TWI459633B - Multiband high gain omnidirectional antennas - Google Patents

Description

Multi-band high gain omnidirectional antenna

The present disclosure is directed to a multi-band, high gain omnidirectional antenna.

Cross-references to related applications

This application claims the benefit of the filing of the Malaysian Patent Application No. JP 20090004, filed on Jan. 2, 2008. The entire disclosure of the aforementioned application is incorporated herein by reference.

This paragraph provides background information that is not necessarily relevant to the present disclosure of the prior art.

Omnidirectional antennas can be used in a variety of wireless communication devices because the radiation pattern allows for good transmission and reception from a mobile unit. Sometimes an omnidirectional antenna using a printed circuit board is used. In general, an omnidirectional antenna is an antenna that typically radiates power uniformly in a plane and has a directional pattern in a vertical plane, where the pattern is often described as a "doughnut shape."

This paragraph is a summary of one of the present disclosure and is not a comprehensive disclosure of all or all of its features.

According to various aspects, an exemplary embodiment provides a multi-band, high gain omnidirectional antenna. In an exemplary embodiment, an antenna typically includes first and second radiating elements. The first radiating element is configured to generate a first radiation pattern at a first operating frequency. The second radiating element is configured to generate a second radiation pattern at a second operating frequency. The first radiating element and the second radiating element each comprise a turn or a helix. The turns or spirals are typically arranged between the straight portions of a radiating element. A connecting element is connectable to the first radiating element and the second radiating element.

In another exemplary embodiment, a multi-band high gain omnidirectional antenna typically includes a first radiating element operative to generate a first radiation pattern at a first operating frequency. The first radiating element includes at least one crotch disposed between a λ/4 radiating portion and a λ/2 radiating portion, wherein λ is a first signal at a wavelength of the first operating frequency. The multi-band high gain omnidirectional antenna system also includes a second radiating element operative to generate a second radiation pattern at a second operating frequency. The second radiating element includes at least one crotch disposed between a λ/4 radiating portion and a λ/2 radiating portion, wherein λ is a second signal at a wavelength of the second operating frequency.

In yet another exemplary embodiment, a multi-band, high-gain omnidirectional antenna typically includes a substrate having a radiating portion and a power feed. At least one power dissipation element is coupled to the power feed of the substrate. A first radiating element is coupled to the radiating portion of the substrate. The first radiating element is operable to generate a first radiation pattern at a first operating frequency. The first radiating element includes at least one crotch disposed between a λ/4 radiating portion and a λ/2 radiating portion, wherein λ is a first signal at a wavelength of the first operating frequency. A second radiating element is also coupled to the radiating portion of the substrate. The second radiating element is operable to generate a second radiation pattern at a second operating frequency. The second radiating element includes at least one crotch disposed between a λ/4 radiating portion and a λ/2 radiating portion, wherein λ is a second signal at a wavelength of the second operating frequency. A connecting element is coupled to the first radiating element and the λ/4 radiating portion of the second radiating element. The first radiating element and the second radiating element. The first radiating element and the second radiating element are laterally spaced apart and extend substantially perpendicularly from the connecting element in the same direction.

Another exemplary embodiment of a multi-band, high-gain omnidirectional antenna typically includes a first radiating element and a second radiating element, and the like includes conductive lines. The first radiating element is operable to generate a first radiation pattern at a first operating frequency. The first radiating element includes at least one spiral disposed between a λ/4 radiating portion and a λ/2 radiating portion, wherein λ is a first signal at a wavelength of the first operating frequency. The second radiating element is operable to generate a second radiation pattern at a second operating frequency. The second radiating element includes at least one spiral disposed between a λ/4 radiating portion and a λ/2 radiating portion, wherein λ is a second signal at a wavelength of the second operating frequency. A connecting element is coupled to the first radiating element and the λ/4 radiating portion of the second radiating element. The first radiating element and the second radiating element. The first radiating element and the second radiating element are laterally spaced apart and extend substantially perpendicularly from the connecting element in the same direction. Further application areas will be more apparent from the description provided herein. It is to be understood that the description and the specific embodiments are intended to

In the following description, numerous specific details are set forth, such as the specific elements, elements, and methods of the present invention, in order to provide a complete understanding of the various embodiments of the present disclosure. It will be apparent to those skilled in the art that the specific details are not necessarily utilized and should not be construed as limiting the scope of the disclosure. In the development of any practical implementation, the decision making of a particular embodiment must be made to achieve a developer's specific goals, such as compliance with system-related and industry-related restrictions. The effectiveness of this development may be complex and time consuming, but it is still a matter of design, processing, and manufacturing for those skilled in the art.

In accordance with the present disclosure, the antenna disclosed herein has a higher gain that is omnidirectional in multiple frequency bands (eg, one of the first frequency bandwidths of 2.4 GHz to 2.5 GHz, and one of 4.9 GHz to 5.875 GHz). Two frequency bandwidth). In the rule of thumb, a collinear array can achieve a gain of between about 5 dBi and about 6 dBi. The exemplary embodiments disclosed herein include antennas that are capable of operating on more frequency bands and having a higher gain.

