This work presents a 28 GHz reflection type transmission-line (TL) based phase shifter. The proposed architecture employs a completely passive approach to double the phase shift achievable using a TL when compared to conventional architectures. The phase shifter, along with a preceding low noise amplifier and buffer, is implemented in a 65 nm CMOS process.The fabricated chip achieves a measured phase resolution of 11.25 degree at 28 GHz, with an rms error of 3 degree and a total phase shift of 180 degree. The insertion loss of the phase shifter alone is 17 dB.The active area of the entire phase shifter, including LNA and buffer is 0.41 mm^2