|
|
| • |
At our company we test the antenna in the customers equipment to verify it and adjust it for optimal performance.
|
| • |
Please take advantage of our wealth of experience, as we are able to make recommendations for your design to assure you good results in your application.
|
|
USB dongle
|
PC card
|
CF card
|
(note)
• After making your board, please consult us for characteristic verification and tuning.
• Please note that there may be times that we recommend making changes to your design after tuning.
|
■ PCB design example (USB dongle)
| Board dimensions: |
15mm<W<23mm, 40mm<L<80mm |
| Board thickness: |
0.8mm |
| Board material: |
FR-4 |
| |
|
(Units: mm) |
|
|
|
Fig1. Complete PCB |
Fig2. Backside GND pattern
(transparent
view
from
surface
of
board) |
Fig3.surface electric trace pattern |
|
|
|
Fig4. Surface solder resist pattern |
Fig5. Antenna placement pattern |
|
■ Important points
|
| (1) |
Figures 2 to 5 are close ups of the antenna section of figure 1. |
| (2) |
Figure 2 is a see through view of the back of the board viewed from the front of the board. |
| (3) |
Figures 2, 3 and 5 show the conductive pattern as cross hatch ( ). |
| (4) |
The signal feed line in figure 3 is 50Ω. |
| (5) |
Solder resist should be used on all areas other than the double crosshatch area ( ) as shown on the board surface in figure 4. |
| (6) |
As shown in figure 3, the antenna should be at least 1.00mm from the right edge of the board and 0.30mm from the GND pattern. |
| (7) |
No components other than the antenna should be placed in the off limit area (size: 15.00mm x 6.50mm) as shown in figure 5. |
| (8) |
The front GND pattern and back GND pattern should be connected by multiple through holes. |
| (9) |
Please consult us for design conditions not covered above. |
|
|
■ PCB
design example (PC card)
| Board dimensions: |
W=50mm, 80mm<L<130mm |
| Board thickness: |
0.8mm |
| Board material: |
FR-4 |
| |
(Units: mm) |
|
|
| Fig1. Complete PCB |
Fig2. surface electric trace pattern |
|
|
Fig3. Surface solder resist
pattern |
|
|
Fig4. Back side GND pattern (transparent
view from surface of board) |
Fig5. Antenna placement patterm |
|
Important points
|
| (1) |
Figures 2 to 5 are close ups
of the antenna section of figure
1 |
| (2) |
Figures 2, 4 and 5 show the conductive
pattern as cross hatch ( ). |
| (3) |
The signal feed line in figure
2 is 50Ω. |
| (4) |
Solder resist should be used
on all areas other than the double
crosshatch area ( ) as shown on
the board surface in figure 3. |
| (5) |
Figure 4 is a see through view
of the back of the board viewed
from the front of the board. |
| (6) |
As shown in figure 3,
antenna (1) should be at least 0.50mm from the edge of the
board and 2.00mm from the conductive pattern.
Antenna (2) should be at least 1.00mm from the edge of the
board and 0.30mm from the conductive pattern |
| (7) |
No components other than the
antenna should be placed in the
off limit area (size: 19.00mm x
6.50mm, 15.00mm x 6.50mm) as shown
in figure 5. |
| (8) |
The front GND pattern and back
GND pattern should be connected
by multiple through holes. |
| (9) |
Please consult us for design
conditions not covered above. |
|
|
■ PCB
design example (CF card)
| Board dimensions: |
W=37mm, 36mm≤L≤56mm |
| Board thickness: |
F0.8mm |
| Board material: |
FR-4 |
| |
|
(Units:
mm) |
|
|
|
Fig1.
Complete PCB |
Fig2. Back
side GND pattern
(transparent view from
surface of board) |
Fig3.
surface electric
trace
pattern |
|
|
|
|
Fig4.
Surface solder resist
pattern |
Fig5.
Anttenna placement
pattern |
■ Important points
|
| (1) |
Figures 2 to 5 are close ups of the antenna section of figure 1. |
| (2) |
Figure 2 is a see through view of the back of the board viewed from the front of the board. |
| (3) |
Figures 2, 3 and 5 show the conductive pattern as cross hatch ( ). |
| (4) |
The signal feed line in figure 3 is 50Ω. |
| (5) |
Solder resist should be used on all areas other than the double crosshatch area ( ) as shown on the board surface in figure 4. |
| (6) |
As shown in figure 3, the antenna should be at least 3.00mm from the right edge of the board and 0.30mm from the GND pattern. |
| (7) |
No components other than the antenna should be placed in the off limit area (size: 17.00mm x 6.50mm) as shown in figure 5. |
| (8) |
The front GND pattern and back GND pattern should be connected by multiple through holes. |
| (9) |
Please consult us for design conditions not covered above. |
|
|
|
|
|