1A illustrates a multi-band, high gain omnidirectional antenna 100 for use in one or more of the present disclosure. As shown, the multi-band high gain omnidirectional antenna 100 includes radiating elements 102, 104 and a connecting element 106 for connecting the radiating elements 102, 104. The radiating element 102 is configured to generate a first radiation pattern of one of the first frequencies (eg, a frequency within a first frequency bandwidth of one of 2.4 GHz to 2.5 GHz), and the radiating element 104 is The configuration is to generate a second radiation pattern of one of the second frequencies (eg, a frequency within a second frequency bandwidth of one of 4.9 GHz to 5.875 GHz). The first radiating element 102 includes first and second straight portions 108, 112 (which may also be referred to as upper and lower radiating elements, respectively) with a curved or crotch portion 116 therebetween. The second radiating element 104 includes first and second straight portions 110, 114 (which may also be referred to as lower and upper radiating elements, respectively) with a curved or crotch portion 118 therebetween. In this particular example, each of the radiating elements 102, 104 includes two straight portions with a crotch therebetween. The crotch portion 116 of the first radiating element 102 includes nine bending points 117, and the crotch portion 118 of the second radiating element 104 includes five bending points 119. During operation, the jaws 116, 118 are operable to be opposite in phase and matched. Alternative embodiments may include one or more radiating elements having more than or less than two straight portions, more than one crotch portion, and/or more or less than a bending point as shown in FIG. One of the different configurations (eg tilt, zigzag, etc.).

With continued reference to FIG. 1A, the multi-band high gain omnidirectional antenna 100 also includes power dissipating elements 122, 124, 126. The power dissipating elements 122, 124, 126 reduce the impact of a power feed on the first radiation pattern and the second radiation pattern. The power dissipating elements 122, 124, 126 can have the same length and/or width, or the power dissipating elements 122, 124, 126 can have different lengths and/or widths as shown in FIG. 1A. For example, FIG. 6 illustrates exemplary dimensions of the length and/or width of power dissipating elements 122, 124, 126 in millimeters in accordance with an exemplary embodiment, wherein the dimensions are provided for illustrative purposes only and not as Limit the purpose. As shown in FIG. 6, the respective lengths of the power dissipating elements 122, 124, 126 (FIG. 1A) can have about 19 mm, 22 mm, and 13 mm, and their respective widths can have approximately 2 mm, 5 mm, and 2 mm. Referring to Figures 1 and 8, each of the power dissipating elements 122, 124 (Figure 1A) can have a length of λ/4 (as shown in Figure 8). In this example, the power dissipation component 122 can have a length of λ/4, wherein λ is a first signal at a wavelength of the first operating frequency (such as within a frequency bandwidth of 2.4 GHz to 2.5 GHz), The power dissipating component 126 can have a length of λ/4, wherein λ is a second signal at a wavelength of the second operating frequency (such as in a frequency bandwidth of 4.9 GHz to 5.875 GHz). Although FIG. 1A shows three power dissipating elements, other embodiments may include more or less than three power dissipating elements and/or dissipating elements having different configurations (eg, shape, size, position, etc.).

As also shown in FIG. 1A, the multi-band high gain omnidirectional antenna 100 includes a substrate 120 that supports the radiating elements 102, 104. For illustrative purposes, the substrate 120 can be considered to have a radiating portion 128 and a power feed portion 130. The radiating elements 102, 104 are located in the radiating portion 128 such that the first radiating element 102 and the second radiating element 104 are laterally spaced from one another on the plate 120. The first radiating element 102 and the second radiating element 104 are generally extending perpendicularly from the connecting element 106 in the same direction (eg, upward in FIG. 1A). The power dissipating elements 122, 124, 126 are located in the power feed 130. The substrate 120 can be made from several different materials. In various exemplary embodiments, the substrate 120 comprises a flexible material or a dielectric or non-conductive printed circuit board material. In embodiments in which the substrate 120 is fabricated from a relatively flexible material, the multi-band high gain omnidirectional antenna 100 can be flexed or configured such that it conforms to the shape or shape of the antenna housing. For example, having a flexible substrate 120 allows the multi-band high gain omnidirectional antenna 100 to be flexed or configured into a generally cylindrical shape (or at least a portion thereof) such that as the multi-band is accommodated therein The shape or shape of the cylindrical antenna housing of one of the gain omnidirectional antennas 100. The substrate 120 can be formed from materials having low loss and dielectric properties. According to some embodiments, the substrate 120 is a printed circuit board. In such embodiments, the radiating elements 102, 104 can be routed to the printed circuit board. When the different frequencies and dielectric constants of the substrate can be used to tune the frequencies, the substrate 120 can be designed in different sizes depending on, for example, the particular application. For example, FIG. 7 illustrates exemplary dimensions of a substrate 20 in millimeters in accordance with an exemplary embodiment, which are provided for illustrative purposes only and not for purposes of limitation. As shown in Figure 7, the substrate 20 can have a length of about 132 mm, a width of about 21 mm, and a thickness of about .80 mm. Alternative embodiments may include one of a substrate having a different configuration (eg, different shapes, sizes, materials, etc.). Still other embodiments do not necessarily include a printed circuit board material such as antenna 200 shown in Figure 9 and described below.

