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2500AT43A0100 Frequency tuning

This technical note is also available in PDF Format: pdf2500AT43A0100 Frequency Tuning (309k)

Abstract

  • Experiment 1:

    To shift up /down the center frequency of 2500AT43A0100 by changing the land pattern with no matching circuits (Fo @ 2.65GHz)

  • Experiment 2:

    To tune down the center frequency (to 2.5GHz) of 2500AT43A0100 soldered on the initial land pattern by matching circuits.

 

 

Experiment 1: Land Pattern Comparison

Experiment 1: Land Pattern Comparison

Experiment 1: Measured Result

Experiment 1: Measured Result

Experiment 2: Land Pattern Image

Experiment 2: Land Pattern Image

 

Experiment 2: Return Loss & Matching Circuits

Experiment 2: Return Loss & Matching Circuits

Experiment 2: Radiation Pattern @ 2.5GHz

Experiment 2: Radiation Pattern @ 2.5GHz

Summary

  • Experiment 1:

    The results show that the center frequency can be shifted up/down by about 50MHz by changing the antenna land pattern.

  • Experiment 2:

    The center frequency can also be shifted down to 2.5GHz by the matching circuit (shown as the page 5).

Note: Combining experiments 1 & 2 can give the designer the desired Fo

 
 

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