CN206040962U - Electronic frequency reconfigurable ultra-wideband antenna - Google Patents
Electronic frequency reconfigurable ultra-wideband antenna Download PDFInfo
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Abstract
Description
技术领域technical field
本实用新型涉及天线技术领域,具体地,涉及一种电控频率可重构的超宽带天线。The utility model relates to the technical field of antennas, in particular to an electronically controlled frequency reconfigurable ultra-wideband antenna.
背景技术Background technique
随着现代无线技术的发展,天线作为无线通信系统的重要组成部分,多功能,体积小,超宽带已成为了天线研究的重要方向。其中,可重构超宽带天线是一大研究热点,实现电控频率可重构的方法主要有:一是采用机械式移动的方法,实现天线的频率可重构特性,但该方法采用了机械方式,模式切换精确度不能保证,天线体积较大;二是通过使用PIN管和多个辐射分支实现了两个频点的相互切换,但该方法只具备在单一频点上切换的功能,不具备超宽带特性与电控频率频点选择特性;三是通过N个辐射单元与N-1个电子开关,来实现频率可重构的超宽带天线特性,但该方法使用电子开关个数较多,制作较为复杂,天线体积也较大。因此,设计一种能够实现超宽带和窄带之间自由调节的可重构超宽带天线具有重要意义。With the development of modern wireless technology, the antenna, as an important part of the wireless communication system, has multiple functions, small size, and ultra-wideband has become an important direction of antenna research. Among them, reconfigurable ultra-wideband antennas are a major research hotspot. The main methods to realize electronically controlled frequency reconfiguration are as follows: First, the method of mechanical movement is used to realize the frequency reconfigurable characteristics of the antenna. However, this method uses mechanical method, the accuracy of mode switching cannot be guaranteed, and the antenna is large in size; second, the mutual switching between two frequency points is realized by using PIN tubes and multiple radiation branches, but this method only has the function of switching on a single frequency point, and does not It has ultra-wideband characteristics and electronically controlled frequency frequency point selection characteristics; the third is to realize frequency reconfigurable ultra-wideband antenna characteristics through N radiating units and N-1 electronic switches, but this method uses a large number of electronic switches , the production is more complicated, and the antenna volume is also larger. Therefore, it is of great significance to design a reconfigurable UWB antenna that can be freely adjusted between UWB and NWB.
实用新型内容Utility model content
本实用新型的目的是提供一种能够实现超宽带和窄带之间自由调节的可重构的超宽带天线。The purpose of the utility model is to provide a reconfigurable ultra-wideband antenna which can realize free adjustment between ultra-wideband and narrowband.
为了实现上述目的,本实用新型提供一种电控频率可重构的超宽带天线,包括:介质基板,包括相对的第一表面和第二表面;辐射贴片,贴设于所述介质基板的第一表面;微带馈线,贴设于所述介质基板的第一表面;超宽带多模谐振器,贴设于所述介质基板的第一表面,一端通过第一交指耦合结构连接于所述辐射贴片,另一端通过第二交指耦合结构连接于所述微带馈线;接地直流馈电板,贴设于所述介质基板的第一表面,位于所述第二交指耦合结构中的中间微带线和所述微带馈线之间;PIN管,贴设于所述介质基板的第一表面,位于所述第二交指耦合结构中的中间微带线和所述接地直流馈电板之间;窄带谐振器,贴设于所述介质基板的第一表面;接地板,贴设于所述介质基板的第二表面;同轴电缆,包括外导体和内导体,内导体和所述微带馈线相连,外导体和所述接地板相连。In order to achieve the above purpose, the utility model provides an electronically controlled frequency reconfigurable ultra-wideband antenna, including: a dielectric substrate, including a first surface and a second surface opposite; a radiation patch, attached to the dielectric substrate The first surface; the microstrip feeder is attached to the first surface of the dielectric substrate; the ultra-wideband multimode resonator is attached to the first surface of the dielectric substrate, and one end is connected to the first interdigitated coupling structure. The radiation patch, the other end of which is connected to the microstrip feeder through a second interdigital coupling structure; the grounded DC feeder plate is attached to the first surface of the dielectric substrate and is located in the second interdigital coupling structure between the middle microstrip line and the microstrip feeder; the PIN tube, attached to the first surface of the dielectric substrate, is located between the middle microstrip line in the second interdigitated coupling structure and the grounded DC feeder Between the electric boards; a narrowband resonator, attached to the first surface of the dielectric substrate; a ground plate, attached to the second surface of the dielectric substrate; a coaxial cable, including an outer conductor and an inner conductor, and the inner conductor and the The microstrip feeder is connected, and the outer conductor is connected to the ground plate.
