Datasheet

APPLICATION SPECIFICATION
REVISION:
ECR/ECN INFORMATION:
TITLE:
ISM 868/915MHz Ceramic Antenna
Application Specification
SHEET No.
B
EC No:
14 of 19
DATE:
2018/10/09
DOCUMENT NUMBER:
CREATED / REVISED BY:
CHECKED BY:
APPROVED BY:
2081420001
Liu Hai 2018/10/09
Cheng Kang 2018/10/09
Chris Zhong 2018/10/09
TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).DOC
7.2 ANTENNA RF PERFORMANCE AS A FUNCTION OF DIFFERENT LOCATIONS WITH
VERTICAL PLANE GROUND
Four locations with vertical plane ground have been evaluated and these locations are shown in
figure 7.2. The plane ground size is 90mm*90mm and we move the plane ground to four locations
for each test. The distance between antenna and vertical plane ground affect the antenna
performance slightly. We still suggest the minimum distance between antenna and plane ground is
recommended to be 20mm.
FIGURE 7.2 FOUR LOCATIONS WITH VERTICAL PLANE GROUND
Ground Size: 90mm*90mm;
Location 1: Distance between antenna and plane ground is about 5mm;
Location 2: Distance between antenna and plane ground is about 10mm;
Location 3: Distance between antenna and plane ground is about 15mm;
Location 4: Distance between antenna and plane ground is about 20mm.