A BPSK Demodulator Circuit using an Anti-Parallel Synchronization Loop

Zheng, You; Saavedra, Carlos E.

doi:10.1109/iscas.2005.1465865

Cited by 2 publications

(2 citation statements)

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“…There is 180° phase difference between the two phase-locked loops, and thus the name "anti-parallel" dual loop. In one of our previous works [8] we demonstrated a proto-type of this circuit using low-frequency (i. e., baseband) packaged components. In this paper, we describe the unique monolithic implementation of the circuit at a microwave carrier frequency of 2.7 GHz.…”

Section: Mmic Coherent Bpsk Demodulatormentioning

confidence: 99%

“…Generating these opposite signals requires a voltage difference between the two inputs to the comparator from the dual loop. As described in [8], two identical DC offset voltages V dc are introduced to the phase detectors (by using two voltage summers after the multipliers) to differentiate their two outputs. In this manner, when the locking loop is locked, its multiplier's output (IF) has to be -V dc , in order to cancel the introduced offset voltage V dc at the summer.…”

Section: Mmic Coherent Bpsk Demodulatormentioning

confidence: 99%

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Coherent BPSK Demodulator MMIC Using an Anti-Parallel Synchronization Loop

Zheng

Saavedra

2007

2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium

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A coherent BPSK demodulator using an antiparallel synchronization loop is successfully implemented in a 0.18 µm CMOS monolithic-microwave-integrated-circuit (MMIC). Due to the novel concept of the anti-parallel synchronization method, the demodulator only requires a differential VCO as opposed to a quadrature VCO as in the Costas Loop, thereby saving considerable chip space. The fabricated demodulator works at a carrier frequency of 2.7GHz and has been tested at data rates of up to 7Mbps. The circuit measures 1.0 mm 2 including the bonding pads and consumes 151 mW of power.

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Section: Mmic Coherent Bpsk Demodulatormentioning

confidence: 99%

Section: Mmic Coherent Bpsk Demodulatormentioning

confidence: 99%