可选地,所述超宽带多模谐振器包括环形贴片和矩形贴片,所述矩形贴片的一端与所述环形贴片相连,另一端分别与第一交指耦合结构中的中间微带线和第二交指耦合结构中的中间微带线垂直相连。Optionally, the ultra-broadband multimode resonator includes a ring patch and a rectangular patch, one end of the rectangular patch is connected to the ring patch, and the other end is respectively connected to the middle micro in the first interdigitated coupling structure. The stripline is vertically connected to the middle microstrip line in the second interdigitated coupling structure.
可选地,所述矩形贴片与所述第一交指耦合结构中的中间微带线的连接处设置有第三电感。Optionally, a third inductor is provided at a connection between the rectangular patch and the middle microstrip line in the first interdigital coupling structure.
可选地,所述辐射贴片包括第一类椭圆形贴片和第二类椭圆形贴片,第一类椭圆贴片上开设有类椭圆形孔,第二类椭圆形贴片位于所述类椭圆形孔中。Optionally, the radiation patch includes a first type of elliptical patch and a second type of elliptical patch, the first type of elliptical patch has a quasi-elliptical hole, and the second type of elliptical patch is located on the in oval holes.
可选地,所述接地板形成为一侧边缘为凸形圆弧的类矩形板,所述凸形圆弧的顶端开设有矩形槽。Optionally, the ground plate is formed as a quasi-rectangular plate with a convex arc on one side, and a rectangular groove is opened at the top of the convex arc.
可选地,所述窄带谐振器包括高压直流馈电板、变容二极管以及接地直流馈电板,所述高压直流馈电板和变容二极管之间通过第一电感和第一微带线相连接,所述接地直流馈电板和变容二极管之间通过第二电感和第二微带线相连接。Optionally, the narrowband resonator includes a high-voltage DC feed board, a varactor diode, and a grounded DC feed board, and the high-voltage DC feed board and the varactor diode are connected to each other through a first inductor and a first microstrip line. connection, the grounded DC feed board and the varactor diode are connected through a second inductor and a second microstrip line.
可选地,所述第一微带线和所述第二微带线形成为直角折线型。Optionally, the first microstrip line and the second microstrip line are formed in a right-angle broken line shape.
可选地,所述介质基板为Rogers4350B,其相对介电常数为3.48,损耗正切角为0.0037,基板厚度H=1.524mm。Optionally, the dielectric substrate is Rogers4350B, whose relative permittivity is 3.48, loss tangent angle is 0.0037, and substrate thickness H=1.524mm.
通过上述技术方案,多模谐振器为天线提供了良好的阻带抑制作用,通过控制PIN管的通断,能够实现天线超宽带工作模式和窄带工作模式之间的切换,窄带谐振器能够实现天线窄带频率的自由调节,有效地实现了天线的多功能、小型化和超宽带的频率可重构特性。Through the above technical solution, the multi-mode resonator provides good stop-band suppression for the antenna. By controlling the on-off of the PIN tube, the switch between the ultra-broadband working mode and the narrow-band working mode of the antenna can be realized, and the narrow-band resonator can realize the antenna The free adjustment of the narrowband frequency effectively realizes the multifunctionality, miniaturization and ultra-wideband frequency reconfigurable characteristics of the antenna.
本实用新型的其他特征和优点将在随后的具体实施方式部分予以详细说明。Other features and advantages of the present utility model will be described in detail in the following specific embodiments.
