Title :
A novel, sub-harmonic pumping direct conversion receiver with high instantaneous dynamic range
Author :
Shimozawa, M. ; Kawakami, Kenji ; Itoh, K. ; Iida, A. ; Ishida, O.
Author_Institution :
Inf. Technol. R&D Center, Mitsubishi Electr. Corp., Kanagawa, Japan
Abstract :
A novel sub-harmonic pumping direct conversion receiver (SHP-DCR) employing antiparallel diode pair (APDP) is proposed for high instantaneous dynamic range receivers used in mobile communications. The proposed SHP-DCR can suppress even harmonic mixing products, such as second order intermodulation (IM2) and LO noise that interfere a desired baseband signal. Moreover, the design condition of load resistance is indicated by analytical and experimental approaches for improving diode mixer disadvantages of lower conversion gain and higher LO power. A developed L-band SHP-DCR without a low noise amplifier achieves NF of 18.5 dB, IP3 at input port of 3 dBm and IM2 is below -90 dB in the actual input range.
Keywords :
intermodulation; land mobile radio; noise; radio receivers; 18.5 dB; L-band SHP-DCR; LO noise; LO power; antiparallel diode pair; baseband signal; conversion gain; design; diode mixer; harmonic mixing products; instantaneous dynamic range; load resistance; mobile communications; second order intermodulation; sub-harmonic pumping direct conversion receiver; Baseband; Diodes; Dynamic range; Mobile communication; Noise figure; Power amplifiers; Power dividers; RF signals; Radio frequency; Radiofrequency amplifiers;
Conference_Titel :
Microwave Symposium Digest, 1996., IEEE MTT-S International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-3246-6
DOI :
10.1109/MWSYM.1996.511063
