Datasheet

APPLICATION SPECIFICATION
REVISION: ECR/ECN INFORMATION: TITLE:
868, 915 MHz ISM Standalone Antenna
Application Specification
SHEET No.
A
EC No:
ABU2013-0068
2 of 3
DATE:
17 May 2013
DOCUMENT NUMBER: CREATED / REVISED BY: CHECKED BY: APPROVED BY:
AS
-
105262
-
0
001
Ryan Liu Ethan Zhong Welson Tan
TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).DOC
6. Application Instructions
6.1. Assembly Instructions
6.1.1. The device radio must be 50ohm matched.
6.1.2. The insertion loss from the power amplifier to the connector on the PCB board must be low or
else any loss will affect the overall antenna efficiency.
6.1.3. Although this antenna is balance feed structure and facilitates low ground plane dependence,
the distance from the antenna to the PCB will still affect the antenna radiation pattern and reduce
the efficiency. It is recommended to paste the flex portion of the antenna at least 5mm away from
the system board.
6.1.4. Mounting the antenna flex perpendicular to the system board will give the best radiation pattern.
6.1.5. Choose the approximate length of the cable for your solution as the longer the cable, the higher
is the insertion loss.
6.1.6. During assembly, if the cable is being assembly closed to the flex of the antenna, it will affect
the antenna radiation and the efficiency will be degraded.
Recommended assembly method
Cable close to antenna to flex of antenna