| Patent Number |
Title Of Patent |
Date Issued |
| 6553209 |
Upstream/downstream local oscillator methods and structures for wireless communication system tr |
April 22, 2003 |
| Local-oscillator systems for wireless communication systems are realized with oscillator networks that are phase locked to a bit timing clock. Two of the networks provide first and second phase coherent local-oscillator signals respectively to a receiver and transmitter of a transceiver. |
| 6424817 |
Dual-polarity low-noise block downconverter systems and methods |
July 23, 2002 |
| Methods and systems are provided for spectrally separating first and second satellite signals that occupy a common frequency band with different first and second electromagnetic polarizations. These systems and methods facilitate the use of inexpensive single-cable distribution networks |
| 6396803 |
Modulation methods and structures for wireless communication systems and transceivers |
May 28, 2002 |
| Wireless communication methods and structures are provided that enhance communication robustness while reducing cost. They communicate downstream data with orthogonal frequency division multiplexing (OFDM) transmission processes and upstream data with single carrier transmission processe |
| 6363241 |
Muting systems and methods for communication transceivers |
March 26, 2002 |
| Muting systems and methods are described that reduce noise signals that are received in a communication hub which communicates with indoor units (IDUs) of a plurality of communication customers. The systems and methods reduce transmitter signal gain when uplink communication signals to t |
| 6345375 |
Packet-based communication methods and systems having improved data throughput |
February 5, 2002 |
| Packet-based communication methods and systems are provided which improve data throughput and which respond to different error-rate conditions with modifications appropriate for those conditions. In method embodiments, data frames are initially formed to each have N data packets and a fr |
| 6324379 |
Transceiver systems and methods that preserve frequency order when downconverting communication |
November 27, 2001 |
| Full-duplex, coherent transceivers are provided which can directly interface between exisiting data interface modules (e.g., cable modems) and wireless cable providers to facilitate the flow of high-speed downlink communication signals and high-speed uplink data signals. Currently, a |
| 6188370 |
Grid antennas and methods with efficient grid spacing |
February 13, 2001 |
| Paraboloidal grid reflectors and antennas are provided which are lighter and have less wind loading because they efficiently realize selected front-to-back ratios by recognizing the angular distribution in typical differential path losses and feed gains. In particular, the reflectors are |
| 6037903 |
Slot-coupled array antenna structures |
March 14, 2000 |
| Antenna structures are shown that reduce fabrication and assembly time and cost, increase antenna reliability and enhance antenna performance. These structures include resilient flanges that are formed by a slotted ground plane and a rear ground plane which together surround a feed circu |
| 5898455 |
Interface modules and methods for coupling combined communication signals to communication recei |
April 27, 1999 |
| Interface modules are disclosed that can couple combined signals in communication signal bands (e.g., cable television and upper and lower direct broadcast satellite signal bands) to communication receivers (e.g., integrated receiver decoders). These modules facilitate the use of ine |
| 5463407 |
Dual mode/dual band feed structures |
October 31, 1995 |
| A feed structure (24) is disclosed for reception of orthogonal linearly polarized signals from communication satellites. The structure includes probes (34, 36) extended through the back wall (32) of a cavity (28) with associated transmission members (50, 52) and an associated isolation |
