Title :
Switching-mode mixers based on tunable filters
Author :
Scheele, P. ; Kilian, A. ; Giere, A. ; Jakoby, R.
Author_Institution :
Inst. fur Hochfrequenztech., Tech. Univ. Darmstadt
Abstract :
A novel mixing principle based on the modulation of the transfer function of tunable filters has been implemented at 1.95 GHz. The varactor based filters used as single pole double throw (SPDT) switches offer switching contrasts of more than 30 dB. In combination with a phase shifter in one filter´s output path and a power combiner, a switching-mode mixer has been realised
Keywords :
filters; mixers (circuits); modulation; phase shifters; power combiners; switches; switching circuits; transfer functions; varactors; 1.95 GHz; phase shifter; power combiner; single pole double throw switches; switching-mode mixers; transfer function modulation; tunable filters; varactor based filters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20062483
