WO2021003836A1 - 滤波器及其多零点实现模块 - Google Patents

滤波器及其多零点实现模块 Download PDF

Info

Publication number
WO2021003836A1
WO2021003836A1 PCT/CN2019/105225 CN2019105225W WO2021003836A1 WO 2021003836 A1 WO2021003836 A1 WO 2021003836A1 CN 2019105225 W CN2019105225 W CN 2019105225W WO 2021003836 A1 WO2021003836 A1 WO 2021003836A1
Authority
WO
WIPO (PCT)
Prior art keywords
resonator
coupling
resonators
loop
implementation module
Prior art date
Application number
PCT/CN2019/105225
Other languages
English (en)
French (fr)
Inventor
谢懿非
丁海
邸英杰
林显添
Original Assignee
京信通信技术(广州)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京信通信技术(广州)有限公司 filed Critical 京信通信技术(广州)有限公司
Publication of WO2021003836A1 publication Critical patent/WO2021003836A1/zh

Links

Images

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/06—Cavity resonators

Definitions

  • the invention relates to the technical field of communication equipment, in particular to a filter and its multi-zero realization module.
  • the filter As a frequency selection device, the filter is a very critical component in communication equipment. With the rapid development of communication technology, whether the device can achieve low insertion loss has become the key to restrict its development. The usual practice is to increase the number of zeros to widen the passband and improve suppression, so as to achieve the purpose of reducing insertion loss. Traditional filters cannot effectively reduce the insertion loss due to the small number of zeros.
  • the multi-zero implementation module can increase the number of zeros more easily, thereby effectively reducing the insertion loss; in this way, the multi-zero implementation module is used for filtering
  • the insertion loss and out-of-band suppression of the device can reach a relatively good level, and the performance is excellent.
  • a multi-zero implementation module of a filter which includes at least eight resonators, and at least eight resonators are arranged in sequence along a signal transmission path and form a main loop, and along the signal transmission direction, the main loop is not Two adjacent resonators are connected to each other to form a coupling branch, so that at least two coupling loops are formed in the main loop, and the two resonators at the head and tail of the main loop are provided between There is a coupling adjustment structure, and each of the coupling loops is provided with a capacitive coupling structure.
  • a filter including the multi-zero implementation module.
  • At least eight resonators are arranged in sequence along the signal transmission path to form the main circuit; at the same time, two non-adjacent resonators in the main circuit are processed along the signal transmission direction of the main circuit.
  • the coupling can be connected to form a coupling branch, and the coupling branch can be used to form at least two coupling loops in the main loop; and a coupling adjustment structure is provided between the first and tail resonators that form the main loop, so that the head and tail The two resonators are coupled and connected so that the signal of the main circuit can be smoothly transmitted along the signal transmission path; in addition, a capacitive coupling structure is provided in each coupling circuit, thereby generating a phase difference in each coupling circuit Therefore, a pair of zeros can be generated in each coupling loop, so that at least two pairs of zeros are generated in the entire main circuit, which increases the number of zeros, which can effectively reduce insertion loss, improve out-of-band suppression, and have excellent performance, which is beneficial
  • the simulation design is simplified, the structure is simple, and the above-mentioned coupling adjustment structure can be used to conveniently realize the adjustment of the transmission zero point.
  • FIG. 1 is a schematic structural diagram of a multi-zero implementation module of a filter including eight resonators according to an embodiment
  • Fig. 2 is an equivalent circuit diagram of the multi-zero implementation module of the filter shown in Fig. 1;
  • Fig. 3 is an equivalent circuit diagram of a multi-zero implementation module including eight resonators in another embodiment
  • FIG. 4 is an equivalent circuit diagram of a multi-zero implementation module including eight resonators in another embodiment
  • FIG. 5 is an equivalent circuit diagram of a multi-zero implementation module including eight resonators in another embodiment
  • Fig. 6 is an equivalent circuit diagram of a multi-zero implementation module including eight resonators in another embodiment
  • FIG. 7 is an equivalent circuit diagram of a multi-zero implementation module including eight resonators in another embodiment
  • FIG. 8 is an equivalent circuit diagram of a multi-zero implementation module including eight resonators in another embodiment
  • Fig. 9 is an equivalent circuit diagram of a multi-zero implementation module including eight resonators in another embodiment
  • FIG. 10 is an equivalent circuit diagram of a multi-zero implementation module including eight resonators in another embodiment
  • FIG. 11 is a schematic structural diagram of a multi-zero implementation module including ten resonators according to an embodiment
  • Figure 12 is an equivalent circuit diagram of the multi-zero implementation module shown in Figure 11;
  • FIG. 13 is a schematic structural diagram of another embodiment of a multi-zero point realization module including ten resonators
  • Fig. 14 is an equivalent circuit diagram of the multi-zero implementation module of the filter shown in Fig. 13;
  • FIG. 15 is an equivalent circuit diagram of a multi-zero implementation module including ten resonators in another embodiment
  • FIG. 16 is an equivalent circuit diagram of a multi-zero implementation module including ten resonators in another embodiment
  • FIG. 17 is a schematic diagram of a main loop including ten resonators in the multi-zero implementation module of an embodiment
  • Multi-zero implementation module 110, first resonator, 120, second resonator, 130, third resonator, 140, fourth resonator, 150, fifth resonator, 160, sixth resonator, 170 , Seventh resonator, 180, eighth resonator, 200, ninth resonator, 210, tenth resonator, 220, eleventh resonator, 230, twelfth resonator, 240, thirteenth resonator , 250, fourteenth resonator, 260, fifteenth resonator, 270, sixteenth resonator, 280, seventeenth resonator, 290, eighteenth resonator, 300, nineteenth resonator, 400 , Twentieth resonator, 1000, main circuit, 1100, coupling branch, 1200, coupling circuit, 2000, coupling adjustment structure, 2100, adjustment tank, 3000, capacitive coupling structure.
  • a filter multi-zero implementation module 10 which includes at least eight resonators, and at least eight resonators are along the signal transmission path.
  • the main loop 1000 is arranged and formed in sequence, and along the signal transmission direction, two non-adjacent resonators in the main loop 1000 are connected to each other to form a coupling branch 1100, so that at least two coupling loops 1200 are formed in the main loop 1000.
  • a coupling adjustment structure 2000 is provided between the two resonators at the head and tail of the main loop 1000, and each coupling loop 1200 is provided with a capacitive coupling structure 3000.
  • At least eight resonators are arranged in sequence along the signal transmission path to form the main circuit 1000; at the same time, along the signal transmission direction of the main circuit 1000, the main circuit 1000 is not adjacent Connecting the two resonators to form a coupling branch 1100, and using the coupling branch 1100 to form at least two coupling circuits 1200 in the main circuit 1000; and, in the first and last two resonators forming the main circuit 1000
  • the coupling adjustment structure 2000 is arranged between the two resonators, so that the first and the last two resonators are coupled and connected so that the signal of the main circuit 1000 can be smoothly transmitted along the signal transmission path; in addition, a capacitor is provided in each coupling circuit 1200
  • the sexual coupling structure 3000 generates a phase difference in each coupling loop 1200, so that a pair of zeros can be generated in each coupling loop 1200, thereby making the entire main loop 1000 produce at least two pairs of zeros, increasing the number of zeros
  • the first and last two resonators in the main circuit 1000 refer to the signal transmission path along the main circuit 1000.
  • the resonator used as a signal input is the head resonator, and the resonator used as a signal output is the tail resonator. ; If the resonator does not participate in the signal transmission of the main loop 1000, even if the resonator is connected to the resonator in the main loop 1000, the resonator cannot be considered as the first resonator and the tail resonator.
  • the ninth resonator 200 is connected to the twentieth resonator 400
  • the eighteenth resonator 290 is connected to the nineteenth resonator 300.
  • the nineteenth resonator 300 and the twentieth resonator 400 It does not participate in the composition of the main circuit 1000. Therefore, the nineteenth resonator 300 and the twentieth resonator 400 are not the first and the last two resonators, but in this embodiment, as far as the entire filter is concerned, it serves as The input terminal for signal input and the output terminal for signal output may also be provided in the nineteenth resonator 300 and the twentieth resonator 400, respectively.
  • the number of resonators is at least eight, and the number of resonators can be flexibly adjusted according to actual usage requirements.
  • the main loop 1000 refers to the loop formed by connecting the resonators 110, 120, 130, 140, 150, 160, 170, 180 along the signal transmission path in turn.
  • the first coupling loop 1200 includes four resonators, and the second coupling The loop 1200 includes six resonators, and the two coupling loops 1200 share a capacitive coupling structure 3000, that is, the capacitive coupling structure 3000 is disposed in the coupling branch 1100.
  • a phase difference is generated in each coupling loop 1200, so that two pairs of zeros can be generated; thus, the multi-zero implementation module 10 including eight resonators can generate two pairs of zeros, which is compared with a traditional pair of eight resonators.
  • zero points a pair of zero points is generated, and in actual application, only a capacitive coupling structure is required, and the first and tail resonators in the main loop are connected.
  • the structure is simple and the transmission can be easily realized. Adjustment of zero point.
  • the eight resonators are the first resonator 110, the second resonator 120, the third resonator 130, the fourth resonator 140, the fifth resonator 150, and the sixth resonator respectively.
  • the resonator 160, the seventh resonator 170, and the eighth resonator 180; the third resonator 130, the fourth resonator 140, the fifth resonator 150, and the sixth resonator 160 are sequentially arranged on the first side, and the second resonator 120, the first resonator 110, the eighth resonator 180, and the seventh resonator 170 are sequentially disposed on the second side opposite to the first side, that is, four of the eight resonators are sequentially disposed on the first side, The other four resonators are sequentially arranged on the second side.
  • An alternative structure is to refer to FIGS. 1 to 8 together.
  • the first resonator 110 and the fourth resonator 140 can be connected to each other to form a coupling branch 1100.
  • the first The coupling loop 1200 includes a first resonator 110, a second resonator 120, a third resonator 130, and a fourth resonator 140.
  • the second coupling loop 1200 includes a fourth resonator 140, a fifth resonator 150, and a sixth resonator.
  • the device 160, the seventh resonator 170, the eighth resonator 180, and the first resonator 110 Another alternative structure is, referring to FIG.
  • the first coupling loop 1200 includes the first resonator 110 , The second resonator 120, the third resonator 130, the fourth resonator 140, the fifth resonator 150 and the eighth resonator 180
  • the second coupling loop 1200 includes the fifth resonator 150, the sixth resonator 160, The seventh resonator 170 and the eighth resonator 180.
  • a coupling adjustment structure 2000 is provided between the first resonator and the tail resonator in the main loop 1000, and only the coupling branch 1100 is provided with a capacitive coupling structure 3000.
  • a coupling branch 1100 is provided so that two coupling circuits 1200 are formed in the main circuit 1000, and the eight resonators transmit signals along The paths are arranged in sequence and form the main circuit 1000, and the coupling branch 1100 can be set up so that the eight resonators can form two coupling circuits 1200 correspondingly.
  • the first coupling circuit 1200 includes four resonators, and the second coupling circuit The 1200 includes six resonators, and the two coupling loops 1200 are each provided with a capacitive coupling structure 3000 separately. That is, the capacitive coupling structure 3000 in each coupling loop 1200 is arranged between any two adjacent resonators except the coupling branch 1100. In this way, two pairs of transmission zeros can also be generated, and the structure is simple and easy to manufacture.
  • the eight resonators are the first resonator 110, the second resonator 120, the third resonator 130, the fourth resonator 140, the fifth resonator 150, and the sixth resonator respectively.
