Antennae

panStamps can be equipped with simple wire antennae, which are often the best option for enclosed circuits and space constrained applications. PCB and ceramic antennae can be adopted as well by the carrier board, and also any other kind of external aerials.

Antenna lengths

If you decide to use your panStamps with a wire stub as an antenna, you will have to use one of the following lengths, depending on your carrier frequency:

Frequency = 868 MHz

• Quarter Wavelength: 82.2 mm = 3.235 inch
• Half Wavelength: 164.3 mm = 6.470 inch

Frequency = 915 MHz:

• Quarter Wavelength: 77.9 mm = 3.069 inch
• Half Wavelength: 155.9 mm = 6.138 inch

Frequency = 433 MHz:

• Quarter Wavelength: 164.7 mm = 6.484 inch
• Half Wavelength: 329.4 mm = 12.968 inch