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윤곽진동과 길이진동 공진자를 이용한 세라믹 Ladder형 필터의 특성에 관한 연구

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(2)

碩士學位論文

濟州大學校 大學院

電氣工學專攻

炯 圭

(3)

指導敎授 李

炯 圭

論文

工學 碩士學位 論文

으로

提出

2010

12

姜炯圭

工學 碩士學位 論文

認准

________________

審査委員長

________________

________________

濟州大學校 大學院

2010

12

印 印 印

(4)

(Supervised by professor Gae-Myoung Lee)

A THESIS SUBMITTED IN PARTIAL FULFILLMENT

OF THE REQUIREMENTS FOR THE DEGREE OF

MASTER OF ENGINEERING

FACULTY OF APPLIED ENERGY SYSTEM

GRADUATE SCHOOL

JEJU NATIONAL UNIVERSITY

(5)



(6)

i

-

Fig. 17 Composed by using two kinds of resonator, frequency response of A Ladder-type oeramic filter

(7)
(8)
(9)

- 



 

(10)
(11)
(12)
(13)
(14)

6

-。 。

Fig. 5 An equivalent circuit of a piezoelectric ceramic resonator in the frequency band

(15)

π (1) (2) π       π π       (3)

(16)

8 -V i n T R Z P 1 Z P 2 Z S 1 Z S2 V i n R T P1 P 2 S 1 S 2 ( b ) Z Pn ( a ) S Z n V o u t P R P n n S R P V o u t 2 D R V i n C A T V i n R T 1 C D 1 1 A B 1 2 C A 2 B ( d ) R D B ( c ) V o u t P 2 C n D n A n B n R P V o u t

Fig 6. Simplification process of an equivalent circuit of the piezoelectric ceramic ladder filter







  





⋅ 



 



 



   







 



 



 





(17)



  





⋅  

 

 

 

 



   







 



 



 



                                      

 

 

 

⋯⋯  

 

(18)

10 -   

   

     

 

  

 

(19)

       

   

     

     

 



 

  







 

 



















(20)

12

-Raw material Purity [%] Manufacturer

PbO 99.5 Hayashi Pure Chemical Industries. LTD.

TiO2 99.0 Hayashi Pure Chemical Industries. LTD.

(21)
(22)

14 -

 

 ∙ 

∙ 

 

(23)

(17)

  

 



≃  × 

 

(24)

16 -Resonator

 Ω

(25)

Resonator

3 .7 1 1 .3 1 0 .9 8 0 .3 3

4 .5 8 4 .6 2 0 .9 7 0 .8 6

Table 3 Size comparison of the substrates utilized contour extensional vibration mode and length extensional vibration mode

Resonator

[uF]

s[mm²]

t[mm]

[F/m]

35.7 4.86 0.98

 × 



 46.01 5.24 0.99

 × 



39.34 5.00 0.98

 × 



 629.1 21.21 0.35

 × 



643.7 21.07 0.35

 × 



644 21.16 0.34

 × 

 Table 4

(26)

18

-



 

 

 

 

(27)

(28)

20

-

 

 

 

 

(29)

(30)

22

-Fig. 18 composed by using two kinds of resonator, frequency response of A Ladder-type ceramic filter

(31)

(32)
(33)

수치

Fig. 5 An equivalent circuit of a piezoelectric ceramic resonator in the frequency band
Fig 6. Simplification process of an equivalent circuit of the piezoelectric ceramic ladder filter
Table 3 Size comparison of the substrates utilized contour extensional vibration mode and length extensional vibration mode
Fig. 18 composed by using two kinds of resonator, frequency response of A Ladder-type ceramic filter

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