Title :
A Δ∑ modulator based frequency hopping approach
Author :
Cathcart, Innes ; Guo, Haizheng ; Sobot, Robert ; Stapleton, Shawn
Author_Institution :
Univ. of Western Ontario, London
Abstract :
A novel approach to frequency hopping using a continuous time bandpass (CTBP) DeltaSigma modulator with fractional delay and a manchester encoder/decoder is presented. Suitability of the proposed architecture is discussed in the context of a software defined radio. A gm-C filter topology for implementing the DeltaSigma loop filter is presented, the other main system blocks are discussed as well. Mixed-signal behavioural simulations confirm the validity of the concept.
Keywords :
band-pass filters; decoding; delta-sigma modulation; encoding; frequency hop communication; software radio; DeltaSigma loop filter; continuous time bandpass DeltaSigma modulator; fractional delay; frequency hopping approach; gm-C filter topology; manchester encoder-decoder; mixed-signal behavioural simulations; software defined radio; Band pass filters; Circuits; Decoding; Delay; Frequency conversion; Frequency modulation; Pulse width modulation; RF signals; Radio frequency; Software radio;
Conference_Titel :
Circuits and Systems, 2007. MWSCAS 2007. 50th Midwest Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
978-1-4244-1175-7
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2007.4488817