附图说明Description of drawings
附图是用来提供对本实用新型的进一步理解,并且构成说明书的一部分,与下面的具体实施方式一起用于解释本实用新型,但并不构成对本实用新型的限制。在附图中:The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but do not constitute a limitation to the utility model. In the attached picture:
图1是本实用新型提供的电控频率可重构的超宽带天线整体结构示意图;Figure 1 is a schematic diagram of the overall structure of the electronically controlled frequency reconfigurable ultra-wideband antenna provided by the utility model;
图2是本实用新型提供的电控频率可重构的超宽带天线的俯视图;Fig. 2 is a top view of the electronically controlled frequency reconfigurable ultra-wideband antenna provided by the utility model;
图3是本实用新型提供的电控频率可重构的超宽带天线,在超宽带工作模式下的电磁能量传输路径图;Fig. 3 is a diagram of the electromagnetic energy transmission path in the ultra-wideband working mode of the electronically controlled frequency reconfigurable ultra-wideband antenna provided by the utility model;
图4是本实用新型提供的电控频率可重构的超宽带天线,在窄带工作模式下的电磁能量传输路径图;Fig. 4 is a diagram of the electromagnetic energy transmission path in the narrowband working mode of the electronically controlled frequency reconfigurable ultra-wideband antenna provided by the present invention;
图5是本实用新型提供的电控频率可重构的超宽带天线的后视图;Fig. 5 is a rear view of the electronically controlled frequency reconfigurable ultra-wideband antenna provided by the utility model;
图6是本实用新型提供的电控频率可重构的超宽带天线的侧视图;Fig. 6 is a side view of the electronically controlled frequency reconfigurable ultra-wideband antenna provided by the utility model;
图7是本实用新型提供的电控频率可重构的超宽带天线,超宽带工作模式下S11参数随频率变化的曲线图;Fig. 7 is the electronically controlled frequency reconfigurable ultra-wideband antenna provided by the utility model, and the curve diagram of the S11 parameter changing with frequency under the ultra-wideband working mode;
图8是本实用新型提供的电控频率可重构的超宽带天线,窄带工作模式下变容二极管不同电容值情况下S11参数随频率变化的曲线图。Fig. 8 is a graph showing the variation of the S11 parameter with frequency under the conditions of different capacitance values of varactor diodes in the narrow-band working mode of the electronically controlled frequency reconfigurable ultra-wideband antenna provided by the utility model.
具体实施方式detailed description
以下结合附图对本实用新型的具体实施方式进行详细说明。应当理解的是,此处所描述的具体实施方式仅用于说明和解释本实用新型,并不用于限制本实用新型。The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.
如图1所示,本实用新型提供一种电控频率可重构的超宽带天线,包括介质基板0、辐射贴片、微带馈线4、超宽带多模谐振器、接地直流馈电板7、PIN管12、窄带谐振器、接地板17以及同轴电缆。其中,介质基板0包括相对的第一表面和第二表面;辐射贴片、微带馈线4、超宽带多模谐振器、接地直流馈电板7、PIN管12以及窄带谐振器均贴设于介质基板0的第一表面;超宽带多模谐振器的一端通过第一交指耦合结构连接于辐射贴片,另一端通过第二交指耦合结构连接于微带馈线4;接地直流馈电板7位于第二交指耦合结构中的中间微带线32和微带馈线4之间;PIN管12位于第二交指耦合结构中的中间微带线32和接地直流馈电板7之间;接地板17,贴设于介质基板0的第二表面;同轴电缆,包括外导体和内导体,内导体和微带馈线4相连,外导体和接地板17相连。As shown in Figure 1, the utility model provides an electronically controlled frequency reconfigurable ultra-wideband antenna, including a dielectric substrate 0, a radiation patch, a microstrip feeder 4, an ultra-wideband multimode resonator, and a grounded DC feeder 7 , PIN tube 12, narrowband resonator, ground plate 17 and coaxial cable. Among them, the dielectric substrate 0 includes opposite first and second surfaces; the radiation patch, the microstrip feeder 4, the ultra-wideband multimode resonator, the grounded DC feeder 7, the PIN tube 12 and the narrowband resonator are all attached to the The first surface of the dielectric substrate 0; one end of the ultra-wideband multimode resonator is connected to the radiation patch through the first interdigitated coupling structure, and the other end is connected to the microstrip feeder 4 through the second interdigitated coupling structure; the grounding DC feeder board 7 is located between the middle microstrip line 32 and the microstrip feeder 4 in the second interdigitated coupling structure; the PIN tube 12 is located between the middle microstrip line 32 and the grounded DC feeder board 7 in the second interdigitated coupling structure; The ground plate 17 is attached to the second surface of the dielectric substrate 0; the coaxial cable includes an outer conductor and an inner conductor, the inner conductor is connected to the microstrip feeder 4, and the outer conductor is connected to the ground plate 17.
