TWI888303B - Antenna device - Google Patents
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- TWI888303B TWI888303B TW113141282A TW113141282A TWI888303B TW I888303 B TWI888303 B TW I888303B TW 113141282 A TW113141282 A TW 113141282A TW 113141282 A TW113141282 A TW 113141282A TW I888303 B TWI888303 B TW I888303B
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本發明是有關於一種接收訊號的裝置，尤其是一種天線裝置。The present invention relates to a device for receiving signals, in particular to an antenna device.
隨著通訊技術的演進，許多無線通訊系統的天線裝置已經逐漸微型化。然而，在習知技術中，天線裝置經微型化後將大幅影響其性能(performance)，進而衍生出可靠性問題。With the development of communication technology, antenna devices of many wireless communication systems have been gradually miniaturized. However, in the prior art, miniaturization of antenna devices will greatly affect their performance, which will lead to reliability issues.
本發明的目的之一就是在提供一種天線裝置，以改善其經微型化後的性能。One of the purposes of the present invention is to provide an antenna device to improve its performance after miniaturization.
本發明實施例提供一種天線裝置，包含一第一天線、一第二天線與一電路板。第一天線包含一第一絕緣層、一第一訊號饋入線與兩第一接地線。第一訊號饋入線配置於第一絕緣層的一第一表面。兩第一接地線配置於第一絕緣層的一第二表面。第一絕緣層的第一表面相對於第一絕緣層的第二表面，且這些第一接地線對稱於第一絕緣層上之一第一軸線。第二天線包含一第二絕緣層、一第二訊號饋入線與兩第二接地線。第二訊號饋入線配置於第二絕緣層的一第一表面。兩第二接地線配置於第二絕緣層的一第二表面。第二絕緣層的第一表面相對於第二絕緣層的第二表面，且這些第二接地線對稱於第二絕緣層上之一第二軸線。第一絕緣層與第二絕緣層以大致呈90度交叉配置，第一天線與第二天線配置於電路板的一第一表面上。第一軸線與第二軸線相鄰且實質上平行。The embodiment of the present invention provides an antenna device, comprising a first antenna, a second antenna and a circuit board. The first antenna comprises a first insulating layer, a first signal feed line and two first ground lines. The first signal feed line is arranged on a first surface of the first insulating layer. The two first ground lines are arranged on a second surface of the first insulating layer. The first surface of the first insulating layer is opposite to the second surface of the first insulating layer, and the first ground lines are symmetrical to a first axis on the first insulating layer. The second antenna comprises a second insulating layer, a second signal feed line and two second ground lines. The second signal feed line is arranged on a first surface of the second insulating layer. The two second ground lines are arranged on a second surface of the second insulating layer. The first surface of the second insulating layer is opposite to the second surface of the second insulating layer, and the second grounding lines are symmetrical to a second axis on the second insulating layer. The first insulating layer and the second insulating layer are arranged to cross each other at approximately 90 degrees, and the first antenna and the second antenna are arranged on a first surface of the circuit board. The first axis and the second axis are adjacent to each other and are substantially parallel.
在本發明一實施例中，第一軸線與第二軸線實質上重合。In one embodiment of the present invention, the first axis substantially coincides with the second axis.
在本發明一實施例中，第一訊號饋入線包含一第一端與一第二端，各個第一接地線包含一第一端與一第二端，第一訊號饋入線的第一端適於與各個第一接地線的第一端作在一第一頻帶(bandwidth)之無線訊號接收上的匹配(wireless signal reception matching)，且第一訊號饋入線的第二端適於與各個第一接地線的第二端作在一第二頻帶之無線訊號接收上的匹配。In one embodiment of the present invention, the first signal feed line includes a first end and a second end, each first ground line includes a first end and a second end, the first end of the first signal feed line is suitable for matching with the first end of each first ground line in wireless signal reception in a first frequency band, and the second end of the first signal feed line is suitable for matching with the second end of each first ground line in wireless signal reception in a second frequency band.
