I have a GPS receiver(works at 1575.42 MHz) with chip-antenna:
As I understand, this metal square plate is an antenna which is connected to PCB with short 5-6mm metal rod. This metal rod is hidden iside the black ceramic enclosure seen on the image. However, if I read abount antenna basics, then antenna lenght should be 1/2 or 1/4 of the signal wavelenght, i.e. 9.5cm or 5cm respectively because wavelenght in case of 1.5GHz is 0.19m. How does this square metal plate work as an antenna?