TYPE
づ
実装
Dielectric Filters 面
け 用 小型誘電体フィルタ
4DFA
TYPE 4DFA (2 Pole SMD Type)
Frequency Range: 800~2500MHz
Temperature Range: − 40°C~+ 85°C
12.5
9.6
5
GND
Tolerance: ± 0.5
GND
: Depends on Center Frequency.
: 長さは周 波数に依存します。
*
*
OUT
IN
GND
7
1
(Unit: mm)
Measurement values: 4DFA-1575B-10
Characteristics 特性曲線
4DFA-1575B-10
Passband Insertion Loss
Passband Ripple
1.42dB
0.12dB
1.13
0
5
0
5
Passband V.S.W.R.
10
15
20
25
30
35
40
45
50
10
15
20
25
30
35
40
45
Attenuation
at 1540.4MHz
11.3dB
8.9dB
at 1610.4MHz
at 1435.4MHz
at 1715.4MHz
Attenuation
44.2dB
33.9dB
Return loss
50
Center Frequency: 1,575.4MHz ꢀ
ꢀ Span: 300MHz
SELECTION GUIDE FOR STANDARD DEVICES
下記の表に示す製品番号は、標準品です。TOKOは、お客
作いたしますので、お客様の用途に適合する仕様が見当らない場合は、当社営業所ま
たは代理店にご連絡ください。
様のご要望に合わせ設計、製
The Part Numbers shown in the table below are standard devices, which
are readily available. TOKO will design and manufacture modified and
custom devices with specific characteristics to meet your requirements.
If you do not find the device for your application in this catalog, please
contact our sales or representative office.
TYPE 4DFA: SMD 2 Pole Designs
東光品番
中心周波数
帯域幅
挿入損失
帯域内リップル
V.S.W.R.
選択度
応用例
TOKO
Part
Number
Center
Frequency
(MHz)
Insertion
Loss
(dB) Max.
Ripple
in BW
(dB) Max.
V.S.W.R.
in BW
Max.
Bandwidth
Selectivity
Application
(fo ± MHz)
(dB) Min. (MHz)
4DFA-836E-10
4DFA-881E-10
4DFA-964E-10
4DFA-902E-10
4DFA-947E-10
836.5
881.5
964.0
902.5
947.5
± 12.5
± 12.5
± 12.5
± 12.5
± 12.5
2.0
2.0
2.0
2.0
2.0
1.0
1.0
1.0
1.0
1.0
2.0
2.0
2.0
2.0
2.0
18 (fo ± 77.5)
18 (fo ± 77.5)
18 (fo ± 77.5)
18 (fo ± 77.5)
18 (fo ± 77.5)
AMPS
AMPS
AMPS
NMT/GSM
NMT/GSM
4DFA-866A-10
4DFA-886A-10
4DFA-931A-10
4DFA-915E-10
4DFA-1227B-10
866.0
886.0
931.0
915.0
1227.0
± 2.0
± 1.0
± 1.0
± 13.0
± 5.0
3.0
3.0
3.0
2.2
2.0
1.0
1.0
1.0
1.0
0.8
1.43
2.0
2.0
2.0
2.0
30 (fo − 105)
22 (fo ± 45)
22 (fo ± 45)
18 (fo ± 77.5)
CT2
Cordless Phone
Cordless Phone
Spread Spectrum
7, 30 (fo ± 35, ± 140) GPS
4DFA-1227B-11
4DFA-1575B-10
4DFA-1575B-12
4DFA-1575B-14
4DFA-1550L-10
1227.0
1575.4
1575.4
1575.4
1550.0
± 5.0
± 5.0
± 5.0
± 5.0
± 30.0
1.2: 0.7 Typ.
2.0: 1.4 Typ.
1.2: 0.7 Typ.
2.5: 1.8 Typ.
1.2: 0.7 Typ.
0.5
0.8
0.5
0.8
0.7
2.0
2.0
2.0
2.0
2.0
15, 20 (fo + 140, − 140)GPS
7, 30 (fo ± 35, ± 140) GPS
17, 20 (fo + 140, − 140)GPS
17 (fo ± 50)
GPS
12, 16 (fo + 150, − 150)MCSS
4DFA-1890D-10
4DFA-1903C-10
4DFA-2442P-10
4DFA-2500A-10
1890.0
1903.0
2442.0
2500.0
± 10.0
± 8.0
± 40.0
± 2.0
2.0
2.7
2.5
3.0
1.0
1.0
1.0
1.0
2.0
2.0
2.0
2.0
20 (fo ± 89) DECT
15, 27 (fo ± 50, ± 100) JDCT
15 (fo ± 250)
Spread Spectrum
18, 25 (fo ± 60, ± 90) VICS
入出力インピーダンス/Input Output impedance : 50Ω