Radial Type Helical Filters
ラジアルタイプヘリカルフィルタ
7HW
7HT
TYPE
7HW Double Tuned
7HT Triple Tuned
Frequency Range:
350MHz~1.2GHz
RoHS compliant
7HW
8Max. 1Max.
*
14.7Max. 3.7
φ0.5
0.5
1
3.2
15.2Max.
4.5
22.5Max.
4.5
7HT
8Max. 1Max.
0.5
*
14.7Max.
3.7
φ0.5
3.2
4.5
14.6
4.5
11.8
7.3
φ3.5
φ3.5
1
(Unit: mm)
1
4.5
高さ11mm、12.9mmも可½です
*
Either 11 or 12.9mm height is possible.
Features
•
Compact low-profile helicalfolters, ideal for mobile
communications equipment.
•
RoHS compliant
Examples of 900MHz frequency response
900MHz周波数感度例
252HXPK-2709F
Test circuit
4 5
1 8
R
1
R
2
(Unit: mm)
特 長
•
移動½通信に最適な小型薄½のヘルカルフィルタ
•
RoHS 指令対応
Typical characteristic for MCA radio use
MCAラジオ用代表特性曲線
302HXPK-1278B
Test circuit
R
1
=R
2
=50Ω
R
1
2
1
7
11 10 8
R
2
ANTENNA CIRCUIT FILTER 302MXPR-1077E
R
1
=R
2
=50Ω
Attenuation(dB)
BANDWIDTH
0
0
SELECTIVITY
Attenuation(dB)
BOTTOM VIEW
BANDWIDTH
0
0
4
20
BANDWIDTH
8
fo : 855MHz
IL : 1.5dB
−20
−10
0
10
20
40
2
2
12
60
Attenuation(dB)
−200
−100
0
100
Attenuation(dB)
Frequency(MHz)
4
Frequency(MHz)
4
fo:904MHz
IL:1dB
6
6
RF CIRCUIT FILTER 252HXPK-2674F
8
fo:904MHz
IL:2.5dB
8
−20
−10
0
10
20
10
BANDWIDTH
0
0
SELECTIVITY
Attenuation(dB)
Frequency(MHz)
Frequency(MHz)
SELECTIVITY
0
0
Attenuation(dB)
−20
−10
0
10
20
2
20
SELECTIVITY
4
fo : 859.5MHz
IL : 2.5dB
6
−20
−10
0
10
20
40
Attenuation(dB)
10
20
60
−120
−60
0
60
120
Attenuation(dB)
Frequency(MHz)
40
Frequency(MHz)
20
(dB)
0
30
10
20
−100
−50
0
50
100
Return Loss
60
LOCAL FILTER 252HXPK-273F
80
BANDWIDTH
100
0
−200
−100
0
100
200
0
SELECTIVITY
Attenuation(dB)
Frequency(MHz)
Frequency(MHz)
Attenuation(dB)
2
20
4
fo : 910MHz
IL : 1.2dB
6
−20
−10
0
10
20
40
60
−400
−200
0
200
400
Frequency(MHz)
Frequency(MHz)
continued on next page
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4.5
18.9
200
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