在本發明一實施例中，第一絕緣層具有一側面，其遠離電路板且連接第一絕緣層之第一表面與第二表面。第一訊號饋入線的第一端鄰近第一絕緣層的側面，第一訊號饋入線的第二端鄰近第一絕緣層的側面。第一訊號饋入線的第二端比第一訊號饋入線的第一端更鄰近第一絕緣層的側面。In one embodiment of the present invention, the first insulating layer has a side surface which is away from the circuit board and connects the first surface and the second surface of the first insulating layer. The first end of the first signal feed line is adjacent to the side surface of the first insulating layer, and the second end of the first signal feed line is adjacent to the side surface of the first insulating layer. The second end of the first signal feed line is closer to the side surface of the first insulating layer than the first end of the first signal feed line.
在本發明一實施例中，第一訊號饋入線的第一端與第一絕緣層的側面的一距離小於第一絕緣層之側面與電路板的一距離的三分之一，且第一訊號饋入線的第二端與第一絕緣層的側面的一距離小於第一絕緣層之側面與電路板的距離的三分之一。In one embodiment of the present invention, a distance between a first end of the first signal feed line and a side surface of the first insulating layer is less than one third of a distance between the side surface of the first insulating layer and the circuit board, and a distance between a second end of the first signal feed line and a side surface of the first insulating layer is less than one third of a distance between the side surface of the first insulating layer and the circuit board.
在本發明一實施例中，第二訊號饋入線包含一第一端與一第二端，各個第二接地線包含一第一端與一第二端，第二訊號饋入線的第一端適於與各個第二接地線的第一端作在第一頻帶之無線訊號接收上的匹配，且第二訊號饋入線的第二端適於與各個第二接地線的第二端作在第二頻帶之無線訊號接收上的匹配。In one embodiment of the present invention, the second signal feed line includes a first end and a second end, each second ground line includes a first end and a second end, the first end of the second signal feed line is suitable for matching with the first end of each second ground line in receiving wireless signals in a first frequency band, and the second end of the second signal feed line is suitable for matching with the second end of each second ground line in receiving wireless signals in a second frequency band.
在本發明一實施例中，第二絕緣層具有一側面，其遠離電路板且連接第二絕緣層之第一表面與第二表面。第二訊號饋入線的第一端鄰近第二絕緣層的側面，第二訊號饋入線的第二端鄰近第二絕緣層的側面。第二訊號饋入線的第二端比第二訊號饋入線的第一端更鄰近第二絕緣層的側面。In one embodiment of the present invention, the second insulating layer has a side surface which is away from the circuit board and connects the first surface and the second surface of the second insulating layer. The first end of the second signal feed line is adjacent to the side surface of the second insulating layer, and the second end of the second signal feed line is adjacent to the side surface of the second insulating layer. The second end of the second signal feed line is closer to the side surface of the second insulating layer than the first end of the second signal feed line.
在本發明一實施例中，第二訊號饋入線的第一端與第二絕緣層的側面的一距離小於第二絕緣層之側面與電路板的一距離的三分之一，且第二訊號饋入線的第二端與第二絕緣層的側面的一距離小於第二絕緣層之側面與電路板的距離的三分之一。In one embodiment of the present invention, a distance between a first end of the second signal feed line and a side surface of the second insulating layer is less than one third of a distance between the side surface of the second insulating layer and the circuit board, and a distance between a second end of the second signal feed line and a side surface of the second insulating layer is less than one third of a distance between the side surface of the second insulating layer and the circuit board.
在本發明一實施例中，這些第一接地線之間的一最短距離是介於0與10毫米之間。In one embodiment of the present invention, a shortest distance between the first ground lines is between 0 and 10 mm.
在本發明一實施例中，這些第二接地線之間的一最短距離是介於0與10毫米之間。In one embodiment of the present invention, a shortest distance between the second ground lines is between 0 and 10 mm.
在本發明一實施例中，第一軸線與第二軸線實質上分別垂直於電路板的第一表面。In one embodiment of the present invention, the first axis and the second axis are substantially perpendicular to the first surface of the circuit board.
