IVM06A300X200X0.4 TDK Corporation, IVM06A300X200X0.4 Datasheet - Page 6

• Manufacturer Part Number: IVM06A300X200X0.4
• Description: EMI/RFI Suppressors & Ferrites 300 X 200 X 0.4 mm
• Manufacturer: TDK Corporation

Specifications of IVM06A300X200X0.4

• Dimensions: 200 mm W x 300 mm L x 0.4 mm H
• Shielding: Shielded
• Product: Absorber Sheets & Tiles
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Example of the improved reception
of mobile phones
The data shown here are examples of in-house meas-
urement and may not coincide with performance in
other situations.
With the increased number of features in mobile
phones, their packaging density has greatly
increased. As the circuit speeds are acceler-
ated, sources of malfunctions, such as electro-
magnetic interferences between circuit units,
and deterioration of communication quality
caused by coupling, become further compli-
cated.
In particular, FPC, which connects circuit units,
tends to act as an antenna which radiates high
frequencies. FPC, which connects the color TFT
liquid crystal panels and drives of mainstream
foldable mobile phones, is designed to be con-
tained in the hinges and to be extended. This
runs the risk of emitting high-frequency elements
coupled with the visual signals (currents), and
also with neighboring circuits such as the RF
units. If radiated electromagnetic waves inter-
fere with the transmitting and receiving anten-
na, damage to communication quality (recep-
tion sensitivity) will be considerable.
The electromagnetic loss feature and magnetic
shield feature of Flexield works effectively for
these cases and improves receptive sensitivity.
Following is an example of how receptive sensi-
tivity improves when Flexield is applied to FPC
connecting the color TFT liquid crystal panels
and drives.
Putting 0.05mm IRL02
material cut in 7x 7mm
square on the driver and
only one side of the LCD's
FPC terminal resulted in
an improved receptive
sensitivity of 4.5dB.
Measurement system
Measurement environment: Fully anechoic chamber
Antenna : stored
IRL02
T : 0.05mm / 7
Transmit Loss (dB)
TDK CORPORATION
3m
Communication Analyzer
x
12mm / Putting on one side
IRL, IRJ, IVM,
IRB, IRE
FPC connects the
main LCD and LCD
drivers. For mobile
phones, this is a rather
lengthy signal line.
IRL02
T : 0.05mm
7
Putting on
one side
x
12mm
CDMA System
3.5
2.5
1.5
0.5
- 90
4
3
2
1
0
HP-8924C
5
BACK
Log-Periodic Antenna
Known antenna gain (dB)
Balun etc.
materials
Initial condition
BPF,VCO
CCD Camera
PA module
RF Circuit
Duplexer
NEXT
Isolator
Analyzer output level (dBm)
- 95
FPC
7
IRL, IRJ, IVM, IRB, IRE
LCD
4.5dB
Baseband IC
With Flexield
- 100
LCD Controller
LCD Signal Lines
- 105
6