Shayan Farahvash Chee Quek William Roberts David Walker Mohamed Mostafa Hauw Liem Robert Koupal A Two-port GFSK Direct Modulator for Wideband Applications at 5.8 GHz. 2128-2131 2007 conf/iscas/2007 ISCAS http://doi.ieeecomputersociety.org/10.1109/ISCAS.2007.378593 db/conf/iscas/iscas2007.html#FarahvashQRWMLK07