通过上述技术方案,多模谐振器为天线提供了良好的阻带抑制作用,通过控制PIN管的通断,能够实现天线超宽带工作模式和窄带工作模式之间的调节,窄带谐振器能够实现天线窄带频率的自由调节,有效地实现了天线的多功能、小型化和超宽带的频率可重构特性。Through the above technical solution, the multi-mode resonator provides good stop-band suppression for the antenna. By controlling the on-off of the PIN tube, the adjustment between the ultra-broadband working mode and the narrow-band working mode of the antenna can be realized. The narrow-band resonator can realize the antenna The free adjustment of the narrowband frequency effectively realizes the multifunctionality, miniaturization and ultra-wideband frequency reconfigurable characteristics of the antenna.
其中,在本实用新型提供的实施方式中,如图1和图2所示,超宽带多模谐振器包括环形贴片1和矩形贴片2,矩形贴片2的一端与环形贴片1相连,另一端分别与第一交指耦合结构中的中间微带线31和第二交指耦合结构中的中间微带线32相连,并且矩形贴片2与中间微带馈线31和32均垂直,矩形贴片2与第一交指耦合结构中的中间微带线31的连接处设置有第三电感11。超宽带多模谐振器为天线提供了良好的阻带抑制作用,具体地,天线在超宽带工作模式下,电磁能量的路径如图3所示,首先,通过50Ω同轴电缆的内导体作为天线的馈电端口,PIN管12位于第二交指耦合结构中的中间微带线32和接地直流馈电板7之间,当PIN管12处于关闭状态时,超宽带多模谐振器处于工作状态,该天线可以工作在UWB3.1GHz~10.6GHz频段的超宽带模式,在这个超宽带范围内,该天线具有稳定的方向图且能够实现增益,可作为发射天线和接收天线;当PIN管12处于打开状态时,超宽带多模谐振器处于接地状态,天线的工作模式由窄带谐振器决定。Wherein, in the embodiment provided by the utility model, as shown in Fig. 1 and Fig. 2, the ultra-wideband multimode resonator includes a ring patch 1 and a rectangular patch 2, and one end of the rectangular patch 2 is connected to the ring patch 1 , the other ends are respectively connected to the middle microstrip line 31 in the first interdigitated coupling structure and the middle microstrip line 32 in the second interdigitated coupling structure, and the rectangular patch 2 is perpendicular to the middle microstrip feeders 31 and 32, A third inductor 11 is provided at the connection between the rectangular patch 2 and the middle microstrip line 31 in the first interdigitated coupling structure. The ultra-wideband multimode resonator provides good stop-band suppression for the antenna. Specifically, when the antenna is in the ultra-wideband operating mode, the path of electromagnetic energy is shown in Figure 3. First, the inner conductor of the 50Ω coaxial cable is used as the antenna The feed port, the PIN tube 12 is located between the middle microstrip line 32 in the second interdigitated coupling structure and the grounding DC feed board 7, when the PIN tube 12 is in the closed state, the ultra-wideband multimode resonator is in the working state , the antenna can work in the ultra-wideband mode of the UWB3.1GHz~10.6GHz frequency band. In this ultra-wideband range, the antenna has a stable pattern and can achieve gain. It can be used as a transmitting antenna and a receiving antenna; when the PIN tube 12 is in In the open state, the UWB multimode resonator is grounded, and the working mode of the antenna is determined by the narrowband resonator.
