A6150_15 Datasheet, PDF (6/12 Pages) List of Unclassifed Manufacturers – Impexa 2.4 GHz SMD Antenna

10 Electrical interface
Impexa 2.4 GHz SMD Antenna
Part No. A6150
10-1 Transmission lines
• All transmission lines should be designed to have a characteristic impedance of 50
Ω
•
The length of the transmission lines should be kept to a
minimum
• Any other parts of the RF system like transceivers, power amplifiers, etc, should also be
designed to have an impedance of 50 Ω
Once the material for the PCB has been chosen (PCB thickness and dielectric constant), a
coplanar transmission line can easily be designed using any of the commercial software
packages for transmission line design. For the chosen PCB thickness, copper thickness and
substrate dielectric constant, the program will calculate the appropriate transmission line width
and gaps on either side of the track so the characteristic impedance of the coplanar
transmission line is 50 Ω .
10-2 Matching circuit
The antenna requires a matching circuit that must be optimized for each customer’s product.
The matching circuit will require up to three components and the following pad layout should be
designed into the device so the correct circuit can be installed.
The antenna feed pad is indicated in the drawing above. Additional pads are for mechanical
attachment only and should not be grounded.
Antennas for Wireless M2M Applications
6
Product Specification AE040034-J