发明名称 |
FREQUENCY-SCALABLE SHOCKLINE-BASED VNA |
摘要 |
A high-frequency VNA system is provided using non-linear transmission line (NLTL or shockline) based samplers configured to provide scalable operation characteristics. Scaling to adjust noise performance vs. frequency is accomplished as follows: (1) increasing or decreasing the fall time of a shockline's output voltage waveform. This is accomplished by changing the number of Schottky varactors in a shockline, as well as changing the shockline's Bragg cutoff frequency by setting the spacing between Schottky varactors; (2) changing the structure of the pulse-forming network connected with the sampler by changing the length of the differentiator arms in the sampler pulse-forming network; and (3) changing the LO signal frequency applied to the shockline. Multiple NLTL based samplers are multiplexed to form a broadband reflectometer with the multiplexing circuitry selectively connecting one of the NLTL based sampler segments at a time to allow user selection of a desired performance vs. frequency response for each segment. |
申请公布号 |
US2011306314(A1) |
申请公布日期 |
2011.12.15 |
申请号 |
US20100813337 |
申请日期 |
2010.06.10 |
申请人 |
NOUJEIM KARAM MICHAEL;MARTENS JON S.;ANRITSU COMPANY |
发明人 |
NOUJEIM KARAM MICHAEL;MARTENS JON S. |
分类号 |
H04B17/00 |
主分类号 |
H04B17/00 |
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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