在本發明一實施例中，上述天線裝置更包含一反射板，配置於電路板的一第二表面。電路板的第一表面與電路板的第二表面彼此相對。In an embodiment of the present invention, the antenna device further comprises a reflector disposed on a second surface of the circuit board. The first surface of the circuit board and the second surface of the circuit board are opposite to each other.
在本發明一實施例中，第一訊號饋入線的外型與其在第一絕緣層上的位置是分別與第二訊號饋入線的外型與其在第二絕緣層上的位置類似，並且這些第一接地線的外型與其在第一絕緣層上的位置是分別與這些第二接地線的外型與其在第二絕緣層上的位置類似。In one embodiment of the present invention, the appearance of the first signal feed line and its position on the first insulation layer are similar to the appearance of the second signal feed line and its position on the second insulation layer, and the appearance of these first grounding lines and their positions on the first insulation layer are similar to the appearance of these second grounding lines and their positions on the second insulation layer.
圖1繪示本發明一實施例之一種天線裝置的立體示意圖。圖2A繪示圖1之第一天線的前視示意圖。圖2B繪示圖1之第一天線的後視示意圖。圖3A繪示圖1之第二天線的前視示意圖。圖3B繪示圖1之第二天線的後視示意圖。請參考圖1、圖2A、圖2B、圖3A與圖3B，本實施例之天線裝置200包含一第一天線210、一第二天線220、電路板230與反射板240。第一天線210與第二天線220配置於電路板230的一第一表面232上，且反射板240配置於電路板230的一第二表面234。電路板230的第一表面232與電路板230的第二表面234彼此相對。FIG. 1 is a three-dimensional schematic diagram of an antenna device according to an embodiment of the present invention. FIG. 2A is a front view schematic diagram of the first antenna of FIG. 1. FIG. 2B is a rear view schematic diagram of the first antenna of FIG. 1. FIG. 3A is a front view schematic diagram of the second antenna of FIG. 1. FIG. 3B is a rear view schematic diagram of the second antenna of FIG. 1. Referring to FIG. 1, FIG. 2A, FIG. 2B, FIG. 3A and FIG. 3B, the antenna device 200 of the present embodiment includes a first antenna 210, a second antenna 220, a circuit board 230 and a reflector 240. The first antenna 210 and the second antenna 220 are disposed on a first surface 232 of the circuit board 230, and the reflector 240 is disposed on a second surface 234 of the circuit board 230. The first surface 232 of the circuit board 230 and the second surface 234 of the circuit board 230 are opposite to each other.
第一天線210包含一第一絕緣層212、一第一訊號饋入線214與兩第一接地線216。第一訊號饋入線214配置於第一絕緣層212的一第一表面212a。兩第一接地線216配置於第一絕緣層212的一第二表面212b。第一絕緣層212的第一表面212a與第二表面212b為彼此相對，且這些第一接地線216對稱於第一絕緣層212上之一第一軸線A1。由圖2B可知，第一軸線A1實質上平行於第一絕緣層212的第二表面212b。此外，在本實施例中，這些第一接地線216之間的一最短距離W1是介於0與10毫米之間。The first antenna 210 includes a first insulating layer 212, a first signal feed line 214 and two first ground lines 216. The first signal feed line 214 is disposed on a first surface 212a of the first insulating layer 212. The two first ground lines 216 are disposed on a second surface 212b of the first insulating layer 212. The first surface 212a and the second surface 212b of the first insulating layer 212 are opposite to each other, and the first ground lines 216 are symmetrical to a first axis A1 on the first insulating layer 212. As shown in FIG. 2B , the first axis A1 is substantially parallel to the second surface 212b of the first insulating layer 212. In addition, in this embodiment, a shortest distance W1 between the first ground lines 216 is between 0 and 10 mm.