In an exemplary embodiment, the radiating elements 102, 104 can have a length as shown in Figures 6, 7, and/or 8. In this regard, Figures 6, 7, and 8 illustrate exemplary dimensions of the radiating elements 102, 104 in accordance with the exemplary embodiments, which are provided for illustrative purposes only and not for purposes of limitation. As shown in Figure 6, the radiating elements 102, 104 can each have a length of 103 mm and 43 mm. As also shown in FIG. 6, the first and second straight portions 108, 112 of the first radiating element can each have a length of about 23 mm and 66 mm, respectively, and the first and second straight portions of the second radiating element The sections 110, 114 can each have a length of approximately 8 mm and 23 mm. Referring to Figures 1 and 8, the first and second straight portions 108, 112 (Figure 1) of the first radiating element can be configured as λ/4 and λ/2 radiating elements (as shown in Figure 8), Wherein λ is a first signal at a wavelength of the first operating frequency (such as within a frequency bandwidth of 2.4 GHz to 2.5 GHz). The first and second straight portions 110, 114 (FIG. 1) of the second radiating element can be configured as λ/4 and λ/2 radiating elements (as shown in FIG. 8), wherein λ is a second The signal is at a wavelength of the second operating frequency (such as within a frequency bandwidth of 4.9 GHz to 5.875 GHz). As will be appreciated by those of ordinary skill in reading this disclosure, the operating frequency band can be varied by varying the length of the radiating element 102 (and the length of its first and/or second straight portions 108, 112), the radiating element 104. The length (in combination with the length of its first and/or second straight portions 110, 114), or a combination thereof, is tuned. Although two radiating elements 102, 104 are shown, more or less than two radiating elements 102, 104 are possible. Varying the thickness and dielectric constant of the substrate can also be used to tune the above frequencies.

The radiating elements 102, 104 and the power dissipating elements 122, 124, 126 can be made of a metallic material such as, for example, copper, silver, gold, alloys, combinations of the foregoing, other electrically conductive materials, and the like. Moreover, the radiating elements 102, 104 and the power dissipating elements 122, 124, 126 can be made of the same or different materials. Still further, the radiating element 102 can be made of a different material than the material from which the radiating element 104 is formed. Similarly, the power dissipating elements 122, 124, 126 can be made of the same material, different materials, or some combination of the foregoing.

FIG. 1B illustrates a multi-band high gain omnidirectional antenna 100 having a power feed line 132 attached thereto. The power feeder 132 supplies power to the multi-band high gain omnidirectional antenna 100. In the example shown in FIG. 1B, the power feeder 132 is a coaxial cable conductor. However, alternative embodiments may include any other suitable type of power feed structure known in the art.

With continued reference to FIG. 1B, the power feed line 132 has a center conductor 134 and an outer jacket 136. The center conductor 134 is attached to the connection element 106 to supply power to the radiating elements 102, 104. The outer jacket 136 is coupled to the power dissipating elements 122, 124, 126 to dissipate power from the outer jacket 136. Depending on the event, the power feed line 132 can be attached to the length of the power dissipation element 124 or attached directly to the substrate 20 to provide, for example, additional length and/or reinforcement to the power feed line 132. Generally, such connections can be made using soldered connections, but other types of connections are possible, such as, for example, a mating connection, a press-fit connection, or other similar connection.

2 is an exemplary graph of voltage standing wave ratio (VSWR) versus frequency from 2 GHz to 6 GHz for the exemplary multi-band high gain omnidirectional antenna 100 shown in FIG. 1A. The data depicted in this graph (Fig. 2) typically demonstrates the relatively satisfactory and well matched performance of the multiband high gain omnidirectional antenna 100. This performance will depend, at least in part, on the material of the printed circuit board. For the information shown in Figure 2, the material of the printed circuit board is Rogers.

Figure 2B is a table of voltage standing wave ratios at a plurality of specific data points taken from the graph of Figure 2A (i.e., a particular frequency). Through the background art, a voltage standing wave ratio can be used to indicate the reception quality of an antenna. The voltage standing wave ratio indicates the interference caused by the reflected wave and acts as an indicator that the reflected wave backflushes back and forth within one of the transmission lines of the assembly. In theory, a 1:1 voltage standing wave ratio represents a perfectly matched antenna component. In practice, however, a 2:1 voltage standing wave ratio is typically acceptable. The higher voltage standing wave ratio indicates a decrease in signal reception by an antenna component.

