TWI572085B - Diplexer and waveguide - Google Patents
Diplexer and waveguide Download PDFInfo
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- TWI572085B TWI572085B TW101149746A TW101149746A TWI572085B TW I572085 B TWI572085 B TW I572085B TW 101149746 A TW101149746 A TW 101149746A TW 101149746 A TW101149746 A TW 101149746A TW I572085 B TWI572085 B TW I572085B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
- H01P1/2138—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using hollow waveguide filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
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Description
本發明係指一種分離濾波器,尤指一種透過彎折一高通濾波器以縮小體積的分離濾波器。 The present invention refers to a separation filter, and more particularly to a separation filter that reduces the volume by bending a high-pass filter.
衛星通訊具有覆蓋範圍廣大及不受地面環境干擾等優點,廣泛用於軍事、探測及商用通訊服務如衛星導航、衛星語音廣播或衛星電視廣播等。 Satellite communication has the advantages of wide coverage and no interference from the ground environment, and is widely used in military, probing and commercial communication services such as satellite navigation, satellite voice broadcasting or satellite television broadcasting.
於習知技術中,波導管(Waveguide)係一種被廣泛使用於衛星通訊收發機之通訊元件。例如,波導管用來傳遞衛星無線訊號,並可將極化方向正交的水平極化及垂直極化的無線訊號分離,使其由不同之輸出埠輸出,以利後端收發處理器處理欲傳送或接收之無線訊號。 In the prior art, Waveguide is a communication component widely used in satellite communication transceivers. For example, the waveguide is used to transmit satellite wireless signals, and the horizontally polarized and vertically polarized wireless signals whose polarization directions are orthogonal can be separated and outputted by different output ports to facilitate the processing of the back-end transceiver processor. Or receive a wireless signal.
然而,衛星通訊收發機往往架設於建築物外牆或地勢較高的空曠處,以利衛星訊號的發射與接收。因此,衛星通訊收發機的體積應盡量縮小以及減輕其重量,以提升工程人員安裝衛星通訊收發機的便利性,並維持衛星通訊收發機的耐受性及安全性,以免衛星通訊收發機在強風中的吹襲而掉落。因此,如何縮小波導管以及衛星通訊收發機整體的體積以及重量,已成為業界所努力的目標之一。 However, satellite communication transceivers are often installed on the outer walls of buildings or in open spaces with high terrain to facilitate the transmission and reception of satellite signals. Therefore, the size of the satellite communication transceiver should be reduced as much as possible and the weight should be reduced to improve the convenience of the engineer to install the satellite communication transceiver, and to maintain the tolerance and safety of the satellite communication transceiver, so as to avoid the satellite communication transceiver in the strong wind. The blow in the fall fell. Therefore, how to reduce the overall volume and weight of the waveguide and the satellite communication transceiver has become one of the goals of the industry.
因此,本發明之主要目的即在於提供一種分離濾波器,透過彎折一高通濾波器以縮小其面積及體積。 Accordingly, it is a primary object of the present invention to provide a separation filter that reduces the area and volume by bending a high pass filter.
本發明揭露一種分離濾波器,用於一波導管,包含有一功率分配器,用來傳遞一傳送訊號以及一正交極化接收訊號;一低通濾波器,耦接於該功率分配器,用來過濾該傳送訊號,並傳遞該正交極化接收訊號;一連接埠,耦接於該功率分配器,具有一第一彎折,用來傳遞該傳送訊號;以及一高通濾波器,耦接於該連接埠,用來過濾該正交極化接收訊號,並傳遞該傳送訊號。 The present invention discloses a separation filter for a waveguide, comprising a power divider for transmitting a transmission signal and an orthogonal polarization receiving signal; a low pass filter coupled to the power divider for use Filtering the transmission signal and transmitting the orthogonal polarization receiving signal; a connection port coupled to the power divider, having a first bend for transmitting the transmission signal; and a high pass filter coupled The connection port is configured to filter the orthogonal polarization receiving signal and transmit the transmission signal.