在本實施例中，第一訊號饋入線214包含一第一端214a、一第二端214b與一第三端214c，且各個第一接地線包含一第一端216a、一第二端216b與一第三端216c。第一訊號饋入線214的第一端214a適於與各個第一接地線216的第一端216a作在一第一頻帶之無線訊號接收上的匹配(詳見後述)，且第一訊號饋入線214的第二端214b適於各個與第一接地線216的該第二端216b作在一第二頻帶之無線訊號接收上匹配(詳見後述)。第一訊號饋入線214的第三端214c電性連接至電路板230的訊號線(未繪示)，且第一接地線216的第三端216c電性連接至電路板230的接地線(未繪示)。在另一實施例中，第一訊號饋入線214的第一端214a與第二端214b的其中之一可以省略，且第一接地線的第一端216a與第二端216b的其中之一可以省略，端視設計者的需求而定。In this embodiment, the first signal feed line 214 includes a first end 214a, a second end 214b and a third end 214c, and each first ground line includes a first end 216a, a second end 216b and a third end 216c. The first end 214a of the first signal feed line 214 is suitable for matching with the first end 216a of each first ground line 216 in receiving a wireless signal in a first frequency band (see below for details), and the second end 214b of the first signal feed line 214 is suitable for matching with the second end 216b of each first ground line 216 in receiving a wireless signal in a second frequency band (see below for details). The third end 214c of the first signal feed line 214 is electrically connected to the signal line (not shown) of the circuit board 230, and the third end 216c of the first ground line 216 is electrically connected to the ground line (not shown) of the circuit board 230. In another embodiment, one of the first end 214a and the second end 214b of the first signal feed line 214 can be omitted, and one of the first end 216a and the second end 216b of the first ground line can be omitted, depending on the needs of the designer.
在本實施例中，第一絕緣層212可具有一側面212c，其遠離電路板230且連接第一絕緣層212之第一表面212a與第二表面212b。第一訊號饋入線214的第一端214a可鄰近第一絕緣層212的側面212c，第一訊號饋入線214的第二端214b也可鄰近第一絕緣層212的側面212c。第一訊號饋入線214的第二端214b比第一訊號饋入線214的第一端214a更鄰近第一絕緣層212的側面212c。此外，第一訊號饋入線214的第一端214a與第一絕緣層212的側面212c的一距離D1可小於第一絕緣層212的側面212c與電路板230的一距離D3的三分之一，且第一訊號饋入線214的第二端214b與第一絕緣層212的側面212c的一距離D2也可小於第一絕緣層212的側面212c與電路板230的距離D3的三分之一。In this embodiment, the first insulating layer 212 may have a side surface 212c that is away from the circuit board 230 and connects the first surface 212a and the second surface 212b of the first insulating layer 212. The first end 214a of the first signal feed line 214 may be adjacent to the side surface 212c of the first insulating layer 212, and the second end 214b of the first signal feed line 214 may also be adjacent to the side surface 212c of the first insulating layer 212. The second end 214b of the first signal feed line 214 is closer to the side surface 212c of the first insulating layer 212 than the first end 214a of the first signal feed line 214. In addition, a distance D1 between the first end 214a of the first signal feed line 214 and the side surface 212c of the first insulating layer 212 may be less than one third of a distance D3 between the side surface 212c of the first insulating layer 212 and the circuit board 230, and a distance D2 between the second end 214b of the first signal feed line 214 and the side surface 212c of the first insulating layer 212 may also be less than one third of the distance D3 between the side surface 212c of the first insulating layer 212 and the circuit board 230.
第二天線220包含一第二絕緣層222、一第二訊號饋入線224與兩第二接地線226。第二訊號饋入線224配置於第二絕緣層222的一第一表面222a。兩第二接地線226配置於第二絕緣層222的一第二表面222b。第二絕緣層222的第一表面222a與第二表面222b為彼此相對，且這些第二接地線226對稱於第二絕緣層222上之一第二軸線A2。由圖3B可知，第二軸線A2實質上平行於第二絕緣層222的第二表面222b。此外，在本實施例中，這些第二接地線226之間的一最短距離W2是介於0與10毫米之間。The second antenna 220 includes a second insulating layer 222, a second signal feed line 224 and two second ground lines 226. The second signal feed line 224 is disposed on a first surface 222a of the second insulating layer 222. The two second ground lines 226 are disposed on a second surface 222b of the second insulating layer 222. The first surface 222a and the second surface 222b of the second insulating layer 222 are opposite to each other, and the second ground lines 226 are symmetrical to a second axis A2 on the second insulating layer 222. As shown in FIG. 3B , the second axis A2 is substantially parallel to the second surface 222b of the second insulating layer 222. In addition, in this embodiment, a shortest distance W2 between the second ground lines 226 is between 0 and 10 mm.