进一步地,在本实用新型提供的实施方式中,如图1和图4所示,窄带谐振器包括高压直流馈电板13、变容二极管8以及接地直流馈电板14,高压直流馈电板13和变容二极管8之间通过第一电感10和第一微带线15相连接,接地直流馈电板14和变容二极管8之间通过第二电感10和第二微带线15相连接,第一微带线15和第二微带线15形成为直角折线型,利用变容二极管8的直流馈电电压的大小来改变变容二极管8的电容值,从而可以调节天线在窄带模式下的工作频率。Further, in the embodiment provided by the present utility model, as shown in FIG. 1 and FIG. 4, the narrowband resonator includes a high-voltage DC feed board 13, a varactor diode 8 and a grounded DC feed board 14, and the high-voltage DC feed board 13 and the varactor 8 are connected through the first inductance 10 and the first microstrip line 15, and the grounded DC feed board 14 and the varactor 8 are connected through the second inductance 10 and the second microstrip line 15 , the first microstrip line 15 and the second microstrip line 15 are formed into a right-angled broken line type, and the capacitance value of the varactor diode 8 is changed by using the DC feed voltage of the varactor diode 8, so that the antenna can be adjusted in the narrowband mode working frequency.
其中,在本实用新型第一交指耦合结构中间的微带馈线31、第二交指耦合结构中间的微带馈线32以及多模谐振器为天线提供良好的阻带抑制能力,多模谐振器和双边的第一交指耦合结构和第二交指耦合结构可视为滤波器超宽带路径部分。通过交指耦合结构耦合到辐射贴片后端,具体地,辐射贴片包括第一类椭圆形贴片5和第二类椭圆形贴片6,第一类椭圆贴片5上开设有类椭圆形孔,第二类椭圆形贴片6位于类椭圆形孔中,在第一类椭圆贴片5内部嵌入第二类椭圆贴片6,用第二类椭圆贴片6的基模抑制第一类椭圆贴片5的二次模,能够实现可重构天线的超宽带状态下的方向图稳定设计,从而提高超宽带天线的高频辐射特性。Among them, the microstrip feeder 31 in the middle of the first interdigitated coupling structure of the utility model, the microstrip feeder 32 in the middle of the second interdigitated coupling structure and the multimode resonator provide good stopband suppression capability for the antenna, and the multimode resonator The first interdigital coupling structure and the second interdigital coupling structure on both sides can be regarded as part of the ultra-wideband path of the filter. It is coupled to the back end of the radiation patch through an interdigitated coupling structure. Specifically, the radiation patch includes a first type of elliptical patch 5 and a second type of elliptical patch 6, and the first type of elliptical patch 5 is provided with a quasi-elliptical patch. shaped hole, the second type of elliptical patch 6 is located in the quasi-elliptical hole, the second type of elliptical patch 6 is embedded inside the first type of elliptical patch 5, and the first type of elliptical patch 6 is used to suppress the first The quadratic mode of the quasi-ellipse patch 5 can realize the stable design of the pattern of the reconfigurable antenna in the ultra-wideband state, thereby improving the high-frequency radiation characteristics of the ultra-wideband antenna.