  • the resonator 160, the seventh resonator 170, and the eighth resonator 180 are arranged in sequence along the signal transmission path and form the main circuit 1000; the third resonator 130, the fourth resonator 140, and the fifth resonator 150
  • the sixth resonator 160 is sequentially arranged on the first side
  • the second resonator 120, the first resonator 110, the eighth resonator 180, and the seventh resonator 170 are sequentially arranged on the second side opposite to the first side.
  • One resonator 110 and the fourth resonator 140 or between the fifth resonator 150 and the eighth resonator 180 are connected to each other to form a coupling branch 1100.
  • a capacitive coupling structure 3000 is provided between any two adjacent resonators.
  • a capacitive coupling structure 3000 is provided between two adjacent resonators.
  • a coupling adjustment structure 2000 is also provided between the first resonator and the tail resonator in the main loop 1000.
  • the first resonator 110 and the fourth resonator 140 can be connected, or the fifth resonator 150 and the eighth resonator 180 can be connected to form a coupling branch 1100, so that the main circuit 1000 forms two A coupling loop 1200.
  • the capacitive coupling structure 3000 is then arranged between the two adjacent resonators in each coupling loop 1200 except for the coupling branch 1100, so that a phase difference is generated in the two coupling loops 1200, so that each A pair of zero points are generated in the coupling loop 1200, that is, two pairs of zero points can be generated by the two coupling loops 1200, the number of zero points is increased, the structure is simple, the simulation design is simplified, and the adjustment of the transmission zero point can be conveniently realized.
  • the first coupling circuit 1200 includes the first resonator 110, the second resonator 120, and the second resonator.
  • the third resonator 130 and the fourth resonator 140, the second coupling loop 1200 includes the fourth resonator 140, the fifth resonator 150, the sixth resonator 160, the seventh resonator 170, the eighth resonator 180 and the first The resonator 110; thus in the first coupling loop 1200, the capacitive coupling structure 3000 can be arranged between the first resonator 110 and the second resonator 120, or the capacitive coupling structure 3000 can be arranged on the second resonator 120 and the third resonator 130 (as shown in FIGS.
  • the capacitive coupling structure 3000 is arranged between the third resonator 130 and the fourth resonator 140 (as shown in FIGS. 8 and 9) Show); at the same time, in the second coupling loop 1200, the capacitive coupling structure 3000 can be arranged between the fourth resonator 140 and the fifth resonator 150 (as shown in Figures 3 and 8), or the capacitive coupling structure 3000 The capacitive coupling structure 3000 is disposed between the fifth resonator 150 and the sixth resonator 160 (as shown in FIG.
  • the capacitive coupling structure 3000 is disposed between the sixth resonator 160 and the seventh resonator 170 ( 5), or the capacitive coupling structure 3000 is disposed between the seventh resonator 170 and the eighth resonator 180 (as shown in Fig. 6), or the capacitive coupling structure 3000 is disposed on the eighth resonator Between 180 and the first resonator 110 (as shown in FIGS. 7 and 9).
  • the first coupling circuit 1200 includes the first resonator 110, the second resonator 120, the third resonator 130, and the The four resonator 140, the fifth resonator 150 and the eighth resonator 180, and the second coupling loop 1200 includes the fifth resonator 150, the sixth resonator 160, the seventh resonator 170 and the eighth resonator 180.
  • the capacitive coupling structure 3000 can be arranged between the first resonator 110 and the second resonator 120, or the capacitive coupling structure 3000 can be arranged between the second resonator 120 and the third resonator 120.
  • the capacitive coupling structure 3000 may be arranged between the eighth resonator 180 and the first resonator 110; at the same time, in the second coupling loop 1200, the capacitive coupling structure 3000 may be arranged on the fifth resonator 150 Between the sixth resonator 160, or the capacitive coupling structure 3000 between the sixth resonator 160 and the seventh resonator 170, or the capacitive coupling structure 3000 between the seventh resonator 170 and the eighth resonator ⁇ 180 between.
  • the first and last two resonators in the main loop 1000 are located on the first side and the second side, respectively.
  • the first resonator used as a signal input and the tail resonator used as a signal output in the main circuit 1000 are respectively arranged on both sides of the main circuit 1000, so that the positions of the first resonator and the tail resonator can be flexible according to actual use requirements. Make adjustments to meet usage requirements.
  • the first and last two resonators in the main circuit 1000 are both located on the first side; or, the first and last two resonators in the main circuit 1000 are both located on the second side. Side (as shown in Figure 1 to Figure 10).
  • the first resonator used as a signal input and the tail resonator used as a signal output in the main circuit 1000 are arranged on the same side of the main circuit 1000. It is only necessary to open a corresponding connection port on a circuit board and other connecting elements to simultaneously connect with The signal input port and signal output port of the main circuit 1000 are connected for easy assembly.
  • two coupling branches 1100 are provided, so that three coupling circuits 1200 are formed in the main circuit 1000, and three coupling circuits 1200
  • One of the coupling loops is formed by six resonators, and the remaining two coupling loops 1200 are formed by four resonators.
  • ten resonators are arranged in sequence along the signal transmission path and form the main loop 1000.
  • Two coupling branches 1100 are used to form three coupling loops 1200 in the main loop 1000.
  • One coupling loop 1200 includes four resonators.
  • One coupling loop 1200 includes six resonators, and another coupling loop 1200 includes four resonators.
  • two coupling branches 1100 are provided so that three coupling circuits 1200 are formed in the main circuit 1000; three coupling circuits In 1200, two adjacent coupling loops 1200 share a capacitive coupling structure 3000, and another coupling loop 1200 is provided with a capacitive coupling structure 3000 alone.
  • ten resonators are arranged in sequence along the signal transmission path and form the main loop 1000.
  • Two coupling branches 1100 are used to form three coupling loops 1200 in the main loop 1000; two adjacent coupling loops 1200 share a capacitive The coupling structure 3000, that is, the capacitive coupling structure 3000 is disposed in the coupling branch 1100 of the two adjacent coupling loops 1200, so that a phase difference is generated in the two adjacent coupling loops 1200, so that two pairs of zero points can be generated ;
  • a capacitive coupling structure 3000 is provided between any two adjacent resonators except for the coupling branch 1100, so that the last coupling loop 1200 generates a pair of zeros; thereby including ten
  • the multi-zero implementation module 10 of two resonators can generate three pairs of zeros. Compared with the two pairs of zeros of the traditional ten resonators, an additional pair of zeros is generated, which increases the number of zeros, and has a simple structure, which simplifies the simulation design. And can easily realize the adjustment of the transmission zero point.
  • the ten resonators are respectively the ninth resonator 200, the tenth resonator 210, the eleventh resonator 220, the twelfth resonator 230, the thirteenth resonator 240, the fourteenth resonator 250, and the Fifteenth resonator 260, sixteenth resonator 270, seventeenth resonator 280, and eighteenth resonator 290, eleventh resonator 220, twelfth resonator 230, thirteenth resonator 240, tenth
  • the four resonator 250 and the fifteenth resonator 260 are sequentially arranged on the first side, the tenth resonator 210, the ninth resonator 200, the eighteenth resonator 290, the seventeenth resonator 280, and the sixteenth resonator 270 They are sequentially arranged on the second side opposite to the first side, between the ninth resonator 200 and the t
  • the sixteenth resonator 270, the seventeenth resonator 280, and the eighteenth resonator 290 are sequentially arranged along the signal transmission path and form the main loop 1000, wherein a coupling adjustment structure 2000 is also provided between the first resonator and the tail resonator.
  • the coupling loop 1200 where the other coupling branch 1100 is located is provided with a capacitive coupling structure 3000 alone, that is, the coupling loop 1200 is in addition to the coupling branch 1100.
  • a capacitive coupling structure 3000 is provided between any two adjacent resonators, so that the coupling loop 1200 can also produce a pair of zeros; thus, the three coupling loops 1200 produce three pairs of zeros, increasing the number of zeros , And the structure is simple, the simulation design is simplified, and the adjustment of the transmission zero point can be conveniently realized.
  • the ninth resonator 200 and the twelfth resonator 230 are connected, and the eighteenth resonator 290 and the thirteenth resonator 240 are connected to form two coupling branches 1100.
  • the ninth resonator 200, the tenth resonator 210, the eleventh resonator 220, and the twelfth resonator 230 are coupled to form a coupling loop 1200
  • the eighth resonator 290 and the ninth resonator 200 are coupled to form a coupling loop 1200
  • the thirteenth resonator 240, the fourteenth resonator 250, the fifteenth resonator 260, the sixteenth resonator 270, and the seventeenth resonator 280 and the eighteenth resonator 290 are coupled to form a coupling loop 1200, so that a capaci
  • the ninth resonator 200 and the twelfth resonator 230 are connected and the seventeenth resonator 280 and the fourteenth resonator 250 are connected to form two coupling branches 1100, the ninth resonator 200.
  • the tenth resonator 210, the eleventh resonator 220, and the twelfth resonator 230 are coupled to form a coupling loop 1200.
  • the twelfth resonator 230, the thirteenth resonator 240, the fourteenth resonator 250, and the The seventeenth resonator 280, the eighteenth resonator 290, and the ninth resonator 200 are coupled to form a coupling loop 1200.
  • the device 280 is coupled to form a coupling loop 1200, so that a capacitive coupling structure 3000 (as shown in FIGS. 11 and 12) can be set between the ninth resonator 200 and the twelfth resonator 230, and then a capacitive coupling
  • the structure 3000 is disposed between the fourteenth resonator 250 and the fifteenth resonator 260, or another capacitive coupling structure 3000 is disposed between the fifteenth resonator 260 and the sixteenth resonator 270 (as shown in FIG. 11 And shown in FIG.
  • capacitive coupling structure 3000 is disposed between the sixteenth resonator 270 and the seventeenth resonator 280; or it may be between the seventeenth resonator 280 and the fourteenth resonator 280
  • a capacitive coupling structure 3000 is provided between 250 (as shown in FIG. 13 and FIG. 14), and then a capacitive coupling structure 3000 is provided between the ninth resonator 200 and the tenth resonator 210, or another capacitive coupling structure 3000
  • the capacitive coupling structure 3000 is disposed between the tenth resonator 210 and the eleventh resonator 220 (as shown in FIGS.
  • a capacitive coupling structure 3000 is further disposed between the eleventh resonator 220 and the eleventh resonator 220 and the eleventh resonator 220.
  • the eighteenth resonator 290 and the thirteenth resonator 240 are connected and the seventeenth resonator 280 and the fourteenth resonator 250 are connected to form two coupling branches 1100, the ninth resonance
  • the device 200, the tenth resonator 210, the eleventh resonator 220, the twelfth resonator 230, the thirteenth resonator 240, and the eighteenth resonator 290 are coupled to form a coupling loop 1200.
  • the thirteenth resonator 240, The fourteenth resonator 250, the seventeenth resonator 280, and the eighteenth resonator 290 are coupled to form a coupling loop 1200.
  • the seven resonators 280 are coupled to form a coupling loop 1200, so that a capacitive coupling structure 3000 can be provided between the eighteenth resonator 290 and the thirteenth resonator 240, and then a capacitive coupling structure 3000 can be provided on the fourteenth Between the resonator 250 and the fifteenth resonator 260, or place another capacitive coupling structure 3000 between the fifteenth resonator 260 and the sixteenth resonator 270, or place another capacitive coupling structure 3000 Between the sixteenth resonator 270 and the seventeenth resonator 280; alternatively, a capac
  • two coupling branches 1100 are provided so that three coupling circuits 1200 are formed in the main circuit 1000, and three coupling circuits 1200 A capacitive coupling structure 3000 is separately provided.
  • ten resonators are arranged in sequence along the signal transmission path and form the main loop 1000.
  • Two coupling branches 1100 are used to form three coupling loops 1200 in the main loop 1000.
  • Each coupling loop 1200 is provided with a capacitive coupling.