在本實施例中，第二訊號饋入線224包含一第一端224a、一第二端224b與一第三端224c，且各個第二接地線包含一第一端226a、一第二端226b與一第三端226c。第二訊號饋入線224的第一端224a適於與各個第二接地線226的第一端226a作在第一頻帶之無線訊號接收上的匹配(詳見後述)，且第二訊號饋入線224的第二端224b適於與各個第二接地線226的該第二端226b作在第二頻帶之無線訊號接收上匹配(詳見後述)。第二訊號饋入線224的第三端224c電性連接至電路板230的訊號線(未繪示)，且第二接地線226的第三端226c電性連接至電路板230的接地線(未繪示)。在另一實施例中，第二訊號饋入線224的第一端224a與第二端224b的其中之一可以省略，且第二接地線的第一端226a與第二端226b的其中之一可以省略，端視設計者的需求而定。In this embodiment, the second signal feed line 224 includes a first end 224a, a second end 224b and a third end 224c, and each second ground line includes a first end 226a, a second end 226b and a third end 226c. The first end 224a of the second signal feed line 224 is suitable for matching with the first end 226a of each second ground line 226 in receiving wireless signals in the first frequency band (see below for details), and the second end 224b of the second signal feed line 224 is suitable for matching with the second end 226b of each second ground line 226 in receiving wireless signals in the second frequency band (see below for details). The third end 224c of the second signal feed line 224 is electrically connected to the signal line (not shown) of the circuit board 230, and the third end 226c of the second ground line 226 is electrically connected to the ground line (not shown) of the circuit board 230. In another embodiment, one of the first end 224a and the second end 224b of the second signal feed line 224 can be omitted, and one of the first end 226a and the second end 226b of the second ground line can be omitted, depending on the designer's needs.
在本實施例中，第二絕緣層222可具有一側面222c，其遠離電路板230且連接第二絕緣層222之第二表面222a與第二表面222b。第二訊號饋入線224的第二端224a可鄰近第二絕緣層222的側面222c，第二訊號饋入線224的第二端224b也可鄰近第二絕緣層222的側面222c。第二訊號饋入線224的第二端224b比第二訊號饋入線224的第二端224a更鄰近第二絕緣層222的側面222c。此外，第二訊號饋入線224的第一端224a與第二絕緣層222的側面222c的一距離D4可小於第二絕緣層222的側面222c與電路板230的一距離D6的三分之一，且第二訊號饋入線224的第二端224b與第二絕緣層222的側面222c的一距離D5也可小於第二絕緣層222的側面222c與電路板230的距離D6的三分之一。In this embodiment, the second insulating layer 222 may have a side surface 222c that is away from the circuit board 230 and connects the second surface 222a and the second surface 222b of the second insulating layer 222. The second end 224a of the second signal feed line 224 may be adjacent to the side surface 222c of the second insulating layer 222, and the second end 224b of the second signal feed line 224 may also be adjacent to the side surface 222c of the second insulating layer 222. The second end 224b of the second signal feed line 224 is closer to the side surface 222c of the second insulating layer 222 than the second end 224a of the second signal feed line 224. In addition, a distance D4 between the first end 224a of the second signal feed line 224 and the side surface 222c of the second insulating layer 222 may be less than one third of a distance D6 between the side surface 222c of the second insulating layer 222 and the circuit board 230, and a distance D5 between the second end 224b of the second signal feed line 224 and the side surface 222c of the second insulating layer 222 may also be less than one third of the distance D6 between the side surface 222c of the second insulating layer 222 and the circuit board 230.