本發明另揭露一種波導管,包含有一分離濾波器;一功率分配器,用來傳遞一傳送訊號以及一第一正交極化接收訊號;一第一低通濾波器,耦接於該功率分配器,用來過濾該傳送訊號,並傳遞該第一正交極化接收訊號;一連接埠,耦接於該功率分配器,具有一第一彎折,用來傳遞該傳送訊號;以及一高通濾波器,耦接於該連接埠,用來過濾該第一正交極化接收訊號,並傳遞該傳送訊號;一傳輸埠,耦接於該高通濾波器,用來輸入該傳送訊號;一第一接收埠,用來接收該第一正交極化接收訊號;一第二接收埠,用來接收一第二正交極化接收訊號;一通用埠,用來輸出該傳送訊號以及輸入一接收訊號;一第二低通濾波器,耦接於該接收埠,用來過濾該傳送訊號及該第一正交極化接收訊號,並傳遞該第二正交極化接收 訊號至該第二接收埠;以及一正交模轉換器,耦接於該通用埠、該第二低通濾波器以及該分離濾波器,用來傳遞該傳送訊號以及配合該第二低通濾波器將該接收訊號分離為該第一正交極化接收訊號及該第二正交極化接收訊號。 The invention further discloses a waveguide comprising a separation filter; a power divider for transmitting a transmission signal and a first orthogonal polarization reception signal; and a first low-pass filter coupled to the power distribution For filtering the transmission signal and transmitting the first orthogonal polarization receiving signal; a port coupled to the power divider, having a first bend for transmitting the transmission signal; and a Qualcomm a filter coupled to the port for filtering the first orthogonally polarized receive signal and transmitting the transmit signal; a transmit port coupled to the high pass filter for inputting the transmit signal; a receiving frame for receiving the first orthogonal polarization receiving signal; a second receiving port for receiving a second orthogonal polarization receiving signal; a universal port for outputting the transmitting signal and inputting and receiving a second low pass filter coupled to the receiving port for filtering the transmit signal and the first orthogonally polarized receive signal and transmitting the second orthogonal polarization receive Signaling to the second receiving port; and a quadrature analog converter coupled to the common 埠, the second low pass filter, and the separating filter for transmitting the transmitting signal and cooperating with the second low pass filtering The device separates the received signal into the first orthogonal polarization receiving signal and the second orthogonal polarization receiving signal.
請參考第1圖,第1圖為本發明實施例一波導管10之示意圖。波導管10可用於一衛星通訊收發機,其包含有一正交模轉換器(Orthomode Transducer)11、一低通濾波器12、一分離濾波器(Diplexer)13、一通用埠CMP、接收埠RP2及RP1以及一傳輸埠TP。詳細來說,通用埠CMP用來輸出一傳送訊號TX以及輸入一接收訊號RX。正交模轉換器11耦接於通用埠CMP、低通濾波器12以及分離濾波器13,用來傳遞傳送訊號TX以及配合低通濾波器12將接收訊號RX分離為正交極化接收訊號RX2及RX1。例如,正交極化接收訊號RX2可為一水平極化訊號,而正交極化接收訊號RX1可為一垂直極化訊號。低通濾波器12耦接於正交模轉換器11與接收埠RP2之間,用來過濾傳送訊號TX及正交極化接收訊號RX1,並傳遞正交極化接收訊號RX2至接收埠RP2。分離濾波器13耦接於正交模轉換器11,用來配合低通濾波器134分離傳送訊號TX及接收訊號正交極化接收訊號RX1,以由傳輸埠TP傳遞傳送訊號TX,並將正交極化接收訊號RX1傳遞至接收埠RP1。 Please refer to FIG. 1. FIG. 1 is a schematic view of a waveguide 10 according to an embodiment of the present invention. The waveguide 10 can be used in a satellite communication transceiver, which comprises an Orthomode Transducer 11, a low pass filter 12, a splitter 13 , a universal 埠 CMP, a receive 埠 RP 2 and RP1 and a transmission 埠TP. In detail, the general purpose CMP is used to output a transmission signal TX and input a reception signal RX. The orthogonal mode converter 11 is coupled to the general-purpose 埠CMP, the low-pass filter 12, and the separation filter 13 for transmitting the transmission signal TX and the low-pass filter 12 to separate the received signal RX into the orthogonal polarization receiving signal RX2. And RX1. For example, the orthogonal polarization receiving signal RX2 can be a horizontally polarized signal, and the orthogonal polarization receiving signal RX1 can be a vertical polarization signal. The low pass filter 12 is coupled between the orthogonal mode converter 11 and the receiving port RP2 for filtering the transmission signal TX and the orthogonal polarization receiving signal RX1, and transmitting the orthogonal polarization receiving signal RX2 to the receiving port RP2. The separation filter 13 is coupled to the orthogonal mode converter 11 for separating the transmission signal TX and the received signal orthogonal polarization reception signal RX1 in cooperation with the low-pass filter 134 to transmit the transmission signal TX by the transmission 埠TP, and will be positive The cross-polarization reception signal RX1 is transmitted to the reception port RP1.
