摘要:
An RF receiver front end includes a variable gain low noise amplifier and/or a variable gain mixer to provide gain variability in the receiver. This gain variability may be used during, for example, automatic gain control operations. In at least one embodiment, the variable gain LNA is a broadband device that is capable of supporting multiple wireless standards.
摘要:
An encoded input bit stream is interleaved across a number of symbols having different bit sizes in a manner that ensures that the bits assigned to each symbol from the bit stream are separated by a minimum separation. In this manner, bits that are adjacent within the bit stream do not get assigned to the same symbol.
摘要:
Techniques and structures are provided to allow a wireless data device to operate within a wireless personal area network without the use of a centralized coordination function.
摘要:
A power amplification system within an RFID reader uses feedback to linearize a transfer function of the system. ASK modulation is used in the system. An envelope of an output signal of a non-linear power amplifier is fed back to an input where it is combined in an integrator with an ASK modulation signal to generate a pre-emphasized modulation signal. The pre-emphasized modulation signal is then applied to the power amplifier to generate a linearized output signal.
摘要:
A miniaturized planar microstrip balun includes first and second microstrip coupling segments that are considerably shorter than a quarter of a guide wavelength (λg/4 ). In at least one embodiment, a microstrip balun is provided that does not require the use of lumped circuit elements or short circuit terminations.
摘要:
An edge-triggered flip flop includes a clocking portion having first and second transistor stacks that are coupled to first and second storage nodes of a memory element, respectively. In at least one embodiment, a clock signal is applied to an input of at least one transistor in each stack and a delayed and possibly inverted version of the clock signal is applied to an input of at least one other transistor in each stack to clock new data into the memory element.
摘要:
A memory management unit (MMU) includes a translation look-aside buffer (TLB) that stores memory access steering data within corresponding TLB entries for use in steering memory access operations.
摘要:
An integrated balun includes a low pass filter and a high pass filter that are formed on a semiconductor chip using tunable reactive elements. The outputs of the low pass filter and the high pass filter are tied together to form the single ended output of the balun. The inputs of the low pass filter and the high pass filter form the differential inputs of the balun. The low pass filter and the high pass filter each include a number of tunable networks for achieving the tunable reactive elements. Each tunable network includes at least one switching transistor and at least one fixed value reactive elements. In at least one embodiment, dynamic biasing circuitry may be provided to improve the linearity and reduce the insertion loss of the balun.
摘要:
Code shortening techniques are used to achieve a variety of code lengths and code rates for Euclidean geometry low density parity check (EG-LDPC) codes.