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Datasheet

ANT-868-CW-RCL-SMA

Counterpoise

1/4-Wave monopole antennas require an associated ground plane counterpoise for proper operation. The

size and location of the ground plane relative to the antenna will affect the overall performance of the antenna

in the final design. When used in conjunction with a ground plane smaller than that used to tune the antenna,

the center frequency typically will shift higher in frequency and the bandwidth will decrease. The proximity of

other circuit elements and packaging near the antenna will also affect the final performance.

For further discussion and guidance on the importance of the ground plane counterpoise, please refer to Linx

Application Note, AN-00501: Understanding Antenna Specifications and Operation.

Antenna Orientation

The ANT-868-CW-RCL is characterized on the edge of a 102 mm x 102 mm ground plane as shown in

Figure 2. This orientation, represents the most common orientation in end-product use.

Figure 2. ANT-868-CW-RCL on Evaluation PCB