Keysight / Agilent / HP 11721A Frequency Doubler

The 11721A frequency doubler is an ideal accessory for extending the usable frequency range of signal generators, frequency synthesizers, or other signal sources. Operating on input frequencies of 50 MHz to 1300 MHz, it provides a doubled output in the range of 100 MHz to 2600 MHz. The 11721A will work well with any RF source with an output in the range 50 to 1300 MHz. The 50 ohm passive circuit of the 11721A offers low conversion loss, low spurious, and excellent flatness over its entire frequency range when operated above +10 dBm.

Features
Works with any RF source with output in the range 50 to 1300 MHz
Low conversion loss and spurious
Excellent flatness over the entire frequency range
Input: 50 to 1300 MHz
Output: 100 to 2600 MHz
Conversion Loss (+13 dBm input, 50 to 1280 MHz) <15 dB
Spurious Referenced to Desired Output Frequency f(+13 dBm input with Harmonics < -50 dBc, 50 to 1280 MHz) f/2, -15 dB; 3f/2, -15 dB
Input SWR: 1.5, typical
Input/Output Impedance: 50 ohms nominal