Wide-beam multiband antenna
By designing a multi-band antenna assembly and utilizing the coordination of the radome and reflector, the radiation performance of the wide-beam multi-band antenna was optimized, solving the problems of inconsistent beamwidth and insufficient gain in the existing technology, and realizing efficient communication in multiple frequency bands.
Patent Information
- Application Number
- CN202510588891.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-05-08
- Filing Date
- 2025-05-08
- Publication Date
- 2025-11-11
AI Technical Summary
Existing wide-beam multiband antennas suffer from inconsistent beamwidths when spanning multiple frequency bands, resulting in insufficient gain and front-to-back ratio performance. Furthermore, they are structurally complex, costly, and difficult to achieve excellent radiation modes within limited space.
A multi-band antenna assembly, including a radome and a reflector, is designed to coordinate the radiation patterns between the low-frequency and high-frequency bands by utilizing the specific shapes and spacing of the reflector panels, wings, and sidewalls, providing symmetrical radiation patterns and improved front-to-back ratio.
It achieves good radiation patterns in the 2.4 GHz, 5 GHz and 6 GHz frequency bands, with an azimuth beamwidth of about 90° and an elevation beamwidth of 60°, a gain of more than 6.0 dBi and a front-to-back ratio of better than 12 dB, and is compact and easy to manufacture.
Smart Images

Figure CN120933670A_ABST
Abstract
Description
Technical Field
[0001] This article mainly deals with antennas. Background Technology
[0002] Dual-band (2.4GHz and 5GHz) Wi-Fi access points (APs) and client devices are widely used in homes, businesses, and public spaces. While client devices typically operate in either of the two bands at any given time, APs usually operate on both bands simultaneously.
[0003] To increase capacity and reduce congestion, some access points (APs) utilize a "tri-band" solution. These APs operate in the same two frequency bands, but use two separate channels in the 5GHz band in addition to one in the 2.4GHz band. Effectively, there are three independent Wi-Fi networks (one in 2.4GHz and two in 5GHz) operating with a single AP. However, the 5GHz band is limited in terms of available bandwidth for two independent radios to operate at maximum performance. Recently, Wi-Fi 6E and Wi-Fi 7 have been introduced, utilizing the spectrum in the 6GHz band for communication. With this new available 6GHz band, APs will achieve tri-band communication and simultaneous operation in 2.4GHz, 5GHz, and 6GHz.
[0004] APs utilize multiband antennas of both directional and omnidirectional types. Typically, omnidirectional antennas are used for general coverage, but directional antennas can be used for better range and capacity. For directional antenna designs, the antenna beamwidth needs to be a similar beamwidth across three frequency bands. However, antenna structures are typically complex, expensive, and difficult to manufacture. Additionally, antenna structures typically have large overall dimensions to achieve wide beamwidths and high back-to-front ratios. Conventional wide-beam multiband antennas exhibit poor performance in terms of consistent beamwidth across multiple or wide frequency bands.
[0005] There is still a need for a wide-beam multiband antenna with improved performance, consistent beamwidth, gain, and front-to-back ratio. Summary of the Invention
[0006] In one embodiment, an antenna is provided and includes a radome having walls forming a cavity. The radome has a top, a bottom, a front, a rear, a first side, and a second side. The antenna includes an antenna assembly received within the cavity. The antenna assembly includes a multi-band antenna element and a reflector spaced apart from and facing the antenna element. The multi-band antenna element includes a high-frequency band antenna including a high-frequency band radiating arm. The multi-band antenna element includes a low-frequency band antenna including a low-frequency band radiating arm. The reflector includes a main reflector panel, a front reflector wing in front of the main reflector panel, a rear reflector wing behind the main reflector panel, main sidewalls on opposite sides of the main reflector panel, front sidewalls on opposite sides of the front reflector wing, rear sidewalls on opposite sides of the rear reflector wing, a front inner wall at the interface between the main reflector panel and the front reflector wing, and a rear inner wall at the interface between the main reflector panel and the rear reflector wing.
[0007] In another embodiment, an antenna assembly is provided and includes a multi-band antenna element comprising a high-frequency band antenna including a high-frequency band radiating arm and a low-frequency band antenna including a low-frequency band radiating arm. The antenna assembly includes a reflector spaced apart from and facing the multi-band antenna element. The reflector includes a main reflector panel, a front reflector wing in front of the main reflector panel, a rear reflector wing behind the main reflector panel, main sidewalls on opposite sides of the main reflector panel, front sidewalls on opposite sides of the front reflector wing, rear sidewalls on opposite sides of the rear reflector wing, a front inner wall at the interface between the main reflector panel and the front reflector wing, and a rear inner wall at the interface between the main reflector panel and the rear reflector wing.
[0008] In a further embodiment, an antenna assembly is provided and includes a multi-band antenna element comprising a high-frequency band antenna including a high-frequency band radiating arm and a low-frequency band antenna including a low-frequency band radiating arm. The antenna assembly includes reflectors spaced apart from and facing the multi-band antenna element. The reflector includes a main reflector panel, a front reflector wing in front of the main reflector panel, a rear reflector wing behind the main reflector panel, main sidewalls on opposite sides of the main reflector panel, front sidewalls on opposite sides of the front reflector wing, rear sidewalls on opposite sides of the rear reflector wing, a front inner wall at the interface between the main reflector panel and the front reflector wing, and a rear inner wall at the interface between the main reflector panel and the rear reflector wing. The antenna assembly includes secondary reflectors spaced apart from the multi-band antenna element. The secondary reflectors include a central panel aligned with the high-frequency band radiating arm and the low-frequency band radiating arm. Attached Figure Description
[0009] Figure 1 This is a side view of an antenna according to an exemplary embodiment.
[0010] Figure 2 This is an end view of an antenna according to an exemplary embodiment.
[0011] Figure 3 This is a rear perspective view of an antenna according to an exemplary embodiment.
[0012] Figure 4 An antenna according to an exemplary embodiment is shown.
[0013] Figure 5 An antenna according to an exemplary embodiment is shown.
[0014] Figure 6 This is a perspective view of an antenna assembly according to an exemplary embodiment.
[0015] Figure 7 This is a side view of an antenna assembly according to an exemplary embodiment.
[0016] Figure 8 This is a top view of an antenna assembly according to an exemplary embodiment.
[0017] Figure 9 This is a perspective view of a reflector according to an exemplary embodiment.
[0018] Figure 10 This demonstrates the use according to exemplary embodiments. Figure 9 The reflector shown in the image Figure 6-8 The chart shown summarizes the antenna's performance.
[0019] Figure 11 Showing use according to exemplary embodiments Figure 9 The reflector shown in the image Figure 6-8 The image shows the antenna radiation pattern (or radiation pattern) in the azimuth plane at low frequencies.
[0020] Figure 12 Showing use according to exemplary embodiments Figure 9 The reflector shown in the image Figure 6-8 The antenna radiation pattern in the elevation plane at low frequencies is shown in the figure.
[0021] Figure 13 Showing use according to exemplary embodiments Figure 9 The reflector shown in the image Figure 6-8 The antenna radiation pattern in the azimuth plane of the high-frequency band is shown in the figure.
[0022] Figure 14 Showing use according to exemplary embodiments Figure 9 The reflector shown in the image Figure 6-8The antenna radiation pattern in the elevation plane at high frequencies is shown in the figure.
[0023] Figure 15 This is a perspective view of an antenna assembly according to an exemplary embodiment.
[0024] Figure 16 This is a side view of an antenna assembly according to an exemplary embodiment.
[0025] Figure 17 This is a top view of an antenna assembly according to an exemplary embodiment.
[0026] Figure 18 This is a perspective view of the reflector and the secondary reflector according to an exemplary embodiment.
[0027] Figure 19 This is a perspective view of a secondary reflector according to an exemplary embodiment, wherein the reflector is removed to show the components of the secondary reflector.
[0028] Figure 20 This demonstrates the use according to exemplary embodiments. Figure 18 The reflector shown in the image and Figure 19 The secondary reflector shown in the image Figure 15-17 The chart shown summarizes the antenna's performance.
[0029] Figure 21 Showing use according to exemplary embodiments Figure 18 The reflector shown in the image and Figure 19 The secondary reflector shown in the image Figure 15-17 The antenna radiation pattern in the azimuth plane at low frequencies is shown in the figure.
[0030] Figure 22 Showing use according to exemplary embodiments Figure 18 The reflector shown in the image and Figure 19 The secondary reflector shown in the image Figure 15-17 The antenna radiation pattern in the elevation plane at low frequencies is shown in the figure.
[0031] Figure 23 Showing use according to exemplary embodiments Figure 18 The reflector shown in the image and Figure 19 The secondary reflector shown in the image Figure 15-17 The antenna radiation pattern in the azimuth plane of the high-frequency band is shown in the figure.
[0032] Figure 24 Showing use according to exemplary embodiments Figure 18 The reflector shown in the image and Figure 19 The secondary reflector shown in the image Figure 15-17 The antenna radiation pattern in the elevation plane at high frequencies is shown in the figure. Detailed Implementation
[0033] Figure 1 This is a side view of the antenna 100 according to an exemplary embodiment. Figure 2 This is an end view of the antenna 100 according to an exemplary embodiment. Figure 3 This is a rear perspective view of the antenna 100 according to an exemplary embodiment.