3 is an exemplary radiation pattern for illustrating the gain of the exemplary multi-band high gain omnidirectional antenna 100 of FIG. 1A at a frequency of 2.45 GHz (in terms of decibels in reference isotropic gain (dBi)). In this example, the multi-band high gain omnidirectional antenna 100 has a maximum or peak gain of about 5.1 dBi, an average gain of about 2.8 dBi, and a maximum angle of about 127.9 degrees. The information depicted in FIG. 3 generally shows the higher peak gain and smaller actual size achieved by the multi-band high gain omnidirectional antenna 100 when it is omnidirectional at 2.45 GHz. This performance will depend, at least in part, on the material of the printed circuit board. For the information shown in Figure 3, the material of the printed circuit board is Rogers. With continued reference to Figure 3, "Free Az" refers to the measurement of the antenna in free space and its position is Azimuth, while "Total Field (V+H)" refers to the field of vertical polarization and horizontal polarization.

4 is an exemplary radiation pattern for illustrating the gain of the exemplary multi-band high gain omnidirectional antenna 100 of FIG. 1A at a frequency of 4.9 GHz (in terms of decibels in reference isotropic gain (dBi)). In this example, the multi-band high gain omnidirectional antenna 100 has a maximum or peak gain of approximately 4.6 dBi, an average gain of approximately 3.1 dBi, and a maximum angle of approximately 190.0 degrees. The information depicted in FIG. 4 generally shows the higher peak gain and smaller actual size achieved by the multi-band high gain omnidirectional antenna 100 at 4.9 GHz omnidirectional. This performance will depend, at least in part, on the material of the printed circuit board. For the information shown in Figure 4, the material of the printed circuit board is Rogers.

5 is an exemplary radiation pattern for illustrating the gain of the exemplary multi-band high gain omnidirectional antenna 100 of FIG. 1A at a frequency of 5.75 GHz (in terms of decibels in reference isotropic gain (dBi)). In this example, the multi-band high gain omnidirectional antenna 100 has a maximum or peak gain of about 4.7 dBi, an average gain of about 2.0 dBi, and a maximum angle of about 266.0 degrees. The information depicted in FIG. 4 generally shows the higher peak gain and smaller actual size achieved by the multi-band high gain omnidirectional antenna 100 when it is omnidirectional at 5.75 GHz. This performance will depend, at least in part, on the material of the printed circuit board. For the information shown in Figure 5, the material of the printed circuit board is Rogers.

6 and 7 illustrate exemplary dimensions in millimeters that may be used in the exemplary multi-band high gain omnidirectional antenna 100 illustrated in FIGS. 1A and 1B, respectively, for illustrative purposes only and not for purposes of limitation. In the particular embodiment illustrated in Figures 6 and 7, the printed circuit board is a Rogers printed circuit board. The materials and dimensions provided herein are for illustrative purposes only if the contacts can be configured from different materials and/or configured to have different dimensions. For example, the dimensions may vary somewhat depending on the materials selected for the various components of the antenna, the dielectric constant of the printed circuit board, and the length of the coaxial cable.

8 is a view of the multi-band high gain omnidirectional antenna 100 of FIG. 1B, and also illustrates the lengths of various portions of the antenna (λ/2, λ) having exemplary dimensions for illustrative purposes in accordance with an exemplary embodiment. /4). With continued reference to FIG. 8, the rule of thumb is that the collinear array has λ/2, λ/4 and the phases are opposite or matched (eg, via the tortuous segments 116, 118 shown in FIG. 1B), but other embodiments The dimensions may vary somewhat depending on the choice of material, printed circuit board dielectric constant, cable length, and the like.

9 is an illustration of an alternate embodiment of a multi-band high gain omnidirectional antenna 200 for use in one or more of the present disclosure. As shown in FIG. 9, the multi-band high gain omnidirectional antenna 200 includes radiating elements 202, 204 and a connecting element 206 for connecting the radiating elements 202, 204. In this example, the radiating elements 202, 204 can be formed from a conductive material such as a copper wire. By comparison, the radiating elements 102, 104 of the multi-band high gain omnidirectional antenna 100 shown in Figures 1A and 1B can be routed on a printed circuit board.

With continued reference to FIG. 9, the multi-band high gain omnidirectional antenna 200 includes a conductive tubular member 220, which in this example is shown as a metal tube or sleeve. The radiating elements 202, 204 and the tubular member 220 can be made of a metallic material such as, for example, copper, silver, gold, alloy, the foregoing combinations, other conductive materials, and the like. Moreover, the radiating elements 202, 204 and the tubular member 220 can be made of the same or different materials. Still further, the radiating element 202 can be made of a different material than the material from which the radiating element 204 is formed.

