| Popis: |
This paper presents a high-dynamic range broadband transmit modulator IC. The modulator includes a Voltage to current converter, active mixer core, output current to voltage converter followed by an active differential to single ended converter. A high performance LO quadrature generator is also integrated. The modulator input bandwidth exceeds 700MHz and the RF and LO can operate from 400MHz to 6GHz. At 1GHz RF out, the modulator provides a +26dBm OIP3 with −160dBm/Hz output noise. Designed in 0.35um SiGe complementary bipolar on SOI, the 1.7mm × 1.8mm IC consumes 200mA from a 5V supply. |
