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Vehicular Impact Signaling Device
An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.
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| Number | Title | Issue Date |
| 7372373 | Embedded antenna and filter apparatus and methodology Apparatus and methodology are disclosed for providing effective transmission of data to and/or from an electricity meter by providing embedded radio frequency components. An antenna and stripline or microline filter arrangement are provided as embedded components in... | 05/13/2008 |
| 6759854 | Test apparatus for testing devices under test and method for transmitting a test signal A test apparatus comprises an input for receiving a test signal from a test signal source, wherein a signal line with a predefined characteristic wave impedance can be connected to the input. The test apparatus further comprises branching means with a first and a pl... | 07/06/2004 |
| 5625293 | Determination of the watercut of a multiphase flow directly from measured microwave frequency dielectric properties The watercut of fluid in a mulitphase flow is measured. Microwave energy in the 10 Ghz range is transmitted through a test call having flow passing therein through a known geometry. Attenuation and phase shift of the microwave energy is measured and used ... | 04/29/1997 |
| 5498969 | Device for the vector measurement of ultra-high frequency signals of the same angular frequency of the six port junction type The present invention relates to a device for the vector measurement of ultra-high frequency signals of the same angular frequency of the six port junction type, comprising a power divider (10) and a phase shifting circuit (11) two of the six ports of sai... | 03/12/1996 |
| 5473256 | Combination microwave waveguide and pressure barrier A waveguide and pressure barrier for use with devices for measuring fluid parameters of fluids passing in a pipe under high temperature and pressure conditions and utilizing microwave energy for making the measurements, the device including a pair of subs... | 12/05/1995 |
| 5264800 | MMIC transient capture apparatus and method A Monolithic Microwave Integrated Circuit (MMIC) for capturing transients in the GHz range is disclosed. The device includes a transmission line formed in a GaAs substrate. The transmission line includes a number of threshold devices forming shunts on the... | 11/23/1993 |
| 5245291 | Method and apparatus for detecting cable length Method and apparatus for detecting a length of a cable connecting information equipments are disclosed. A reference signal which is a repetitively occurring signal is transmitted through a cable. A phase difference between the reference signal transmitted... | 09/14/1993 |
| 5159275 | Method and apparatus for detecting cable length Method and apparatus for detecting a length of a cable connecting information equipments are disclosed. A reference signal which is a repetitively occurring signal is transmitted through a cable. A phase difference between the reference signal transmitted... | 10/27/1992 |
| 5008610 | Method for harmonic number determination in a microwave frequency counter Method and apparatus for determining a generalized harmonic number in a harominic heterodyne converter wherein the frequency of an input signal is determined from a local oscillator frequency, an intermediate frequency obtained by mixing the local oscilla... | 04/16/1991 |
| 4818949 | Microwave and millimeter-wave spectrum analyzer An apparatus is described which performs real time spectrum analysis of large bandwidth radio frequency signals. The apparatus allows the simultaneous monitoring of all frequencies within the band of interest, and operates in the presence of multiple freq... | 04/04/1989 |
| 4801861 | Apparatus for measuring frequency modulation noise signals having a frequency response compensation circuit A microwave bridge circuit for measuring frequency modulation noise signals arising in low power, high frequency sources having a highly non-constant FM noise versus baseband frequency characteristic includes amplifying and filtering means for excluding s... | 01/31/1989 |
| 4504785 | Sampling spectrum analyzer A sampling spectrum analyzer provides instantaneous continuous wideband spectrum analysis to allow RF signals occurring simultaneously and spaced within the band to be displayed. An input signal is split and each resulting portion is passed down a tapped ... | 03/12/1985 |
| 4415854 | Microwave spectrum analyzer with a synthesized local oscillator A microwave spectrum analyzer comprising a first mixer which provides beats between the output of an YIG oscillator and the spectrum to be analyzed. A second mixer carries out a fixed transposition of said beats. The said YIG oscillator is locked to harmo... | 11/15/1983 |
| 4414505 | Microwave instantaneous frequency measurement apparatus The present invention provides microwave instantaneous frequency measurement apparatus which includes a power divider (2) for dividing an RF input signal line (4) for delaying the first signal, a 3 decibel hybrid coupler (5) for quadrature summing and dif... | 11/08/1983 |
| 4399413 | High speed sampling head A high-speed sampling head is disclosed which provides a transformer to isolate the sampling pulse source from the RF signal line to be sampled. The pulse width limitation of the transformer is overcome by propagating balanced forms of the pulse along a l... | 08/16/1983 |
| 4334187 | Phase sensor for R.F. transmission lines A phase sensing device is described which is useful for indicating the reance condition of a complex load impedance (such as an antenna), with a high degree of accuracy over the frequency range from 3 to 100 MHz. The device uses readily available transmi... | 06/08/1982 |
| 4300092 | Phase match measuring system An apparatus for phase matching transmission lines which generates signals with frequencies and phase characteristics that are representative of the length of the transmission line under test and alternately samples and compares these signals to minimize ... | 11/10/1981 |
