Title :
A 2 GHz subharmonic sampler for signal downconversion
Author :
Parssinen, A. ; Magoon, R. ; Long, S.I.
Author_Institution :
Inst. of Radio Commun., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
Subharmonic sampling is a discrete-time alternative for the signal downconversion problem. It can be used either to replace a traditional continuous-time mixer in a superheterodyne receiver or can be combined with other discrete-time analog signal processing blocks in novel receiver architectures. We present a 2 GHz bandwidth integrated mixer based on subharmonic sampling. The sampler uses a two-diode topology with a 3 V supply. The downconversion loss for the passive sampler is 1 dB and the total system gain 3 dB. The mixer achieves IIP3 of +16 dBm and -1 dB compression +7 dBm for a single-tone input.
Keywords :
MESFET integrated circuits; MMIC mixers; UHF frequency convertors; UHF integrated circuits; UHF mixers; bridge circuits; harmonics; land mobile radio; radio receivers; signal sampling; 1 dB; 2 GHz; 3 V; 3 dB; integrated mixer; receiver architectures; signal downconversion; subharmonic sampler; superheterodyne receiver; two-diode bridge topology; Bandwidth; Baseband; Bridge circuits; Frequency conversion; Noise reduction; Pulse generation; Sampling methods; Signal processing; Signal sampling; Switches;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.602879
