Impedance Matching Problem

[Alfred123]

Hi everyone, need help here. I have designed a dual-band microstrip patch antenna for LTE and WiFi applications. The antenna operate at 2.6GHz for LTE and 5.0GHz for WiFi. I have started to design this dual-band antenna by designing the 5.0GHz WiFi antenna then introduce 2 inverted U slots to generate the resonant 2.6GHz. I cannot achieve impedance matching for the 2.6GHz LTE antenna. Please help and advice.

 

[aap2]

Impedance matching is used for eliminating power loss as the signal jumps from one circuit to the next. This is usually done by constructing RLC circuits with possibly a transformer. However, I think you might be having a problem with the difference between LTE and WiFi which I would guess is in the sidebands.