Phase noise of a resonant-tunneling relaxation oscillator
Phase noise of a resonant-tunneling relaxation oscillator
复制标题
谐振隧道张弛振荡器的相位噪声
DOI：
10.1063/1.121414
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
E. Brown
中科院分区：
文献类型：
--
作者：
S. Verghese;C. Parker;E. Brown
本文给出了一端短路的谐振隧穿二极管与传输线串联构成的弛张振荡器相位噪声的实验结果。与恒定波负阻振荡器不同，共振隧穿弛豫振荡器（RTRO）发射一系列尖锐的电流脉冲，这些脉冲被模式锁定到由短路传输线形成的腔的基模。研究了在注入锁定和非注入锁定条件下，弱正弦源对RTRO相位噪声的影响。对于基本注入锁定，测得注入锁定增益为51 dB。次谐波注入锁定被证明了到第12次谐波。此外，定时抖动低至200 fs的RTRO，发射1.1 GHz的重复率为1.30 ps的脉冲测量。
Experimental results are presented for the phase noise of a relaxation oscillator consisting of a resonant-tunneling diode in series connection with a transmission line, one end of which is shorted. Unlike constant-wave negative-resistance oscillators, the resonant-tunneling relaxation oscillator (RTRO) emits a sequence of sharp current pulses that are mode locked to the fundamental mode of the cavity formed by the short-circuited transmission line. The phase noise in the RTRO was investigated with and without injection locking by a weak sinusoidal source. Injection-locking gain of 51 dB was measured for fundamental injection locking. Subharmonic injection locking was demonstrated out to the 12th subharmonic. Also, timing jitter as low as 200 fs was measured for an RTRO that emitted ∼ 30 ps pulses at a repetition rate of 1.1 GHz.