发明名称 |
A QUADRATURE HF OSCILLATOR WITH ISOLATING AMPLIFIER |
摘要 |
Described is a quadrature HF ring oscillator (1) comprising at least two cascaded filters (2, 3) each having a filter output (O1, O2) to be coupled to a quadrature load (ZI, ZQ), each of the two filters (2, 3) comprises an isolating amplifier (T5-T8) coupled between the filter output (O1, O2) and the quadrature load (ZI, ZQ). Advantageously the isolating amplifier forms a buffer between the oscillating core of the oscillator oscillating in the GHz range and the quadrature load, so that output frequency and amplitude are less influenced by the load. |
申请公布号 |
WO0201707(A1) |
申请公布日期 |
2002.01.03 |
申请号 |
WO2001EP06961 |
申请日期 |
2001.06.19 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
VAN DER TANG, JOHAN, D.;KASPERKOVITZ, WOLFDIETRICH, G |
分类号 |
H03K3/282;H03B5/04;H03B5/12;H03B5/20;(IPC1-7):H03B5/20 |
主分类号 |
H03K3/282 |
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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