分離濾波器13包含有一功率分配器131、一連接埠132、一高 通濾波器133以及一低通濾波器134。功率分配器131耦接於正交模轉換器11,用來傳遞傳送訊號TX以及配合低通濾波器134分離為正交極化接收訊號RX1。低通濾波器134耦接於功率分配器131,用來過濾傳送訊號TX,並傳遞正交極化接收訊號RX1至接收埠RP1。連接埠132耦接於功率分配器131,用來傳遞傳送訊號TX。高通濾波器133耦接於連接埠132,用來過濾正交極化接收訊號RX1,並由傳輸埠TP傳遞傳送訊號TX。 The separation filter 13 includes a power divider 131, a port 132, and a high Pass filter 133 and a low pass filter 134. The power divider 131 is coupled to the orthogonal mode converter 11 for transmitting the transmission signal TX and the low-pass filter 134 to be separated into orthogonal polarization reception signals RX1. The low pass filter 134 is coupled to the power divider 131 for filtering the transmit signal TX and transmitting the orthogonal polarization receive signal RX1 to the receive port RP1. The port 132 is coupled to the power splitter 131 for transmitting the transmit signal TX. The high pass filter 133 is coupled to the port 132 for filtering the orthogonal polarization receiving signal RX1 and transmitting the transmission signal TX by the transmission port TP.
如此一來,波導管10可於一衛星通訊收發機中,傳遞無線訊號,即傳送訊號TX及接收訊號RX,並可將接收訊號RX分離為正交極化接收訊號RX2及RX1,使其分別由接收埠RP2及RP1輸出。 In this way, the waveguide 10 can transmit the wireless signal, that is, transmit the signal TX and the received signal RX, in a satellite communication transceiver, and can separate the received signal RX into orthogonal polarization receiving signals RX2 and RX1, respectively It is output by the receiving ports RP2 and RP1.
具體來說,請參考第2圖,第2圖為本發明實施例分離濾波器13之詳細結構示意圖。連接埠132具有一彎折B1,可等效為一訊號反射面,用來反射部分之正交極化接收訊號RX1,因此可改善接收埠RP1與傳輸埠TP之間的隔離度(Isolation)。高通濾波器133較佳地為雙邊階梯式(Double Corrugated)濾波器,其包含有一傳導部21以及階梯式轉換器(Corrugated Transformer)22及23。傳導部21包含有複數個彎折B2,使高通濾波器133呈一蜿蜒狀。階梯式轉換器22形成於傳導部21的一端與彎折B1之間,用來傳遞傳送訊號TX,以及用來作為正交極化接收訊號RX1之一截止反射面CO,避免正交極化接收訊號RX1通過高通濾波器133。階梯式轉換器23形成於傳導部21的另一端,用來由傳輸埠TP傳遞傳送 訊號TX。低通濾波器134包含有一階梯式轉換器24,階梯式轉換器24形成於低通濾波器134與功率分配器131之間,用來傳遞正交極化接收訊號RX1。 Specifically, please refer to FIG. 2, which is a detailed structural diagram of the separation filter 13 according to an embodiment of the present invention. The connection port 132 has a bend B1, which can be equivalent to a signal reflection surface for reflecting a portion of the orthogonal polarization receiving signal RX1, thereby improving the isolation between the receiving port RP1 and the transmission port TP. The high pass filter 133 is preferably a double stepped (Double Corrugated) filter including a conducting portion 21 and a stepped converter (Corrugated Transformer) 22 and 23. The conducting portion 21 includes a plurality of bends B2, and the high-pass filter 133 is formed in a meandering shape. The stepped converter 22 is formed between one end of the conducting portion 21 and the bend B1 for transmitting the transmission signal TX and for blocking the reflective surface CO as one of the orthogonal polarization receiving signals RX1 to avoid orthogonal polarization reception. The signal RX1 passes through the high pass filter 133. A stepped converter 23 is formed at the other end of the conducting portion 21 for transfer transmission by the transmission port TP Signal TX. The low pass filter 134 includes a stepped converter 24 formed between the low pass filter 134 and the power divider 131 for transmitting the orthogonal polarization receive signal RX1.
