... Bandwidth:f0+-50 MHZ; 4: Gain 0-2 dBi Multilayer chip antenna (MGMA5220H2450-A01): Features:1, Low return Loss and material ... loss.2, High radiation efficiency, high gain in radiation pattern;3, Multilayer monolithic structure yields high reliability;4 ... , With mark point on the products; Applications:Bluetooth module, WLAN module, 0.8GHZ-6GHZ communication system including GSM/ DCS /PCS ...