值得注意的是，天線裝置200的第一絕緣層212與第二絕緣層222以大致呈90度交叉配置，且第一軸線A1與第二軸線A2相鄰且實質上平行。在本實施例中，第一軸線A1與第二軸線A2可以盡可能地接近而實質上重合。此外，第一軸線A1與第二軸線A2實質上可分別垂直於電路板230的第一表面232。另外，在本實施例中，第一天線210與第二天線220的設計可以近似。亦即，第一訊號饋入線214的外型與其在第一絕緣層212上的位置是分別與第二訊號饋入線224的外型與其在第二絕緣層222上的位置類似，並且這些第一接地線216的外型與其在第一絕緣層212上的位置是分別與這些第二接地線226的外型與其在第二絕緣層222上的位置類似。It is worth noting that the first insulating layer 212 and the second insulating layer 222 of the antenna device 200 are arranged to cross each other at approximately 90 degrees, and the first axis A1 and the second axis A2 are adjacent to each other and substantially parallel. In this embodiment, the first axis A1 and the second axis A2 can be as close as possible and substantially overlap. In addition, the first axis A1 and the second axis A2 can be substantially perpendicular to the first surface 232 of the circuit board 230, respectively. In addition, in this embodiment, the designs of the first antenna 210 and the second antenna 220 can be similar. That is, the appearance of the first signal feed line 214 and its position on the first insulation layer 212 are similar to the appearance of the second signal feed line 224 and its position on the second insulation layer 222, and the appearance of the first ground lines 216 and their positions on the first insulation layer 212 are similar to the appearance of the second ground lines 226 and their positions on the second insulation layer 222.
當天線裝置200接收一無線訊號(例如為一GPS無線訊號，但不以此為限)時，第一天線210的兩對稱配置的第一接地線216與外來的GPS訊號產生諧振。各個第一接地線216的第一端216a寬度較窄而適於與較高頻帶之GPS訊號(例如L1頻帶(1575.42 MHz附近)的訊號)產生諧振，各個第一接地線216的第二端216b的寬度較寬而適於與較低頻帶之GPS訊號(例如L2、L5或L6頻帶(分別為1227.60 MHz附近、1176.45 MHz附近與1278.8 MHz附近)的訊號)產生諧振。When the antenna device 200 receives a wireless signal (such as a GPS wireless signal, but not limited thereto), the two symmetrically arranged first ground wires 216 of the first antenna 210 resonate with the external GPS signal. The first end 216a of each first ground wire 216 has a narrower width and is suitable for resonating with a higher frequency band GPS signal (such as a signal in the L1 band (near 1575.42 MHz)), and the second end 216b of each first ground wire 216 has a wider width and is suitable for resonating with a lower frequency band GPS signal (such as a signal in the L2, L5 or L6 band (near 1227.60 MHz, near 1176.45 MHz and near 1278.8 MHz, respectively)).
此時，第一天線210的第一訊號饋入線214的第一端214a可與第一接地線216的第一端216a作在較高頻帶之線性極化訊號接收上的匹配，進而擷取訊號且將訊號經由第三端216c饋入至電路板230上的訊號線，或者第一天線210的第一訊號饋入線214的第二端214b可與第一接地線216的第二端216b作在較低頻帶之線性極化訊號接收上的匹配，進而擷取訊號且將訊號經由第三端216c饋入至電路板230上的訊號線。同理，第二天線220的運作可參考上述第一天線210的運作，於此不再贅述。此外，例如為金屬板的反射板240可在天線裝置200接收無線訊號時，提升第一訊號饋入線214與第二訊號饋入線224上的訊號增益。At this time, the first end 214a of the first signal feed line 214 of the first antenna 210 can be matched with the first end 216a of the first ground line 216 in the linear polarization signal reception of the higher frequency band, thereby acquiring the signal and feeding the signal to the signal line on the circuit board 230 through the third end 216c, or the second end 214b of the first signal feed line 214 of the first antenna 210 can be matched with the second end 216b of the first ground line 216 in the linear polarization signal reception of the lower frequency band, thereby acquiring the signal and feeding the signal to the signal line on the circuit board 230 through the third end 216c. Similarly, the operation of the second antenna 220 can refer to the operation of the first antenna 210, which will not be described in detail here. In addition, the reflector 240 , such as a metal plate, can enhance the signal gain on the first signal feed line 214 and the second signal feed line 224 when the antenna device 200 receives wireless signals.