需注意的是,階梯式轉換器可視為一匹配元件,設置在元件與元件相連接的交界處,透過設計不同階數及階梯形狀(例如漸寬或漸窄的階梯口徑),可用來匹配元件之間的等效阻抗並減少訊號衰減。舉例來說,階梯式轉換器22為二階、口徑由連接埠132往傳導部21漸窄的形狀;階梯式轉換器23為四階、口徑由傳導部21往傳輸埠TP(未繪於第2圖)漸寬的形狀;階梯式轉換器24為二階、口徑由功率分配器131往低通濾波器134漸寬的形狀。階梯式轉換器的配置方式不限,設計者可依實際需求,不使用階梯式轉換器、分別選用單一個階梯式轉換器22、23或24,或者同時選用多個階梯式轉換器。舉例來說,設計者可同時選用階梯式轉換器22及23、同時選用階梯式轉換器22及24、同時選用階梯式轉換器23及24等。 It should be noted that the stepped converter can be regarded as a matching component, which is arranged at the interface where the component is connected with the component, and can be used to match components by designing different orders and step shapes (for example, stepped or tapered stepped caliber). Equivalent impedance between and reduces signal attenuation. For example, the stepped converter 22 has a second-order shape in which the diameter is gradually narrowed from the connection 埠 132 to the conduction portion 21; the step-type converter 23 is a fourth-order, and the aperture is transmitted from the conduction portion 21 to the 埠TP (not depicted in the second The shape of the stepwise converter 24 is a second-order shape in which the aperture is gradually widened by the power divider 131 to the low-pass filter 134. The configuration of the stepped converter is not limited. The designer can select a single stepped converter 22, 23 or 24 instead of a stepped converter according to actual needs, or select multiple stepped converters at the same time. For example, the designer can select both the stepped converters 22 and 23, the stepped converters 22 and 24, and the stepped converters 23 and 24 at the same time.
在此結構下,彎折B1及B2使高通濾波器133呈一蜿蜒狀,如此可縮小高通濾波器133所佔的面積,相當於減少分離濾波器13及波導管10整體的面積及體積,因此可減少其重量及製造成本。再者,彎折B1搭配階梯式轉換器22可使截止反射面CO反射正交極化接收訊號RX1的效果更佳,也可改善接收埠RP1與傳輸埠TP之間的隔離度。 In this configuration, the bends B1 and B2 cause the high-pass filter 133 to be in a meander shape, so that the area occupied by the high-pass filter 133 can be reduced, which is equivalent to reducing the area and volume of the separation filter 13 and the waveguide 10 as a whole. Therefore, the weight and manufacturing cost can be reduced. Furthermore, the bending B1 and the stepped converter 22 can better reflect the effect of the cut-off reflecting surface CO on the orthogonal polarization receiving signal RX1, and can also improve the isolation between the receiving port RP1 and the transmitting port TP.
簡言之,本發明主要係在高通濾波器133與功率分配器131之間耦接具有彎折B1的連接埠132,除了可縮小分離濾波器13整體的面積及體積,在搭配階梯式轉換器22的設計下,也可改善接收埠RP1與傳輸埠TP之間的隔離度。本領域具通常知識者當可據以修飾變化,而不限於本實施例。 In short, the present invention mainly couples the connection port 132 having the bend B1 between the high-pass filter 133 and the power splitter 131, in addition to reducing the overall area and volume of the separation filter 13, in combination with the stepped converter. Under the design of 22, the isolation between the receiving port RP1 and the transmitting port TP can also be improved. Those skilled in the art can modify the changes as they are not limited to the embodiment.
舉例來說,彎折B1的一角度θ1可任意調整。複數個彎折B2的數量不限,如第2圖所示,高通濾波器133至少具有二個彎折B2。彎折B2的一角度θ2也可任意調整。高通濾波器133與低通濾波器134相距一間距D1。兩相鄰彎折B2之間相距一間距D2。間距D1、D2也可適當調整來調整分離濾波器13的面積及體積,以符合實際需求。 For example, an angle θ1 of the bend B1 can be arbitrarily adjusted. The number of the plurality of bends B2 is not limited. As shown in Fig. 2, the high-pass filter 133 has at least two bends B2. An angle θ2 of the bending B2 can also be arbitrarily adjusted. The high pass filter 133 is spaced apart from the low pass filter 134 by a distance D1. The two adjacent bends B2 are separated by a distance D2. The pitches D1 and D2 can also be appropriately adjusted to adjust the area and volume of the separation filter 13 to meet actual needs.