  • the structure 3000 that is, the capacitive coupling structure 3000 in each coupling loop 1200 is arranged between any two adjacent resonators except the coupling branch 1100, so that a phase difference is generated in each coupling loop 1200, Thereby, a pair of zeros can be generated in each coupling loop 1200; thus, the multi-zero realization module 10 including ten resonators can generate three pairs of zeros, which is more than the two pairs of zeros with traditional ten resonators. A pair of zeros is added, the number of zeros is increased, the structure is simple, the simulation design is simplified, and the adjustment of the transmission zero can be conveniently realized.
  • the ten resonators are respectively the ninth resonator 200, the tenth resonator 210, the eleventh resonator 220, the twelfth resonator 230, and the thirteenth resonator 240.
  • a capacitive coupling structure 3000 is also provided between any two adjacent resonators except for the coupling branch 1100. Furthermore, in the third coupling loop 1200, a capacitive coupling structure 3000 is also provided between any two adjacent resonators except for the coupling branch 1100.
  • the sixteenth resonator 270, the seventeenth resonator 280, and the eighteenth resonator 290 are sequentially arranged along the signal transmission path and form the main loop 1000, wherein a coupling adjustment structure 2000 is also provided between the first resonator and the tail resonator.
  • three capacitive coupling structures 3000 are respectively arranged in a one-to-one correspondence between two adjacent resonators in the three coupling loops 1200 except for the coupling branch 1100, so that a phase difference is generated in the three coupling loops 1200. Therefore, a pair of zeros can be generated in each coupling loop 1200, that is, three coupling loops 1200 can generate three pairs of zeros, increasing the number of zeros, and the structure is simple, the simulation design is simplified, and the transmission of zeros can be easily realized. adjust.
  • the ninth resonator 200 and the twelfth resonator 230 are connected, and the eighteenth resonator 290 and the thirteenth resonator 240 are connected to form two coupling branches 1100.
  • the ninth resonator 200, the tenth resonator 210, the eleventh resonator 220, and the twelfth resonator 230 are coupled to form a coupling loop 1200
  • the eighth resonator 290 and the ninth resonator 200 are coupled to form a coupling loop 1200
  • the thirteenth resonator 240, the fourteenth resonator 250, the fifteenth resonator 260, the sixteenth resonator 270, and the seventeenth resonator 280 and the eighteenth resonator 290 are coupled to form a coupling loop 1200, so that a capaci
  • the ninth resonator 200 and the twelfth resonator 230 are connected and the seventeenth resonator 280 and the fourteenth resonator 250 are connected to form two coupling branches 1100, the ninth resonator 200.
  • the tenth resonator 210, the eleventh resonator 220, and the twelfth resonator 230 are coupled to form a coupling loop 1200.
  • the twelfth resonator 230, the thirteenth resonator 240, the fourteenth resonator 250, and the The seventeenth resonator 280, the eighteenth resonator 290, and the ninth resonator 200 are coupled to form a coupling loop 1200.
  • the device 280 is coupled to form a coupling loop 1200, so that a capacitive coupling structure 3000 can be disposed between the ninth resonator 200 and the tenth resonator 210, or a capacitive coupling structure 3000 can be disposed between the tenth resonator 210 and the tenth resonator.
  • a capacitive coupling structure 3000 can be disposed between the eleventh resonator 220 and the eleventh resonator 220 (as shown in FIG. 15 and FIG.
  • a capacitive coupling structure 3000 is disposed between the eleventh resonator 220 and the twelfth resonator 230; at the same time, a capacitor The capacitive coupling structure 3000 is disposed between the twelfth resonator 230 and the thirteenth resonator 240 (as shown in FIG.
  • a capacitive coupling structure 3000 is disposed between the thirteenth resonator 240 and the fourteenth resonator Or a capacitive coupling structure 3000 between the seventeenth resonator 280 and the eighteenth resonator 290, or a capacitive coupling structure 3000 between the eighteenth resonator 290 and the ninth resonator 290 Between the resonators 200 (as shown in FIG. 16); and, a capacitive coupling structure 3000 is provided between the fourteenth resonator 250 and the fifteenth resonator 260, or a capacitive coupling structure 3000 is provided Between the fifteenth resonator 260 and the sixteenth resonator 270 (as shown in FIG.
  • a capacitive coupling structure 3000 is provided between the sixteenth resonator 270 and the seventeenth resonator 280 between.
  • the eighteenth resonator 290 and the thirteenth resonator 240 are connected and the seventeenth resonator 280 and the fourteenth resonator 250 are connected to form two coupling branches 1100, the ninth resonance
  • the device 200, the tenth resonator 210, the eleventh resonator 220, the twelfth resonator 230, the thirteenth resonator 240, and the eighteenth resonator 290 are coupled to form a coupling loop 1200.
  • the thirteenth resonator 240, The fourteenth resonator 250, the seventeenth resonator 280, and the eighteenth resonator 290 are coupled to form a coupling loop 1200.
  • the seven resonators 280 are coupled to form a coupling loop 1200, so that a capacitive coupling structure 3000 can be disposed between the ninth resonator 200 and the tenth resonator 210, or a capacitive coupling structure 3000 can be disposed on the tenth resonator 210 and the eleventh resonator 220, or a capacitive coupling structure 3000 between the eleventh resonator 220 and the twelfth resonator 230, or a capacitive coupling structure 3000 on the twelfth resonator Between the resonator 230 and the thirteenth reson
  • the first and last two resonators in the main loop 1000 are located on the first side and the second side, respectively.
  • the first resonator used as a signal input and the tail resonator used as a signal output in the main circuit 1000 are respectively arranged on both sides of the main circuit 1000, so that the positions of the first resonator and the tail resonator can be flexible according to actual use requirements. Make adjustments to meet usage requirements.
  • the first and last two resonators in the main circuit 1000 are both located on the first side; or, the first and last two resonators in the main circuit 1000 are both located on the second side. Side (as shown in Figure 11 to Figure 16).
  • the first resonator used as a signal input and the tail resonator used as a signal output in the main circuit 1000 are arranged on the same side of the main circuit 1000. It is only necessary to open a corresponding connection port on a circuit board and other connecting elements to simultaneously connect with The signal input port and signal output port of the main circuit 1000 are connected for easy assembly.
  • the coupling adjustment structure 2000 is configured as a cross-coupling structure.
  • the cross-coupling structure When the cross-coupling structure is capacitive coupling, the cross-coupling structure serves as the capacitive coupling in the coupling loop 1200. Structure 3000.
  • the cross-coupling structure can be used as the capacitive coupling structure 3000, so that the coupling loop 1200 can be adjusted only by adjusting the capacitive coupling of the cross-coupling structure.
  • the adjustment structure 2000 adjusts the inductive coupling between the first and the last two resonators, and then uses the other capacitive coupling structure 3000 in the coupling loop 1200 for adjustment, the adjustment of the coupling loop 1200 is simpler and more convenient.
  • the coupling adjustment structure 2000 of the foregoing embodiment can be implemented by adding a coupling medium.
  • the coupling amount can be adjusted by adjusting the depth of the coupling rod inserted into the coupling hole; it can also be achieved by removing the coupling medium, for example, The adjustment slot of the corresponding size is opened to realize the adjustment of the coupling amount.
  • It can be any existing structure that can adjust the coupling amount. I will not repeat it here. It only needs to be able to adjust the coupling amount so that the main loop 1000 The two resonators at the head and tail can be inductively coupled or capacitively coupled.
  • the coupling adjustment structure 2000 includes an adjustment slot 2100 disposed between the two resonators at the head and tail, and one end of the adjustment slot 2100 is connected to the resonator.
  • the spacing between the side walls is adjustable. In this way, the distance between one end of the adjusting slot 2100 and the side wall of the resonator can be flexibly adjusted, thereby adjusting the coupling amount between the two resonators at the head and the tail.
  • the distance between one end of the adjusting groove 2100 and the side wall of the resonator is processed as small as possible or directly Disconnecting the first and last two resonators will increase the difficulty of production.
  • the distance between one end of the adjusting groove 2100 and the side wall of the resonator is too small, it will increase sintering. Molding is difficult; at the same time, the entire filter is easily broken, which is not conducive to product quality.
  • the coupling adjustment structure 2000 is added between the first and the last resonators, so that the gap between one end of the adjustment slot 2100 and the side wall of the resonator can be flexibly increased.
  • the distance between one end of the adjusting slot 2100 and the side wall of the resonator is widened, so that the two resonators at the head and the tail are coupled to each other, so that the resonators arranged in sequence along the signal transmission path form the main circuit 1000 , And then by setting the coupling branch 1100 to form at least two coupling loops 1200 in the main loop 1000, and then flexibly setting the position of the capacitive coupling structure 3000, so as to facilitate the adjustment of the transmission zero point, which not only has low production difficulty, but also greatly
  • the margin of production index is improved, the overall strength of the filter is also increased, and the number of zeros can be increased, which can effectively reduce the insertion loss, improve the out-of-band suppression, and improve the performance of the filter.
  • the distance between one end of the adjusting groove 2100 and the side wall of the resonator is greater than or equal to 0.5 mm. In this way, the distance between one end of the slot and the side wall of the resonator can be made appropriate, the production difficulty is reduced, the risk of breakage of the filter is avoided, and the overall strength of the filter can be ensured.
  • the number of resonators is ten
  • the distance between one end of the adjusting groove 2100 and the sidewall of the resonator is L
  • L may be 0.5 mm (as shown in the figure 19), 1mm (shown in Figure 20), 1.8mm (shown in Figure 21) or 2.3mm (shown in Figure 22), compared to the traditional L is 0mm (shown in Figure 18) or approximately
  • the filter has high strength, structural stability and reliability, is not easy to break, and is easy to process. It can also increase the number of zero points and improve the performance of the filter.
  • the capacitive coupling structure 3000 of the foregoing embodiment can be implemented and adjusted by providing coupling grooves and coupling holes, and can be any existing structure capable of adjusting the amount of capacitive coupling, which will not be repeated here.
  • a filter is also provided, which includes the multi-zero implementation module 10 of any one of the above embodiments.
  • At least eight resonators are arranged in sequence along the signal transmission path to form the main circuit 1000; at the same time, the two non-adjacent resonators in the main circuit 1000 are processed along the signal transmission direction of the main circuit 1000.
  • a coupling branch 1100 Connected to form a coupling branch 1100, using the coupling branch 1100 to form at least two coupling loops 1200 in the main loop 1000; and a coupling adjustment structure is provided between the first and last two resonators forming the main loop 1000 2000, the first and last two resonators are coupled and connected so that the signal of the main circuit 1000 can be smoothly transmitted along the signal transmission path; in addition, a capacitive coupling structure 3000 is provided in each coupling circuit 1200, thereby A phase difference is generated in each coupling loop 1200, so that a pair of zero points can be generated, so that the entire main loop 1000 generates at least two pairs of zero points, which increases the number of zero points, thereby effectively reducing insertion loss and having excellent performance.
  • the filter is a dielectric filter or a metal cavity filter.
  • the number of zeros of various types of filters can be adjusted accordingly, which can effectively reduce insertion loss and improve performance.
  • the overall strength of the dielectric filter or the metal cavity filter can be improved, and the production is convenient, and the production difficulty is reduced.
  • the coupling adjustment structure 2000 includes an adjustment slot 2100 arranged between the two resonators at the head and tail. The distance between one end of the adjustment slot 2100 and the side wall of the resonator is wider, which reduces The difficulty of production and processing enhances the overall strength.

