论文信息 - UWB Gilbert downconverter utilising a wideband LR-CR quadrature generator

UWB Gilbert downconverter utilising a wideband LR-CR quadrature generator

An ultra-wideband (UWB) I/Q downconverter with an LR-CR quadrature generator is demonstrated using 0.35 μm SiGe HBT technology. The I/Q outputs of this generator are always in quadrature phase at any frequency while the BJT-type active mixer inherently tolerates much LO power difference for a flat gain response. Consequently, the amplitude imbalance and phase error of the I/Q outputs are less than 1 dB and 2° in the RF frequency range 3-11 GHz.

Chinchun Meng | Ya-Hui Teng | Jin-Siang Syu

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