另一方面,分離濾波器13可為一T型接面(T-junction-type)波導管,用於分離電場平面(E-plane)或磁場平面(H-plane)的無線訊號。換句話說,本發明特殊的彎折B1設計可反射部分的低頻訊號(即正交極化接收訊號RX1),使分離濾波器13分離相同極化但不同頻率的無線訊號(即正交極化接收訊號RX1與傳輸訊號TX)具有較佳的效果。 On the other hand, the separation filter 13 can be a T-junction-type waveguide for separating an electric field plane (E-plane) or a magnetic field plane (H-plane). In other words, the special bending B1 design of the present invention can reflect the low frequency signal of the part (ie, the orthogonal polarization receiving signal RX1), so that the separating filter 13 separates the wireless signals of the same polarization but different frequencies (ie, orthogonal polarization). The receiving signal RX1 and the transmission signal TX) have a better effect.
請參考第3圖,第3圖繪示了傳輸埠TP的插入耗損(Insertion Loss)、回返耗損(Return Loss)以及傳輸埠TP與接收埠RP1的隔
離度。其中插入耗損以實線表示,回返耗損以長虛線表示,隔離度以短虛線表示。傳輸埠TP的操作頻率為13.75~14.5GHz。表格1為第3圖的量測數值:
由表格1可知,傳輸埠TP在操作頻率中具有良好的效能,插入耗損顯示至少94.6%的傳輸訊號TX可由傳輸埠TP傳遞至通用埠CMP。回返耗損顯示小於1.16%的傳輸訊號TX反射至傳輸埠TP。傳輸埠TP與接收埠RP1的隔離度接近0%,兩者之間幾乎無訊號傳遞。 As can be seen from Table 1, the transmission 埠TP has good performance in the operating frequency, and the insertion loss shows that at least 94.6% of the transmission signal TX can be transmitted from the transmission 埠TP to the general-purpose 埠CMP. The return loss shows that the transmission signal TX of less than 1.16% is reflected to the transmission 埠TP. The isolation between the transmission 埠TP and the reception 埠RP1 is close to 0%, and there is almost no signal transmission between the two.
請參考第4圖,第4圖繪示了接收埠RP1的插入耗損、回返耗損以及接收埠RP1與傳輸埠TP的隔離度。其中插入耗損以實線表示,回返耗損以長虛線表示,隔離度以短虛線表示。接收埠RP1的操作頻率為10.7~12.75GHz。表格2為第4圖的量測數值:
由表格2可知,接收埠RP1在操作頻率中具有良好的效能,插入耗損顯示至少92.5%的正交極化接收訊號RX1可由通用埠CMP傳遞至接收埠RP1。回返耗損顯示小於0.85%的正交極化接收訊號RX1反射至接收埠RP1。接收埠RP1與傳輸埠TP的隔離度接近0%,兩者之間幾乎無訊號傳遞。 As can be seen from Table 2, the receiving port RP1 has good performance in the operating frequency, and the insertion loss shows that at least 92.5% of the orthogonal polarization receiving signal RX1 can be transmitted from the general-purpose 埠CMP to the receiving port RP1. The return loss shows that the orthogonal polarization reception signal RX1 of less than 0.85% is reflected to the reception 埠RP1. The isolation between the receiving port RP1 and the transmitting port TP is close to 0%, and there is almost no signal transmission between the two.
綜上所述,本發明主要係在高通濾波器133與功率分配器131之間耦接具有彎折B1的連接埠132,除了可縮小分離濾波器13整體的面積及體積,在搭配階梯式轉換器22的設計下,可使截止反射面CO反射正交極化接收訊號RX1的效果更佳,也可改善接收埠RP1與傳輸埠TP之間的隔離度。多個彎折B1及B2的設計可使高通濾波器133呈蜿蜒狀,如此可將高通濾波器133的面積進一步縮小,相當於減少分離濾波器13及波導管10整體的面積及體積。因此,本發明可減少分離濾波器13及波導管10的重量及製造成本,並提升工程人員安裝衛星通訊收發機的便利性,也維持衛星通訊收發機的耐受性及安全性。 In summary, the present invention mainly couples the connection port 132 having the bend B1 between the high-pass filter 133 and the power splitter 131, except that the area and volume of the entire split filter 13 can be reduced, and the step-by-step conversion is adopted. Under the design of the device 22, the effect of reflecting the orthogonal polarization receiving signal RX1 on the cut-off reflecting surface CO is better, and the isolation between the receiving port RP1 and the transmitting port TP can be improved. The design of the plurality of bends B1 and B2 allows the high-pass filter 133 to be in a meander shape, so that the area of the high-pass filter 133 can be further reduced, which corresponds to reducing the area and volume of the entire separation filter 13 and the waveguide 10. Therefore, the present invention can reduce the weight and manufacturing cost of the separation filter 13 and the waveguide 10, and improve the convenience of the engineer to install the satellite communication transceiver, and also maintain the tolerance and safety of the satellite communication transceiver.
