The Keysight 8721A is used in return-loss measurements made with a swept source such as a tracking generator and spectrum analyzer. This 50 ohm bridge (75 ohm optional) has a 6 dB insertion loss and 6 dB coupled to the auxiliary arm.
Directivity: Greater than 40 dB, (1 to 110 MHz)
Load-Port Return Loss: Greater than 30 dB
Maximum Input Power: +20 dBm
Frequency response: Plus/Minus 0.5 dB
