CRS03TQFREQFS1E [TEMEX]

Ceramic Resonator, 1500MHz Min, 3000MHz Max;


型号：	CRS03TQFREQFS1E
厂家：	TEMEX
描述：	Ceramic Resonator, 1500MHz Min, 3000MHz Max 晶体谐振器
文件：	总6页 (文件大小：66K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

CERAMIC COAXIAL RESONATORS

Contents

CERAMIC COAXIAL RESONATORS

CONTENTS

PAGE

GENERAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

HOW TO ORDER? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

APPLICATION NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

MAIN FEATURES

Frequency:

Size:

300 MHz to 6 GHz

2 to 12 m m

Dielectric constant:

ε21, ε37, ε90

QUARTER WAVELENGTH

OR HALF WAVELENGTH

WITH OR WITHOUT CONNECTION

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CERAMIC COAXIAL RESONATORS

General characteristics

GENERAL CHARACTERISTICS

DIMENS IONS AND CONFIGURATIONS

The TEMEX coaxial resonators are available over a frequency range of 300 MHz to 6 GHz with four

preferred square cross section sizes, having side length of 2, 4, 6 and 12 m m .

Other square section dim ensions 3, 8 and 10 m m (S) inform ation can be obtained upon request.

Table 1 sum m arizes the choice of sizes and dielectric m aterials available.

The length of the com ponent (L) can be determ ined from the chosen frequency (F) and dielectric

constant (εr) as follows:

(λ/4 application)

(λ/2 application)

λo

L =

λo

L =

λo in m m

L in m m

F in GHz

4 √ εr

2 √ εr

300

with λo =

A sim pliﬁed form ula for λ /4 applications:

16.37

εr = 21

εr = 37

εr = 90

L =

12.3

7. 9

IMP EDANCE Z

The coaxial resonator im pedance used in TEM m ode is a direct function of its dim ensions

and of the dielectric m aterial perm ittivity.

Table 2 indicates for each standard side length, and for each dielectric constant, the im pedance value,

independent of the resonator length

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CERAMIC COAXIAL RESONATORS

General characteristics

AP P LICATIONS

TEMEX coaxial ceram ic resonators provide the users with “High Q” higher parallel resonant

im pedance and better tem perature characteristics than inductor coils and associated lum ped constant

elem ents used in RF am pliﬁers and oscillators circuits.

These coaxial resonators are perfectly suitable for:

• DRO/VCO oscillators

• Cellular telephone

• UHF (LC) coupled am pliﬁers

• Global Positioning System s (GPS)

• Cordless telephone

•Tuned oscillators

• Narrow band ﬁlters

• Duplexers

Table 1: Dim ensions

Section S

(m m )

Hole d

(m m )

2.0

3.0

4.0

± 0.2

1.5

4.0

± 0.2

2.0

6.0

± 0.2

2.0

6.0

± 0.2

2.5

8.0

± 0.2

2.7

10.0

± 0.2

3.3

12.0

± 0.2

3.55

12.0

± 0.2

4.0

± 0.2

0.65

± 0.1

± 0.2

0.95

± 0.1

± 0.2

± 0.5

TEMEX Ref.

CRS02 CRS03 CRS04 CRS24 CRS06 CRS26 CRS08 CRS10 CRS12 CRS412

Note: (λ/4 application): all faces but (1) are m etallized

(λ/2 application): all faces but (1) and (2) are m etallized

Section

(m m )

L1 (m m )

L2 (m m )

e (m m )

0.5

1.0

0.5

0.8

1.2

0.5

0.8

1.3

0.5

1.5

1.7

0.5

1.5

2.0

0.7

2.0

2.5

1.0

L1 L2

Table 2: Im pedance

Table 3: General characteristics

Standard

S = 2, 3, 4, 6, 8, 12mm

Cross section square

TEMEX Ref.