具体地,在本实用新型提供的实施方式中,如图2和图4所示,介质基板0为Rogers4350B(罗杰斯4350B),其相对介电常数为3.48,损耗正切角为0.0037,基板厚度H=1.524mm,采用这种材料主要是由于该介质基板的损耗角低,对于辐射效率有一定保证;接地板17形成为一侧边缘为凸形圆弧的类矩形板,圆弧的半长轴为0.5*W,半短轴为GL1+GL2-GL3,为了更好的匹配,凸形圆弧的顶端开设有矩形槽16,矩形槽16的长度GL1=3.5mm~4.5mm,宽度GW1=5mm~6mm;具体地,上述第一类椭圆贴片5和第二类椭圆贴片6均由两个具有相同半长轴而离心率不同的半椭圆形拼接而成,第一类椭圆贴片5的半长轴R3=8mm~9mm,其组成的两个半椭圆的半短轴长分别为7mm~8mm和8mm~9mm,第二类椭圆贴片6嵌在第一类椭圆贴片5的内部,两者不接触,类椭圆形孔的半长轴R4=3mm~4mm,半短轴分别为3.3mm~4.5mm和2.5mm~3.5mm,第二类椭圆贴片6的半长轴R5=2mm~3mm,半短轴分别为3.5mm~4.5mm和2mm~3mm,类椭圆形孔和第二类椭圆贴片6的圆心间距L10=0.1mm~0.2mm;环形贴片1的外环半径R1=5mm~6mm,内环半径R2=1mm~2mm,外环圆心至第一交指耦合结构中间微带线31和第二交指耦合结构中间微带线32连接端的距离W3=7mm~9mm,环形贴片1与垂直于交指结构中间微带线的矩形微带线缝隙为0.1mm~0.3mm;变容二极管8的长度为0.5mm~1.5mm,其宽度为0.1mm~0.5mm,变容二极管8两侧直接与微带线相连,第一微带线15与交指型耦合结构耦合部分长度为1mm~3mm,耦合位置距离直流馈电板7连接电感长度L7=2.5mm~4.5mm。直流馈电板7长和宽均为L3=0.5mm~1.5mm;接地孔9的直径为R6=0.1mm~0.5mm;上述第一交指耦合结构和第二交指耦合结构中间微带馈线的长度L2=7mm~8mm,宽度为W5=0.3mm~0.5mm;第一交指耦合结构和第二交指耦合结构中间微带馈线的上、下两微带馈线的长度L2=7mm~8mm,L7=7mm~8mm,宽度为W6=0.2mm~0.5mm。电感片长度为0.5mm~1.5mm,电感片宽度为0.3mm~0.5mm,PIN管12长度为0.5mm~1.5mm,宽度为0.3mm~0.5mm。Specifically, in the embodiment provided by the present utility model, as shown in Figure 2 and Figure 4, the dielectric substrate 0 is Rogers4350B (Rogers 4350B), its relative permittivity is 3.48, the loss tangent angle is 0.0037, and the substrate thickness H= 1.524mm, the use of this material is mainly due to the low loss angle of the dielectric substrate, which has a certain guarantee for radiation efficiency; the ground plate 17 is formed as a rectangular plate with a convex arc on one side, and the semi-major axis of the arc is 0.5*W, the semi-short axis is GL1+GL2-GL3, in order to better match, the top of the convex arc is provided with a rectangular groove 16, the length of the rectangular groove 16 is GL1=3.5mm~4.5mm, and the width GW1=5mm~ 6 mm; specifically, the first type of elliptical patch 5 and the second type of elliptical patch 6 are spliced by two semi-elliptical shapes with the same semi-major axis but different eccentricities, and the first type of elliptical patch 5 The semi-major axis R3=8mm-9mm, the semi-minor axes of the two semi-ellipses formed are 7mm-8mm and 8mm-9mm respectively, the second type of elliptical patch 6 is embedded in the first type of elliptical patch 5, The two are not in contact, the semi-major axis R4 of the quasi-elliptical hole is 3mm-4mm, the semi-minor axis is 3.3mm-4.5mm and 2.5mm-3.5mm respectively, and the semi-major axis R5 of the second type of elliptical patch 6 is 2mm ~3mm, the semi-minor axis is 3.5mm~4.5mm and 2mm~3mm respectively, the distance L10 between the centers of the quasi-elliptical hole and the second type of elliptical patch 6=0.1mm~0.2mm; the outer ring radius R1 of the annular patch 1 =5mm~6mm, the inner ring radius R2=1mm~2mm, the distance W3=7mm~9mm from the center of the outer ring to the middle microstrip line 31 of the first interdigitated coupling structure and the connecting end of the middle microstrip line 32 of the second interdigitated coupling structure, The gap between the annular patch 1 and the rectangular microstrip line perpendicular to the middle microstrip line of the interdigitated structure is 0.1mm-0.3mm; the length of the varactor diode 8 is 0.5mm-1.5mm, and its width is 0.1mm-0.5mm. Both sides of the capacitor diode 8 are directly connected to the microstrip line, the length of the coupling part between the first microstrip line 15 and the interdigitated coupling structure is 1 mm to 3 mm, and the distance between the coupling position and the connecting inductance of the DC feeding board 7 is L7 = 2.5 mm to 4.5 mm . The length and width of the DC feeder board 7 are both L3=0.5mm~1.5mm; the diameter of the ground hole 9 is R6=0.1mm~0.5mm; the above-mentioned first interdigital coupling structure and the middle microstrip feeder of the second interdigital coupling structure The length L2=7mm~8mm, the width is W5=0.3mm~0.5mm; the length L2 of the upper and lower microstrip feedlines in the middle of the first interdigitated coupling structure and the second interdigitated coupling structure L2=7mm~8mm , L7 = 7mm ~ 8mm, width W6 = 0.2mm ~ 0.5mm. The length of the inductor sheet is 0.5mm-1.5mm, the width of the inductor sheet is 0.3mm-0.5mm, the length of the PIN tube 12 is 0.5mm-1.5mm, and the width is 0.3mm-0.5mm.
