Abstract: A shield and a method for shielding are provided for preventing radio frequency energy from entering or exiting an electronic device. The shield includes a frame surrounding the electronic device. The frame has a first frame wall and a second frame wall arranged with a first gap in between that extends along the first frame wall. The first frame wall is arranged in a first plane, the second frame wall is arranged in a second plane, and the first plane intersects the second plane. The shield also includes a cover surrounding the frame. The cover has a first cover wall and a second cover wall arranged with a second gap in between that extends along the second cover wall. The arrangements of the first gap and the second gap prevent radio frequency energy from entering or escaping the electronic device.

Abstract: A time slot synchronizer that includes a sampler, which is configured to successively sample a baseband signal. The baseband signal is divided into a number of frames, and each frame is divided into a plurality of symbols. The sampler divides each symbol into a plurality of sample bins and generates a first sample group from a first frame by sampling each symbol in the first frame. The sampler uses a predetermined first and second sample bin for sampling the first frame. Next, the sampler generates a second sample group from a second frame by sampling each symbol in the second frame in a third and fourth sample bin. The third and fourth sample bins, however, are shifted a certain number of sample bins relative to the first and second sample bins, respectively.

Abstract: A predetermined error vector magnitude reduction circuit exploits scatter patterns that develop at the output of modem wireless communication systems during phase state transition. Digital inphase and quadrature input signals to the circuit, typically from a baseband processor, are compared to known characteristic bit patterns that are pre-stored in a lookup table. Modified data that correspond to the known characteristic bit patterns is supplied to the circuit to replace the data signals themselves. The modified data may be digital data that replaces the digital signals at the input to the inphase and quadrature DACs, or analog data that replaces the analog output of the DACs.

Abstract: A display for a mobile radio telephone apparatus includes a single 7, 8 segment LED display for displaying alphanumeric characters one at a time in sequence as dialed, and which also displays indications of various operating parameters of the telephone apparatus, such as a roaming function or in use status, by using predetermined ones of the same segments that are used to display the alphanumeric characters. In this way, a single seven segment display plus an eighth display indicator segment is all that is required to display any character, digit or indication of operational status of the mobile radio telephone apparatus.

Abstract: A base station is configured including an internal bus to connect a terminal section, transceivers that perform control and management of information to be transmitted or received and carries out radio communication at a predetermined radio frequency and on a predetermined communication method, and a controller connecting section that executes communication with a base station controller. The transceivers each comprise a transmitter/receiver section that transmits and receives radio waves at a predetermined radio frequency and using a predetermined communication method, and a logical control unit that performs control of the transmitter/receiver section and interference detection.