The CC3000MOD requires a 50-ohm antenna with a quarter-wavelength monopole or dipole design. A good starting point is a 31.5mm long, 1.5mm wide, and 0.5mm thick antenna with a 10mm ground plane.
To minimize power consumption, use the CC3000MOD's built-in power management features, such as the 'sleep' and 'hibernate' modes. Additionally, optimize your firmware to minimize Wi-Fi transmission and reception, and use the 'low power' mode when not transmitting or receiving data.
The CC3000MOD is rated for operation from -40°C to 85°C (-40°F to 185°F). However, it's recommended to operate within a narrower range (0°C to 70°C or 32°F to 158°F) for optimal performance and reliability.
Implement a robust Wi-Fi connection retry mechanism in your firmware, and consider using Wi-Fi channel bonding or channel hopping to mitigate interference. Additionally, ensure proper antenna design and placement to minimize multipath effects.
Follow Texas Instruments' recommended PCB layout guidelines, including keeping the Wi-Fi module away from noisy components, using a solid ground plane, and minimizing signal traces near the antenna. Also, ensure proper decoupling and filtering of power supplies.