ANT-XXX-CHP-X Datasheet, PDF (2/7 Pages) List of Unclassifed Manufacturers – ULTRA COMPACT CHIP ANTENNA

SPECIFICATIONS
Dimensions (mm)
Operating/Storage Temp
Construction
PHYSICAL SPECIFICATIONS
2.45GHz
868MHz
6.5(L) x 2.2(W) x 1.0(H) 16.0(L) x 3.0(W) x 1.7(H)
-40 ~ +85°C
-40 ~ +85°C
LTCC
LTCC
916MHz
16.0(L) x 3.0(W) x 1.7(H)
-40 ~ +85°C
LTCC
Center Frequency
Bandwidth
Wavelength
Pattern
Polarization
VSWR
Maximum Gain
Impedance
Power Handling
ELECTRICAL PERFORMANCE
2.45GHz
868MHz
180MHz
1/4-wave
10MHz
1/4-wave
Omni-directional
Omni-directional
Linear
Linear
<2.0 (Max.)
+0.5dBi
<2.0 (Max.)
+0.5dBi
50Ω
50Ω
3W (Max.)
3W (Max.)
916MHz
10MHz
1/4-wave
Omni-directional
Linear
<2.0 (Max.)
+0.5dBi
50Ω
3W (Max.)
2.4GHz FOOTPRINT
0.260"
868 & 916MHz FOOTPRINT
0.630"
0.100"
0.130"
0.040"
0.040"
PIN CONFIGURATION
1
2 2.4
Pin Number
1
2
Pin Description
Feed Termination
This pin connects to the transmitter or receiver
Solder Termination
This pin is soldered down for physical support only. There is no
electrical connection
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THEORY OF OPERATION
The CHP Series antennas utilize Low Temperature Cofired Ceramic (LTCC)
technology to embed the antenna element into a ceramic substrate. Advances in
this technology have resulted in materials that are extremely stable over time
and temperature, producing an antenna that is highly reliable across a wide
range of applications. The high-frequency characteristics of this technology
enable exceptional performance in a very small package. The construction
techniques for LTCC devices lends itself well to favorable pricing in high volume.
LAYOUT CONSIDERATIONS
Proper layout is vital to ensure correct operation and optimum performance.
Improper placement of planes, traces, or system components will result in nulls
or complete de-tuning. Ideally, the antenna will be mounted on the board in such
a way as to allow an unobstructed field of view. The area underneath the
antenna must be free of components, traces, and planes. Components may be
placed to the rear of the antenna in the ground plane counterpoise area. The
feed trace from the RF stage to the antenna must be a microstrip trace or coax
transmission line and should be kept as short as practical.
The layout of our reference jigs is illustrated on the following pages. While they
demonstrate various aspects of a layout, it is not necessary to replicate them
exactly. While your board size and layout may differ, it is important to recognize
that the counterpoise plays an important role in resonance and stability since it
acts, in essence, as part of the antenna. After your own layout is complete, the
performance of the antenna in your specific product should be carefully checked
using tools like a network analyzer. In some cases, the size of the product’s PCB,
proximity of the case, or other factors may make a custom version of the antenna
necessary. Contact Antenna Factor for more information.
No electrical connection.
For physical support only
No ground plane or traces
under the antenna
PCB pads for the CHP
Ground plane on bottom
layer for counterpoise
50-ohm microstrip line
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