以上所述僅為本發明之較佳實施例,凡依本發明申請專利範圍所做之均等變化與修飾,皆應屬本發明之涵蓋範圍。 The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.
10‧‧‧波導管 10‧‧‧waveguide
11‧‧‧正交模轉換器 11‧‧‧ Orthogonal mode converter
13‧‧‧分離濾波器 13‧‧‧Separation filter
131‧‧‧功率分配器 131‧‧‧Power splitter
132‧‧‧連接埠 132‧‧‧Links
133‧‧‧高通濾波器 133‧‧‧High-pass filter
12、134‧‧‧低通濾波器 12, 134‧‧‧ low-pass filter
21‧‧‧傳導部 21‧‧‧Transmission Department
22、23、24‧‧‧階梯式轉換器 22, 23, 24‧‧‧ stepped converter
TX‧‧‧傳送訊號 TX‧‧‧ transmit signal
RX‧‧‧接收訊號 RX‧‧‧ receiving signal
RX2、RX1‧‧‧正交極化接收訊號 RX2, RX1‧‧‧ orthogonal polarization receiving signal
RP2、RP1‧‧‧接收埠 RP2, RP1‧‧‧ Receiver
TP‧‧‧傳輸埠 TP‧‧‧Transportation
CMP‧‧‧通用埠 CMP‧‧‧Common 埠
B1、B2‧‧‧彎折 B1, B2‧‧‧ bend
D1、D2‧‧‧間距 D1, D2‧‧‧ spacing
θ1、θ2‧‧‧角度 Θ1, θ2‧‧‧ angle
CO‧‧‧截止反射面 CO‧‧‧ cut-off reflector
第1圖為本發明實施例一波導管之示意圖。 Figure 1 is a schematic view of a waveguide according to an embodiment of the present invention.
第2圖為本發明實施例第1圖之分離濾波器的詳細結構示意圖。 Fig. 2 is a detailed structural diagram of a separation filter according to Fig. 1 of the embodiment of the present invention.
第3圖為第1圖之傳輸埠的插入耗損、回返耗損以及傳輸埠與接收埠的隔離度之模擬量測圖。 Figure 3 is an analog measurement of the insertion loss, return loss, and isolation of the transmission chirp and the reception chirp of the transmission diagram of Fig. 1.
第4圖為第1圖之接收埠的插入耗損、回返耗損以及接收埠與傳輸埠的隔離度之模擬量測圖。 Figure 4 is an analog measurement of the insertion loss, return loss, and isolation of the receiving and transmitting ports of the receiving frame of Figure 1.
13‧‧‧分離濾波器 13‧‧‧Separation filter
131‧‧‧功率分配器 131‧‧‧Power splitter
132‧‧‧連接埠 132‧‧‧Links
133‧‧‧高通濾波器 133‧‧‧High-pass filter
134‧‧‧低通濾波器 134‧‧‧Low-pass filter
21‧‧‧傳導部 21‧‧‧Transmission Department
22、23、24‧‧‧階梯式轉換器 22, 23, 24‧‧‧ stepped converter
TX‧‧‧傳送訊號 TX‧‧‧ transmit signal
RX1‧‧‧正交極化接收訊號 RX1‧‧‧orthogonal polarization receiving signal
B1、B2‧‧‧彎折 B1, B2‧‧‧ bend
D1、D2‧‧‧間距 D1, D2‧‧‧ spacing
θ1、θ2‧‧‧角度 Θ1, θ2‧‧‧ angle
CO‧‧‧截止反射面 CO‧‧‧ cut-off reflector
Claims (10)
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EP0661771A2 (en) * | 1993-12-28 | 1995-07-05 | Nec Corporation | Branching filter for transmitter-receiver |
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US4912436A (en) * | 1987-06-15 | 1990-03-27 | Gamma-F Corporation | Four port dual polarization frequency diplexer |
FR2740614B1 (en) * | 1995-10-31 | 1998-04-24 | Nec Corp | MICROWAVE SEPARATION FILTER |
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J. Esteban and J. M. Rebollar, "Design and Optimization of a Compact Ka-band Antenna diplexer", Antennas and Propagation Society Internation Symposium June 1995, vol.1, p.p. 148-151. * |
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