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A 12 Gbps Analog QPSK baseband receiver based on Injection-locked VCO

Zhongxia He (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; Dan Kuylenstierna (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; Sz-Hau Lai (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik)
IEEE International Microwave Symposium (0149-645X). (2015)
[Konferensbidrag, refereegranskat]

Injection locking based QPSK demodulation have been reported in several publication, however the data rate is less than Gbps. In this paper, the theory of an oscillator injection locks to a wideband modulated signal is studied. Based on the principle study, a proof of concept QPSK coherent baseband receiver is designed and verified. The receiver is able to demodulator QPSK signal with data rate up to at least 12 Gbps, which is limited by the mixer bandwidth. The receiver has a power consumption of 210 mW. It consists of a novel injection-locked VCO (ILVCO) based carrier recovery block, which can be used for even higher data rates if the theoretical condition proposed in this paper is met.

Nyckelord: Injection lock, Coherent detection, QPSK, Baseband receiver, millimeter wave radio



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Denna post skapades 2015-06-23. Senast ändrad 2016-03-23.
CPL Pubid: 218748