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

本发明公开了一种滤波器及其多零点实现模块，滤波器的多零点实现模块包括至少八个谐振器，至少八个所述谐振器沿信号传输路径依次设置并形成主回路，且沿信号传输方向，主回路中不相邻的两个所述谐振器之间相互连接形成耦合支路，以使所述主回路中形成至少两个耦合回路，所述主回路中首、尾的两个所述谐振器之间设有耦合调节结构，且每个所述耦合回路均设有容性耦合结构。所述多零点实现模块能够更容易的增加零点个数，从而能够有效的降低插入损耗；如此，采用所述多零点实现模块的滤波器的插入损耗和带外抑制均可以达到较优水平，性能优良。

Description

滤波器及其多零点实现模块 技术领域
本发明涉及通信设备技术领域，具体涉及一种滤波器及其多零点实现模块。
背景技术
滤波器作为一种选频器件，是通信设备中一个十分关键的部件。随着通信技术的快速发展，器件能否做到低插入损耗成为了制约其发展的关键。通常的做法为增加零点个数以使得通带变宽、抑制变好，从而达到降低插入损耗的目的。传统的滤波器由于零点个数较少，无法有效的降低插入损耗。
发明内容
基于此，提出了一种滤波器及其多零点实现模块，所述多零点实现模块能够更容易的增加零点个数，从而能够有效的降低插入损耗；如此，采用所述多零点实现模块的滤波器的插入损耗和带外抑制均可以达到较优水平，性能优良。
其技术方案如下：
一方面，提供了一种滤波器的多零点实现模块，包括至少八个谐振器，至少八个所述谐振器沿信号传输路径依次设置并形成主回路，且沿信号传输方向，主回路中不相邻的两个所述谐振器之间相互连接形成耦合支路，以使所述主回路中形成至少两个耦合回路，所述主回路中首、尾的两个所述谐振器之间设有耦合调节结构，且每个所述耦合回路均设有容性耦合结构。
另一方面，提供了一种滤波器，包括所述的多零点实现模块。
上述滤波器及其多零点实现模块，至少八个谐振器沿信号传输路径依次排布从而形成主回路；同时，沿主回路的信号传输方向，将主回路中不相邻的两个谐振器进行连接从而能够形成耦合支路，利用耦合支路从而能够在主回路中形成至少两个耦合回路；并且，在形成主回路的首、尾两个谐振器之间设置耦合调节结构，使得首、尾两个谐振器之间耦合连接而使得主回路的信号能够顺畅的沿信号传输路径传输；再加上在每个耦合回路中均设有容性耦合结构，从而在每个耦合回路中产生相位差，从而能够在每个耦合回路中产生一对零点，进而使得整个主回路至少产生两对零点，增加了零点的个数，从而能够有效的降低插入损耗，提升带外抑制，性能优良，有利于简化仿真设计，结构简单，并且利用上述耦合调节结构可方便的实现传输零点的调节。
附图说明
图1为一个实施例的滤波器的多零点实现模块包括八个谐振器的结构示意图；
图2为图1所示的滤波器的多零点实现模块的等效电路图；
图3为再一个实施例的多零点实现模块包括八个谐振器的等效电路图；
图4为再一个实施例的多零点实现模块包括八个谐振器的等效电路图；
图5为再一个实施例的多零点实现模块包括八个谐振器的等效电路图；
图6为再一个实施例的多零点实现模块包括八个谐振器的等效电路图；
图7为再一个实施例的多零点实现模块包括八个谐振器的等效电路图；
图8为再一个实施例的多零点实现模块包括八个谐振器的等效电路图；
图9为再一个实施例的多零点实现模块包括八个谐振器的等效电路图；
图10为再一个实施例的多零点实现模块包括八个谐振器的等效电路图；
图11为一个实施例的多零点实现模块包括十个谐振器的结构示意图；
图12为图11所示的多零点实现模块的等效电路图；
图13为另一个实施例的多零点实现模块包括十个谐振器的结构示意图；
图14为图13所示的滤波器的多零点实现模块的等效电路图；
图15为再一个实施例的多零点实现模块包括十个谐振器的等效电路图；
图16为再一个实施例的多零点实现模块包括十个谐振器的等效电路图；
图17为一个实施例的多零点实现模块包括十个谐振器的主回路的示意图；
图18为一个实施例的多零点实现模块包括十个谐振器的L＝0mm的拟合图；
图19为图18所示的多零点实现模块包括十个谐振器的L＝0.5mm的拟合图；
图20为图18所示的多零点实现模块包括十个谐振器的L＝1mm的拟合图；
图21为图18所示的多零点实现模块包括十个谐振器的L＝1.8mm的拟合图；
图22为图18所示的多零点实现模块包括十个谐振器的L＝2.3mm的拟合图。
附图标记说明：
10、多零点实现模块，110、第一谐振器，120、第二谐振器，130、第三谐振器，140、第四谐振器，150、第五谐振器，160、第六谐振器，170、第七谐振器，180、第八谐振器，200、第九谐振器，210、第十谐振器，220、第十一谐振器，230、第十二谐振器，240、第十三谐振器，250、第十四谐振器，260、第十五谐振器，270、第十六谐振器，280、第十七谐振器，290、第十八谐振器，300、第十九谐振器，400、第二十谐振器，1000、主回路，1100、耦合支路，1200、耦合回路，2000、耦合调节结构，2100、调节槽，3000、容性耦合结构。
具体实施方式
为使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及具体实施方式，对本发明进行进一步的详细说明。应当理解的是，此处所描述的具体实施方式仅用以解释本发明，并不限定本发明的保护范围。
需要说明的是，当元件被称为“设置于”、“固设于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当元件被称为“固设于”另一个元件，或与另一个元件“固定连接”，它们之间可以是可拆卸固定方式也可以是不可拆卸的固定方式。当一个元件被认为是“连接”、“转动连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”、“上”、“下”以及类似 的表述只是为了说明的目的，并不表示是唯一的实施方式。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于约束本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
本发明中所述“第一”、“第二”、“第三”等类似用语不代表具体的数量及顺序，仅仅是用于名称的区分。
如图1及图2、图11至图14所示，在一个实施例中，提供了一种滤波器的多零点实现模块10，包括至少八个谐振器，至少八个谐振器沿信号传输路径依次设置并形成主回路1000，且沿信号传输方向，主回路1000中不相邻的两个谐振器之间相互连接形成耦合支路1100，以使主回路1000中形成至少两个耦合回路1200，主回路1000中首、尾的两个谐振器之间设有耦合调节结构2000，且每个耦合回路1200均设有容性耦合结构3000。
上述实施例的滤波器的多零点实现模块10，至少八个谐振器沿信号传输路径依次排布从而形成主回路1000；同时，沿主回路1000的信号传输方向，将主回路1000中不相邻的两个谐振器进行连接从而能够形成耦合支路1100，利用耦合支路1100从而能够在主回路1000中形成至少两个耦合回路1200；并且，在形成主回路1000的首、尾两个谐振器之间设置耦合调节结构2000，使得首、尾两个谐振器之间耦合连接而使得主回路1000的信号能够顺畅的沿信号传输路径传输；再加上在每个耦合回路1200中均设有容性耦合结构3000，从而在每个耦合回路1200中产生相位差，从而在每个耦合回路1200中能够产生一对零点，进而使得整个主回路1000至少产生两对零点，增加了零点的个数，从而能够有效的降低插入损耗、提升带外抑制，并且有利于简化设计和产品的生产制造。
需要进行说明的是，主回路1000中的首、尾两个谐振器，是指沿主回路1000的信号传输路径，作为信号输入的谐振器为首谐振器，作为信号输出的谐振器为尾谐振器；若谐振器未参与到主回路1000的信号传输，即使该谐振器与主回路1000中的谐振器连接，该谐振器也不能认为是首谐振器和尾谐振器。例如图17所示，第九谐振器200与第二十谐振器400连接，第十八谐振器290与第十九谐振器300连接，但是由于第十九谐振器300和第二十谐振器400并未参与到主回路1000的组成，因此，第十九谐振器300和第二十谐振器400不是首、尾两个谐振器，但在本实施例中，就整个滤波器而言，其作为信号输入的输入端和作为信号输出的输出端也可以分别设置在第十九谐振器300和第二十谐振器400。
上述实施例的滤波器的多零点实现模块10，谐振器的数量至少为八个，谐振器的数量可以根据实际使用需求进行灵活的调整。
如图1至图10所示，在一个实施例中，当谐振器为八个时，设有一个耦合支路1100，以使主回路1000中形成两个耦合回路1200，八个谐振器沿信号传输路径依次设置并形成主回路1000，同时耦合支路1100的设置又可使八个谐振器能相应的形成两个耦合回路1200，以图1及图2为例，具体在本实施例中，主回路1000指的是由谐振器110、120、130、140、150、160、170、180依次沿信号传输路径连接形成的回路，第一个耦合回路1200包括四个 谐振器，第二个耦合回路1200包括六个谐振器，两个耦合回路1200共用一个容性耦合结构3000，即容性耦合结构3000设置于耦合支路1100中。如此，在每个耦合回路1200中均产生相位差，从而能够产生两对零点；进而使得包括八个谐振器的多零点实现模块10能够产生两对零点，相比传统的八个谐振器一对零点而言，多产生了一对零点，并且在实际应用时，只需设置一个容性耦合结构，并将主回路中的首、尾谐振器连接即可，结构简单，且能方便的实现传输零点的调节。
如图1及图10所示，具体地，八个谐振器分别为第一谐振器110、第二谐振器120、第三谐振器130、第四谐振器140、第五谐振器150、第六谐振器160、第七谐振器170及第八谐振器180；第三谐振器130、第四谐振器140、第五谐振器150、第六谐振器160依次设置于第一侧，第二谐振器120、第一谐振器110、第八谐振器180及第七谐振器170依次设置于与第一侧相对的第二侧，即八个谐振器中有四个谐振器依次设于第一侧，另外四个谐振器依次设于第二侧。一种可选的结构是，请一并参阅图1至图8，第一谐振器110与第四谐振器140之间可相互连接从而形成耦合支路1100，在这种情况下，第一个耦合回路1200包括第一谐振器110、第二谐振器120、第三谐振器130及第四谐振器140，第二个耦合回路1200包括第四谐振器140、第五谐振器150、第六谐振器160、第七谐振器170、第八谐振器180及第一谐振器110。另一种可选的结构是，请参阅图10，当第五谐振器150与第八谐振器180之间进行连接从而形成耦合支路1100时，第一个耦合回路1200包括第一谐振器110、第二谐振器120、第三谐振器130、第四谐振器140、第五谐振器150及第八谐振器180，第二个耦合回路1200包括第五谐振器150、第六谐振器160、第七谐振器170及第八谐振器180。如图2及图10所示，具体在本实施例中，主回路1000中的首谐振器与尾谐振器之间设有耦合调节结构2000，且仅耦合支路1100设有容性耦合结构3000。如此，可在每个耦合回路1200中均产生相位差，从而能够产生两对零点，并且在实际应用时，只需设置一个容性耦合结构3000，并将主回路1000中的首、尾谐振器连接即可，结构简单，简化仿真设计，且能方便的实现传输零点的调节。
如图3至图9所示，在一个实施例中，当谐振器为八个时，设有一个耦合支路1100以使主回路1000中形成两个耦合回路1200，八个谐振器沿信号传输路径依次设置并形成主回路1000，同时耦合支路1100的设置又可使八个谐振器能相应的形成两个耦合回路1200，第一个耦合回路1200包括四个谐振器，第二个耦合回路1200包括六个谐振器，两个耦合回路1200均单独设有一个容性耦合结构3000。即每个耦合回路1200中的容性耦合结构3000均设置于除耦合支路1100外的任意相邻的两个谐振器之间。如此，同样可以产生两对传输零点，并且结构简单，方便制作。
如图3至图9所示，具体地，八个谐振器分别为第一谐振器110、第二谐振器120、第三谐振器130、第四谐振器140、第五谐振器150、第六谐振器160、第七谐振器170及第八谐振器180，这八个谐振器沿信号传输路径依次设置并形成主回路1000；第三谐振器130、第四谐振器140、第五谐振器150、第六谐振器160依次设置于第一侧，第二谐振器120、第一谐振器110、第八谐振器180及第七谐振器170依次设置于与第一侧相对的第二侧，第一谐 振器110与第四谐振器140之间或第五谐振器150与第八谐振器180之间相互连接以形成耦合支路1100，在第一个耦合回路1200中，除耦合支路1100外的任意相邻的两个谐振器之间设有一个容性耦合结构3000，同时，在第二个耦合回路1200中，除耦合支路1100外的任意相邻的两个谐振器之间也设有一个容性耦合结构3000，即第一谐振器110至第八谐振器180中，相邻两个谐振器之间设有容性耦合结构3000。上述主回路1000中的首谐振器与尾谐振器之间还设有耦合调节结构2000。可以将第一谐振器110与第四谐振器140之间进行连接或者将第五谐振器150与第八谐振器180之间进行连接，从而形成一条耦合支路1100，进而使得主回路1000形成两个耦合回路1200。再将容性耦合结构3000设置于每个耦合回路1200中除耦合支路1100外的相邻的两个谐振器之间，从而在两个耦合回路1200中均产生相位差，从而能够在每个耦合回路1200中均产生一对零点，即两个耦合回路1200可以产生两对零点，增加了零点个数，且结构简单，简化仿真设计，并能方便的实现传输零点的调节。
