À¯ÀüÀ²Ç¥ (Permitivity)

3D field simultionÀ» ¼öÇàÇÒ ¶§ À¯Àüü(ºÎµµÃ¼)ÀÇ ÀçÁú°ªÀ» ¸ô¶ó¼­ Á¤È®ÇÑ Çؼ®ÀÌ ¾î·Á¿î °æ¿ì°¡ Á¾Á¾ ÀÖÀ» °ÍÀÌ´Ù. ±×·±µ¥ ÀÌ·¯ÇÑ À¯ÀüÀ² Á¤º¸¸¦ ¾ò±â¶õ »ý°¢º¸´Ù ½±Áö ¾Ê´Ù. ¿©±â¿¡ ¿©·¯ ¹®ÇåµéÀ» Á¾ÇÕÇÏ¿© Ưº°È÷ ÀÛ¼ºµÈ À¯ÀüüÀÇ À¯ÀüÀ²Ç¥¸¦ ÀÌ¿ëÇÏ¿© º¸´Ù Á¤È®ÇÑ ±¸Á¶Çؼ®À» ¼öÇàÇϵµ·Ï ÇÏÀÚ.

- °¢ ÀçÁú¿¡ µû¶ó ƯÁ¤¿Âµµ¿Í ÃøÁ¤ ÁÖÆļöº°·Î Á¤¸®µÇ¾ú´Ù.

- ÁÖÆļö¸¶´Ù ¾à°£ÀÇ °ªÂ÷ÀÌ°¡ ÀÖÀ¸´Ï ÃÖ´ëÇÑ Âü°íÇϵµ·Ï ÇÑ´Ù.

- ÇÑ Ä­¿¡ À§¿¡ ÀÖ´Â °ÍÀº ºñÀ¯ÀüÀ²ÀÇ ½Ç¼öºÎ(Dielectric constant), ¾Æ·¡ÂÊ¿¡ ÀÖ´Â °ÍÀº ºñÀ¯ÀüÀ²ÀÇ Çã¼öºÎÀÌ´Ù.

 

ÀçÁú¸í

ÃøÁ¤

¿Âµµ

ÃøÁ¤ ÁÖÆļö

300 Mhz

3 Ghz

10 Ghz

 FR4

 

 

4.6

0.0004

 

 Silicon

 

 

 

11.9

0.0476

 Gallium arsenide (GaAs)

22

 

 

13

0.078

 Teflon

 

2.1

0.0003

2.1

0.0003

2.08

0.0008

 Polystylene (sheet stock)

25

5.75

0.0805

 

5.51

0.085

 Polyethylene (pure)

24

 

2.25

0.0007

2.25

0.0009

 Ceramic

 

 

 5.6

0.02296

 

 Porcelain (Wet process)

25

5.75

0.0805

 

5.51

0.085

 Porcelain (Dry process)

25

5.02

0.049

 

4.74

0.074

 Pyranol 1478

26

4.5

0.17

3.8

0.88

 

 Quartz, fused

25

 

3.78

0.00023

3.78

0.0004

 Resin No. 90S

25

 

2.54

0.016

2.53

0.0145

 Rubber, pale crepe (Hevea)

25

 

2.15

0.0065

 

 Sealing wax (Red Empress)

25

 

3.09

0.038

 

 Gutta-Percha

25

2.45

0.0275

2.4

0.0145

2.38

0.012

 Lucite HM-119

23

 

2.57

0.0126

2.57

0.0082

 Mycalex 400 (mica, glass)

25

 

 

7.12

0.0235

 Neoprene compund (38% GN)

24

4.24

0.27

4

0.135

4

0.105

 Nylon 66

25

 

3.03

0.039

 

 Nylon 610

 

 

2.84

0.03408

 

 Paper (Royalgray)

25

2.75

0.18

2.7

0.15

2.62

0.105

 Paraffin 123degree ASTM

25

 

2.25

0.00045

2.24

0.0005

 Plexiglass

27

2.66

0.165

2.6

0.015

2.59

0.0175

 Amber (fossil resin)

25

2.6

0.0223

2.6

0.0234

 

 Bakelite (no filler)

24

 

3.64

0.19

3.52

0.13

 Beewax (white)

23

 

2.35

0.012

2.35

0.0113

 Carbon tetrachloride

25

2.17

0.0003

2.17

0.0008

2.17

0.0035

 Ethyl alcohol (absolute)

25

22.3

6

6.5

1.65

1.7

0.1

 Fiberglass BK 174 (laminated)

24

4.54

0.1

4.4

0.13

4.37

0.16

 Glass, phosphate (2% iron oxide)

25

5.23

0.013

5.17

0.024

5

0.021

 Glass, lead-barium

25

6.69

0.013

 

6.64

0.047

 Glass, Pyrex

 

 

4.82

0.026028

 

 Shellac, natural XL (3.5% wax)

28

 

2.86

0.073

 

 Styrofoam 103.7

25

 

1.03

0.0001

1.03

0.00015

 Sulfur, sublimed

25

 

3.62

0.00015

3.58

0.00055

 Vaseline

25

 

2.16

0.0014

2.16

0.0022

 Alumina (99.5%)

 

 

 

9.5

0.00285

 Berylla

 

 

 

6.4

0.00192

 Titiana (D-100)

 

 

 

96

0.096

 Rexolite 1422

 

 

2.54

0.001219

 

 

 <Special> Åä¾ç/ ¹°ÀÇ À¯ÀüÀ²Ç¥

ÀçÁú

ÃøÁ¤

¿Âµµ

ÃøÁ¤ ÁÖÆļö

300 Mhz

3 Ghz

10 Ghz

Sandy soil (dry)

25

2.55

0.025

2.55

0.016

2.53

0.0092

Loamy soil (dry)

25

2.47

0.016

2.44

0.0027

2.44

0.0034

Clay soil (dry)

25

2.38

0.048

2.27

0.034

2.16

0.028

Water

1.5

86.5

2.8

80.5

25

38

39

25

77.5

1.25

76.7

12

55

30

55

68

0.63

67.5

6

60

22

85

57

0.42

56.5

3.1

54

14

   << Back

Copyright by RF designhouse. All rights reserved.