Lit Number 11-03-21-004
Page (1)
LF Antenna Design Guide
J.A.Goulbourne
Abstract
This document describes how to design and develop custom antennas suitable
for attaching to Texas Instruments’ Low Frequency (LF) Radio Frequency (RF)
modules and readers. It looks at the matching circuits of the standard RFMs
and details the antenna requirements for each one.
The issues of reader inductance and Q are examined, together with wire
selection, tail construction and the use of external capacitance in bringing an
antenna to resonance.
Summary of Contents for 2000 LF Series
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