需要进行说明的是，当第一谐振器110与第四谐振器140之间进行连接从而形成耦合支路1100时，第一个耦合回路1200包括第一谐振器110、第二谐振器120、第三谐振器130及第四谐振器140，第二个耦合回路1200包括第四谐振器140、第五谐振器150、第六谐振器160、第七谐振器170、第八谐振器180及第一谐振器110；从而在第一个耦合回路1200中，可以将容性耦合结构3000设置在第一谐振器110与第二谐振器120之间、或将容性耦合结构3000设置在第二谐振器120与第三谐振器130之间(如图3至图7所示)、或将容性耦合结构3000设置在第三谐振器130与第四谐振器140之间(如图8及图9所示)；同时，在第二个耦合回路1200中，可以将容性耦合结构3000设置在第四谐振器140与第五谐振器150之间(如图3及图8所示)、或将容性耦合结构3000设置在第五谐振器150与第六谐振器160之间(如图4所示)、或将容性耦合结构3000设置在第六谐振器160与第七谐振器170之间(如图5所示)、或将容性耦合结构3000设置在第七谐振器170与第八谐振器180之间(如图6所示)、或将容性耦合结构3000设置在第八谐振器180与第一谐振器110之间(如图7及图9所示)。当第五谐振器150与第八谐振器180之间进行连接从而形成耦合支路1100时，第一个耦合回路1200包括第一谐振器110、第二谐振器120、第三谐振器130、第四谐振器140、第五谐振器150及第八谐振器180，第二个耦合回路1200包括第五谐振器150、第六谐振器160、第七谐振器170及第八谐振器180。从而在第一个耦合回路1200中，可以将容性耦合结构3000设置在第一谐振器110与第二谐振器120之间、或将容性耦合结构3000设置在第二谐振器120与第三谐振器130之间、或将容性耦合结构3000设置在第三谐振器130与第四谐振器140之间、或将容性耦合结构3000设置在第四谐振器140与第五谐振器150之间、或将容性耦合结构3000设置在第八谐振器180与第一谐振器110之间；同时，在第二个耦合回路1200中，可以将容性耦合结构3000设置在第五谐振器150与第六谐振器160之间、或将容性耦合结构3000设置在第六谐振器160与第七谐振器170之间、或将容性耦合结构3000设置在第七谐振器170与第八谐振器180之间。
在一个实施例中，当谐振器为八个时，主回路1000中的首、尾两个谐振器分别位于第一侧和第二侧。如此，在主回路1000中作为信号输入的首谐振器与作为信号输出的尾谐振器分 别设置于主回路1000的两侧，从而使得首谐振器和尾谐振器的位置能够根据实际使用需求灵活的进行调节，满足使用需求。
在一个实施例中，当谐振器为八个时，主回路1000中的首、尾两个谐振器均位于第一侧；或，主回路1000中的首、尾两个谐振器均位于第二侧(如图1至图10所示)。如此，在主回路1000中作为信号输入的首谐振器与作为信号输出的尾谐振器设置于主回路1000的同一侧，只需在一块线路板等连接元件上开设相应的连接口即可同时与主回路1000的信号输入口和信号输出口进行连接，便于装配。
如图11至图16所示，在一个实施例中，当谐振器为十个时，设有两个耦合支路1100，以使主回路1000中形成三个耦合回路1200，三个耦合回路1200中有一个耦合回路由六个谐振器形成，其余两个耦合回路1200由四个谐振器形成。如此，十个谐振器沿信号传输路径依次设置并形成主回路1000，利用两个耦合支路1100从而使得主回路1000中形成三个耦合回路1200，其中一个耦合回路1200包括四个谐振器，另外一个耦合回路1200包括六个谐振器，再一个耦合回路1200包括四个谐振器。
如图11至图14所示，在一个实施例中，当谐振器为十个时，设有两个耦合支路1100以使主回路1000中形成三个所述耦合回路1200；三个耦合回路1200中有两个相邻的耦合回路1200共用一个容性耦合结构3000，且另外一个耦合回路1200单独设有一个容性耦合结构3000。如此，十个谐振器沿信号传输路径依次设置并形成主回路1000，利用两个耦合支路1100从而使得主回路1000中形成三个耦合回路1200；相邻的两个耦合回路1200共用一个容性耦合结构3000，即容性耦合结构3000设置于相邻的两个耦合回路1200的耦合支路1100中，从而在该相邻的两个耦合回路1200中均产生相位差，从而能够产生两对零点；最后一个耦合回路1200中，除耦合支路1100外的任意两个相邻的谐振器之间设有一个容性耦合结构3000，从而使得最后一个耦合回路1200产生一对零点；进而使得包括十个谐振器的多零点实现模块10能够产生三对零点，相比传统的十个谐振器两对零点而言，多产生了一对零点，增加了零点个数，且结构简单，简化仿真设计，并能方便的实现传输零点的调节。
具体地，十个谐振器分别为第九谐振器200、第十谐振器210、第十一谐振器220、第十二谐振器230、第十三谐振器240、第十四谐振器250、第十五谐振器260、第十六谐振器270、第十七谐振器280及第十八谐振器290，第十一谐振器220、第十二谐振器230、第十三谐振器240、第十四谐振器250、第十五谐振器260依次设置于第一侧，第十谐振器210、第九谐振器200、第十八谐振器290、第十七谐振器280及第十六谐振器270依次设置于与第一侧相对的第二侧，第九谐振器200与第十二谐振器230之间、第十八谐振器290与第十三谐振器240之间、及第十七谐振器280与第十四谐振器250之间的两个相互连接以形成两个耦合支路1100；两个耦合支路1100中有一个耦合支路1100中设有容性耦合结构3000，另一个耦合支路1100所在的耦合回路1200单独设有一个容性耦合结构3000。如此，第九谐振器200、第十谐振器210、第十一谐振器220、第十二谐振器230、第十三谐振器240、第十四谐振器250、第十五谐振器260、第十六谐振器270、第十七谐振器280及第十八谐振器290沿信号传输路径依次设置并形成主回路1000，其中，首谐振器与尾谐振器之间还设有耦合调节结构 2000。可以将第九谐振器200与第十二谐振器230之间进行连接以及将第十八谐振器290与第十三谐振器240之间进行连接、或者将第九谐振器200与第十二谐振器230之间进行连接以及将第十七谐振器280与第十四谐振器250之间进行连接(如图11至图14所示)、或者将第十八谐振器290与第十三谐振器240之间进行连接以及将第十七谐振器280与第十四谐振器250之间进行连接；从而能够形成两条耦合支路1100，进而使得主回路1000形成三个耦合回路1200，再将一个容性耦合结构3000设置于任意一个耦合支路1100中，从而使得该条耦合支路1100所在的两个耦合回路1200共用一个容性耦合结构3000，进而在这两个耦合回路1200中均产生一对零点，即两个耦合回路1200中产生两对零点，而另外一个耦合支路1100所在的耦合回路1200单独设有一个容性耦合结构3000，即该耦合回路1200在除耦合支路1100外的任意相邻的两个谐振器之间设有一个容性耦合结构3000，从而使得该耦合回路1200也能产生一对零点；从而使得三个耦合回路1200产生了三对零点，增加了零点个数，且结构简单，简化仿真设计，并能方便的实现传输零点的调节。
需要进行说明的是，将第九谐振器200与第十二谐振器230之间进行连接以及将第十八谐振器290与第十三谐振器240之间进行连接从而形成两个耦合支路1100时，第九谐振器200、第十谐振器210、第十一谐振器220及第十二谐振器230耦合形成一个耦合回路1200，第十二谐振器230、第十三谐振器240、第十八谐振器290及第九谐振器200耦合形成一个耦合回路1200，第十三谐振器240、第十四谐振器250、第十五谐振器260、第十六谐振器270、第十七谐振器280及第十八谐振器290耦合形成一个耦合回路1200，从而可以在第九谐振器200与第十二谐振器230之间设置一个容性耦合结构3000，再将一个容性耦合结构3000设置于第十三谐振器240与第十四谐振器250之间、或再将一个容性耦合结构3000设置于第十四谐振器250与第十五谐振器260之间、或再将一个容性耦合结构3000设置于第十五谐振器260与第十六谐振器270之间、或再将一个容性耦合结构3000设置于第十六谐振器270与第十七谐振器280之间、或再将一个容性耦合结构3000设置于第十七谐振器280与第十八谐振器290之间；或者也可以在第十八谐振器290与第十三谐振器240之间设置一个容性耦合结构3000，再将一个容性耦合结构3000设置于第九谐振器200与第十谐振器210之间、或再将一个容性耦合结构3000设置于第十谐振器210与第十一谐振器220之间、或再将一个容性耦合结构3000设置于第十一谐振器220与第十二谐振器230之间。将第九谐振器200与第十二谐振器230之间进行连接以及将第十七谐振器280与第十四谐振器250之间进行连接从而形成两个耦合支路1100时，第九谐振器200、第十谐振器210、第十一谐振器220及第十二谐振器230耦合形成一个耦合回路1200，第十二谐振器230、第十三谐振器240、第十四谐振器250、第十七谐振器280、第十八谐振器290及第九谐振器200耦合形成一个耦合回路1200，第十四谐振器250、第十五谐振器260、第十六谐振器270及第十七谐振器280耦合形成一个耦合回路1200，从而可以在第九谐振器200与第十二谐振器230之间设置一个容性耦合结构3000(如图11及图12所示)，再将一个容性耦合结构3000设置于第十四谐振器250与第十五谐振器260之间、或再将一个容性耦合结构3000设置于第十五谐振器260与第十六谐振器270之间(如图11及图12所示)、或再将一个容性耦合结构3000设置于第十六谐振 器270与第十七谐振器280之间；或者也可以在第十七谐振器280与第十四谐振器250之间设置一个容性耦合结构3000(如图13及图14所示)，再将一个容性耦合结构3000设置于第九谐振器200与第十谐振器210之间、或再将一个容性耦合结构3000设置于第十谐振器210与第十一谐振器220之间(如图13及图14所示)、或再将一个容性耦合结构3000设置于第十一谐振器220与第十二谐振器230之间。将第十八谐振器290与第十三谐振器240之间进行连接以及将第十七谐振器280与第十四谐振器250之间进行连接从而形成两个耦合支路1100时，第九谐振器200、第十谐振器210、第十一谐振器220、第十二谐振器230、第十三谐振器240及第十八谐振器290耦合形成一个耦合回路1200，第十三谐振器240、第十四谐振器250、第十七谐振器280、第十八谐振器290耦合形成一个耦合回路1200，第十四谐振器250、第十五谐振器260、第十六谐振器270及第十七谐振器280耦合形成一个耦合回路1200，从而可以在第十八谐振器290与第十三谐振器240之间设置一个容性耦合结构3000，再将一个容性耦合结构3000设置于第十四谐振器250与第十五谐振器260之间、或再将一个容性耦合结构3000设置于第十五谐振器260与第十六谐振器270之间、或再将一个容性耦合结构3000设置于第十六谐振器270与第十七谐振器280之间；或者也可以在第十七谐振器280与第十四谐振器250之间设置一个容性耦合结构3000，再将一个容性耦合结构3000设置于第九谐振器200与第十谐振器210之间、或再将一个容性耦合结构3000设置于第十谐振器210与第十一谐振器220之间、或再将一个容性耦合结构3000设置于第十一谐振器220与第十二谐振器230之间、或再将一个容性耦合结构3000设置于第十二谐振器230与第十三谐振器240之间、或再将一个容性耦合结构3000设置于第十八谐振器290与第九谐振器200之间。
如图15及图16所示，在一个实施例中，当谐振器为十个时，设有两个耦合支路1100以使主回路1000中形成三个耦合回路1200，且三个耦合回路1200均单独设有一个容性耦合结构3000。如此，十个谐振器沿信号传输路径依次设置并形成主回路1000，利用两个耦合支路1100从而使得主回路1000中形成三个耦合回路1200，每个耦合回路1200单独设有一个容性耦合结构3000，即每个耦合回路1200中的容性耦合结构3000均设置于除耦合支路1100外的任意相邻的两个谐振器之间，从而在每个耦合回路1200中均产生相位差，从而能够分别在每个耦合回路1200中产生一对零点；进而使得包括十个谐振器的多零点实现模块10能够产生三对零点，相比传统的十个谐振器两对零点而言，多产生了一对零点，增加了零点个数，且结构简单，简化仿真设计，并能方便的实现传输零点的调节。
