Radio frequency power meter
US7966140B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Apr 18, 2008 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Jan 17, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R21/07
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An in-line directional radio-frequency (“RF”) power meter for measuring power and other parameters in a transmission line. The meter simultaneously measures complex voltage-waves traveling in the forward and reverse directions of a connected transmission line and processes measured voltages to compute forward and reverse power, standing wave ratio, and impedance values. The apparatus includes a microprocessor having microcode for digitally computing RF power parameters, and a field programmable gate array (“FPGA”) having microcode for executing complex Fast Fourier Transforms (“FFT”) to calculate voltages and frequencies, a microprocessor with attached firmware to make a series of complex calculations relative to sensed electrical values in the transmission line and to pass certain calculated values to the device to communicate RF power parameters to a user. The configuration of the apparatus allows for measurement of RF power parameters in a relatively economical package.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.