A dielectric filter, duplexer and communication equipment
A dielectric filter and dielectric technology, applied in the field of dielectric filters, duplexers and communication equipment, can solve the problems of high filter matching difficulty and large layout space consumption
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example 1
[0072] In this example, in order to improve the filtering effect of the broadband filtering structure 20, as Figure 4 As shown, the above-mentioned broadband filter structure 20 may include two above-mentioned first resonators, which are respectively a first-order first resonator 202a and a second-order first resonator 202b coupled to each other.
[0073] Wherein, the second-order first resonator 202b is located between the first-order first resonator 202a and the narrowband filter structure 30 , that is, the above-mentioned second filter 301 .
[0074] It should be noted that the "first order" and "second order" before the first resonator in this application do not represent the order in which the first resonator filters the signal. For example, when a signal is input by the first-order first resonator 202a, the first-order first resonator 202a performs primary filtering on the signal, and then the second-order first resonator 202b performs secondary filtering on the signal ...
example 2
[0102] In this example, the above-mentioned medium body 10 includes such as Figure 8 As shown, the first dielectric block 101 and the second dielectric block 102 are connected and have an integral structure. And a coupling adjustment structure 600 located between the first dielectric block 101 and the second dielectric block 102 .
[0103] Wherein, the above-mentioned coupling adjustment structure 600 is used to adjust the signal coupling amount between the first dielectric block 101 and the second dielectric block 102 .
[0104] In the medium body 10 such as Figure 8 As shown, in the case of oppositely disposed first side B1 and second side B2, the coupling adjustment structure 600 includes a first coupling blind hole 60 disposed on the first side B1, and a second blind hole 60 disposed on the second side B2. Coupling blind hole 61 . The walls and bottom surfaces of the first blind coupling hole 60 and the second blind coupling hole 61 are covered with the conductive lay...
example 3
[0115] In this example, if Figure 9 As mentioned above, the dielectric body 10 is still separated into the first dielectric block 101 and the second dielectric block 102 through the first coupling blind hole 60 and the second coupling blind hole 61 .
[0116] The difference from Example 2 is that the narrowband filter structure 30 includes two second resonators, such as Figure 9 As shown, the first-order second resonator 301a and the second-order second resonator 301b are respectively coupled to each other.
[0117] Wherein, the first-order second resonator 301 a and the broadband filter structure 20 are located in the first dielectric block 101 , and the first-order second resonator 301 a is located on a side of the broadband filter structure 20 close to the second dielectric block 102 .
[0118] The above-mentioned second-order second resonator 301b is located in the second dielectric block 102 .
[0119] as follows Figure 10 As shown, when the first signal hole 40 is ...
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