如图15及图16所示，具体地，十个谐振器分别为第九谐振器200、第十谐振器210、第十一谐振器220、第十二谐振器230、第十三谐振器240、第十四谐振器250、第十五谐振器260、第十六谐振器270、第十七谐振器280及第十八谐振器290，第十一谐振器220、第十二谐振器230、第十三谐振器240、第十四谐振器250、第十五谐振器260依次设置于第一侧，第十谐振器210、第九谐振器200、第十八谐振器290、第十七谐振器280及第十六谐振器270依次设置于与第一侧相对的第二侧，第一谐振器110与第四谐振器140之间、第十谐振器210与第五谐振器150之间、及第九谐振器200与第六谐振器160之间的两个相互连接以形成两个耦合支路1100；在第一个耦合回路1200中，除耦合支路1100外的任意相邻的两个谐振器 之间设有一个容性耦合结构3000，同时，在第二个耦合回路1200中，除耦合支路1100外任意相邻的两个谐振器之间也设有一个容性耦合结构3000，并且，在第三个耦合回路1200中，除耦合支路1100外的任意相邻的两个谐振器之间也设有一个容性耦合结构3000。如此，第九谐振器200、第十谐振器210、第十一谐振器220、第十二谐振器230、第十三谐振器240、第十四谐振器250、第十五谐振器260、第十六谐振器270、第十七谐振器280及第十八谐振器290沿信号传输路径依次设置并形成主回路1000，其中，首谐振器与尾谐振器之间还设有耦合调节结构2000。可以将第九谐振器200与第十二谐振器230之间进行连接以及将第十八谐振器290与第十三谐振器240之间进行连接；或者将第九谐振器200与第十二谐振器230之间进行连接以及将第十七谐振器280与第十四谐振器250之间进行连接；或者将第十八谐振器290与第十三谐振器240之间进行连接以及将第十七谐振器280与第十四谐振器250之间进行连接；从而能够形成两条耦合支路1100，进而使得主回路1000形成三个耦合回路1200。再将三个容性耦合结构3000分别一一对应设置于三个耦合回路1200中除耦合支路1100外的相邻的两个谐振器之间，从而在三个耦合回路1200中均产生相位差，从而能够在每个耦合回路1200中均产生一对零点，即三个耦合回路1200可以产生三对零点，增加了零点个数，且结构简单，简化仿真设计，并能方便的实现传输零点的调节。
需要进行说明的是，将第九谐振器200与第十二谐振器230之间进行连接以及将第十八谐振器290与第十三谐振器240之间进行连接从而形成两个耦合支路1100时，第九谐振器200、第十谐振器210、第十一谐振器220及第十二谐振器230耦合形成一个耦合回路1200，第十二谐振器230、第十三谐振器240、第十八谐振器290及第九谐振器200耦合形成一个耦合回路1200，第十三谐振器240、第十四谐振器250、第十五谐振器260、第十六谐振器270、第十七谐振器280及第十八谐振器290耦合形成一个耦合回路1200，从而可以将一个容性耦合结构3000设置于第九谐振器200与第十谐振器210之间、或将一个容性耦合结构3000设置于第十谐振器210与第十一谐振器220之间、或将一个容性耦合结构3000设置于第十一谐振器220与第十二谐振器230之间；同时，将一个容性耦合结构3000设置于第十二谐振器230与第十三谐振器240之间、或将一个容性耦合结构3000设置于第十八谐振器290与第九谐振器200之间；并且，将一个容性耦合结构3000设置于第十三谐振器240与第十四谐振器250之间、或将一个容性耦合结构3000设置于第十四谐振器250与第十五谐振器260之间、或将一个容性耦合结构3000设置于第十五谐振器260与第十六谐振器270之间、或将一个容性耦合结构3000设置于第十六谐振器270与第十七谐振器280之间、或将一个容性耦合结构3000设置于第十七谐振器280与第十八谐振器290之间。将第九谐振器200与第十二谐振器230之间进行连接以及将第十七谐振器280与第十四谐振器250之间进行连接从而形成两个耦合支路1100时，第九谐振器200、第十谐振器210、第十一谐振器220及第十二谐振器230耦合形成一个耦合回路1200，第十二谐振器230、第十三谐振器240、第十四谐振器250、第十七谐振器280、第十八谐振器290及第九谐振器200耦合形成一个耦合回路1200，第十四谐振器250、第十五谐振器260、第十六谐振器270及第十七谐振器280耦合形成一个耦合回路1200，从而可以将一个容性耦合结构3000设置于第九谐振器200与第十谐振器210之间、 或将一个容性耦合结构3000设置于第十谐振器210与第十一谐振器220之间(如图15及图16所示)、或将一个容性耦合结构3000设置于第十一谐振器220与第十二谐振器230之间；同时，将一个容性耦合结构3000设置于第十二谐振器230与第十三谐振器240之间(如图15所示)、或将一个容性耦合结构3000设置于第十三谐振器240与第十四谐振器250之间、或将一个容性耦合结构3000设置于第十七谐振器280与第十八谐振器290之间、或将一个容性耦合结构3000设置于第十八谐振器290与第九谐振器200之间(如图16所示)；并且，将一个容性耦合结构3000设置于第十四谐振器250与第十五谐振器260之间、或将一个容性耦合结构3000设置于第十五谐振器260与第十六谐振器270之间(如图15及图16所示)、或将一个容性耦合结构3000设置于第十六谐振器270与第十七谐振器280之间。将第十八谐振器290与第十三谐振器240之间进行连接以及将第十七谐振器280与第十四谐振器250之间进行连接从而形成两个耦合支路1100时，第九谐振器200、第十谐振器210、第十一谐振器220、第十二谐振器230、第十三谐振器240及第十八谐振器290耦合形成一个耦合回路1200，第十三谐振器240、第十四谐振器250、第十七谐振器280、第十八谐振器290耦合形成一个耦合回路1200，第十四谐振器250、第十五谐振器260、第十六谐振器270及第十七谐振器280耦合形成一个耦合回路1200，从而可以将一个容性耦合结构3000设置于第九谐振器200与第十谐振器210之间、或将一个容性耦合结构3000设置于第十谐振器210与第十一谐振器220之间、或将一个容性耦合结构3000设置于第十一谐振器220与第十二谐振器230之间、或将一个容性耦合结构3000设置于第十二谐振器230与第十三谐振器240之间、或将一个容性耦合结构3000设置于第十八谐振器290与第九谐振器200之间；同时，将一个容性耦合结构3000设置于第十三谐振器240与第十四谐振器250之间、或将一个容性耦合结构3000设置于第十七谐振器280与第十八谐振器290之间；并且，将一个容性耦合结构3000设置于第十四谐振器250与第十五谐振器260之间、或将一个容性耦合结构3000设置于第十五谐振器260与第十六谐振器270之间、或将一个容性耦合结构3000设置于第十六谐振器270与第十七谐振器280之间。
在一个实施例中，当谐振器为十个时，主回路1000中的首、尾两个谐振器分别位于第一侧和第二侧。如此，在主回路1000中作为信号输入的首谐振器与作为信号输出的尾谐振器分别设置于主回路1000的两侧，从而使得首谐振器和尾谐振器的位置能够根据实际使用需求灵活的进行调节，满足使用需求。
在一个实施例中，当谐振器为十个时，主回路1000中的首、尾两个谐振器均位于第一侧；或，主回路1000中的首、尾两个谐振器均位于第二侧(如图11至图16所示)。如此，在主回路1000中作为信号输入的首谐振器与作为信号输出的尾谐振器设置于主回路1000的同一侧，只需在一块线路板等连接元件上开设相应的连接口即可同时与主回路1000的信号输入口和信号输出口进行连接，便于装配。
如图7、图9图16所示，在一个实施例中，耦合调节结构2000设置为交叉耦合结构，当交叉耦合结构为容性耦合时，交叉耦合结构作为所在耦合回路1200中的容性耦合结构3000。如此，交叉耦合结构为容性耦合时，可以将交叉耦合结构作为容性耦合结构3000使用， 从而只需对交叉耦合结构的容性耦合进行调节即可对耦合回路1200进行调节，相比利用耦合调节结构2000调节首、尾两个谐振器之间的感性耦合后，再利用耦合回路1200中的其他容性耦合结构3000进行调节的方式而言，对耦合回路1200的调节更加简单、方便。
上述实施例的耦合调节结构2000，可以设置为增加耦合介质的方式实现，例如可以通过调节耦合杆插入耦合孔内的深度实现耦合量的调节；也可以通过去除耦合介质的方式实现，例如可以通过开设相应尺寸的调节槽从而实现耦合量的调节，可以是现有的任意一种能够对耦合量进行调节的结构，在此不再赘述，只需满足能够对耦合量进行调节，使得主回路1000中首、尾的两个谐振器感性耦合或容性耦合即可。
如图1、图11及图13所示，在一个实施例中，耦合调节结构2000包括设置于首、尾的两个谐振器之间的调节槽2100，且调节槽2100的一端与谐振器的侧壁之间的间距(如图1、图11及图13的L所示)可调。如此，能够灵活的调节调节槽2100的一端与谐振器的侧壁之间的间距，从而调节首、尾的两个谐振器之间的耦合量。
传统的滤波器的多零点实现模块10，为了降低首、尾的两个谐振器之间的干扰，会将调节槽2100的一端与谐振器的侧壁之间的间距加工的尽可能小或者直接将首、尾的两个谐振器之间断开，如此，会增加生产难度，尤其对于介质滤波器而言，若调节槽2100的一端与谐振器的侧壁之间的间距太小，会增加烧结成型难度；同时，也使得滤波器整体易被折断，不利于产品的品质。而上述实施例的滤波器的多零点实现模块10，通过在首、尾的两个谐振器之间加设耦合调节结构2000，可以灵活的增加调节槽2100的一端与谐振器的侧壁之间的间距，即将调节槽2100的一端与谐振器的侧壁之间的间距变宽，使得首、尾的两个谐振器之间相互耦合从而使得沿信号传输路径依次设置的谐振器形成主回路1000，再通过设置耦合支路1100而在主回路1000中形成至少两个耦合回路1200，再通过灵活的设置容性耦合结构3000的位置，从而方便的实现传输零点的调节，不仅生产难度低，大大提高了生产指标余量，也增加了滤波器的整体强度，而且能够增加零点个数，从而能够有效的降低插入损耗、提升带外抑制，提升了滤波器的性能。
优选地，调节槽2100的一端与谐振器的侧壁之间的间距大于等于0.5mm。如此，能够使得节槽的一端与谐振器的侧壁之间的间距合适，降低生产难度，也避免滤波器出现折断风险，保证滤波器整体的强度。
如图18至图22所示，在一个实施例中，谐振器的数量为十个，调节槽2100的一端与谐振器的侧壁之间的间距为L，且L可以为0.5mm(如图19所示)、1mm(如图20所示)、1.8mm(如图21所示)或2.3mm(如图22所示)，相比传统的L为0mm(如图18所示)或近似于0mm的情形，滤波器的强度高，结构稳定性和可靠性较好，不易折断，也便于加工，还能够增加零点个数，提升了滤波器的性能。
上述实施例的容性耦合结构3000，可以通过设置耦合槽、耦合孔的形式实现并进行调节，可以是现有的任意一种能够对容性耦合量进行调节的结构，在此不再赘述。
在一个实施例中，还提供了一种滤波器，包括上述任一实施例的多零点实现模块10。
上述实施例的滤波器，至少八个谐振器沿信号传输路径依次排布从而形成主回路1000； 同时，沿主回路1000的信号传输方向，将主回路1000中不相邻的两个谐振器进行连接从而能够形成耦合支路1100，利用耦合支路1100从而能够在主回路1000中形成至少两个耦合回路1200；并且，在形成主回路1000的首、尾两个谐振器之间设置耦合调节结构2000，使得首、尾两个谐振器之间耦合连接而使得主回路1000的信号能够顺畅的沿信号传输路径传输；再加上在每个耦合回路1200中均设有容性耦合结构3000，从而在每个耦合回路1200中产生相位差，从而能够产生一对零点，进而使得整个主回路1000至少产生两对零点，增加了零点的个数，从而能够有效的降低插入损耗，性能优良。
在一个实施例中，滤波器为介质滤波器或金属腔体滤波器。如此，能够对各种类型的滤波器的零点个数进行相应的调节，能够有效的降低插入损耗，提升性能。同时，还能提高介质滤波器或金属腔体滤波器的整体强度，也便于生产，降低了生产难度。尤其对于介质滤波器而言，耦合调节结构2000包括设置于首、尾的两个谐振器之间的调节槽2100，调节槽2100的一端与谐振器的侧壁之间的间距较宽，降低了生产难度和加工难度，提升了整体强度。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的约束。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (13)

