Novel frequency quadrupler design covering the entire V-Band in 0.13-μm SiGe process

This paper presents a novel quadrupler design that adopts the proposed polyphase filter based doubler as the first stage, which generates a differential output signal for the second doubler stage. The polyphase filter based solution features a compact size, a wide bandwidth and a well balanced output. The quadrupler is implemented in a 0.13 μm SiGe:C HBT process, and demonstrates a wide bandwidth of 50 - 75 GHz with only 1.8 dB gain variation, a conversion gain of 12 dB, and a output power of about -1 dBm.