DocumentCode
1804917
Title
RF gain control in direct conversion receivers
Author
Ryynänen, Jussi ; Kivekäs, Kalle ; Jussila, Jarkko ; Pärssinen, Aarno ; Halonen, Kari
Author_Institution
Electron. Circuit Design Lab., Helsinki Univ. of Technol., Finland
Volume
4
fYear
2002
fDate
2002
Abstract
This paper presents a study of LO self-mixing and RF gain control issues in direct conversion receivers. In cellular systems, that use continuous time frequency duplexing, these can constitute serious problems. The presented topic is of special importance when digitally programmable gain is implemented at the RF frequencies before the downconversion mixers, practically in the LNA. Furthermore, this paper gives circuit solutions to overcome this problem.
Keywords
digital control; gain control; mixers (circuits); radio receivers; LNA gain; LO self-mixing; RF gain control; cellular systems; continuous time frequency duplexing; digitally programmable gain; direct conversion receivers; low noise amplifier; Baseband; Electronic circuits; Gain control; Laboratories; Local oscillators; Mixers; RF signals; Radio frequency; Receivers; Time frequency analysis;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN
0-7803-7448-7
Type
conf
DOI
10.1109/ISCAS.2002.1010403
Filename
1010403
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