  1. 一种滤波器的多零点实现模块，其特征在于，包括至少八个谐振器，至少八个所述谐振器沿信号传输路径依次设置并形成主回路，且沿信号传输方向，主回路中不相邻的两个所述谐振器之间相互连接形成耦合支路，以使所述主回路中形成至少两个耦合回路，所述主回路中首、尾的两个所述谐振器之间设有耦合调节结构，且每个所述耦合回路均设有容性耦合结构。
  2. 根据权利要求1所述的滤波器的多零点实现模块，其特征在于，当所述谐振器为八个时，设有一个所述耦合支路以使所述主回路中形成两个所述耦合回路，第一个所述耦合回路包括四个所述谐振器，第二个所述耦合回路包括六个所述谐振器；两个所述耦合回路共用一个所述容性耦合结构，或两个所述耦合回路均单独设有一个所述容性耦合结构。
  3. 根据权利要求2所述的滤波器的多零点实现模块，其特征在于，八个所述谐振器分别为第一谐振器、第二谐振器、第三谐振器、第四谐振器、第五谐振器、第六谐振器、第七谐振器及第八谐振器；所述第三谐振器、所述第四谐振器、所述第五谐振器、所述第六谐振器依次设置于第一侧，所述第二谐振器、所述第一谐振器、所述第八谐振器及所述第七谐振器依次设置于与所述第一侧相对的第二侧，所述第一谐振器与所述第四谐振器之间或所述第五谐振器与所述第八谐振器之间相互连接以形成所述耦合支路；仅所述耦合支路设有所述容性耦合结构，或者，两个所述耦合回路中的所述容性耦合结构均设置在除所述耦合支路外的任意相邻的两个所述谐振器之间。
  4. 根据权利要求3所述的滤波器的多零点实现模块，其特征在于，所述主回路中的首、尾两个所述谐振器分别位于所述第一侧和所述第二侧；或，所述主回路中的首、尾两个所述谐振器均位于所述第一侧；或，所述主回路中的首、尾两个所述谐振器均位于所述第二侧。
  5. 根据权利要求1所述的滤波器的多零点实现模块，其特征在于，当所述谐振器为十个时，设有两个所述耦合支路以使所述主回路中形成三个所述耦合回路，三个所述耦合回路中有一个所述耦合回路由六个所述谐振器形成，其余两个所述耦合回路由四个所述谐振器形成。
  6. 根据权利要求1所述的滤波器的多零点实现模块，其特征在于，当所述谐振器为十个时，设有两个所述耦合支路以使所述主回路中形成三个所述耦合回路；三个所述耦合回路中有两个相邻的所述耦合回路共用一个所述容性耦合结构，且另外一个所述耦合回路单独设有一个所述容性耦合结构；或三个所述耦合回路均单独设有一个所述容性耦合结构。
  7. 根据权利要求6所述的滤波器的多零点实现模块，其特征在于，十个所述谐振器分别为第九谐振器、第十谐振器、第十一谐振器、第十二谐振器、第十三谐振器、第十四谐振器、第十五谐振器、第十六谐振器、第十七谐振器及第十八谐振器，所述第十一谐振器、第十二谐振器、所述第十三谐振器、第十四谐振器、第十五谐振器依次设置于第一侧，所述第十谐振器、所述第九谐振器、所述第十八谐振器、所述第十七谐振器及所述第十六谐振器依次设置于与所述第一侧相对的第二侧，所述第九谐振器与所述第十二谐振器、所述第十八谐振器与所述第十三谐振器、及所述第十七谐振器与所述第十四谐振器中任意两组谐振器分别相互连接以形成两个所述耦合支路；两个所述耦合支路中有一个所述耦合支路中设有所述容性耦 合结构，另一个所述耦合支路所在的所述耦合回路单独设有一个所述容性耦合结构；或者，三个所述耦合回路中的所述容性耦合结构均设置在除所述耦合支路外的任意相邻的两个谐振器之间。
  8. 根据权利要求7所述的滤波器的多零点实现模块，其特征在于，所述主回路中的首、尾两个所述谐振器分别位于所述第一侧和所述第二侧；或，所述主回路中的首、尾两个所述谐振器均位于所述第一侧；或，所述主回路中的首、尾两个所述谐振器均位于所述第二侧。
  9. 根据权利要求1至8任一项所述的滤波器的多零点实现模块，其特征在于，所述耦合调节结构设置为交叉耦合结构，当所述交叉耦合结构为容性耦合时，所述交叉耦合结构作为所述交叉耦合结构所在所述耦合回路中的所述容性耦合结构。
  10. 根据权利要求1至8任一项所述的滤波器的多零点实现模块，其特征在于，所述耦合调节结构包括设置于首、尾的两个所述谐振器之间的调节槽，且所述调节槽的一端与所述谐振器的侧壁之间的间距可调。
  11. 根据权利要求10所述的滤波器的多零点实现模块，其特征在于，所述调节槽的一端与所述谐振器的侧壁之间的间距≥0.5mm。
  12. 一种滤波器，其特征在于，包括如权利要求1至11任一项所述的多零点实现模块。
  13. 根据权利要求12所述的滤波器的多零点实现模块，其特征在于，所述滤波器为介质滤波器或金属腔体滤波器。
PCT/CN2019/105225 2019-07-05 2019-09-10 滤波器及其多零点实现模块 WO2021003836A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910605452.5 2019-07-05
CN201910605452.5A CN110364790A (zh) 2019-07-05 2019-07-05 滤波器及其多零点实现模块

