Linearization of BJTs with logarithmic predistortion
Linearization of BJTs with logarithmic predistortion
manuscript_1570495472.pdf
(Tampere University - Trepo)
This paper proposes a novel linearization technique for bipolar junction transistors (BJT) and their derivatives, e.g., heterojunction BJTs. Since the non-linearity of BJTs is exponential by nature, analog predistortion caused by a logarithmic amplifier should linearize the response completely, in theory. This paper reports that, in practice, cascading a logarithmic amplifier in front of a simple one-transistor BJT amplifier boosted its output third-order inter-modulation intercept point (OIP3) by 10 dB. The proposed linearization scheme is extremely simple and it is inherently broadbanded. To the best of our knowledge, this idea has not been reported previously.
Saved in:
Physical Description |
319085 |
---|---|
Language |
English |
Series | IEEE Radio and Wireless Symposium, RWS |
Subjects |
213 Electronic, automation and communications engineering, electronics
213 Electronic, automation and communications engineering, electronicsSearch as topicSearch in all fields |
ISBN |
9781538659441 |
Contained in |