SPE-15-8-009/B/WY

Page 2 of 17

1. Introduction

The SWLP.2450.10.4.A.02 patent pending 10mm SMT ceramic patch antenna is a

breakthrough antenna in terms of size and performance. The smallest 2.4GHz patch

available worldwide, it is ideally suited for 2.4 GHz applications such as Bluetooth LE,

Wi-Fi, ISM, and ZigBee. It was developed specifically for Bluetooth LE wearable

applications to work directly on ground (except for feed area) and over metal, device

environments which traditional chip antennas cannot operate in. The antenna also

does not need ground plane clearance around it (except for feed area). It provides

omni-directional coverage similar to chip antennas on small boards.

The antenna exhibits 24.8% efficiency on a 12*16mm ground plane at 2455 MHz. If

utilized on a 50*50 ground plane, efficiency will improve to 40% at 2455MHz.

Typical applications are:

* Wearables

* Tablets

* Hand-held devices

* USB dongles

* Smart home applications

The SWLP.2450.10.4.A.02 can be placed in any position on the device ground plane.

Like all small antennas, frequency detuning or efficiency change can occur due to

surrounding components and enclosure housing. Larger ground-planes increase peak

gain and efficiency. Taoglas helps customers fine tune the antenna for optimal

performance through matching, correct board layout, transmission line design, and if

necessary, custom antenna tuning for a MOQ.

Many module manufacturers specify peak gain limits for any antennas that are to be

connected to that module. Those peak gain limits are based on free-space conditions.