Publications (1)

Publication Number Publication Date
WO2021003836A1 true WO2021003836A1 (zh) 2021-01-14

Family

ID=68218303

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/105225 WO2021003836A1 (zh) 2019-07-05 2019-09-10 滤波器及其多零点实现模块

Country Status (2)

Country Link
CN (1) CN110364790A (zh)
WO (1) WO2021003836A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111668580A (zh) * 2020-06-09 2020-09-15 江苏贝孚德通讯科技股份有限公司 具有陡峭带外抑制的介质滤波器及天线

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090072927A1 (en) * 2007-09-19 2009-03-19 Isotek Electronics Limited tuneable bandpass filter
CN201307629Y (zh) * 2008-10-27 2009-09-09 武汉凡谷电子技术股份有限公司 介质时延滤波器
CN101803108A (zh) * 2007-09-19 2010-08-11 埃瑟泰克电子有限公司 可调带通滤波器
US9425493B2 (en) * 2014-09-09 2016-08-23 Alcatel Lucent Cavity resonator filters with pedestal-based dielectric resonators
CN109461995A (zh) * 2018-12-27 2019-03-12 苏州艾福电子通讯有限公司 一种采用陶瓷介质的波导滤波器
CN109728385A (zh) * 2019-02-22 2019-05-07 江西一创新材料有限公司 一种具有对称零点特性的介质滤波器耦合结构
CN109860966A (zh) * 2019-04-15 2019-06-07 江苏贝孚德通讯科技股份有限公司 介质滤波器及5g通信设备
CN209766609U (zh) * 2019-04-09 2019-12-10 摩比科技（深圳）有限公司 介质波导滤波器的对称零点结构及其滤波器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5812036A (en) * 1995-04-28 1998-09-22 Qualcomm Incorporated Dielectric filter having intrinsic inter-resonator coupling
CN210142704U (zh) * 2019-07-05 2020-03-13 京信通信技术(广州)有限公司 滤波器及其多零点实现模块

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090072927A1 (en) * 2007-09-19 2009-03-19 Isotek Electronics Limited tuneable bandpass filter
CN101803108A (zh) * 2007-09-19 2010-08-11 埃瑟泰克电子有限公司 可调带通滤波器
CN201307629Y (zh) * 2008-10-27 2009-09-09 武汉凡谷电子技术股份有限公司 介质时延滤波器
US9425493B2 (en) * 2014-09-09 2016-08-23 Alcatel Lucent Cavity resonator filters with pedestal-based dielectric resonators
CN109461995A (zh) * 2018-12-27 2019-03-12 苏州艾福电子通讯有限公司 一种采用陶瓷介质的波导滤波器
CN109728385A (zh) * 2019-02-22 2019-05-07 江西一创新材料有限公司 一种具有对称零点特性的介质滤波器耦合结构
CN209766609U (zh) * 2019-04-09 2019-12-10 摩比科技（深圳）有限公司 介质波导滤波器的对称零点结构及其滤波器
CN109860966A (zh) * 2019-04-15 2019-06-07 江苏贝孚德通讯科技股份有限公司 介质滤波器及5g通信设备

Also Published As

Publication number Publication date
CN110364790A (zh) 2019-10-22

Similar Documents

Publication Publication Date Title
JP6676171B2 (ja) フィルタおよびワイヤレスネットワークデバイス
CN102354778B (zh) 椭圆函数型低通滤波通路及采用它的通信腔体器件
CN209691920U (zh) 腔体滤波器和用于腔体滤波器的交叉耦合结构
CN103531874B (zh) 双通带巴伦滤波器
CN206532857U (zh) 一种陶瓷波导滤波器
WO2021036944A1 (zh) 双工器、介质滤波器及其容性耦合结构
CN102509823A (zh) 双通带微带滤波器
CN102790250A (zh) 宽带多模滤波器
CN210142704U (zh) 滤波器及其多零点实现模块
CN109841933B (zh) 一种紧凑型宽带差分带通滤波器
WO2021003836A1 (zh) 滤波器及其多零点实现模块
CN105720337A (zh) 基片集成波导互补开口谐振环和带状线结构的双带滤波器
WO2021035805A1 (zh) 滤波器及其滤波回路结构
CN103972622A (zh) 一种腔体滤波器及通信射频器件
CN206422198U (zh) 一种带阻滤波器
CN210142707U (zh) 滤波器及其滤波回路结构
CN112599949B (zh) 介质滤波器及其滤波回路
CN209298314U (zh) 一种交叉耦合介质波导滤波器
CN209488536U (zh) 一种物联网双工器
CN106785273A (zh) 基于八分之一模基片集成波导的高频率选择性带通滤波器
KR101257599B1 (ko) 윈도우 구조를 가지는 알에프 신호 멀티플렉싱 장치
CN207719379U (zh) 一种介质波导滤波器负零点耦合结构
CN110896163A (zh) 可实现单个带外传输零点的介质波导滤波器
CN204947044U (zh) 微带平行耦合滤波器
CN105244575B (zh) 一种新型介质腔体滤波器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19937166

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 19937166

Country of ref document: EP

Kind code of ref document: A1