接著，電路板230上的一整合器(combiner)(未繪示)可將第一天線210的第一訊號饋入線214所饋入的較高頻帶之線性極化訊號與第二天線220的第二訊號饋入線224所饋入的較高頻帶之線性極化訊號整合成為一較高頻帶之右手圓極化訊號。或者，電路板230上的一整合器可將第一天線210的第一訊號饋入線214所饋入的較低頻帶之線性極化訊號與第二天線220的第二訊號饋入線224所饋入的較低頻帶之線性極化訊號整合成為一較低頻帶之右手圓極化訊號。Then, a combiner (not shown) on the circuit board 230 can combine the linear polarization signal of the higher frequency band fed by the first signal feed line 214 of the first antenna 210 and the linear polarization signal of the higher frequency band fed by the second signal feed line 224 of the second antenna 220 into a right-hand circular polarization signal of the higher frequency band. Alternatively, an integrator on the circuit board 230 can combine the linear polarization signal of the lower frequency band fed by the first signal feed line 214 of the first antenna 210 and the linear polarization signal of the lower frequency band fed by the second signal feed line 224 of the second antenna 220 into a right-hand circular polarization signal of the lower frequency band.
基於上述，由於第一天線210的兩第一接地線216為對稱配置，所以當天線裝置200接收訊號時，第一天線210的兩對稱配置的第一接地線216上的電流分布對稱。因此，第一天線210的第一訊號饋入線214所擷取的訊號的輻射場形近似於朝向正上方(亦即圖1中所示的方向d)。同理，第二天線220的第二訊號饋入線224所擷取的訊號的輻射場形也是近似於朝向正上方。此外，第一天線210與第二天線220的設計近似(亦即第一訊號饋入線214的外型與其在第一絕緣層212上的位置是分別與第二訊號饋入線224的外型與其在第二絕緣層222上的位置類似，且這些第一接地線216的外型與其在第一絕緣層212上的位置是分別與這些第二接地線226的外型與其在第二絕緣層222上的位置類似)。因此，第一訊號饋入線214從兩對稱配置的第一接地線216所擷取的訊號的增益是近似相同於第二訊號饋入線224從兩對稱配置的第二接地線226所擷取的訊號的增益。基於上述，近似90度交叉配置的第一天線210與第二天線220分別所擷取的訊號在方向d上的強度可以很接近，使得電路板230所整合的右手圓極化訊號的軸比值(AR值)可控制小於2。Based on the above, since the two first grounding wires 216 of the first antenna 210 are symmetrically arranged, when the antenna device 200 receives a signal, the current distribution on the two symmetrically arranged first grounding wires 216 of the first antenna 210 is symmetrical. Therefore, the radiation pattern of the signal captured by the first signal feed line 214 of the first antenna 210 is approximately facing upward (i.e., the direction d shown in FIG. 1 ). Similarly, the radiation pattern of the signal captured by the second signal feed line 224 of the second antenna 220 is also approximately facing upward. In addition, the designs of the first antenna 210 and the second antenna 220 are similar (that is, the shape of the first signal feed line 214 and its position on the first insulation layer 212 are similar to the shape of the second signal feed line 224 and its position on the second insulation layer 222, and the shapes of the first ground lines 216 and their positions on the first insulation layer 212 are similar to the shapes of the second ground lines 226 and their positions on the second insulation layer 222). Therefore, the gain of the signal captured by the first signal feed line 214 from the two symmetrically arranged first ground lines 216 is approximately the same as the gain of the signal captured by the second signal feed line 224 from the two symmetrically arranged second ground lines 226. Based on the above, the strength of the signals captured by the first antenna 210 and the second antenna 220 in the approximately 90-degree cross configuration in the direction d can be very close, so that the axial ratio (AR value) of the right-hand circularly polarized signal integrated by the circuit board 230 can be controlled to be less than 2.