The multi-band high gain omnidirectional antenna 200 includes a power feed line 232 that supplies power to the multi-band high gain omnidirectional antenna 200. In the example shown in FIG. 9, the power feed line 232 is a coaxial cable conductor that extends or passes through the conductive tubular member 220. The power feed line 232 has a center conductor 234 that is attached to the connection element 206 to supply power to the radiating elements 202, 204. An outer layer portion or outer jacket (eg, metal fabric) of the power feed line 232 can be coupled to the conductive tubular member 220 to dissipate power from the outer jacket of the power feed line 232. Generally, such connections can be made using soldered connections, but other types of connections are possible, such as, for example, a mating connection, a press-fit connection, a crimping action, or other similar connection. By way of example, the outer portion of the power feed line 232 can be coupled to the sleeve 220 via a soldering or a crimping process. The sleeve 220 acts as a ground for a multi-band high gain omnidirectional antenna 200 having a length of 1/4 wavelength in a low frequency band (eg, a first frequency bandwidth of 2.4 GHz to 2.5 GHz). However, alternative embodiments may include any other suitable type of power feed and ground structure known in the art.

The radiating element 202 is configured to generate a first radiation pattern of one of the first frequencies (eg, a frequency within a first frequency bandwidth of one of 2.4 GHz to 2.5 GHz), and the radiating element 204 is The configuration is to generate a second radiation pattern of one of the second frequencies (eg, a frequency within a second frequency bandwidth of one of 4.9 GHz to 5.875 GHz). The first radiating element 202 includes first and second straight portions 208, 212 with a spiral or wrap 216 therebetween. The second radiating element 204 includes first and second straight portions 210, 214 with a spiral or wrap 2118 therebetween. In this particular example, each of the radiating elements 202, 204 includes two straight portions with a spiral therebetween. During operation, the coils of the spirals 216, 218 are operable to be opposite in phase and matched. Alternative embodiments may include one or more radiating elements having more than or less than two straight portions, more than one spiral portion, and/or one of the helical portions configured differently than shown in FIG.

In an exemplary embodiment, the radiating elements 202, 204 can each have a length of 103 mm and 43 mm. As an example, the first and second straight portions 208, 212 of the first radiating element may have lengths of λ/4 and λ/2, respectively, wherein λ is a first signal at the first operating frequency. Wavelength (such as: within the frequency bandwidth of 2.4 GHz to 2.5 GHz). Continuing with the example, the first and second straight portions 210, 214 of the second radiating element may have lengths of λ/4 and λ/2, respectively, wherein λ is a second signal at the second operating frequency. The wavelength (such as: within the frequency bandwidth of 4.9 GHz to 5.875 GHz). The operating frequency band can be tuned by varying the length of the radiating element 202, the length of the radiating element 204, or a combination thereof. Although two radiating elements 102, 104 are shown, more or less than two radiating elements are possible.

The terms "upper", "lower", "internal", "external", "inward", "outward", and the like are used in the context of the following description. The location shown, and the disclosure is not intended to be limited to such locations. The use of the terms "first," "second," and other numerical terms, <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

The articles "a" and "the" are intended to mean one or more of such elements or features. The terms "including", "comprising" and "having" are intended to include and mean that there may be a plurality of elements or features other than those specifically mentioned. It is further to be understood that the various method steps, processes, and operations described herein are not to be construed as necessarily in the particular order discussed or illustrated. It is also understood that additional or alternative steps may be utilized.

The foregoing description of the various embodiments of the invention has been provided for illustrative and illustrative purposes. The invention is not intended to be exhaustive or to limit the invention to the precise forms disclosed. The individual elements or characteristics of a particular embodiment are generally not limited to this particular embodiment, but are interchangeable if applicable and can be used in a selected embodiment, even if not specifically illustrated or described.

100. . . Multi-band high gain omnidirectional antenna

102/104. . . (first and second) radiating elements

103. . . length

106. . . Connecting element

108/110/112/114. . . Straight

116/118. . . Crotch

117/119. . . Bending point

120. . . Substrate

122/124/126. . . Power dissipation component

128. . . Radiation department

130. . . Power feed unit

132. . . Power feeder

134. . . Central conductor

136. . . Outer sheath

200. . . Multi-band high gain omnidirectional antenna

202/204. . . (first and second) radiating elements

206. . . Connecting element

208/210/212/214. . . Straight

216/218. . . Spiral or winding

220. . . Tubular parts, tubes, casing

232. . . Power feeder

234. . . Central conductor

The illustrations herein are for illustrative purposes only, and are not intended to limit the scope of the present disclosure in any way.