[0034] In an exemplary embodiment, antenna 100 is used for a Wi-Fi access point (AP), but is not limited to Wi-Fi applications. In the illustrated embodiment, antenna 100 is a hinged panel antenna having a hinge portion 102 configured to allow adjustment of the positioning of antenna 100. For example, hinge portion 102 includes a rotational hinge 104 between mounting portion 106 and main portion 108 of antenna 100. In alternative embodiments, other types of hinge portions may be provided. In various other embodiments, antenna 100 may be a fixed panel antenna or a stud-mounted panel antenna with a pigtail cable connection extending therefrom. In alternative embodiments, antenna 100 may be used for other types of applications besides serving as a Wi-Fi access point.
[0035] In an exemplary embodiment, antenna 100 is a multi-band antenna capable of operating in more than one frequency range. For example, antenna 100 may operate in multiple different Wi-Fi frequency bands, such as one or more low-frequency bands and / or one or more high-frequency bands. In an exemplary embodiment, antenna 100 may operate in a frequency range between 2.4 and 2.5 GHz and in a frequency range between 5.15 and 7.125 GHz to cover the 2.4 GHz Wi-Fi band, the 5 GHz Wi-Fi band, and the 6 GHz Wi-Fi band. In an exemplary embodiment, when multiple antennas are present on an AP or device, antenna 100 may be used for multiple-input multiple-output (MIMO) communication. In an exemplary embodiment, antenna 100 may have wide high-frequency band and / or wide low-frequency band antenna mode control. Antenna 100 may have a wide beamwidth in the azimuth plane. Antenna 100 may have a moderate beamwidth in the elevation plane. In an exemplary embodiment, antenna 100 has an azimuth beam of approximately 90° or greater and an elevation beam of approximately 60°. Antenna 100 can be configured for various beamwidth settings. Antenna 100 has a gain greater than 6.0 dBi and a front-to-back ratio better than 12 dB. In an exemplary embodiment, antenna 100 may have limited dimensions, such as for mounting within a specific defined space or shape of antenna device. In an exemplary embodiment, antenna 100 is a tri-band dipole antenna that provides a good radiation pattern while maintaining a good front-to-back ratio across the three frequency bands. In an exemplary embodiment, antenna 100 includes reflectors for antenna pattern control, such as for providing a wide azimuth beamwidth, for controlling antenna gain, and for improving the front-to-back ratio of the antenna. In an exemplary embodiment, the reflectors of antenna 100 are sized / shaped / spaced for the dipole antenna to harmonize the radiation pattern between the low-frequency and high-frequency bands of antenna 100. In an exemplary embodiment, the radiating elements and reflectors of the antenna are designed to provide a generally symmetrical radiation pattern. In an exemplary embodiment, antenna 100 may include matching elements for controlling antenna characteristics, such as balun-coupled radiating elements and / or lumped components and / or in EEPROM.
[0036] In an exemplary embodiment, antenna 100 includes radome 110 and antenna assembly 200 within radome 110. Figure 3(Shown in dashed lines in the image), and an antenna feed 150 coupled to the antenna assembly 200. In various embodiments, the antenna feed 150 is coupled to the radome 110. For example, the antenna feed 150 includes an RF connector 152 coupled to an end of the radome 110 and a coaxial cable 154 extending from the RF connector 152 to the antenna assembly 200. The radome 110 has dimensions and shape defining a defined space for the antenna assembly 200. The antenna assembly 200 is sized and shaped to fit within the defined space of the radome 110. The radome 110 is a cover or housing surrounding and protecting the antenna assembly 200 and holding and positioning radiating elements and reflectors.
[0037] The radome 110 includes a wall 112 forming a chamber 114. An antenna assembly 200 is received in the chamber 114. In the illustrated embodiment, the radome 110 includes a hinge portion 102 between a mounting portion 106 and a main portion 108. The antenna assembly 200 is received in the main portion 108. An antenna feed 150 is coupled to the mounting portion 106. The antenna feed 150 extends through the hinge portion 102 to be electrically connected to the antenna assembly 200 in the main portion 108. In an exemplary embodiment, the radome 110 includes a top 120, a bottom 122, a front portion 124, a rear portion 126, a first side 128, and a second side 130. The wall 112 may be flat at the top 120 and / or the bottom 122 and / or the front portion 124 and / or the rear portion 126 and / or the first side 128 and / or the second side 130. Wall 112 may be curved at the top 120 and / or bottom 122 and / or front 124 and / or rear 126 and / or first side 128 and / or second side 130. Wall 112 may be curved at intersections or corners. In alternative embodiments, radome 110 may have other shapes. In an exemplary embodiment, radome 110 is generally long and narrow. For example, radome 110 is long between the front 124 and rear 126, and narrow between the first side 128 and second side 130. In an exemplary embodiment, radome 110 has a low profile thickness between the top 120 and bottom 122. For example, thickness is the shortest dimension of radome 110, while length is the longest dimension of radome 110.
[0038] In an exemplary embodiment, the radome 110 is made of a plastic material. For example, the radome 110 may be a molded part. In an exemplary embodiment, the radome 110 may be a multi-piece structure, such as including an upper housing 132 and a lower housing 134.
[0039] Figure 4 An antenna 100 according to an exemplary embodiment is shown. In the illustrated embodiment, the antenna 100 is a fixed panel access point, rather than... Figure 1-3 The hinged panel access point is shown in the diagram. In alternative embodiments, the antenna 100 may have other shapes or sizes.
[0040] Figure 5 An antenna 100 according to an exemplary embodiment is shown. In the illustrated embodiment, the antenna 100 is a stud-mounted panel antenna with a pigtail cable connection extending therefrom. For example, the RF connector 152 of the antenna feed 150 is positioned away from the radome 110 and is connected to the radome 110 and the antenna assembly 200 via a coaxial cable 154 extending from an end of the radome 110. In alternative embodiments, the antenna 100 may have other shapes or sizes.
[0041] Figure 6 This is a perspective view of the antenna assembly 200 according to an exemplary embodiment. Figure 7 This is a side view of the antenna assembly 200 according to an exemplary embodiment. Figure 8 This is a top view of the antenna assembly 200 according to an exemplary embodiment. Figure 6-8 An antenna feed 150 is shown attached to the antenna assembly 200. For example, the RF connector 152 of the antenna feed 150 is attached to the antenna assembly 200 via a coaxial cable 154.
[0042] Antenna assembly 200 includes a multi-band antenna element 210 and a reflector 300 spaced apart from and facing the antenna element 210. In an exemplary embodiment, the reflector 300 is a stamped component. For example, the reflector 300 may be stamped from a sheet metal and formed into a specific shape designed to control and improve the radiation mode performance of the multi-band antenna element 210. In an exemplary embodiment, the reflector 300 provides antenna mode control, such as for providing a wide azimuth beamwidth, for controlling antenna gain, and for improving the front-to-back ratio of the antenna element 210. In an exemplary embodiment, the reflector 300 is sized / shaped / spaced relative to the antenna element 210 to coordinate radiation modes, such as between the low-frequency and high-frequency bands of the antenna element 210. In an exemplary embodiment, the reflector 300 is designed so that the antenna element 210 provides a generally symmetrical radiation mode.
[0043] In an exemplary embodiment, antenna element 210 is a multi-band antenna element 210 that can operate in more than one frequency range. For example, antenna 100 can operate in multiple different Wi-Fi frequency bands, such as one or more low-frequency bands and / or one or more high-frequency bands. In an exemplary embodiment, antenna element 210 is a tri-band antenna element that can operate in frequency ranges between 2.4 and 2.5 GHz and between 5.15 and 7.125 GHz to cover the 2.4 GHz Wi-Fi band, the 5 GHz Wi-Fi band, and the 6 GHz Wi-Fi band. In an alternative embodiment, antenna element 210 may be designed to operate in additional or different frequency ranges.
[0044] In an exemplary embodiment, antenna element 210 includes a high-frequency band antenna 230 and a low-frequency band antenna 240. The high-frequency band antenna 230 can operate in a higher frequency range than the low-frequency band antenna 240. The low-frequency band antenna 240 can operate in a lower frequency range than the high-frequency band antenna 230. In an exemplary embodiment, the low-frequency band antenna 240 can operate in a frequency range between 2.4 and 2.5 GHz, while the high-frequency band antenna 230 can operate in a frequency range between 5.15 and 7.125 GHz.
[0045] In an exemplary embodiment, antenna element 210 includes an antenna printed circuit board 212. A high-frequency band antenna 230 and a low-frequency band antenna 240 are defined by circuitry on the antenna printed circuit board 212. This circuitry may be provided on one or more layers of the antenna printed circuit board 212. The antenna printed circuit board 212 includes a lower surface 214 and an upper surface 216. The high-frequency band antenna 230 may be provided on the lower surface 214 and / or the upper surface 216. The low-frequency band antenna 240 may be provided on the lower surface 214 and / or the upper surface 216. In an exemplary embodiment, antenna element 210 includes a feed 218 for the high-frequency band antenna 230 and / or the low-frequency band antenna 240. In the illustrated embodiment, antenna element 210 includes a single feed. In an alternative embodiment, antenna element 210 may include multiple feeds. A coaxial cable 154 of antenna feed 150 is coupled to feed 218 of antenna element 210. Feed 218 may be defined by through-holes or pads on the antenna printed circuit board 212. The center conductor of the coaxial cable 154 can be soldered to the feed 218. The coaxial cable 154 can extend generally perpendicular to the antenna printed circuit board 212, such as extending downward from the lower surface 214.
[0046] In an exemplary embodiment, the antenna printed circuit board 212 extends between a front portion 220 and a rear portion 222. The antenna printed circuit board 212 has a first side 224 and a second side 226. The antenna printed circuit board 212 has a length between the front portion 220 and the rear portion 222 and a width between the first side 224 and the second side 226. In an exemplary embodiment, the antenna printed circuit board 212 is generally long and narrow to correspond to the shape of the radome 110. In alternative embodiments, other shapes are also possible.
[0047] In an alternative embodiment, antenna element 210 may not be provided with an antenna printed circuit board 212. Instead, antenna element 210 may include stamped metal elements or other types of conductive elements defining the radiating elements of antenna element 210.
[0048] The high-frequency band antenna 230 includes a high-frequency band radiating arm 232. In an exemplary embodiment, the high-frequency band radiating arm 232 is formed by circuitry from an antenna printed circuit board 212. In the illustrated embodiment, the high-frequency band radiating arm 232... Figure 8 The antenna is shown in dashed lines and provided on the lower surface 214 of the antenna printed circuit board 212. In an exemplary embodiment, the high-frequency band antenna 230 is a dipole antenna having one or more first high-frequency band radiating arms 232a and one or more second high-frequency band radiating arms 232b on opposite sides of the feed 218. The first and second high-frequency band radiating arms 232a, 232b can be separated by a slot 234. In various embodiments, a plurality of first high-frequency band radiating arms 232a are provided, such as on opposite sides of a gap 236a. Optionally, a low-frequency band antenna 240 may pass through the gap 236a between the first high-frequency band radiating arms 232a. The first high-frequency band radiating arms 232a may be rectangular, triangular, wedge-shaped, trapezoidal, bow-shaped, or have other shapes. In various embodiments, a plurality of second high-frequency band radiating arms 232b are provided, such as on opposite sides of a gap 236b. Optionally, a low-frequency band antenna 240 may pass through the gap 236b between the second high-frequency band radiating arms 232b. The second high-frequency band radiating arm 232b can be rectangular, triangular, wedge-shaped, trapezoidal, bow-shaped, or have other shapes. In an exemplary embodiment, the high-frequency band antenna 230 includes four high-frequency band radiating arms 232, which are generally arranged in a quadrant intersecting the feed 218. For example, the high-frequency band radiating arms 232 can form a cross dipole pattern. The high-frequency band radiating arms 232 can be generally X-shaped. In alternative embodiments, the high-frequency band antenna 230 can have other shapes.
[0049] The low-frequency band antenna 240 includes a low-frequency band radiating arm 242. In an exemplary embodiment, the low-frequency band radiating arm 242 is formed by circuitry from an antenna printed circuit board 212. In the illustrated embodiment, the low-frequency band radiating arm 242... Figure 8The image is partially shown in dashed lines. In an exemplary embodiment, portions of the low-frequency radiating arm 242 are provided on the lower surface 214 of the antenna printed circuit board 212, and portions of the low-frequency radiating arm 242 are provided on the upper surface 216. In an exemplary embodiment, the low-frequency antenna 240 is a dipole antenna having one or more first low-frequency radiating arms 242a and one or more second low-frequency radiating arms 242b on opposite sides of the feed 218. The first and second low-frequency radiating arms 242a, 242b can be separated by a slot 244. In the illustrated embodiment, each low-frequency radiating arm 242 includes a post 246 and a pad 248 at the distal end of the post 246. The post 246 extends between the feed 218 and the pad 248. The post 246 is generally long and narrow. The post 246 may be generally rectangular; however, in alternative embodiments, the post 246 may have other shapes. The pad 248 is wider than the post 246. The pad 248 may be rectangular, triangular, wedge-shaped, funnel-shaped, trapezoidal, or have other shapes. In the illustrated embodiment, the post 246 is provided on the lower surface 214 and the pad 248 is provided on the upper surface 216. The post 246 may be connected to the pad 248 by one or more through-holes through the antenna printed circuit board 212. In an exemplary embodiment, the low-frequency antenna 240 includes two low-frequency radiating arms 242 arranged on opposite front and rear sides of the feed 218. In alternative embodiments, the low-frequency antenna 240 may have other shapes.
[0050] In an exemplary embodiment, antenna element 210 includes a balunned-unbalanced radiating element 250. The balunned-unbalanced radiating element 250 controls the balance between high-frequency band radiating arms 232 and controls the balance between low-frequency band radiating arms 242. The balunned-unbalanced radiating element 250 may be defined by one or more circuits of antenna printed circuit board 212. The balunned-unbalanced radiating element 250 may be provided on upper surface 216. The balunned-unbalanced radiating element 250 may be coupled to feed 218. In various other embodiments, the balunned-unbalanced radiating element 250 may be a discrete electrical component coupled to antenna printed circuit board 212, such as being mounted to upper surface 216 of antenna printed circuit board 212.
[0051] In an exemplary embodiment, antenna element 210 includes one or more lumped components 252 to increase the bandwidth of antenna element 210. Lumped components 252 may include lumped resistors, capacitors, and / or inductors to modify the electrical characteristics of antenna element 210. Lumped components 252 may be mounted to antenna printed circuit board 212, such as to the upper surface 216. Lumped components 252 may be electrically connected to feed 218. Component 252 may include an inductive filter as a low-pass filter and an EEPROM for storing antenna information.
[0052] Figure 9 This is a perspective view of a reflector 300 according to an exemplary embodiment. The reflector 300 is a stamped component. For example, the reflector 300 may be stamped from a sheet metal and formed into a specific shape designed to control and improve the performance of the multiband antenna assembly 200.
[0053] The reflector 300 includes panels 302 that form the shape of the reflector 300. The panels 302 are joined at edges 304. For example, the panels 302 are curved or angled relative to each other at corners along the edges 304 of the panels 302. The reflector 300 may have a concave shape. For example, the panels 302 may form a recess 306 facing the antenna assembly 200. Each panel 302 has an inner surface 308 facing the recess 306.
[0054] In an exemplary embodiment, reflector 300 includes a main reflector panel 310, a front reflector wing 340 in front of the main reflector panel 310, and a rear reflector wing 370 behind the main reflector panel 310. In an exemplary embodiment, reflector 300 includes main sidewalls 330, 332 on opposite sides of the main reflector panel 310. In an exemplary embodiment, reflector 300 includes front sidewalls 360, 362 on opposite sides of the front reflector wing 340 and rear sidewalls 390, 392 on opposite sides of the rear reflector wing 370. In an exemplary embodiment, reflector includes a front inner wall 334 at the interface between the main reflector panel 310 and the front reflector wing 340 and a rear inner wall 336 at the interface between the main reflector panel 310 and the rear reflector wing 370. In various other embodiments that change the shape of reflector 300, reflector 300 may include an additional panel 302.
[0055] In an exemplary embodiment, the main reflector panel 310 is planar. However, the main reflector panel 310 may be curved, such as curved from front to back and / or from side to side. In the illustrated embodiment, the main reflector panel 310 is generally rectangular. However, in alternative embodiments, the main reflector panel 310 may have other shapes. The main reflector panel 310 includes a front portion 312 and a rear portion 314. The main reflector panel 310 extends between a first side 316 and a second side 318. In an exemplary embodiment, the first side 316 and the second side 318 are parallel to each other. Alternatively, the first side 316 and the second side 318 may be perpendicular to the front portion 312 and / or the rear portion 314. The main reflector panel 310 has a width between the first side 316 and the second side 318. The main reflector panel 310 has a length between the front portion 312 and the rear portion 314. The width and length can be selected based on the width and length of the radome 110 (such as the main portion 108 of the radome 110). The width and length can be selected based on the width and length of the antenna element 210. For example, the width and / or length can be selected based on the positioning of the high-frequency band antenna 230 and / or the positioning of the low-frequency band antenna 240. In an exemplary embodiment, the width of the main reflector panel 310 is wider than the widths of the high-frequency band antenna 230 and the low-frequency band antenna 240. In an exemplary embodiment, the length of the main reflector panel 310 is longer than the length of the high-frequency band antenna 230. The length of the main reflector panel 310 may be shorter than the length of the low-frequency band antenna 240.
[0056] In an exemplary embodiment, the main reflector panel 310 includes a slot 320 formed therein. The slot 320 allows components to pass through the main reflector panel 310. For example, one of the slots 320 may receive a coaxial cable 154. Figure 6 The slot 320 may receive portions of the radome 110, such as support walls for supporting the reflector 300 and / or antenna element 210. The slot 320 may be used to control the reflection characteristics of the reflector 300, such as for controlling the antenna mode.
[0057] Main sidewalls 330 and 332 extend from the first side 316 and the second side 318, respectively. In an exemplary embodiment, the main sidewalls 330 and 332 are perpendicular to the main reflector panel 310. For example, the main reflector panel 310 may be oriented horizontally, while the main sidewalls 330 and 332 may be oriented vertically. In alternative embodiments, other orientations are also possible. The main sidewalls 330 and 332 provide antenna mode control for azimuth plane beamwidth. The main sidewalls 330 and 332 have a height measured between the outer edges of the main reflector panel 310 and the main sidewalls 330 and 332. In an exemplary embodiment, the height of the first sidewall 330 is the same as the height of the second sidewall 332. However, in alternative embodiments, the heights of the main sidewalls 330 and 332 may be different from each other. Optionally, the main sidewalls 330 and 332 may have varying heights, such as having a higher portion and a lower portion. In various embodiments, the main sidewalls 330, 332 may include one or more slots (not shown) that may be open at the bottom and / or top and / or sides.
[0058] The front inner wall 334 is located at or near the interface between the main reflector panel 310 and the front reflector wing 340. The front inner wall 334 extends from the main reflector panel 310. In an exemplary embodiment, the front inner wall 334 is oriented generally perpendicular to the main reflector panel 310. For example, the main reflector panel 310 may be oriented horizontally, while the front inner wall 334 may be oriented generally vertically. The front inner wall 334 may be aligned with the high-frequency band antenna 230 to control the antenna mode of the high-frequency band antenna 230. For example, the front inner wall 334 may widen or increase the elevation beamwidth for the high-frequency band antenna 230. In an exemplary embodiment, the front inner wall 334 is stamped from the front reflector wing 340 and bent at an angle, such as a right angle, relative to the main reflector panel 310. In an exemplary embodiment, the front inner wall 334 is generally rectangular in shape. However, in alternative embodiments, the front inner wall 334 may have other shapes. The front inner wall 334 has a height measured between the main reflector panel 310 and the outer edge of the front inner wall 334. The height of the front inner wall 334 may be similar to the height of the main side walls 330, 332. In alternative embodiments, the height of the front inner wall 334 may differ from the height of the main side walls 330, 332, such as being higher than the main side walls 330, 332. Optionally, the front inner wall 334 may have a varying height, such as having a higher portion and a lower portion. In various embodiments, the front inner wall 334 may include one or more slots (not shown) in the front inner wall 334, which may be open at the bottom and / or top and / or sides.
[0059] The rear inner wall 336 is located at or near the interface between the main reflector panel 310 and the rear reflector wing 370. The rear inner wall 336 extends from the main reflector panel 310. In an exemplary embodiment, the rear inner wall 336 is oriented generally perpendicular to the main reflector panel 310. For example, the main reflector panel 310 may be oriented horizontally, while the rear inner wall 336 may be oriented generally vertically. The rear inner wall 336 may be aligned with the high-frequency band antenna 230 to control the antenna mode of the high-frequency band antenna 230. For example, the rear inner wall 336 may widen or increase the elevation beamwidth for the high-frequency band antenna 230. In an exemplary embodiment, the rear inner wall 336 is stamped from the rear reflector wing 370 and bent at an angle, such as a right angle, relative to the main reflector panel 310. In an exemplary embodiment, the rear inner wall 336 is generally rectangular in shape. However, in alternative embodiments, the rear inner wall 336 may have other shapes. The rear inner wall 336 has a height measured between the main reflector panel 310 and the outer edge of the rear inner wall 336. The height of the rear inner wall 336 may be similar to the height of the main side walls 330, 332. In alternative embodiments, the height of the rear inner wall 336 may differ from the height of the main side walls 330, 332, such as being higher than the main side walls 330, 332. Optionally, the rear inner wall 336 may have a varying height, such as having a higher portion and a lower portion. In various embodiments, the rear inner wall 336 may include one or more slots 338 in the rear inner wall 336, which may be open at the bottom and / or top and / or sides. The slots 338 may receive a coaxial cable 154 during assembly to allow the coaxial cable 154 to pass through the reflector 300.
[0060] In an exemplary embodiment, the front reflector wing 340 is planar. However, the front reflector wing 340 may be curved, such as curving from front to back and / or from side to side. In an exemplary embodiment, the front reflector wing 340 is curved at an angle relative to the main reflector panel 310. The front reflector wing 340 is non-coplanar and angled to the main reflector panel 310. For example, the front reflector wing 340 is curved upward at an angle relative to the main reflector panel 310. The upward taper of the front reflector wing 340 provides different spacing for the antenna element 210 to control the antenna radiation mode. For example, angling the front reflector wing 340 toward the antenna element 210 can coordinate the radiation modes between low-frequency and high-frequency bands. In the illustrated embodiment, the front reflector wing 340 is generally rectangular. However, in alternative embodiments, the front reflector wing 340 may have other shapes, such as being trapezoidal or having other shapes. The front reflector wing 340 includes a front portion 342 and a rear portion 344. The rear portion 344 connects to the front portion 312 of the main reflector panel 310 at a bend 345. The front reflector wing 340 extends between a first side 346 and a second side 348. In an exemplary embodiment, at least portions of the first side 346 and the second side 348 are tapered relative to each other, such as being closer together at the front portion 342 than at the rear portion 344. However, in an alternative embodiment, the first side 346 and the second side 348 may be parallel to each other. The front reflector wing 340 has a width between the first side 346 and the second side 348. This width may vary, such as being narrower at the front portion 342 and wider at the rear portion 344. The front reflector wing 340 has a length between the front portion 342 and the rear portion 344. This length may vary, such as being wider at the center and narrower at the sides. The width and length may be selected based on the width and length of the radome 110. The width and length may be selected based on the width and length of the antenna element 210. For example, the width and / or length may be selected based on the positioning of the high-frequency band antenna 230 and / or the low-frequency band antenna 240. In an exemplary embodiment, the front reflector wing 340 is configured to align with the low-frequency band antenna 240. For example, the high-frequency band antenna 230 does not extend on the front reflector wing 340.
[0061] In an exemplary embodiment, the front reflector wing 340 includes a recess 350 formed therein. The recess 350 may be formed during stamping of the front inner wall 334. The recess 350 may be aligned with a low-frequency antenna 240. The recess 350 may be used to control the reflection characteristics of the reflector 300, such as to control the antenna pattern. For example, the recess 350 may improve the radiation pattern for the low-frequency antenna 240. The size and shape of the recess may be selected for low-frequency radiation pattern control. In an alternative embodiment, the front reflector wing 340 may include other notches or openings in addition to the recess 350. For example, the front reflector wing 340 includes an opening 352 configured to receive a support post of the radome 110 for supporting the reflector 300 relative to the radome 110.
[0062] Front sidewalls 360 and 362 extend along a first side 346 and a second side 348 of the front reflector wing 340, respectively. In an exemplary embodiment, front sidewalls 360 and 362 extend forward from main sidewalls 330 and 332. For example, front sidewalls 360 and 362 may be stamped together with main sidewalls 330 and 332. In an alternative embodiment, front sidewalls 360 and 362 may extend from the front reflector wing 340. For example, front sidewalls 360 and 362 may be stamped together with the front reflector wing 340. Front sidewalls 360 and 362 have variable heights. For example, front sidewalls 360 and 362 may taper from rear to front. Front sidewalls 360 and 362 may taper at an angle to match the curvature angle of the front reflector wing 340 relative to the main reflector panel 310. In an exemplary embodiment, the height of the first front sidewall 360 is the same as the height of the second front sidewall 362. However, in alternative embodiments, the heights of the front sidewalls 360 and 362 may differ from each other. In various embodiments, the front sidewalls 360 and 362 may include one or more slots (not shown) that may be open at the bottom and / or top and / or sides. The front sidewalls 360 and 362 provide antenna mode control for azimuth plane beamwidth.
[0063] In an exemplary embodiment, the rear reflector wing 370 is planar. However, the rear reflector wing 370 may be curved, such as from front to back and / or from side to side. In an exemplary embodiment, the rear reflector wing 370 is curved at an angle relative to the main reflector panel 310. The rear reflector wing 370 is non-coplanar and angled to the main reflector panel 310. For example, the rear reflector wing 370 is curved upward at an angle relative to the main reflector panel 310. The upward tapering of the rear reflector wing 370 provides different spacing for the antenna element 210 to control the antenna radiation mode. For example, angling the rear reflector wing 370 toward the antenna element 210 can coordinate the radiation modes between low-frequency and high-frequency bands. In the illustrated embodiment, the rear reflector wing 370 is generally trapezoidal. However, in alternative embodiments, the rear reflector wing 370 may have other shapes, such as rectangular, triangular, or having other shapes. The rear reflector wing 370 includes a front portion 372 and a rear portion 374. The front portion 372 connects to the rear portion 314 of the main reflector panel 310 at a bend 375. The rear reflector wing 370 extends between a first side 376 and a second side 378. In an exemplary embodiment, at least portions of the first side 376 and the second side 378 are tapered relative to each other, such as being closer together at the rear portion 374 than at the front portion 372. However, in an alternative embodiment, the first side 376 and the second side 378 may be parallel to each other. The rear reflector wing 370 has a width between the first side 376 and the second side 378. This width may vary, such as being narrower at the rear portion 374 and wider at the front portion 372. The rear reflector wing 370 has a length between the front portion 372 and the rear portion 374. This length may vary, such as being wider at the center and narrower at the sides. The width and length may be selected based on the width and length of the radome 110. The width and length may be selected based on the width and length of the antenna element 210. For example, the width and / or length may be selected based on the positioning of the high-frequency band antenna 230 and / or the low-frequency band antenna 240. In an exemplary embodiment, the rear reflector wing 370 is configured to align with the low-frequency band antenna 240. For example, the high-frequency band antenna 230 does not extend on the rear reflector wing 370.
[0064] In an exemplary embodiment, the rear reflector wing 370 includes a notch 380 formed therein. The notch 380 may be formed during stamping of the rear inner wall 336. The notch 380 may be aligned with a low-frequency band antenna 240. The notch 380 may be used to control the reflection characteristics of the reflector 300, such as to control the antenna pattern. For example, the notch 380 may improve the radiation pattern for the low-frequency band antenna 240. The size and shape of the notch may be selected for low-frequency band radiation pattern control. In an alternative embodiment, the rear reflector wing 370 may include other notches or openings in addition to the notch 380. For example, the rear reflector wing 370 includes an opening 382 configured to receive a support post of the radome 110 for supporting the reflector 300 relative to the radome 110. The rear reflector wing 370 may include a notch 384 extending from the rear portion 374 to the notch 380. The slot 384 is configured to receive the coaxial cable 154, such as to allow the coaxial cable 154 to pass through the reflector 300 during assembly.
[0065] Rear sidewalls 390 and 392 extend along a first side 376 and a second side 378 of the rear reflector wing 370, respectively. In an exemplary embodiment, the rear sidewalls 390 and 392 extend rearward from the main sidewalls 330 and 332. For example, the rear sidewalls 390 and 392 may be stamped together with the main sidewalls 330 and 332. In an alternative embodiment, the rear sidewalls 390 and 392 may extend from the rear reflector wing 370. For example, the rear sidewalls 390 and 392 may be stamped together with the rear reflector wing 370. In an exemplary embodiment, the rear sidewalls 390 and 392 may include one or more angles or bends, such as those to match the shape of the sides 376 and 378 of the rear reflector wing 370. The rear sidewalls 390 and 392 have variable heights. For example, the rear sidewalls 390 and 392 may taper from the front to the rear. The rear sidewalls 390 and 392 may taper at an angle to match the curvature angle of the rear reflector wing 370 relative to the main reflector panel 310. In an exemplary embodiment, the height of the first rear sidewall 390 is the same as the height of the second rear sidewall 392. However, in alternative embodiments, the heights of the rear sidewalls 390 and 392 may differ from each other. In various embodiments, the rear sidewalls 390 and 392 may include one or more slots (not shown) that may be open at the bottom and / or top and / or sides. The rear sidewalls 390 and 392 provide antenna mode control for azimuth plane beamwidth.
[0066] The reflector 300 has a concave shape facing the antenna element 210. Generally, the high-frequency band antenna 230 is aligned with the central main section of the reflector 300, and the low-frequency band antenna 240 extends on the front and rear reflector wings 340, 370. The main reflector panel 310, main sidewalls 330, 332, and front and rear inner walls 334, 336 are sized / shaped / positioned to shape the high-frequency band beamwidth. The front and rear reflector wings 340, 370, and front and rear sidewalls 360, 362, 390, 392 are sized / shaped / positioned to shape the low-frequency band beamwidth. The front and rear sidewalls 360, 362, 390, 392 may have different heights compared to the main sidewalls 330, 332 for beamwidth control in different frequency bands (e.g., low-frequency band and high-frequency band). The heights of the main sidewalls 330, 332 and the front and rear inner walls 334, 336 control the beamwidth in the azimuth and elevation angles, respectively. Optionally, one of the inner walls 334 or 336 can be of different heights to compensate for asymmetric structures in the elevation angle to improve asymmetric radiation patterns. The overall length of the reflector 300 is designed to improve the front-to-rear ratio and narrower elevation beamwidth. Adding notches 350, 380 along the curved or angled front and rear reflector wings 340, 370 in front of and behind the main reflector panel 310 contributes to the performance of low-frequency radiation patterns. The notches facilitate the manufacture and assembly of the antenna assembly 200, such as allowing assembly to the antenna feed 150 and coaxial cable 154.
[0067] Figure 10 Is it for display use Figure 9 The reflector shown in the image Figure 6-8 The graph shown summarizes the performance of antenna 100. Antenna 100 is a multi-band antenna. In the illustrated embodiment, antenna 100 covers the 2.4 GHz Wi-Fi band, the 5 GHz Wi-Fi band, and the 6 GHz Wi-Fi band. The graph displays performance data at multiple frequencies within the 2.4 GHz, 5 GHz, and 6 GHz Wi-Fi bands. The graph shows performance characteristics including peak gain (dBi), efficiency (%), front-to-back ratio (dB), beamwidth-azimuth, and beamwidth-elevation. The antenna with reflector provides a wide beamwidth (e.g., a wide azimuth beamwidth of approximately 90° and an elevation beamwidth of approximately 60°) for multi-band operation with low variation across a wide frequency range. The antenna and reflector provide an effective gain of approximately 6 dBi and a good front-to-back ratio of better than 12.8 dB.
[0068] Figure 11 Display usage Figure 9 The reflector shown in the image Figure 6-8The antenna 100 is shown in the azimuth plane at low frequencies, illustrating its antenna radiation pattern. This antenna provides a wide beamwidth with low variation across a wide frequency range. Figure 11 The results shown are provided for illustrative purposes and not for limiting purposes. Alternative embodiments of the antenna and reflector may be configured differently and have the same characteristics as... Figure 11 The operation or performance parameters displayed are different from the operation or performance parameters shown.
[0069] Figure 12 Display usage Figure 9 The reflector shown in the image Figure 6-8 The antenna 100 is shown in the elevation plane at low frequencies, illustrating its antenna radiation pattern. This antenna provides a wide beamwidth with low variation across a broad frequency range. Figure 12 The results shown are provided for illustrative purposes and not for limiting purposes. Alternative embodiments of the antenna and reflector may be configured differently and have the same characteristics as... Figure 12 The operation or performance parameters displayed are different from the operation or performance parameters shown.
[0070] Figure 13 Display usage Figure 9 The reflector shown in the image Figure 6-8 The antenna 100 is shown in the azimuth plane at high frequencies, illustrating its antenna radiation pattern. This antenna provides a wide beamwidth with low variation across a broad frequency range. Figure 13 The results shown are provided for illustrative purposes and not for limiting purposes. Alternative embodiments of the antenna and reflector may be configured differently and have the same characteristics as... Figure 13 The operation or performance parameters displayed are different from the operation or performance parameters shown.
[0071] Figure 14 Display usage Figure 9 The reflector shown in the image Figure 6-8 The antenna 100 is shown in the elevation plane at high frequencies, illustrating its antenna radiation pattern. This antenna provides a wide beamwidth with low variation across a broad frequency range. Figure 14 The results shown are provided for illustrative purposes and not for limiting purposes. Alternative embodiments of the antenna and reflector may be configured differently and have the same characteristics as... Figure 14 The operation or performance parameters displayed are different from the operation or performance parameters shown.
[0072] Figure 15 This is a perspective view of the antenna assembly 200 according to an exemplary embodiment. Figure 16 This is a side view of the antenna assembly 200 according to an exemplary embodiment. Figure 17 This is a top view of the antenna assembly 200 according to an exemplary embodiment. Figure 15-17An antenna feed 150 is shown attached to the antenna assembly 200. For example, the RF connector 152 of the antenna feed 150 is attached to the antenna assembly 200 via a coaxial cable 154. Figure 15-17 Antenna assembly 200 is shown, which includes a secondary reflector 400 separate and discrete from the primary reflector 300. The secondary reflector 400 improves antenna performance. For example, the secondary reflector 400 can improve the front-to-back ratio. The secondary reflector 400 can improve peak gain. The secondary reflector 400 can improve beamwidth in the azimuth and / or elevation planes. The secondary reflector 400 can improve beam orientation in the azimuth and / or elevation planes.
[0073] Antenna assembly 200 includes a multi-band antenna element 210, a reflector 300 spaced apart from and facing the antenna element 210, and a secondary reflector 400 spaced apart from and facing the antenna element 210. In an exemplary embodiment, the reflector 300 is located between the secondary reflector 400 and the antenna element 210. For example, the secondary reflector 400 is located at the bottom of the antenna 100, such as at the bottom of the radome 110, while the antenna element 210 is located at the top of the antenna 100, such as at the top of the radome 110. The reflector 300 is suspended in the middle of the radome 110 between the antenna element 210 and the secondary reflector 400. The secondary reflector 400 may be a stamped component. For example, the reflector 300 may be stamped from a sheet metal and formed into a specific shape designed to control and improve the performance of the multi-band antenna element 210. In various other embodiments, the secondary reflector 400 may be a film applied to the inner surface of the radome 110 at its bottom. In alternative embodiments, the secondary reflector 400 may be a coating deposited onto the inner surface of the radome 110. In an exemplary embodiment, the secondary reflector 400 provides antenna mode control, such as for providing a wide beamwidth, for controlling antenna gain, and for improving the front-to-back ratio of the antenna element 210. In an exemplary embodiment, the secondary reflector 400 sets the size / shape / spacing of the antenna element 210 to coordinate the radiation pattern, such as between the low-frequency band and the high-frequency band of the antenna element 210. In an exemplary embodiment, the secondary reflector 400 is designed so that the antenna element 210 provides a generally symmetrical radiation pattern.
[0074] Antenna element 210 includes a high-frequency band antenna 230 and a low-frequency band antenna 240. In an exemplary embodiment, the low-frequency band antenna 240 operates in a frequency range between 2.4 and 2.5 GHz, while the high-frequency band antenna 230 operates in a frequency range between 5.15 and 7.125 GHz. In an exemplary embodiment, antenna element 210 includes an antenna printed circuit board 212, and the high-frequency band antenna 230 and the low-frequency band antenna 240 are circuit-defined by the antenna printed circuit board 212. In an alternative embodiment, antenna element 210 may not be provided with an antenna printed circuit board 212. Instead, antenna element 210 may include stamped metal elements or other types of conductive elements defining the radiating elements of antenna element 210. The high-frequency band antenna 230 includes a high-frequency band radiating arm 232. The low-frequency band antenna 240 includes a low-frequency band radiating arm 242.
[0075] Figure 18 This is a perspective view of the reflector 300 and the subreflector 400 according to an exemplary embodiment. Figure 19 This is a perspective view of a secondary reflector 400 according to an exemplary embodiment, wherein the reflector 300 is removed to show the components of the secondary reflector 400. The secondary reflector 400 is located below the primary reflector 300.
[0076] The reflector 300 includes a panel 302 forming a recessed shape. The reflector 300 includes a main reflector panel 310, a front reflector wing 340 in front of the main reflector panel 310, and a rear reflector wing 370 behind the main reflector panel 310. The reflector 300 includes main sidewalls 330 and 332 on opposite sides of the main reflector panel 310, front sidewalls 360 and 362 on opposite sides of the front reflector wing 340, and rear sidewalls 390 and 392 on opposite sides of the rear reflector wing 370. The reflector 300 includes a front inner wall 334 and a rear inner wall 336.
[0077] The secondary reflector 400 includes a main panel 410 and wing panels 440 extending from the main panel 410. In various other embodiments, the secondary reflector 400 may include additional panels, such as wing panels at both ends of the main panel 410 and / or side panels extending along the sides of the main panel 410, thereby altering the shape of the secondary reflector 400. The secondary reflector 400 improves the front-to-back ratio while maintaining a wide azimuth beamwidth.
[0078] In an exemplary embodiment, the main panel 410 is planar. However, the main panel 410 may be curved, such as curving from front to back and / or from side to side. In the illustrated embodiment, the main panel 410 is generally rectangular. However, in alternative embodiments, the main panel 410 may have other shapes. The main panel 410 includes a front portion 412 and a rear portion 414. The main panel 410 extends between a first side 416 and a second side 418. In an exemplary embodiment, the first side 416 and the second side 418 are parallel to each other. Alternatively, the first side 416 and the second side 418 may be perpendicular to the front portion 412 and / or the rear portion 414. The main panel 410 has a width between the first side 416 and the second side 418. The main panel 410 has a length between the front portion 412 and the rear portion 414. The width and length may be selected based on the width and length of the radome 110 (such as the main portion 108 of the radome 110). The width and length can be selected based on the width and length of the antenna element 210. For example, the width and / or length can be selected based on the positioning of the high-frequency band antenna 230 and / or the positioning of the low-frequency band antenna 240. In an exemplary embodiment, the width of the main panel 410 is narrower than the width of the primary reflector panel 310 of the reflector 300. The length of the main panel 410 can be longer than the length of the primary reflector panel 310 of the reflector 300. In an exemplary embodiment, the length of the main panel 410 is longer than the length of the high-frequency band antenna 230 to provide a reflector cover for the low-frequency band antenna 240. In various embodiments, the main panel 410 may include a notch 420 formed in the main panel 410. The notch 420 may allow components to pass through the main panel 410. The notch 420 may receive portions of the radome 110, such as support walls for supporting the reflector 300 and / or the antenna element 210. The notch 420 may be used to control the reflection characteristics of the secondary reflector 400, such as for controlling the antenna mode. In various embodiments, the secondary reflector 400 may include sidewalls (not shown) extending from the first side 416 and the second side 418, respectively, to provide antenna mode control, such as for controlling the azimuth plane beamwidth.
[0079] Wing panel 440 extends from main panel 410 (e.g., from front portion 412). In an exemplary embodiment, wing panel 440 is planar. However, wing panel 440 may be curved, such as curving from front to back and / or from side to side. In an exemplary embodiment, wing panel 440 is curved at an angle relative to main reflector panel 410. Wing panel 440 is non-coplanarly angled to main reflector panel 410. For example, wing panel 440 is curved upward at an angle relative to main reflector panel 410. The upward taper of wing panel 440 provides different spacing for antenna elements 210 to control antenna radiation patterns. Angling wing panel 440 increases the overall length of secondary reflector 400. The angle of wing panel 440 may correspond to the shape of radome 110, such as following the contour or angle of radome 110. In the illustrated embodiment, wing panel 440 is generally rectangular. However, in alternative embodiments, wing panel 440 may have other shapes, such as being trapezoidal or having other shapes. The wing panel 440 includes a front portion 442 and a rear portion 444. The rear portion 444 connects to the front portion 412 of the primary reflector panel 410 at a bend 445. The wing panel 440 extends between a first side 446 and a second side 448. The first side 446 and the second side 448 may be parallel to each other. However, the first side 446 and the second side 448 may be tapered, such as to correspond to the shape of the radome 110. In various embodiments, the wing panel 440 may include openings, notches, or recesses, such as for controlling the reflection characteristics of the secondary reflector 400 and / or for accommodating portions of the radome 110. In various embodiments, the secondary reflector 400 may include sidewalls (not shown) extending along the sides 446, 448 of the wing panel 440 to provide antenna mode control, such as for controlling the azimuth plane beamwidth.
[0080] Figure 20 Is it for display use Figure 18 The reflector shown in the image and Figure 19 The secondary reflector 400 shown in the image Figure 15-17The graph shown summarizes the performance of antenna 100. Antenna 100 is a multi-band antenna. In the illustrated embodiment, antenna 100 covers the 2.4 GHz Wi-Fi band, the 5 GHz Wi-Fi band, and the 6 GHz Wi-Fi band. The graph displays performance data at multiple frequencies within the 2.4 GHz, 5 GHz, and 6 GHz Wi-Fi bands. The graph shows performance characteristics including peak gain (dBi), efficiency (%), front-to-back ratio (dB), beamwidth-azimuth, and beamwidth-elevation. The antenna with reflector provides a wide beamwidth (e.g., a wide azimuth beamwidth of approximately 90° and an elevation beamwidth of approximately 60°) for multi-band operation with low variation across a wide frequency range. The antenna and reflector provide an effective gain of approximately 6 dBi and a good front-to-back ratio of better than 14 dB.
[0081] Figure 21 Display usage Figure 18 The reflector shown in the image and Figure 19 The secondary reflector 400 shown in the image Figure 15-17 The antenna 100 is shown in the azimuth plane at low frequencies, illustrating its antenna radiation pattern. This antenna provides a wide beamwidth with low variation across a wide frequency range. Figure 21 The results shown are provided for illustrative purposes and not for limiting purposes. Alternative embodiments of the antenna and reflector may be configured differently and have the same characteristics as... Figure 21 The operation or performance parameters displayed are different from the operation or performance parameters shown.
[0082] Figure 22 Display usage Figure 18 The reflector shown in the image and Figure 19 The secondary reflector 400 shown in the image Figure 15-17 The antenna 100 is shown in the elevation plane at low frequencies, illustrating its antenna radiation pattern. This antenna provides a wide beamwidth with low variation across a broad frequency range. Figure 22 The results shown are provided for illustrative purposes and not for limiting purposes. Alternative embodiments of the antenna and reflector may be configured differently and have the same characteristics as... Figure 22 The operation or performance parameters displayed are different from the operation or performance parameters shown.
[0083] Figure 23 Display usage Figure 18 The reflector shown in the image and Figure 19 The secondary reflector 400 shown in the image Figure 15-17 The antenna 100 is shown in the azimuth plane at high frequencies, illustrating its antenna radiation pattern. This antenna provides a wide beamwidth with low variation across a broad frequency range. Figure 23The results shown are provided for illustrative purposes and not for limiting purposes. Alternative embodiments of the antenna and reflector may be configured differently and have the same characteristics as... Figure 23 The operation or performance parameters displayed are different from the operation or performance parameters shown.
[0084] Figure 24 Display usage Figure 18 The reflector shown in the image and Figure 19 The secondary reflector 400 shown in the image Figure 15-17 The antenna 100 is shown in the elevation plane at high frequencies, illustrating its antenna radiation pattern. This antenna provides a wide beamwidth with low variation across a broad frequency range. Figure 24 The results shown are provided for illustrative purposes and not for limiting purposes. Alternative embodiments of the antenna and reflector may be configured differently and have the same characteristics as... Figure 24 The operation or performance parameters displayed are different from the operation or performance parameters shown.
[0085] Furthermore, this disclosure includes examples pursuant to the following terms:
[0086] Clause 1. An antenna comprising:
[0087] A radome having walls forming a chamber, the radome having a top, bottom, front, rear, first side, and second side; and
[0088] The antenna assembly received in the cavity includes a multi-band antenna element and a reflector spaced apart from and facing the antenna element.
[0089] Multiband antenna elements include high-frequency band antennas that include high-frequency band radiating arms;
[0090] Multiband antenna elements include low-frequency band antennas that include low-frequency band radiating arms;
[0091] The reflector includes a main reflector panel, a front reflector wing in front of the main reflector panel, a rear reflector wing behind the main reflector panel, main sidewalls on opposite sides of the main reflector panel, front sidewalls on opposite sides of the front reflector wing, rear sidewalls on opposite sides of the rear reflector wing, a front inner wall at the interface between the main reflector panel and the front reflector wing, and a rear inner wall at the interface between the main reflector panel and the rear reflector wing.
[0092] Clause 2. The antenna according to Clause 1, wherein the front reflector wing is non-coplanar and angled with the main reflector panel, and the rear reflector wing is non-coplanar and angled with the main reflector panel.
[0093] Clause 3. The antenna according to any one of Clauses 1 to 2, wherein the front reflector wing is connected to the main reflector panel at a bend, the front reflector wing bends upward at an angle relative to the main reflector panel, and the rear reflector wing is connected to the main reflector panel at a bend, the rear reflector wing bends upward at an angle relative to the main reflector panel.
[0094] Clause 4. The antenna according to any one of Clauses 1-3, wherein the main sidewall has a different height compared to the front and rear sidewalls.
[0095] Clause 5. The antenna according to any one of Clauses 1-4, wherein the front inner wall and the rear inner wall have different heights.
[0096] Clause 6. The antenna according to any one of Clauses 1-5, wherein the front reflector wing includes a front notch aligned with the front inner wall, and the rear reflector wing includes a rear notch aligned with the rear inner wall.
[0097] Clause 7. The antenna according to any one of Clauses 1-6, wherein the front inner wall is parallel to the rear inner wall, and the main side wall is oriented perpendicular to the front and rear inner walls.
[0098] Clause 8. The antenna according to any one of Clauses 1-7 further includes a secondary reflector spaced apart from the multi-band antenna elements, the secondary reflector including a central panel aligned with the high-frequency band radiating arm and the low-frequency band radiating arm.
[0099] Clause 9. The antenna as described in Clause 8, wherein the reflector is positioned between the secondary reflector and the multi-band antenna element.
[0100] Clause 10. The antenna as described in Clause 8, wherein the secondary reflector comprises a main panel and wing panels extending from the main panel at an angle.
[0101] Clause 11. The antenna according to Clause 8, wherein the secondary reflector is coupled to the inner surface of the bottom of the radome, the reflector is suspended in the cavity between the top and bottom of the radome, and the multi-band antenna element is located near the top of the radome.
[0102] Clause 12. The antenna according to any one of Clauses 1-11, wherein the high-frequency radiating arm is aligned with the main reflector panel, and the low-frequency radiating arm is aligned with the main reflector panel, the front reflector wing, and the rear reflector wing.
[0103] Clause 13. The antenna according to any one of Clauses 1-12, wherein the high-frequency band antenna is a dipole antenna and the low-frequency band antenna is a dipole antenna.
[0104] Clause 14. The antenna according to any one of Clauses 1-13, wherein the antenna assembly includes an antenna printed circuit board, a high-frequency radiating arm formed on one or more layers of the antenna printed circuit board, and a low-frequency radiating arm formed on one or more layers of the antenna printed circuit board.
[0105] Clause 15. The antenna according to any one of Clauses 1-14, wherein the antenna assembly includes a balun-unbalanced radiating element.
[0106] Clause 16. The antenna according to any one of Clauses 1-15, wherein the antenna assembly includes lumped components.
[0107] Clause 17. The antenna according to any one of Clauses 1-16 further includes an antenna feed, the antenna feed including an RF connector and a coaxial cable connected to the feed to the antenna assembly.
[0108] Clause 18. The antenna as described in Clause 17, wherein the reflector includes a slot for receiving a coaxial cable, allowing the coaxial cable to pass through the reflector.
[0109] Clause 19. The antenna according to any one of Clauses 1-18, wherein the antenna assembly has a wide azimuth beamwidth of more than 90° and an elevation beamwidth of more than 60°.
[0110] Clause 20. The antenna according to any one of Clauses 1-19, wherein the high-frequency band antenna is operable in a frequency range between 5.15 and 7.125 GHz and the low-frequency band antenna is operable in a frequency range between 2.4 and 2.5 GHz.
[0111] Clause 21. The antenna according to any one of Clauses 1-20, wherein the reflector and the multi-band antenna element have a variable spacing from front to back.
[0112] Clause 22. The antenna as described in Clause 21, wherein the front reflector wing and the rear reflector wing are closer to the multiband antenna element and the main reflector panel.
[0113] Clause 23. An antenna assembly comprising:
[0114] A multi-band antenna element, comprising: a high-frequency band antenna including a high-frequency band radiating arm and a low-frequency band antenna including a low-frequency band radiating arm; and
[0115] A reflector spaced apart from and facing the multi-band antenna element, the reflector including a main reflector panel, a front reflector wing in front of the main reflector panel, a rear reflector wing behind the main reflector panel, main sidewalls on opposite sides of the main reflector panel, front sidewalls on opposite sides of the front reflector wing, rear sidewalls on opposite sides of the rear reflector wing, a front inner wall at the interface between the main reflector panel and the front reflector wing, and a rear inner wall at the interface between the main reflector panel and the rear reflector wing.
[0116] Clause 24. An antenna assembly comprising:
[0117] A multi-band antenna element, comprising: a high-frequency band antenna including a high-frequency band radiating arm and a low-frequency band antenna including a low-frequency band radiating arm;
[0118] A reflector spaced apart from and facing a multi-band antenna element, the reflector including a main reflector panel, a front reflector wing in front of the main reflector panel, a rear reflector wing behind the main reflector panel, main sidewalls on opposite sides of the main reflector panel, front sidewalls on opposite sides of the front reflector wing, rear sidewalls on opposite sides of the rear reflector wing, a front inner wall at the interface between the main reflector panel and the front reflector wing, and a rear inner wall at the interface between the main reflector panel and the rear reflector wing; and
[0119] A secondary reflector spaced apart from the multi-band antenna elements, the secondary reflector including a central panel aligned with the high-frequency band radiating arm and the low-frequency band radiating arm.
[0120] Clause 25. The antenna assembly as described in Clause 24, wherein the reflector is positioned between the secondary reflector and the multi-band antenna element.
[0121] Clause 26. The antenna assembly according to any one of Clauses 24-25, wherein the secondary reflector comprises a main panel and wing panels extending from the main panel at an angle.
[0122] Clause 27. The antenna assembly according to any one of Clauses 24-26, wherein the secondary reflector is coupled to the inner surface of the bottom of the radome, the reflector is suspended in a cavity between the top and bottom of the radome, and the multi-band antenna element is located near the top of the radome.
[0123] Clause 28. The antenna assembly according to any one of Clauses 24-27, wherein the front reflector wing is non-coplanar and angled with the main reflector panel, and the rear reflector wing is non-coplanar and angled with the main reflector panel.
[0124] Clause 29. The antenna assembly according to any one of Clauses 24-28, wherein the front reflector wing is connected to the main reflector panel at a bend, the front reflector wing being bent upward at an angle relative to the main reflector panel, and the rear reflector wing is connected to the main reflector panel at a bend, the rear reflector wing being bent upward at an angle relative to the main reflector panel.
[0125] Clause 30. The antenna assembly according to any one of Clauses 24-29, wherein the main sidewall has a different height compared to the front and rear sidewalls.
[0126] Clause 31. The antenna assembly according to any one of Clauses 24-30, wherein the front inner wall and the rear inner wall have different heights.
[0127] Clause 32. The antenna assembly according to any one of Clauses 24-31, wherein the rear reflector wing includes a rear notch aligned with the rear inner wall.
[0128] Clause 33. The antenna assembly according to any one of Clauses 24-32, wherein the front inner wall is parallel to the rear inner wall, and the main side wall is oriented perpendicular to the front and rear inner walls.
[0129] Clause 34. The antenna assembly according to any one of Clauses 24-33, wherein the high-frequency radiating arm is aligned with the main reflector panel, and the low-frequency radiating arm is aligned with the main reflector panel, the front reflector wing, and the rear reflector wing.
[0130] Clause 35. An antenna assembly according to any one of Clauses 24-34, wherein the high-frequency band antenna is a dipole antenna and the low-frequency band antenna is a dipole antenna.
[0131] Clause 36. The antenna assembly according to any one of Clauses 24-35, wherein the antenna assembly includes an antenna printed circuit board, a high-frequency radiating arm formed on one or more layers of the antenna printed circuit board, and a low-frequency radiating arm formed on one or more layers of the antenna printed circuit board.
[0132] Clause 37. The antenna assembly according to any one of Clauses 24-36, wherein the antenna assembly includes a balun-unbalanced radiating element.
[0133] Clause 38. The antenna assembly according to any one of Clauses 24-37, wherein the antenna assembly includes lumped components.
[0134] Clause 39. The antenna assembly according to any one of Clauses 24-38 further includes an antenna feed, the antenna feed including an RF connector and a coaxial cable coupled to the feed of the antenna assembly.
[0135] Clause 40. The antenna assembly as described in Clause 39, wherein the reflector includes a slot for receiving a coaxial cable, allowing the coaxial cable to pass through the reflector.
[0136] Clause 41. The antenna assembly according to any one of Clauses 24-40, wherein the antenna assembly has a wide azimuth beamwidth of more than 90° and an elevation beamwidth of more than 60°.
[0137] Clause 42. The antenna assembly according to any one of Clauses 24-41, wherein the high-frequency band antenna is operable in a frequency range between 5.15 and 7.125 GHz and the low-frequency band antenna is operable in a frequency range between 2.4 and 2.5 GHz.
[0138] Clause 43. The antenna assembly according to any one of Clauses 24-42, wherein the reflector and the multi-band antenna element have a variable spacing from front to back.
[0139] Clause 44. The antenna assembly as described in Clause 43, wherein the front reflector wing and the rear reflector wing are closer to the multiband antenna element and the main reflector panel.
[0140] Clause 45. The antenna assembly as described in Clause 23 further includes a secondary reflector spaced apart from the multi-band antenna elements, the secondary reflector including a central panel aligned with the high-frequency band radiating arm and the low-frequency band radiating arm.
[0141] Clause 46. The antenna assembly as described in Clause 45, wherein the reflector is positioned between the secondary reflector and the multi-band antenna element.
[0142] Clause 47. The antenna assembly as described in Clause 45, wherein the secondary reflector comprises a main panel and wing panels extending from the main panel at an angle.
[0143] Clause 48. The antenna assembly according to Clause 45, wherein the secondary reflector is coupled to the inner surface of the bottom of the radome, the reflector is suspended in a cavity between the top and bottom of the radome, and the multi-band antenna element is located near the top of the radome.
[0144] Clause 49. The antenna assembly according to any one of Clauses 23 and 45, wherein the front reflector wing is non-coplanar and angled with the main reflector panel, and the rear reflector wing is non-coplanar and angled with the main reflector panel.
[0145] Clause 50. The antenna assembly according to any one of Clauses 23 and 45-49, wherein the front reflector wing is connected to the main reflector panel at a bend, the front reflector wing being bent upward at an angle relative to the main reflector panel, and the rear reflector wing is connected to the main reflector panel at a bend, the rear reflector wing being bent upward at an angle relative to the main reflector panel.
[0146] Clause 51. The antenna assembly according to any one of Clauses 23 and 45-50, wherein the main sidewall has a different height compared to the front and rear sidewalls.
[0147] Clause 52. The antenna assembly according to any one of Clauses 23 and 45-51, wherein the front inner wall and the rear inner wall have different heights.
[0148] Clause 53. The antenna assembly according to any one of Clauses 23 and 45-52, wherein the rear reflector wing includes a rear notch aligned with the rear inner wall.
[0149] Clause 54. The antenna assembly according to any one of Clauses 23 and 45-53, wherein the front inner wall is parallel to the rear inner wall and the main side wall is oriented perpendicular to the front and rear inner walls.
[0150] Clause 55. The antenna assembly according to any one of Clauses 23 and 45-54, wherein the high-frequency radiating arm is aligned with the main reflector panel, and the low-frequency radiating arm is aligned with the main reflector panel, the front reflector wing, and the rear reflector wing.
[0151] Clause 56. The antenna assembly pursuant to any one of Clauses 23 and 45-55, wherein the high-frequency band antenna is a dipole antenna and the low-frequency band antenna is a dipole antenna.
[0152] Clause 57. The antenna assembly according to any one of Clauses 23 and 45-56, wherein the antenna assembly includes an antenna printed circuit board, a high-frequency radiating arm formed on one or more layers of the antenna printed circuit board, and a low-frequency radiating arm formed on one or more layers of the antenna printed circuit board.
[0153] Clause 58. The antenna assembly according to any one of Clauses 23 and 45-57, wherein the antenna assembly includes a balun-unbalanced radiating element.
[0154] Clause 59. The antenna assembly according to any one of Clauses 23 and 45-58, wherein the antenna assembly includes lumped components.
[0155] Clause 60. The antenna assembly according to any one of Clauses 23 and 45-59 further includes an antenna feed, the antenna feed including an RF connector and a coaxial cable coupled to the feed of the antenna assembly.
[0156] Clause 61. The antenna assembly as described in Clause 60, wherein the reflector includes a slot for receiving a coaxial cable, allowing the coaxial cable to pass through the reflector.
[0157] Clause 62. The antenna assembly according to any one of Clauses 23 and 45-61, wherein the antenna assembly has a wide azimuth beamwidth of more than 90° and an elevation beamwidth of more than 60°.
[0158] Clause 63. The antenna assembly according to any one of Clauses 23 and 45-62, wherein the high-frequency band antenna is operable in a frequency range between 5.15 and 7.125 GHz and the low-frequency band antenna is operable in a frequency range between 2.4 and 2.5 GHz.
[0159] Clause 64. The antenna assembly according to any one of Clauses 23 and 45-63, wherein the reflector and the multi-band antenna element have a variable spacing from front to back.
[0160] Clause 65. The antenna assembly as described in Clause 64, wherein the front reflector wing and the rear reflector wing are closer to the multiband antenna element and the main reflector panel.
[0161] It should be understood that the above description is intended to be illustrative and not restrictive. For example, the embodiments (and / or aspects thereof) described above may be used in combination with each other. Furthermore, many modifications may be made to adapt particular situations or materials to the teachings of the invention without departing from its scope. The dimensions, material types, orientations of various components, and quantities and positions of various components described herein are intended to define parameters of certain embodiments and are by no means restrictive, and are merely exemplary embodiments. Those skilled in the art will understand, upon reading the above description, that many other embodiments and modifications are within the spirit and scope of the claims. Therefore, the scope of the invention should be determined by reference to the appended claims and the full scope of the equivalents conferred by such claims. In the appended claims, the terms “comprising” and “wherein” are used as common language equivalents to the corresponding terms “including” and “in which”. Moreover, in the appended claims, the terms “first,” “second,” “third,” etc., are used only as labels and are not intended to impose numerical requirements on their objects. Furthermore, the limitations of the appended claims are not written in the “means plus function” format and are not intended to be interpreted based on 35 U.S.C. 112(f), unless and until such a limitation of claims explicitly uses the word “means” followed by an unstructured statement of “function”.
Claims
1. An antenna, comprising: A radome having walls forming a chamber, the radome having a top, a bottom, a front, a rear, a first side, and a second side; as well as An antenna assembly is received in the chamber, the antenna assembly including a multi-band antenna element and a reflector spaced apart from and facing the antenna element; The multi-band antenna element includes a high-frequency band antenna comprising a high-frequency band radiating arm; The multi-band antenna element includes a low-band antenna comprising a low-band radiating arm; The reflector includes a main reflector panel, a front reflector wing in front of the main reflector panel, a rear reflector wing behind the main reflector panel, main sidewalls on opposite sides of the main reflector panel, front sidewalls on opposite sides of the front reflector wing, rear sidewalls on opposite sides of the rear reflector wing, a front inner wall at the interface between the main reflector panel and the front reflector wing, and a rear inner wall at the interface between the main reflector panel and the rear reflector wing.
2. The antenna according to claim 1, wherein, The front reflector wing is at an angle to the main reflector panel, which is not coplanar, and the rear reflector wing is at an angle to the main reflector panel, which is not coplanar.
3. The antenna according to claim 1, wherein, The front reflector wing is connected to the main reflector panel at a bend, and the front reflector wing bends upward at an angle relative to the main reflector panel. The rear reflector wing is connected to the main reflector panel at a bend, and the rear reflector wing bends upward at an angle relative to the main reflector panel.
4. The antenna according to claim 1, wherein, The main sidewall has a different height compared to the front and rear sidewalls.
5. The antenna according to claim 1, wherein, The front inner wall and the rear inner wall have different heights.
6. The antenna according to claim 1, wherein, The front reflector wing includes a front recess aligned with the front inner wall, and the rear reflector wing includes a rear recess aligned with the rear inner wall.
7. The antenna according to claim 1, wherein, The front inner wall is parallel to the rear inner wall, and the main side wall is oriented perpendicular to both the front and rear inner walls.
8. The antenna of claim 1 further includes a secondary reflector spaced apart from the multi-band antenna element, the secondary reflector including a central panel aligned with the high-frequency radiating arm and the low-frequency radiating arm.
9. The antenna according to claim 8, wherein, The reflector is positioned between the secondary reflector and the multi-band antenna element.
10. The antenna according to claim 8, wherein, The secondary reflector includes a main panel and wing panels extending from the main panel at an angle.
11. The antenna according to claim 8, wherein, The secondary reflector is attached to the inner surface of the bottom of the radome, the reflector is suspended in the chamber between the top and bottom of the radome, and the multi-band antenna element is located near the top of the radome.
12. The antenna according to claim 1, wherein, The high-frequency radiating arm is aligned with the main reflector panel, and the low-frequency radiating arm is aligned with the main reflector panel, the front reflector wing, and the rear reflector wing.
13. The antenna according to claim 1, wherein, The high-frequency band antenna is a dipole antenna, and the low-frequency band antenna is a dipole antenna.
14. The antenna according to claim 1, wherein, The antenna assembly includes an antenna printed circuit board, the high-frequency radiating arm is formed on one or more layers of the antenna printed circuit board, and the low-frequency radiating arm is formed on one or more layers of the antenna printed circuit board.
15. The antenna according to claim 1, wherein, The antenna assembly includes a balanced-unbalanced radiating element.
16. The antenna according to claim 1, wherein, The antenna assembly includes lumped components.
17. The antenna of claim 1, further comprising an antenna feed, the antenna feed including an RF connector and a coaxial cable connected to the feed of the antenna assembly.
18. The antenna according to claim 17, wherein, The reflector includes a slot for receiving the coaxial cable, allowing the coaxial cable to pass through the reflector.
19. The antenna according to claim 1, wherein, The antenna assembly has a wide azimuth beamwidth of more than 90° and an elevation beamwidth of more than 60°.
20. The antenna according to claim 1, wherein, The high-frequency band antenna can operate in a frequency range between 5.15 and 7.125 GHz, and the low-frequency band antenna can operate in a frequency range between 2.4 and 2.5 GHz.
21. The antenna according to claim 1, wherein, The reflector and the multi-band antenna element have a variable spacing from front to back.
22. The antenna according to claim 21, wherein, The front reflector wing and the rear reflector wing are closer to the multi-band antenna element and the main reflector panel.
23. An antenna assembly, comprising: A multi-band antenna element, comprising a high-frequency band antenna including a high-frequency band radiating arm and a low-frequency band antenna including a low-frequency band radiating arm; as well as A reflector spaced apart from and facing the multi-band antenna element, the reflector comprising a main reflector panel, a front reflector wing in front of the main reflector panel, a rear reflector wing behind the main reflector panel, main sidewalls on opposite sides of the main reflector panel, front sidewalls on opposite sides of the front reflector wing, rear sidewalls on opposite sides of the rear reflector wing, a front inner wall at the interface between the main reflector panel and the front reflector wing, and a rear inner wall at the interface between the main reflector panel and the rear reflector wing.
24. An antenna assembly, comprising: A multi-band antenna element, comprising a high-frequency band antenna including a high-frequency band radiating arm and a low-frequency band antenna including a low-frequency band radiating arm; A reflector spaced apart from and facing the multi-band antenna element, the reflector comprising a main reflector panel, a front reflector wing in front of the main reflector panel, a rear reflector wing behind the main reflector panel, main sidewalls on opposite sides of the main reflector panel, front sidewalls on opposite sides of the front reflector wing, rear sidewalls on opposite sides of the rear reflector wing, a front inner wall at the interface between the main reflector panel and the front reflector wing, and a rear inner wall at the interface between the main reflector panel and the rear reflector wing; as well as A secondary reflector spaced apart from the multi-band antenna element, the secondary reflector including a central panel aligned with the high-frequency band radiating arm and the low-frequency band radiating arm.