由上述可知，與習知技術相較，本發明實施例的天線裝置200接收訊號時的性能較佳。As can be seen from the above, compared with the prior art, the antenna device 200 of the embodiment of the present invention has better performance in receiving signals.
200 天線裝置 210、220 天線 212、222 絕緣層 212a、222a、232 第一表面 212b、222b、234 第二表面 212c、222c 側面 214、224 訊號饋入線 214a、216a、224a、226a 第一端 214b、216b、224b、226b 第二端 214c、216c、224c、226c 第三端 216、226 接地線 230 電路板 240 反射板 A1、A2 軸線 D1、D2、D3、D4、D5、D6、W1、W2 距離 d 方向 200 Antenna device 210, 220 Antenna 212, 222 Insulation layer 212a, 222a, 232 First surface 212b, 222b, 234 Side surface 214, 224 Signal feed line 214a, 216a, 224a, 226a First end 214b, 216b, 224b, 226b Second end 214c, 216c, 224c, 226c Ground wire 230 Direction
圖1繪示本發明一實施例之一種天線裝置的立體示意圖。FIG. 1 is a three-dimensional schematic diagram of an antenna device according to an embodiment of the present invention.
圖2A繪示圖1之第一天線的前視示意圖。FIG. 2A is a schematic front view of the first antenna of FIG. 1 .
圖2B繪示圖1之第一天線的後視示意圖。FIG. 2B is a schematic rear view of the first antenna of FIG. 1 .
圖3A繪示圖1之第二天線的前視示意圖。FIG. 3A is a schematic front view of the second antenna of FIG. 1 .
圖3B繪示圖1之第二天線的後視示意圖。FIG. 3B is a schematic rear view of the second antenna of FIG. 1 .
200 天線裝置 210、220 天線 212、222 絕緣層 222a、232 第一表面 212b、234 第二表面 224 訊號饋入線 216a、224a 第一端 216b、224b 第二端 216c、224c 第三端 216 接地線 230 電路板 240 反射板 A1、A2 軸線 D3、D6 距離 d 方向 200 Antenna device 210, 220 Antenna 212, 222 Insulation layer 222a, 232 First surface 212b, 234 Second surface 224 Circuit board 240 Reflector A1, A2 Axis D3, D6 Distance d Direction
Claims (20)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6342867B1 (en) * | 2000-03-31 | 2002-01-29 | Navcom Technology, Inc. | Nested turnstile antenna |
| CN104956545A (en) * | 2012-09-24 | 2015-09-30 | 天线国际有限责任公司 | Lens antenna, method of manufacturing and using such an antenna, and antenna system |
| US10096908B2 (en) * | 2015-04-07 | 2018-10-09 | Wistron Neweb Corporation | Antenna device |
| US20190253903A1 (en) * | 2011-08-17 | 2019-08-15 | Skyline Partners Technology Llc | Aperture-fed, stacked-patch antenna assembly |
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2020
- 2020-06-20 TW TW113141282A patent/TWI888303B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6342867B1 (en) * | 2000-03-31 | 2002-01-29 | Navcom Technology, Inc. | Nested turnstile antenna |
| US20190253903A1 (en) * | 2011-08-17 | 2019-08-15 | Skyline Partners Technology Llc | Aperture-fed, stacked-patch antenna assembly |
| CN104956545A (en) * | 2012-09-24 | 2015-09-30 | 天线国际有限责任公司 | Lens antenna, method of manufacturing and using such an antenna, and antenna system |
| US10096908B2 (en) * | 2015-04-07 | 2018-10-09 | Wistron Neweb Corporation | Antenna device |
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