1A is a view of a multi-band high gain omnidirectional printed circuit board antenna in accordance with an exemplary embodiment of the present disclosure;

1B is a view of a multi-band, high-gain omnidirectional printed circuit board antenna with a coaxial cable lead attached in accordance with an exemplary embodiment of the present disclosure;

2A is an exemplary graph of voltage standing wave ratio (voltage standing wave ratio) versus frequency from 2 GHz to 6 GHz of the exemplary antenna shown in FIG. 1A;

Figure 2B is a table for referring to the voltage standing wave ratio and frequency (in GHz) of the five data points shown in the graph of Figure 2A;

3 is an exemplary radiation pattern for illustrating the gain of the exemplary antenna of FIG. 1B at a frequency of 2.45 GHz (in terms of decibels in reference isotropic gain (dBi));

4 is an exemplary radiation pattern for illustrating the gain of the exemplary antenna of FIG. 1B at a frequency of 4.9 GHz (in terms of decibels in reference isotropic gain (dBi));

5 is an exemplary radiation pattern for illustrating the gain of the exemplary antenna of FIG. 1B at a frequency of 5.75 GHz (in terms of decibels in reference isotropic gain (dBi));

6 is a view of a multi-band high gain omnidirectional printed circuit board antenna shown in FIG. 1A having exemplary dimensions in accordance with an exemplary embodiment and for illustrative purposes only;

7 is a view of a multi-band high gain omnidirectional printed circuit board antenna with attached coaxial cable conductors, shown in FIG. 1B, having exemplary dimensions in accordance with an exemplary embodiment and for illustrative purposes only;

Figure 8 is a view of the multi-band high gain omnidirectional printed circuit board antenna shown in Figure 1B with attached coaxial cable leads, and is also illustrative of exemplary dimensions for illustrative purposes in accordance with an exemplary embodiment. The length of various parts of the antenna (λ/2, λ/4); and

9 is a multi-band high gain omnidirectional antenna including a coaxial radiating element having a helix, a tubular member or sleeve, and a coaxial cable attached, in accordance with an exemplary embodiment of the present disclosure. a view.

100. . . Multi-band high gain omnidirectional antenna

102/104. . . (first and second) radiating elements

103. . . length

106. . . Connecting element

108/110/112/114. . . Straight

116/118. . . Crotch

117/119. . . Bending point

120. . . Substrate

122/124/126. . . Power dissipation component

128. . . Radiation department

130. . . Power feed unit

132. . . Power feeder

134. . . Central conductor

136. . . Outer sheath

Claims (55)

