(参考资料)陶瓷天线布线设计
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How to Do Chip Antenna Layout Please consider the position of antenna and PCB ground layer Recommended Antenna Position – PCB Corner
Suitable
Suitable Unsuitable for radiation reason
No Ground Area
RainSun
Ground Plane
No Ground Area
RF Module
RainSun
Ground Plane RF Module
RainSun
Ground Plane
Antenna Series Layout Reference
This antenna requires a ground plane
No Ground Area
RF-i/O
RainSun
36mm 2mm
Antenna Series Layout Reference
No Ground Area
R a i n S u n RF-I/O
Ground Plane
Many freedom space
2mm
Antenna Matching Network Example
Examples-1
Antenna
RF in
C=0.5pF~3pF Examples-2
Antenna
RF in
C=1.5pF~3pF L=3nH~3.9nH
GND GND
Examples-3
Antenna
RF in
C=1.5pF~3pF
L=3nH~3.9nH GND GND
Anechoic Chamber
Radiation Pattern Measured Environment
Absorber
Horn standard Gain antenna
Antenna under
Radiation Pattern Measured
antenna under test
Horn standard Gain antenna
Turn table
PORT1 PORT2
NETWORK ANALYZER
Radiation Pattern Measured H-Plane E-Plane
Measurement
antenna under test
Testing Instrument: Anritsu 37369C VNA(Vector Network Analyzer)
VNA calibrate with 1 path reflection only
calibration sequence on test board feed point. The test board layout as recommend dimension.
Measured Antenna patterns Return loss
Smith Chart