εr =21 εr = 37 εr = 90

Dielectric constant

εr

τf

21 ± 2 37 ± 1 90 ± 2

CRS02

CRS03

CRS04

CRS24

CRS06

CRS26

CRS08

CRS10

CRS12

CRS412

16.5

16.0

14.0

10.0

15.5

12.5

15.0

15.5

17.0

15.5

12.5

12.0

10.5

7.5

11.5

9.5

11.5

12.5

11.5

8.0

7.5

6.5

5.0

7.5

6.0

7.0

7.5

8.0

7.5

Tem perature coefficient

of the dielectric

(Standard values)

21: 5 ± 5 ppm

37: 0 ± 3 ppm

90: 0 ± 10 ppm

Resonant freq. range

See tables

Standard: ± 1 % (F)

± 0.5 % (D) and other

on request

Frequency tolerance

Quality factor

See curves

Im pedance

See table 2

Metallization

Standard: Silver

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CERAMIC COAXIAL RESONATORS

How to order?

Table 4: Standard frequency range λ/ 4 in MHz

2 m m

3 m m

4 m m

6 m m

12 m m

ε21

ε37

ε90

2000 - 4000 1500 - 4000

1000 - 4000

800 - 3000

450 - 2000

600 - 2500

500 - 2000

450 - 1000

600 - 1250

450 - 1000

300 - 650

1500 - 3000

900 - 2000

1500 - 3000

650 - 2000

For special request, please consult your local Sales Office.

HOW TO ORDER?

1500

Coaxial

Resonator S: Square

Shape

Size

m m

Material Application Resonant Frequency Metallization Connection Tape

N: εr = 90

T: εr = 37

V: εr = 21

Q: λ / 4

H: λ / 2

frequency tolerance

S: silver

1: one

0: none

X: special

reel

(MHz)

F = ± 1 %

D = ± 0.5 %

5 = ± 5 MHz

1 = ± 1 MHz

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CERAMIC COAXIAL RESONATORS

Application notes

APPLICATION NOTES

S OLDERING RECOMMENDATIONS

Before any soldering operation is im plem ented, the coaxial resonator m ust be preheated in order

to avoid a therm al shock and a subsequent m echanical stress liable to initiate failure m echanism .

TEMEX recom m ends a m inim um preheating tim e of 2 m inutes at 120° C with a m axim um heating rate

of 2° C / sec.

FREQUENCY ADJ USTMENT

When the frequency tuning adjustm ent is needed, two solutions can be adopted:

Mechanical lapping of the ceram ic, or m echanical grinding of m etallization, depending where

m etallization will be grinded off.

b) Using a TEMEX air or sapphire dielectric tuning capacitor (“Air trim m er” or“Gigatrim ”):

in this case, the frequency will decrease when capacitance will increase.

This provides an additional advantage of m ounting / term inating resonator to the assem bly

by utilizing the leg conﬁguration of the tuning capacitor.

QUALITY FACTOR Q

The Q factor of a coaxial resonator is essentially determ ined by the m etallization.

The dielectric m aterial, having low losses, does not have a direct effect on the “Q” (secondary

inﬂuence).

The curves show the range of “Q” factor versus resonator size and frequency range.

Curves show that Q m in. increases as frequency increases (proportionally to Fo).

√

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CERAMIC COAXIAL RESONATORS

Application notes

Dielectric Constant = 21

2 500

2 000

1 500

1 000

500

12x12

6x6

4x4

3x3

2x2

500

1 000

1 500

2 000

2 500 3 000

Frequency (MHz)

Dielectric Constant = 37

1 800

1 600

1 400

1 200

1 000

800

12x12

6x6

4x4

3x3

600

400

200

2x2

500

1 000 1 500

2 000 2 500 3 000

Frequency (MHz)

Dielectric Constant = 90

1 600

1 400

1 200

1 000

800

12x12

6x6

600

4x4

3x3

400

200

2x2

500

1 000

1 500

2 000

2 500

3 000

Frequency (MHz)

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