Datasheet

S. P. K. ELECTRONICS CO., LTD.
DRAWING：
RUF
DESIGNED BY ：
Jeffery
CHECKED BY ：
Jason
APPROVED BY ：
D.S.M
UNLESS OTHER SPECIFIED TOLERANCES ON：
TITLE:
SPK-WA-WTH43003
X＝ X.X＝ X.XX＝
Part No.
112010003
REV.：A1 UNIT：mm
Document No.
PAGE 3 of 9
Fig.1
（2）Pattern measurement：
Network Analyzer
a﹒The S.P.K.’S anechoic chamber is a far–field measurement system with size of
7m×3.3m×3.3m. The quiet zone region is 30cm x 30cm x 30cm in the center of the rotator.
Fig.2 The interior components of the anechoic chamber
Step Rotator
4.35m
b﹒The probing antenna is the BBHA 9120 LFA 700MHz ~ 6GHz module (9120D horn
antenna), which is placed in the one side of the chamber room. And the antenna under
testing (AUT) is placed in the other side of the chamber. The distance between the probing
antenna and the AUT is about 4m.
c﹒While we measure the radiation patterns by rotating AUT with 360 degrees and repeat again
by replacing the AUT with the standard gain antenna under test, we compare both data
and using a formula to obtain the gain of AUT. The standard gain antenna
is a gain horn (BBHA 9120 LFA 700MHz～6GHZ).