发明名称 |
PREDISTORTION LINEARIZER CIRCUIT |
摘要 |
A predistortion linearizer circuit comprising an amplitude distorting part(AM/AM) and a phase distorting part (AM/PM). At least the phase distorting part (AM/PM) comprises broadband biasing means (51) and a non-linear transmission line (L51/D51 to L55/D55) responsive to them. The biasing means(51) are arranged to bias the non-linear transmission line (L51/D51 to L55/D55) to a substantially phase distorting area. The characteristics of the circuit can be changed by adjusting a biasing voltage (VB1) or by switching some of the diodes (D54, D55) inactive by activation signals (VA1, VA2). The amplitude distorting part (AM/AM) and the phase distorting part (AM/PM) can be similar in structure, but the diodes (D51 to D55) are partly forward-biased, whereby the losses caused by them decrease the amplitude of the signal.
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申请公布号 |
CA2302256(A1) |
申请公布日期 |
1999.03.04 |
申请号 |
CA19982302256 |
申请日期 |
1998.08.24 |
申请人 |
YLINEN ELECTRONICS OY |
发明人 |
KANGASLAHTI, PEKKA;KALAJO, SAMI |
分类号 |
H03F1/32;H04B1/62;H04B3/04;(IPC1-7):H04B1/62 |
主分类号 |
H03F1/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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