Portable ultra wide band handheld VNA
US7019510B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2004 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Dec 14, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R35/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A handheld Vector Network Analyzer (VNA) is provided with circuitry capable of providing operation over a very wide bandwidth. The VNA includes two reflectometers, a first high frequency reflectometer (150) such as the model S331 Site Master™ and a second lower frequency reflectometer (50) such as the model S820 Site Master™, both the S331 and S820 being manufactured by Anritsu Company of Morgan Hill Calif. The high frequency reflectometer (150) includes a forward coupler (109) having a coupling path connected to a high frequency impulse signal source (102), and a through path connecting the test port (3) and incident and reflected signal measurement couplers (110,112) to a load (107). To connect the high and low frequency reflectometers (150,50), a diplexer (170) is connected between the load (107) and an output of the low frequency reflectometer (50). The diplexer (170) includes an inductor (172) for blocking high frequency signals from the low frequency reflectometer (50), and a capacitor (174) preventing a low frequency signal path through the load (107) to ground while providing an impedance matching the load (107) to high frequency signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.