MaxTech NXP-16 Dokumentacja Pobierz pdf (Strona 62)

LEON-G100/G200 - System Integration Manual

GSM.G1-HW-09002-C Preliminary Design-In

Page 62 of 75

Figure 41: |S

| sample measurement of a wideband antenna

2.4.2 Antenna radiation

An indication of the radiated power by the antenna can be approximated by measuring the |S

| from a target

antenna to the measurement antenna, measured with a network analyzer using a wideband antenna.

Measurements should be done at a fixed distance and orientation. Compare the results to measurements

performed on a known good antenna. Figure 42 through 45 show measurement results. A wideband log

periodic-like antenna was used, and the comparison was done with a half lambda dipole tune on 900 MHz

frequency. The measurements show both the |S

| and |S

| for penta-band internal antenna and for the

wideband antenna.

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MaxTech NXP-16 Dokumentacja Strona 62