A multi-band high gain omnidirectional antenna comprising: a substrate comprising a radiating portion and a power feeding portion; a first radiating element coupled to the radiating portion of the substrate, the first radiation The component includes at least two substantially straight portions and at least one crotch portion between the at least two straight portions, and is configured to generate a first radiation pattern at a first operating frequency; and a first a radiating element coupled to the radiating portion of the substrate, the second radiating element comprising at least two substantially straight portions and at least one crotch portion between the at least two straight portions, and configured a second radiation pattern generated at a second operating frequency; at least one power dissipation element coupled to the power feed portion of the substrate; and a connection element coupled to the first radiation element and At least one straight portion of each of the second radiating elements, thereby connecting the first radiating element and the second radiating element; the first radiating element and the second radiating element are laterally spaced and outlined In the same direction from the vertically extending connecting element. The antenna of claim 1, wherein the antennas are configured to be operable in opposite phase and match. The antenna of claim 1 or 2, wherein: at least two substantially straight portions of the first radiating element comprise a λ/4 radiating portion between the at least one weir portion and the connecting portion, and Arranging on a side opposite to a side of the λ/4 radiation portion on the at least one crotch portion a λ/2 radiating portion, wherein λ is a first signal at a wavelength of the first operating frequency; and at least two substantially straight portions of the second radiating element are included in the at least one turn and the connection a λ/4 radiating portion between the portions, and a λ/2 radiating portion disposed on a side opposite to the side of the λ/4 radiating portion on the side of the at least one weir, wherein λ is a second The signal is at a wavelength of the second operating frequency. The antenna of claim 1, further comprising: a power feed line coupled to the first radiating element and the second radiating element; and a ground coupled to the at least one power dissipation element. The antenna of claim 4, wherein the power feeder comprises at least one coaxial cable. The antenna of claim 1, wherein the at least one power dissipating component comprises first, second, and third power dissipating components, and the second power dissipating component is schematically disposed at the first power dissipating component And between the third power dissipating components. The antenna of claim 1, wherein the at least one power dissipating component comprises: at least one power dissipating component having a length of about 19 mm and a width of about 2 mm; at least one power dissipating component, Having a length of about 22 mm and a width of about 5 mm; and at least one power dissipating element having a length of about 13 mm And a width of about 2 mm. The antenna of claim 1, wherein the at least one power dissipating component comprises: at least one λ/4 power dissipating component, wherein λ is a first signal at a wavelength of the first operating frequency; and at least one lambda /4 power dissipating component, wherein λ is a second signal at a wavelength of the second operating frequency. The antenna of claim 1, wherein: the first radiating element has an overall length of about 103 mm; at least two substantially straight portions of the first radiating element are included in the at least one crotch portion and the a first radiating portion having a length of about 23 mm between the connecting portions, and a length disposed on a side opposite to the side of the first radiating portion on the at least one weir portion and having a length of about 66 mm a second radiating portion; the second radiating element having an overall length of about 43 mm; and at least two substantially straight portions of the second radiating element including between the at least one weir portion and the connecting portion a first radiating portion of a length of 8 mm, and a second radiating portion disposed on a side opposite to a side of the first radiating portion on the side of the at least one weir portion and having a length of about 28 mm . The antenna of claim 1, further comprising a substrate to support the first radiating element, the second radiating element, and the connecting element. An antenna according to claim 10, wherein the substrate is There is a length of about 132 mm, a width of about 21 mm, and a thickness of about 80 mm. The antenna of claim 10 or 11, wherein: the substrate comprises a printed circuit board; and the first radiating element, the second radiating element, and the connecting element comprise at least one strip on the printed circuit board Trace. The antenna of claim 1, wherein: the crotch portion of the first radiating element comprises 9 bending points; and the crotch portion of the second radiating element comprises 5 bending points. The antenna of claim 1, wherein: the first operating frequency is between about 2.4 GHz and about 2.5 GHz; and the second operating frequency is between about 4.9 GHz and about 5.875 GHz. The antenna of claim 14, wherein the multi-band high gain omnidirectional antenna is configured such that a peak gain for the first operating frequency and the second operating frequency is between about 4.6 dBi and 6 dBi. The antenna of claim 14 or 15, wherein the multi-band high gain omnidirectional antenna is configured such that a voltage standing wave ratio for the first operating frequency and the second operating frequency is less than about 2:1 . The antenna of claim 1, wherein the first radiating element and the second radiating element comprise a conductive line comprising the at least two substantially straight portions and the at least one turn, wherein the conductive The line system includes a spiral portion defining the crotch portion. An antenna according to claim 17, wherein the conductive wire comprises copper. An antenna according to claim 17 or 18, further comprising a conductive tubular member and a coaxial cable coupled to the conductive tubular member, whereby the conductive tubular member is operable to increase the multi-band gain The omnidirectional antenna is grounded. A wireless communication system comprising an antenna of the first application of the patent scope. A multi-band high gain omnidirectional antenna comprising: a substrate comprising a radiating portion and a power feeding portion; a first radiating element coupled to the radiating portion of the substrate and operable to generate a first radiation pattern at a first operating frequency, the first radiating element comprising at least one crotch disposed between a λ/4 radiating portion and a λ/2 radiating portion, wherein λ is a a first signal at a wavelength of the first operating frequency; a second radiating element coupled to the radiating portion of the substrate and operable to generate a second radiation pattern at a second operating frequency, the first The second radiating element comprises at least one crotch disposed between a λ/4 radiating portion and a λ/2 radiating portion, wherein λ is a second signal at a wavelength of the second operating frequency; and at least one A power dissipation element is coupled to the power feed of the substrate. The antenna of claim 21, further comprising a connecting component, the connecting component is connected to the first radiating component and The λ/4 radiating portion of the second radiating element. The antenna of claim 21, wherein the first radiating element and the second radiating element are laterally spaced apart and extend substantially perpendicularly from the connecting element in the same direction. An antenna according to claim 21 or 22, wherein the antennas are configured to be operable in opposite phase and match. An antenna according to claim 21, wherein: a power feed line coupled to the first radiating element and the second radiating element; and a ground coupled to the at least one power dissipating element. The antenna of claim 25, wherein the power feeder comprises at least one coaxial cable. An