为了获得多功能、小型化、频率可重构的超宽带天线,需对本实用新型所设计的超宽带天线中各组件的尺寸进行不断调整,如表1所示,为各组件最佳的尺寸组合,并根据表中的尺寸使用高频电磁仿真软件HFSS13.0进行仿真分析,经过仿真优化之后得到该天线S11参数进行分析:在超宽带工作模式下,如图6所示,10dB带宽为3.009GHz~10.781GHz,完全涵盖了UWB的3.1GHz到10.6GHz,即整个UWB工作频带内匹配良好,且10.9GHz-14GHz频段内,S11小于-3dB,具有良好的阻带抑制;在窄带工作模式下,如图7所示,通过变容二极管8的偏置电压,可以实现该天线在窄带工作模式下工作频率的有效调节;此外,该超宽带天线由于是集成设计,因此具有小型化、结构紧凑、易于制造和调试等优势,同时,外形简单美观。In order to obtain a multi-functional, miniaturized, frequency-reconfigurable UWB antenna, it is necessary to continuously adjust the size of each component in the UWB antenna designed by the utility model, as shown in Table 1, which is the best size combination of each component , and use high-frequency electromagnetic simulation software HFSS13.0 for simulation analysis according to the size in the table, after simulation optimization, the antenna S 11 parameters are obtained for analysis: in the ultra-wideband working mode, as shown in Figure 6, the 10dB bandwidth is 3.009 GHz to 10.781GHz, fully covering UWB from 3.1GHz to 10.6GHz, that is, the entire UWB working frequency band is well matched, and in the 10.9GHz-14GHz frequency band, S 11 is less than -3dB, with good stop band suppression; in narrowband working mode Next, as shown in Figure 7, through the bias voltage of the varactor diode 8, the effective adjustment of the working frequency of the antenna in the narrowband working mode can be realized; in addition, because the ultra-wideband antenna is an integrated design, it has the advantages of miniaturization, structural It has the advantages of being compact, easy to manufacture and debug, and at the same time, simple and beautiful in appearance.
表1.各参数最佳尺寸表Table 1. Optimum size table for each parameter
注:L代表介质基板0的长度;W代表介质基板0的宽度,R1、R2分别代表超宽带多模谐振器环形贴片1内外圆半径长度,R3、R4、R5分别代表各个类椭圆辐射贴片的半长轴长度,R6代表接地孔9直径,L1代表类椭圆辐射贴片圆心距离馈电端口的距离,L2表示交指结构伸出部分的长度,L3表示高压直流馈电板13的长度,L4表示变容二极管8与交指结构馈电侧的条带耦合长度,L5表示变容二极管8长度,L6表示变容二极管8与交指结构辐射片侧的条带耦合长度,L7表示交指结构中间微带馈线的长度,L8表示垂直交指结构的多模谐振器矩形条带2宽度,L9表示辐射贴片矩形结构长度,L10表示类椭圆孔和第二类椭圆贴片6的圆心间距;W1表示辐射贴片矩形结构宽度,W2接地孔9距离交指耦合结构的距离,W3表示环形贴片1的圆心到基板下边缘的距离;W4表示变容二极管8微带线15的宽度,W5表示交指耦合结构中间微带线的宽度,W6表示交指耦合结构中上、下微带线的宽度;H代表介质基板0的厚度;h代表覆铜的厚度,即各种微带线、微带贴片的厚度。Note: L represents the length of the dielectric substrate 0; W represents the width of the dielectric substrate 0; R1 and R2 represent the radius length of the inner and outer circles of the ultra-wideband multimode resonator ring patch 1 respectively; R3, R4 and R5 represent the elliptical radiation patches of various types The length of the semi-major axis of the chip, R6 represents the diameter of the ground hole 9, L1 represents the distance between the center of the quasi-elliptical radiation patch and the feed port, L2 represents the length of the protruding part of the interdigitated structure, and L3 represents the length of the high-voltage DC feed plate 13 , L4 represents the strip coupling length between the varactor 8 and the interdigitated structure feeding side, L5 represents the length of the varactor 8, L6 represents the strip coupling length between the varactor 8 and the interdigitated structure radiator side, and L7 represents the alternating Refers to the length of the microstrip feedline in the middle of the structure, L8 represents the width of the multimode resonator rectangular