction of the second polarized antenna, and the polarization direction of the third polarized antenna is substantially orthogonal to the polarization direction of the fourth polarized antenna; the first polarized antenna and the third polarized antenna have substantially the same polarization direction, and the second polarized antenna and the fourth polarized antenna have substantially the same polarization direction.
10. A smart antenna device according to claim 5, wherein a distance from a center point of symmetry of the first smart antenna to a center point of symmetry of the second smart antenna defines an electrical length, the electrical length being a wavelength corresponding to a lowest operating frequency of the smart antenna device operating in an operating band.
11. The smart antenna apparatus according to claim 5, further comprising a switching circuit electrically connected to the first polarized antenna, the second polarized antenna, the third polarized antenna and the fourth polarized antenna, wherein when the first control terminal turns on the first switch element and the third switch element and the switching circuit selects the first polarized antenna or the second polarized antenna, the radiation field pattern of the first smart antenna is oriented in the first direction, when the second control terminal turns on the second switch element and the fourth switch element and the switching circuit selects the first polarized antenna or the second polarized antenna, the radiation field pattern of the first smart antenna is oriented in the second direction, when the third control terminal turns on the fifth switch element and the seventh switch element and the switching circuit selects the third polarized antenna or the fourth polarized antenna, the radiation pattern of the second smart antenna faces a third direction, and when the sixth switching element and the eighth switching element are turned on by the fourth control terminal and the third polarized antenna or the fourth polarized antenna is selected by the switching circuit, the radiation pattern of the second smart antenna faces a fourth direction, wherein the first direction, the second direction, the third direction and the fourth direction are different from each other.
12. A smart antenna device according to claim 1, wherein the first polarized antenna and the second polarized antenna both support a first operating frequency band and a second operating frequency band, the first operating frequency band having a center frequency higher than the center frequency of the second operating frequency band; the distance between the first reflecting element and the first antenna is between one eighth and one quarter of the wavelength corresponding to the central frequency of the first operating frequency band of the first antenna, the distance between the second reflecting element and the first antenna is between one eighth and one quarter of the wavelength corresponding to the central frequency of the first operating frequency band of the first antenna, the distance between the third reflecting element and the second antenna is between one eighth and one quarter of the wavelength corresponding to the central frequency of the first operating frequency band of the second antenna, and the distance between the fourth reflecting element and the second antenna is between one eighth and one quarter of the wavelength corresponding to the central frequency of the first operating frequency band of the second antenna.
CN201810220813.XA 2018-03-16 2018-03-16 Intelligent antenna device Active CN110277651B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810220813.XA CN110277651B (en) 2018-03-16 2018-03-16 Intelligent antenna device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810220813.XA CN110277651B (en) 2018-03-16 2018-03-16 Intelligent antenna device

Publications (2)

Publication Number Publication Date
CN110277651A CN110277651A (en) 2019-09-24
CN110277651B true CN110277651B (en) 2021-01-01

Family

ID=67958939

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810220813.XA Active CN110277651B (en) 2018-03-16 2018-03-16 Intelligent antenna device

Country Status (1)

Country Link
CN (1) CN110277651B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115911867A (en) * 2021-08-13 2023-04-04 中兴通讯股份有限公司 Reconfigurable antenna, control method thereof, router and signal transceiving equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002299952A (en) * 2001-01-24 2002-10-11 Atr Adaptive Communications Res Lab Array antenna, its measuring method and method for measuring antenna device
WO2010073429A1 (en) * 2008-12-26 2010-07-01 パナソニック株式会社 Array antenna device
CN102800965A (en) * 2012-07-23 2012-11-28 电子科技大学 Broadband wide beam dual-polarization dipole antenna
CN102800956B (en) * 2012-08-18 2016-08-03 哈尔滨工业大学（威海） The broadband dual polarized antenna of integrated balun feed
US10439684B2 (en) * 2012-12-31 2019-10-08 Futurewei Technologies, Inc. Smart antenna platform for indoor wireless local area networks
CN104660309A (en) * 2013-11-15 2015-05-27 智捷科技股份有限公司 Intelligent antenna device and method for switching radiation patterns thereof

Also Published As

Publication number Publication date
CN110277651A (en) 2019-09-24

Similar Documents

Publication Publication Date Title
US10224622B2 (en) Antennas including dual radiating elements for wireless electronic devices
EP1307942B1 (en) Antenna device
TWI671951B (en) Smart antenna device
US7760150B2 (en) Antenna assembly and wireless unit employing it
US7557761B2 (en) Array antenna apparatus having at least two feeding elements and operable in multiple frequency bands
EP1506594B1 (en) Antenna arrangement and module including the arrangement
EP0829110B1 (en) Printed monopole antenna
US7576698B2 (en) Dual-band antenna
US8797224B2 (en) Array antenna apparatus including multiple steerable antennas and capable of eliminating influence of surrounding metal components
EP2290746B1 (en) Planar antenna with isotropic radiation pattern
US10461422B1 (en) Balanced antenna
US20100289713A1 (en) Slot antenna
JP2010199859A (en) Antenna, radiating pattern switching method therefor and wireless communication apparatus
US9509062B2 (en) Alford loop antennas with parasitic elements
US20110279344A1 (en) Radio frequency patch antennas for wireless communications
CN107919525B (en) Antenna system
CN111987431B (en) Antenna structure and electronic device
KR100697537B1 (en) Mimo wireless communication terminal including multiple inverted l-type antennas
CN113451788B (en) Antenna, antenna module and wireless network equipment
CN109390682B (en) Super antenna
CN110277651B (en) Intelligent antenna device
CN106159420B (en) A kind of antenna structure and wireless device
US20240014548A1 (en) Highly isolated and barely separated antennas integrated with noise free RF-transparent Printed Circuit Board (PCB) for enhanced radiated sensitivity
CN117060083A (en) Multi-antenna module system
CN106972272B (en) Antenna system and mobile terminal

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant