技术领域technical field
本发明属于卫星通信天线领域，尤其涉及一种双频双极化共口径波导喇叭平面阵列天线，特别针对在卫星应急机动通信中使用。The invention belongs to the field of satellite communication antennas, in particular to a dual-frequency dual-polarization common-aperture waveguide horn planar array antenna, especially for use in satellite emergency mobile communications.
背景技术Background technique
平面阵列卫星天线在国际上已经开始少量生产和使用，并且正在形成一种新的发展趋势，代表着当前国际卫星通信应用的新方向。已有平面阵列卫星天线大都采用的是振子微带平面阵列技术和波导缝隙平面阵列技术。Planar array satellite antennas have been produced and used in a small amount in the world, and a new development trend is being formed, which represents a new direction of current international satellite communication applications. Most of the existing planar array satellite antennas adopt the oscillator microstrip planar array technology and the waveguide slot planar array technology.
振子微带平面阵列天线通过平板上排列有序的半波振子将电磁波辐射到空中。射频耦合馈电网络采用微波技术中的微带电路技术。The oscillator microstrip planar array antenna radiates electromagnetic waves into the air through the ordered half-wave oscillators arranged on the plate. The RF coupling feed network adopts microstrip circuit technology in microwave technology.
振子微带平面阵列天线中采用的微带是印制在电路板上的，采用双微带正交馈电方式，在方形辐射贴片上形成双频点谐振，可以实现双频双极化共口径平板天线。但是，微带振子式天线的馈电效率低，容易激励表面波，天线带宽窄，承载功率低。受国内技术条件和制造工艺的限制，常见的产品无法实现收发共口径，还是采用收发相分离的两块天线板。The microstrip used in the vibrator microstrip planar array antenna is printed on the circuit board, and the dual-microstrip orthogonal feeding method is used to form dual-frequency point resonance on the square radiation patch, which can realize dual-frequency dual-polarization common Aperture panel antenna. However, the feeding efficiency of the microstrip vibrator antenna is low, it is easy to excite surface waves, the antenna bandwidth is narrow, and the carrying power is low. Restricted by domestic technical conditions and manufacturing processes, common products cannot achieve the same aperture for transmitting and receiving, and still use two antenna boards that separate the transmitting and receiving phases.
波导缝隙平面阵列天线通过波导壁上排列有序的多个缝隙将电磁波辐射到空中。波导缝隙平面阵列天线采用波导馈电，有利于减少馈电损耗，提高天线效率和承载功率。但是同一根波导上的缝隙只能支持一个极化方向，为实现双极化就必须把相互正交极化的缝隙波导交替排列在平面内，无法通过天线阵列中的天线单元真正形成双频、双极化、共口径的平面阵列天线。而这样的缝隙波导排列拉大了辐射源的间隔，更容易出现栅瓣，影响天线的性能。The waveguide slot planar array antenna radiates electromagnetic waves into the air through multiple slots arranged in an orderly manner on the waveguide wall. The waveguide slot planar array antenna adopts waveguide feeding, which is beneficial to reduce feeding loss and improve antenna efficiency and carrying power. However, the slots on the same waveguide can only support one polarization direction. In order to achieve dual polarization, the slot waveguides that are mutually orthogonally polarized must be arranged alternately in the plane, and the antenna elements in the antenna array cannot truly form dual-frequency, Dual-polarized, co-aperture planar array antenna. However, such an array of slotted waveguides widens the distance between radiation sources, making grating lobes more likely to occur and affecting the performance of the antenna.
发明内容Contents of the invention
为了至少解决现有技术中平面阵列卫星天线存在的不易实现双频双极化共口径的问题，本发明实施例提供了一种双频双极化共口径波导喇叭平面阵列天线，其由多个天线单元在平面上以阵列形式排列而形成；每个所述天线单元由方形波导喇叭和波导正交模耦合器组合而成。In order to at least solve the problem that the planar array satellite antenna in the prior art is not easy to achieve dual-frequency dual-polarization common-aperture, the embodiment of the present invention provides a dual-frequency dual-polarization common-aperture waveguide horn planar array antenna, which consists of multiple The antenna units are arranged in an array on a plane; each antenna unit is composed of a square waveguide horn and a waveguide orthogonal mode coupler.
在如上所述的波导喇叭平面阵列天线中，优选地，所述方形波导喇叭为三层阶梯过渡的方形角锥喇叭，其喇叭口径的形状为方形。In the waveguide horn planar array antenna described above, preferably, the square waveguide horn is a square pyramid horn with three layers of stepped transition, and the shape of the horn aperture is square.
在每个所述方形波导喇叭的口径上添加了十字栅条。Cross grating bars are added to the aperture of each square waveguide horn.
在如上所述的波导喇叭平面阵列天线中，优选地，所述波导正交模耦合器为纵向锥变分支结构的正交模耦合器。In the waveguide horn planar array antenna described above, preferably, the waveguide orthogonal mode coupler is an orthogonal mode coupler with a longitudinal tapered branch structure.
在如上所述的波导喇叭平面阵列天线中，优选地，所述波导正交模耦合器的公共端口的尺寸与所述方形波导喇叭的波导端口尺寸相同。In the waveguide horn planar array antenna described above, preferably, the size of the common port of the waveguide orthogonal mode coupler is the same as the size of the waveguide port of the square waveguide horn.
在如上所述的波导喇叭平面阵列天线中，优选地，所述平面阵列天线的天线单元排列方式为平面正方形排列。In the waveguide horn planar array antenna described above, preferably, the antenna elements of the planar array antenna are arranged in a planar square arrangement.
在如上所述的波导喇叭平面阵列天线中，优选地，所述方形波导喇叭和所述波导正交模耦合器均采用了薄壁结构，各自的壁厚为1.5-2.5mm。In the waveguide horn planar array antenna described above, preferably, both the square waveguide horn and the waveguide orthogonal mode coupler adopt a thin-walled structure, each with a wall thickness of 1.5-2.5mm.
在如上所述的波导喇叭平面阵列天线中，优选地，所述平面阵列天线的的天线口面电场加权函数为泰勒分布函数。In the waveguide horn planar array antenna described above, preferably, the electric field weighting function of the antenna port of the planar array antenna is a Taylor distribution function.
在如上所述的波导喇叭平面阵列天线中，优选地，所述方形波导喇叭、所述十字栅条和所述波导正交模耦合器均由金属材料制成。In the waveguide horn planar array antenna described above, preferably, the square waveguide horn, the cross grid bars and the waveguide orthogonal mode coupler are all made of metal materials.
在如上所述的波导喇叭平面阵列天线中，优选地，所述波导喇叭平面阵列天线的外部轮廓尺寸长、宽、高分别为500mm、500mm、51.2mm。In the above-mentioned waveguide horn planar array antenna, preferably, the external outline dimensions of the waveguide horn planar array antenna are 500 mm, 500 mm, and 51.2 mm in length, width, and height, respectively.
综上所述，本发明带来的有益效果如下：In summary, the beneficial effects brought by the present invention are as follows:
在卫星应急机动通信中，本发明产品的一体化天线结构，使天线在应用中不再需要像抛物反射面天线那样进行现场拼装和分解，为快速开通卫星应急通信提供了便利。In the satellite emergency mobile communication, the integrated antenna structure of the product of the present invention makes the antenna no longer need to be assembled and disassembled on site like the parabolic reflector antenna in application, which provides convenience for the rapid opening of satellite emergency communication.
在平面阵列天线上实现了双频率、双极化、共口径，只需要一副天线就能满足卫星通信全双工的技术要求。Dual-frequency, dual-polarization, and common-aperture are realized on the planar array antenna, and only one antenna is needed to meet the technical requirements of full-duplex satellite communication.
通过对天线口面照射函数以泰勒分布函数进行加权处理，对旁瓣的抑制效果可以达到-22dB，远低于CCIR的要求(14dB)，也明显低于传统反射面天线的第一旁瓣指标(14～17dB)。低旁瓣天线有利于提高接收信号的信噪比，同时减少发射电波对邻星的干扰。By weighting the illumination function of the antenna aperture with the Taylor distribution function, the sidelobe suppression effect can reach -22dB, which is far lower than the CCIR requirement (14dB), and is also significantly lower than the first sidelobe index of the traditional reflector antenna (14~17dB). The low side lobe antenna is beneficial to improve the signal-to-noise ratio of the received signal, and at the same time reduce the interference of transmitted radio waves to neighboring stars.
通过在波导喇叭口上增加十字栅条的方法，提高天线口面有效辐射元的空间分布频率，从而拉大栅瓣的衍射角度，使栅瓣得到了很好地抑制。By adding cross grid strips on the waveguide horn, the spatial distribution frequency of the effective radiation elements on the antenna mouth surface is increased, thereby enlarging the diffraction angle of the grating lobes and suppressing the grating lobes well.
波导喇叭平面阵列天线的天线单元，由方形波导喇叭和波导正交模耦合器组合而成，配以波导传输线组成的接收和发射馈电网络，整个天线全部由波导器件组成。波导器件传输插损小、承载功率大，提高了天线的整机效率。The antenna unit of the waveguide horn planar array antenna is composed of a square waveguide horn and a waveguide orthogonal mode coupler, and is equipped with a receiving and transmitting feed network composed of a waveguide transmission line. The entire antenna is composed of waveguide devices. The transmission insertion loss of the waveguide device is small, and the carrying power is large, which improves the overall efficiency of the antenna.
天线效率的提高，有利于在同等天线口径下，获得更高的天线增益，实现更高的传输数率。本发明的天线口径面积为500mm×500mm，天线效率可以达到85％以上，天线增益可等效为口径为0.7m的普通抛物反射面天线(后者的天线有效面积是前者的1.5倍)。The improvement of antenna efficiency is conducive to obtaining higher antenna gain and higher transmission data rate under the same antenna aperture. The aperture area of the antenna of the present invention is 500mm×500mm, the antenna efficiency can reach more than 85%, and the antenna gain can be equivalent to a common parabolic reflector antenna with an aperture of 0.7m (the effective area of the antenna of the latter is 1.5 times that of the former).
方形波导喇叭和波导正交模耦合器的锥变波导段均采用阶梯过渡的方式。阶梯过渡方式的过渡段长度短、结构紧凑、薄壁结构，有利于减少天线的整体尺寸和重量。Both the tapered waveguide section of the square waveguide horn and the waveguide orthogonal mode coupler adopt a step transition method. The transition section of the stepped transition mode is short in length, compact in structure, and thin-walled in structure, which is conducive to reducing the overall size and weight of the antenna.
低旁瓣和承载功率大的特点，有助于天线与大功率放大器配套使用，满足卫星通信高速业务传输需要。The characteristics of low side lobe and high carrying power help the antenna to be used in conjunction with a high-power amplifier to meet the needs of high-speed satellite communication business transmission.
附图说明Description of drawings
图1为本发明实施例提供的一种方形波导喇叭的立体结构示意图；FIG. 1 is a schematic diagram of a three-dimensional structure of a square waveguide horn provided by an embodiment of the present invention;
图2为本发明实施例提供的一种正交模耦合器的立体结构示意图；FIG. 2 is a schematic diagram of a three-dimensional structure of an orthogonal mode coupler provided by an embodiment of the present invention;
图3为本发明实施例提供的一种天线单元的波导外部立体结构示意图(喇叭口未带金属十字栅条)；FIG. 3 is a schematic diagram of an external three-dimensional structure of a waveguide of an antenna unit provided by an embodiment of the present invention (the bell mouth does not have metal cross grid bars);
图4为图发明实施例提供的一种天线单元的波导内部立体结构示意图(喇叭口未带金属十字栅条)；Fig. 4 is a schematic diagram of the internal three-dimensional structure of the waveguide of an antenna unit provided by the embodiment of the invention (the bell mouth is not equipped with metal cross grid bars);
图5为本发明实施例提供的另一种天线单元(喇叭口带金属十字栅条)的立体结构示意图；5 is a schematic diagram of the three-dimensional structure of another antenna unit (horn mouth with metal cross grid bars) provided by the embodiment of the present invention;
图6为本发明实施例提供的一种双频双极化共口径波导喇叭平面阵列天线的平面结构正面示意图；FIG. 6 is a schematic front view of a planar structure of a dual-frequency dual-polarization common-aperture waveguide horn planar array antenna provided by an embodiment of the present invention;
图7为本发明实施例提供的一种双频双极化共口径波导喇叭平面阵列天线的平面结构斜侧面示意图；FIG. 7 is a schematic oblique side view of a planar structure of a dual-frequency dual-polarization common-aperture waveguide horn planar array antenna provided by an embodiment of the present invention;
其中，图中符号说明如下：Among them, the symbols in the figure are explained as follows:
1天线单元、3双频双极化共口径波导喇叭平面阵列天线、11方形波导喇叭、12波导正交模耦合器、120公共端口、121直通端口、122耦合分支端口、201金属十字栅条。1 antenna unit, 3 dual-frequency dual-polarized common-aperture waveguide horn planar array antennas, 11 square waveguide horns, 12 waveguide orthogonal mode couplers, 120 common ports, 121 through ports, 122 coupling branch ports, and 201 metal cross grid bars.
具体实施方式Detailed ways
下面结合附图和具体实施方式对本发明做进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
参见图1～图7，本发明实施例提供了一种双频双极化共口径波导喇叭平面阵列天线，其由多个天线单元1在平面上以阵列形式排列而形成。每个天线单元1包括：方形波导喇叭11和波导正交模耦合器12，由方形波导喇叭11和波导正交模耦合器12组合在一起，形成天线单元1。Referring to FIGS. 1 to 7 , an embodiment of the present invention provides a dual-frequency dual-polarization common-aperture waveguide horn planar array antenna, which is formed by arranging a plurality of antenna units 1 in an array on a plane. Each antenna unit 1 includes: a square waveguide horn 11 and a waveguide orthogonal mode coupler 12 , the antenna unit 1 is formed by combining the square waveguide horn 11 and the waveguide orthogonal mode coupler 12 .
方形波导喇叭11的口径形状为方形，即喇叭的四个边长相等。在方形喇叭中可以激励两个相互垂直的线性极化波，以此满足双频双极化的要求。The aperture shape of the square waveguide horn 11 is square, that is, the four sides of the horn are equal in length. Two mutually perpendicular linearly polarized waves can be excited in a square horn, so as to meet the requirements of dual frequency and dual polarization.
在Ku波段卫星通信中，收发频段相隔2GHz，为展宽频段改善阻抗匹配，使该波导喇叭在接收和发射频段内都具有良好的阻抗匹配，方形波导喇叭11的开口没有采用渐变过渡的方式，而是采用了阶梯过渡的方式。本发明阵列天线中的方形波导喇叭11是一个三层阶梯过渡的方形角锥喇叭。In the Ku-band satellite communication, the transmitting and receiving frequency bands are separated by 2 GHz, and the impedance matching is improved for widening the frequency band, so that the waveguide horn has good impedance matching in the receiving and transmitting bands. The opening of the square waveguide horn 11 does not adopt a gradual transition method. Instead, a step transition is adopted. The square waveguide horn 11 in the array antenna of the present invention is a square pyramid horn with three layers of stepped transition.
方形波导喇叭11是本平面阵列天线的基本辐射体。The square waveguide horn 11 is the basic radiator of the planar array antenna.
波导正交模耦合器12用来分离方形波导喇叭11中的两个正交极化波，它是卫星通信天线中用来分离收/发信号(即收信号和发信号)的重要微波器件。本发明采用的波导正交模耦合器12是一种基于纵向锥变分支结构的波导正交模耦合器，它的公共端口120为方形波导端口，尺寸与方形波导喇叭11末端(图1中右端)的波导端口相同。这样，波导正交模耦合器12可以与方形波导喇叭11直接组合相接，不需要再添加过渡段。The waveguide orthogonal mode coupler 12 is used to separate two orthogonally polarized waves in the square waveguide horn 11, and it is an important microwave device used to separate receiving/sending signals (ie, receiving and sending signals) in satellite communication antennas. The waveguide orthogonal mode coupler 12 that the present invention adopts is a kind of waveguide orthogonal mode coupler based on the vertical taper variable branch structure, and its common port 120 is a square waveguide port, and its size is the same as the end of the square waveguide horn 11 (the right end in Fig. 1 ) with the same waveguide ports. In this way, the waveguide orthogonal mode coupler 12 can be directly combined with the square waveguide horn 11 without adding a transition section.
从方形波导喇叭11进入波导正交模耦合器12的垂直极化波TE10可以通过锥变波导段，由波导正交模耦合器12的直通端口121输出。对于正交的水平极化波TE01，锥变波导段对它形成短路并且被反射，使其无法从直通端口121通过。它只能经由耦合分支窗口122被耦合到分支波导中。本发明中的锥变波导段采用了三级阶梯完成过渡。The vertically polarized wave TE10 entering the waveguide orthogonal mode coupler 12 from the square waveguide horn 11 can pass through the tapered waveguide section and output from the through port 121 of the waveguide orthogonal mode coupler 12 . For the orthogonal horizontally polarized wave TE01 , the tapered waveguide section short-circuits it and is reflected so that it cannot pass through the through port 121 . It can only be coupled into the branch waveguide via the coupling branch window 122 . The tapered waveguide section in the present invention uses three steps to complete the transition.
波导正交模耦合器12是本平面阵列天线的基本耦合体。The waveguide orthogonal mode coupler 12 is the basic coupling body of the planar array antenna.
将天线单元1排列在一个平面内，便组成了波导喇叭平面阵列天线的辐射面和耦合面。Arranging the antenna elements 1 in a plane constitutes the radiation surface and the coupling surface of the waveguide horn planar array antenna.
为方便并联馈电，该波导喇叭平面阵列天线以方形阵列形式排列，即多个天线单元排列成一个方形阵列。下面以16×16个天线单元组成的方形阵列为例，对排列过程进行说明。To facilitate parallel feeding, the waveguide horn planar array antenna is arranged in a square array, that is, multiple antenna elements are arranged in a square array. Taking a square array composed of 16×16 antenna elements as an example, the arrangement process will be described below.
先以4个天线单元组成2×2元的天线基本阵列，再以4个2×2元的天线基本阵列组成一个4×4元的天线阵列，然后以4个4×4元的天线阵列组成一个8×8元的天线阵列，最后，以4个8×8元天线阵列组成16×16元平面阵列天线3，如图6-7所示。在其他的实施例中，还可以采用其他组成阵方式，本实施例对此不进行限定。First, 4 antenna units are used to form a 2×2 element antenna basic array, and then 4 2×2 element antenna basic arrays are used to form a 4×4 element antenna array, and then 4 4×4 element antenna arrays are used to form An 8×8 element antenna array, finally, four 8×8 element antenna arrays are used to form a 16×16 element planar array antenna 3, as shown in Figure 6-7. In other embodiments, other ways of forming an array may also be used, which is not limited in this embodiment.
通过调整天线口面照射函数(天线面电场分布函数)，可以很好地抑制天线的旁瓣。本发明产品采用泰勒分布函数进行加权处理，使天线面中央区的口面照射幅度略高于边缘区域的照射幅度，使天线旁瓣得到了很好的抑制。The side lobe of the antenna can be well suppressed by adjusting the irradiation function of the antenna aperture (the electric field distribution function of the antenna surface). The product of the invention adopts the Taylor distribution function for weighting processing, so that the irradiation amplitude of the mouth surface in the central area of the antenna surface is slightly higher than that in the edge area, so that the side lobes of the antenna are well suppressed.
平面阵列天线的一个固有缺点是产生栅瓣。为将栅瓣远离天线主波束，方形波导喇叭在排列组阵时需要紧密相靠，即尽量减少辐射单元(即方形波导喇叭)之间的间隔。因此，本发明产品在方形波导喇叭等微波器件设计时均采用了薄壁结构，以最大限度地减少方形波导喇叭之间的中心间距，同时也减轻了天线的重量。天线单元1在排列组阵时，为使各天线单元紧密相靠，减少各天线单元之间的间隔，方形波导喇叭和其他微波器件均采用了薄壁结构设计，壁厚1.5-2.5mm。An inherent disadvantage of planar array antennas is the generation of grating lobes. In order to keep the grating lobes away from the main beam of the antenna, the square waveguide horns need to be close together when they are arranged in an array, that is, the distance between the radiating elements (that is, the square waveguide horns) should be minimized. Therefore, the product of the present invention adopts a thin-walled structure when designing microwave devices such as square waveguide horns, so as to minimize the center distance between square waveguide horns and reduce the weight of the antenna. When the antenna units 1 are arranged in an array, in order to make the antenna units close to each other and reduce the interval between the antenna units, the square waveguide horn and other microwave devices are designed with a thin-walled structure, with a wall thickness of 1.5-2.5mm.
为进一步改善天线的栅瓣指标，天线口面上又覆盖了一层栅格面，通过提高天线口面有效辐射元的空间分布频率，使电磁波衍射干涉后形成的栅瓣成份进一步远离主波束，从而起到对栅瓣的有效抑制作用。In order to further improve the grating lobe index of the antenna, the antenna mouth surface is covered with a layer of grid surface. By increasing the spatial distribution frequency of the effective radiation elements on the antenna mouth surface, the grating lobe components formed after electromagnetic wave diffraction interference are further away from the main beam. So as to effectively suppress the grating lobe.
天线口面上的栅格面的覆盖是通过在每一个喇叭口面上添加金属十字栅条201实现的，即十字栅条由金属材料制成，如图5所示。所以，本发明的波导喇叭平面阵列天线所采用的天线单元1均带有十字栅条，该栅条宽度1.5mm。The coverage of the grid surface on the antenna mouth surface is realized by adding a metal cross grid strip 201 on each horn mouth surface, that is, the cross grid strip is made of metal material, as shown in FIG. 5 . Therefore, the antenna units 1 used in the waveguide horn planar array antenna of the present invention all have cross grid bars, and the width of the grid bars is 1.5 mm.
方形波导喇叭11和波导正交模耦合器12均由金属材料制成，图4所示的天线单元为未带有十字栅条的天线单元，此时可将其称为第一天线单元，图5所示的天线单元为带有十字栅条的天线单元，此时可将其称为第二天线单元。波导喇叭平面阵列天线的外部轮廓尺寸为500×500×51.2mm，前述三个尺寸值分别对应长、宽、高的尺寸。Both the square waveguide horn 11 and the waveguide orthogonal mode coupler 12 are made of metal materials. The antenna unit shown in FIG. The antenna unit shown in 5 is an antenna unit with cross grid bars, which can be called the second antenna unit at this time. The outer outline dimension of the waveguide horn planar array antenna is 500×500×51.2mm, and the aforementioned three dimension values correspond to the dimensions of length, width and height respectively.
综上所述，本发明带来的有益效果如下：In summary, the beneficial effects brought by the present invention are as follows:
采用天线单元1制成的波导喇叭平面阵列天线，实现了双频率、双极化、共口径的特点，可以在同一副平面阵列天线上实现全双工卫星通信，克服了微带振子平面阵列天线和波导缝隙平面阵列天线的固有缺点和不足。The waveguide horn planar array antenna made of antenna unit 1 realizes the characteristics of dual frequency, dual polarization, and common aperture, and can realize full-duplex satellite communication on the same pair of planar array antennas, which overcomes the problem of microstrip oscillator planar array antennas. and the inherent disadvantages and deficiencies of waveguide slot planar array antennas.
通过对天线口面照射函数进行泰勒分布加权处理，对平面阵列天线的旁瓣抑制可以达到-22dB，远低于CCIR的要求(14dB)，也明显低于传统反射面天线的第一旁瓣指标(14～17dB)。低旁瓣天线有利于提高接收信号的信噪比，同时减少发射电波对邻星的干扰。By performing Taylor distribution weighting processing on the antenna surface illumination function, the sidelobe suppression of the planar array antenna can reach -22dB, which is far lower than the CCIR requirement (14dB), and is also significantly lower than the first sidelobe index of the traditional reflector antenna (14~17dB). The low side lobe antenna is beneficial to improve the signal-to-noise ratio of the received signal, and at the same time reduce the interference of transmitted radio waves to neighboring stars.
通过在波导喇叭口上增加十字栅条的方法，提高天线口面有效辐射元的空间分布频率，从而拉大栅瓣的衍射角度。测试结果表明，在主波束±60°的范围内，栅瓣得到了很好地抑制。By adding cross grid strips on the waveguide horn mouth, the spatial distribution frequency of the effective radiation elements on the antenna mouth surface is increased, thereby enlarging the diffraction angle of the grating lobe. The test results show that the grating lobes are well suppressed within the range of ±60° of the main beam.
方形角锥波导喇叭11和波导正交模耦合器12的锥变波导段均采用阶梯过渡的方式。阶梯过渡方式的过渡段长度短，结构紧凑，有利于减少天线的整体尺寸和重量。Both the tapered waveguide sections of the square pyramidal waveguide horn 11 and the waveguide orthogonal mode coupler 12 adopt a step transition method. The transition section of the stepped transition mode is short in length and compact in structure, which is beneficial to reduce the overall size and weight of the antenna.
波导喇叭平面阵列天线的辐射面和耦合面均由波导微波器件组成，配以波导传输线组成的接收和发射馈电网络，整个天线全部由波导器件组成。Both the radiation surface and the coupling surface of the waveguide horn planar array antenna are composed of waveguide microwave devices, together with the receiving and transmitting feed network composed of waveguide transmission lines, the entire antenna is composed of waveguide devices.
波导器件传输插损小、承载功率大，提高了天线的整机效率，可与大功率放大器配套使用，满足卫星通信高速业务传输需要。The waveguide device has small transmission insertion loss and high carrying power, which improves the overall efficiency of the antenna, and can be used in conjunction with a high-power amplifier to meet the high-speed business transmission needs of satellite communications.
由技术常识可知，本发明可以通过其它的不脱离其精神实质或必要特征的实施方案来实现。因此，上述公开的实施方案，就各方面而言，都只是举例说明，并不是仅有的。所有在本发明范围内或在等同于本发明的范围内的改变均被本发明包含。It can be known from common technical knowledge that the present invention can be realized through other embodiments without departing from its spirit or essential features. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are embraced by the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710892072.5ACN107658568B (en) | 2017-09-27 | 2017-09-27 | Dual-frequency dual-polarization common-aperture waveguide horn planar array antenna |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710892072.5ACN107658568B (en) | 2017-09-27 | 2017-09-27 | Dual-frequency dual-polarization common-aperture waveguide horn planar array antenna |
| Publication Number | Publication Date |
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| CN107658568Atrue CN107658568A (en) | 2018-02-02 |
| CN107658568B CN107658568B (en) | 2024-11-05 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710892072.5AActiveCN107658568B (en) | 2017-09-27 | 2017-09-27 | Dual-frequency dual-polarization common-aperture waveguide horn planar array antenna |
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