| Patent Number |
Title Of Patent |
Date Issued |
| 5697078 |
Wideband channel sniffer for monitoring channel use in a wireless communication system |
December 9, 1997 |
| Channel use in a wireless communication system is monitored for each radio frequency channel spanning a broad allocated bandwidth simultaneously. A transmission having signals in channels spanning the bandwidth is broadband downconverted in analog before being transformed to produce an |
| 5566173 |
Communication system |
October 15, 1996 |
| A communication system having a communication network, such network having a plurality of communication paths interconnected at various nodes of the network. A plurality of subscriber units is adapted to exchange information through the network. A computer is provided having a processor |
| 5563596 |
Arrayed analog-to-digital converters |
October 8, 1996 |
| An analog signal is converted to a digital signal by two analog-to-digital converters. The first converter digitizes the analog signal to produce a first series of samples of the signal. The second converter digitizes the analog signal after it has been shifted in phase by 180 degrees to |
| 5493720 |
High-intercept bandlimited mixer |
February 20, 1996 |
| A mixer converting a frequency of an input signal to an intermediate frequency has an input port receiving an input signal oscillating at a signal frequency and a sinusoidal pump wave oscillating at a pump frequency. A diode is connected between an input network linked to the input p |
| 4381485 |
Microwave test apparatus and method |
April 26, 1983 |
| A method and apparatus for monitoring the resonant frequency and absorption level at resonance of an absorption type resonant cavity which involves providing a voltage controlled oscillator, applying to the control input of the voltage controlled oscillator a control signal having a main |
| 4230956 |
Doubly balanced mixer with optimized dynamic range |
October 28, 1980 |
| A circuit for mixing first and second rf signals to produce an output signal containing a beat frequency comprises a pair of switches each of which has a four diode bridge controlled by the first rf signal. The first rf signal is coupled to a balanced current divider with common mode sig |
| 4112374 |
Doubly balanced mixer with optimized dynamic range |
September 5, 1978 |
| A circuit for mixing first and second rf signals to produce an output signal containing a beat frequency comprises a pair of switches each of which has a four diode bridge controlled by the first rf signal. The first rf signal is coupled to a balanced current divider with common mode sig |
