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Class Information
Number: 455/67.16
Name: Telecommunications > Transmitter and receiver at separate stations > Having measuring, testing, or monitoring of system or part > Phase measuring (e.g., group delay, propagation effect, etc.)
Description: Subject matter including means to measure the change in phase of propagating waves.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5119399 |
Quadrature measurement and calibration of a vector modulator |
Jun. 2, 1992 |
| 5077759 |
Phase adjusting system for a radio communication system |
Dec. 31, 1991 |
| 5052048 |
Crime deterrent system |
Sep. 24, 1991 |
| 5046066 |
Wireless local area network |
Sep. 3, 1991 |
| 5014344 |
Method for synchronizing the transmissions in a simulcast transmission system |
May. 7, 1991 |
| 4907247 |
Satellite delay simulation system |
Mar. 6, 1990 |
| 4890333 |
Test bench for wideband radio link |
Dec. 26, 1989 |
| 4806853 |
High accuracy frequency modulation waveform tester |
Feb. 21, 1989 |
| 4800387 |
Boresight chamber assembly apparatus |
Jan. 24, 1989 |
| 4696053 |
Antenna alignment system and method |
Sep. 22, 1987 |
| 4667202 |
Mobile radio network |
May. 19, 1987 |
| 4607257 |
Remote calibrating system for satellite time |
Aug. 19, 1986 |
| 4516269 |
Automatic equalization for a simulcast communication system |
May. 7, 1985 |
| 4419766 |
Methods and means for providing improved air/ground radio telephone communications |
Dec. 6, 1983 |
| 4404514 |
Fault detection system as for locating faulty connections in a cable television system |
Sep. 13, 1983 |
| 4381546 |
System for the quantitative measurement of impairments in the communication channel of a quadrature amplitude modulation data communication system |
Apr. 26, 1983 |
| 4363131 |
Built-in group delay testing arrangement for an FM radio system |
Dec. 7, 1982 |
| 4346470 |
Initial acquisition of synchronization for a station in a TDMA satellite communication network |
Aug. 24, 1982 |
| 4317206 |
On line quality monitoring |
Feb. 23, 1982 |
| 4310722 |
Mobile radiotelephone station two-way ranging system |
Jan. 12, 1982 |
| 4264959 |
Testing procedure and circuit for the determination of frequency distortions and group delay time distortion of a test object |
Apr. 28, 1981 |
| 4201987 |
Method for determining antenna near-fields from measurements on a spherical surface |
May. 6, 1980 |
| 4194088 |
Modulation monitor for AM stereophonic broadcasts |
Mar. 18, 1980 |
| 4143251 |
Circuitry and method for locating buried cable splices |
Mar. 6, 1979 |
| 4118668 |
R.F. Network antenna analyzer employing sampling techniques and having remotely located sampling probes |
Oct. 3, 1978 |
| 4107735 |
Television audience survey system providing feedback of cumulative survey results to individual television viewers |
Aug. 15, 1978 |
| 3997842 |
Method and apparatus for monitoring modulation devices for video signals |
Dec. 14, 1976 |
| 3988678 |
Circuit arrangement for the measuring of group delay and attenuation distortions |
Oct. 26, 1976 |
| 3958083 |
Acquisition system for the SDMA/TDMA satellite communication system |
May. 18, 1976 |
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