antenna according to claim 21, 25 or 26, wherein the at least one power dissipating component comprises three power dissipating components having different lengths. The antenna of claim 21, 25 or 26, wherein the at least one power dissipating component comprises: at least one power dissipating component having a length of about 19 mm and a width of about 2 mm; at least one power A dissipating member having a length of about 22 mm and a width of about 5 mm; and at least one power dissipating member having a length of about 13 mm and a width of about 2 mm. Such as the antenna of claim 21 or 22, wherein the at least A power dissipation component includes: at least one λ/4 power dissipation component, wherein λ is a first signal at a wavelength of the first operating frequency; and at least one λ/4 power dissipation component, wherein λ is a second signal At a wavelength of the second operating frequency. The antenna of claim 21 or 22, wherein: the first radiating element has an overall length of about 103 mm; and the λ/4 radiating portion of the first radiating element has a length of about 23 mm; The λ/2 radiating portion of the first radiating element has a length of about 66 mm; the second radiating element has an overall length of about 43 mm; and the λ/4 radiating portion of the second radiating element has a length of about 8 mm The length; and the λ/2 radiation portion of the second radiating element has a length of about 28 mm. The antenna of claim 21, further comprising a substrate to support the first radiating element and the second radiating element. The antenna of claim 31, wherein the substrate has a length of about 132 mm, a width of about 21 mm, and a thickness of about 80 mm. The antenna of claim 31 or 32, wherein: the substrate comprises a printed circuit board; and the first radiating element and the second radiating element are attached to the printed circuit board At least one trace is included. The antenna of claim 21 or 22, wherein: the crotch portion of the first radiating element comprises nine bending points; and the crotch portion of the second radiating element comprises five bending points. The antenna of claim 21, wherein: the first operating frequency is between about 2.4 GHz and about 2.5 GHz; and the second operating frequency is between about 4.9 GHz and about 5.875 GHz. The antenna of claim 35, wherein the multi-band high gain omnidirectional antenna is configured such that a peak gain for the first operating frequency and the second operating frequency is between about 4.6 dBi and 6 dBi. The antenna of claim 35 or 36, wherein the multi-band high gain omnidirectional antenna is configured such that a voltage standing wave ratio for the first operating frequency and the second operating frequency is less than about 2:1 . The antenna of claim 21, wherein the first radiating element and the second radiating element comprise a conductive line comprising the at least two substantially straight portions and the at least one turn, wherein the conductive The line system includes a spiral portion defining the crotch portion. An antenna according to claim 38, wherein the conductive wire comprises copper. The antenna of claim 38 or 39, further comprising a conductive tubular member and a coaxial cable coupled to the conductive tubular member, whereby the conductive tubular member is operable to increase the multi-band gain The omnidirectional antenna is grounded. A wireless communication system comprising an antenna of claim 21 or 22. A multi-band high-gain omnidirectional antenna includes: a substrate including a radiating portion and a power feeding portion; at least one power dissipating member coupled to the power feeding portion of the substrate; a radiating element coupled to the radiating portion of the substrate and operable to generate a first radiation pattern at a first operating frequency, the first radiating element comprising a λ/4 radiating portion and a At least one crotch between the λ/2 radiating portions, wherein λ is a first signal at a wavelength of the first operating frequency; a second radiating element coupled to the radiating portion of the substrate and operable Forming a second radiation pattern at a second operating frequency, the second radiating element comprising at least one crotch disposed between a λ/4 radiating portion and a λ/2 radiating portion, wherein λ a second signal at a wavelength of the second operating frequency; a connecting element coupled to the λ/4 radiating portion of the first radiating element and the second radiating element; the first radiating element and the first The two radiating elements are laterally spaced and outlined In the same direction from the vertically extending connecting element. The antenna of claim 42, wherein: the substrate comprises a printed circuit board; and the first radiating element, the second radiating element, and the connecting element At least one trace is included on the printed circuit board. The antenna of claim 42 or 43, wherein: the crotch portion of the first radiating element comprises nine bending points; and the crotch portion of the second radiating element comprises five bending points. An antenna according to claim 42 wherein: the first operating frequency is between about 2.4 GHz and about 2.5 GHz; and the second operating frequency is between about 4.9 GHz and about 5.875 GHz. The antenna of claim 42, wherein the multi-band high gain omnidirectional antenna is configured such that a peak gain for the first operating frequency and the second operating frequency is between about 4.6 dBi and 6 dBi. The antenna of claim 45 or 46, wherein the multi-band high gain omnidirectional antenna is configured such that a voltage standing wave ratio for the first operating frequency and the second operating frequency is less than about 2:1 . A wireless communication system comprising an antenna of claim 42 or 43. A multi-band high gain omnidirectional antenna comprising: a first radiating element comprising a conductive line and operable to generate a first radiation pattern at a first operating frequency, the first radiating element Included in the at least one spiral disposed between a λ/4 radiating portion and a λ/2 radiating portion, wherein λ is a first signal at a wavelength of the first operating frequency; a second radiating element is a second radiation pattern comprising a conductive line and operable to generate a second operating frequency, the second radiating element package Having at least one helical portion disposed between a λ/4 radiating portion and a λ/2 radiating portion, wherein λ is a second signal at a wavelength of the second operating frequency; a connecting element is connected To the λ/4 radiating portion of the first radiating element and the second radiating element, the first radiating element and the second radiating element are laterally spaced apart and extend substantially perpendicularly from the connecting element in a same direction; a power dissipating component; and a power feed line having a wire and an outer portion coupled to the connecting component to supply power to the first radiating component and the second radiating component, and the outer portion is The at least one power dissipation element is coupled to dissipate power from an outer portion of the power feed line. The antenna of claim 49, wherein the at least one power dissipating component comprises a conductive tubular component; and wherein the power feedline comprises a coaxial cable coupled to the electrically conductive tubular component. An antenna according to claim 49 or 50, wherein: the first operating frequency is between about 2.4 GHz and about 2.5 GHz; and the second operating frequency is between about 4.9 GHz and about 5.875 GHz. . The antenna of claim 51, wherein the multi-band high gain omnidirectional antenna is configured such that a peak gain for the first operating frequency and the second operating frequency is between about 4.6 dBi and 6 dBi. The antenna of claim 49 or 50, wherein the multi-band high gain omnidirectional antenna is configured such that a voltage standing wave ratio for the first operating frequency and the second operating frequency is less than about 2:1 . An antenna according to claim 49 or 50, wherein the conductive wire comprises copper. A wireless communication system comprising an antenna of claim 49 or 50.