strip 2 of the vertical interdigitated structure, L9 represents the length of the rectangular structure of the radiation patch, and L10 represents the center of the quasi-elliptical hole and the second type of elliptical patch 6 Spacing; W1 represents the width of the rectangular structure of the radiation patch, W2 represents the distance between the ground hole 9 and the interdigitated coupling structure, W3 represents the distance from the center of the circular patch 1 to the lower edge of the substrate; W4 represents the width of the microstrip line 15 of the varactor diode 8 , W5 represents the width of the microstrip line in the middle of the interdigitated coupling structure, W6 represents the width of the upper and lower microstrip lines in the interdigitated coupling structure; H represents the thickness of the dielectric substrate 0; h represents the thickness of the copper clad, that is, various microstrips Thickness of wire, microstrip patch.
以上结合附图详细描述了本实用新型的优选实施方式,但是,本实用新型并不限于上述实施方式中的具体细节,在本实用新型的技术构思范围内,可以对本实用新型的技术方案进行多种简单变型,这些简单变型均属于本实用新型的保护范围。The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the specific details of the above-mentioned embodiment, and within the scope of the technical concept of the utility model, the technical solution of the utility model can be carried out in many ways. These simple modifications all belong to the protection scope of the present utility model.
另外需要说明的是,在上述具体实施方式中所描述的各个具体技术特征,在不矛盾的情况下,可以通过任何合适的方式进行组合,为了避免不必要的重复,本实用新型对各种可能的组合方式不再另行说明。In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be explained separately.
此外,本实用新型的各种不同的实施方式之间也可以进行任意组合,只要其不违背本实用新型的思想,其同样应当视为本实用新型所公开的内容。In addition, any combination of various implementations of the present invention can also be made, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.
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Cited By (3)
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CN106299649A (en) * | 2016-08-31 | 2017-01-04 | 重庆大学 | The reconfigurable ultra-wideband antenna of electronically controlled frequency |
CN107623185A (en) * | 2017-09-30 | 2018-01-23 | 重庆三峡学院 | A Rectangular Ring Five-Frequency Reconfigurable Microstrip Antenna and Communication Device |
CN107658550A (en) * | 2017-09-30 | 2018-02-02 | 重庆三峡学院 | A kind of the frequency reconstructable microstrip aerial of elliptical annular four and communication device |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106299649A (en) * | 2016-08-31 | 2017-01-04 | 重庆大学 | The reconfigurable ultra-wideband antenna of electronically controlled frequency |
CN107623185A (en) * | 2017-09-30 | 2018-01-23 | 重庆三峡学院 | A Rectangular Ring Five-Frequency Reconfigurable Microstrip Antenna and Communication Device |
CN107658550A (en) * | 2017-09-30 | 2018-02-02 | 重庆三峡学院 | A kind of the frequency reconstructable microstrip aerial of elliptical annular four and communication device |
CN107623185B (en) * | 2017-09-30 | 2021-02-02 | 重庆三峡学院 | Rectangular annular five-frequency reconfigurable microstrip antenna and communication device |
CN107658550B (en) * | 2017-09-30 | 2021-02-02 | 重庆三峡学院 | Elliptical annular four-frequency reconfigurable microstrip antenna and communication device |
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