Phase frequency detector (PFD) circuit with improved lock time

PN Mirajkar, JC Goyal, S Aniruddhan - US Patent 9,503,105, 2016 - Google Patents
Described examples include circuitry and methods to control lock time of a phase lock loop
(PLL) or other locking circuit, in which a phase frequency detector (PFD) circuit is switched …

Linear and polar dual mode transmitter circuit

S Aniruddhan, C Narathong, R Sridhara… - US Patent …, 2013 - Google Patents
Method and apparatus for configuring a transmitter circuit to support linear or polar mode. In
the linear mode, a baseband signal is specified by adjusting the amplitudes of in-phase (I) …

Reduced power-consumption receivers

J Deng, A Hadjichristos, A Tasic, F Bossu - US Patent 8,639,205, 2014 - Google Patents
BACKGROUND In a communication system, a receiver receives a radio frequency (RF)
signal from a transmitter, and down-converts the received signal from RF to base-band using …

Variable-size mixer for high gain range transmitter

JP Moreira - US Patent 9,184,699, 2015 - Google Patents
BACKGROUND Typical communication systems, employing communica tion standards such
as GSM (Global System for Mobile Com munication), GPRS (General Packet Radio Service) …

Programmable driver for frequency mixer

LE Connell, K Jaeger - US Patent 10,404,212, 2019 - Google Patents
The disclosure relates to technology for shifting a frequency range of a signal. In one aspect,
a circuit comprises a frequency mixer, a frequency synthesizer configured to generate an …

Variable-size mixer for high gain range transmitter

JP Moreira - US Patent 9,059,661, 2015 - Google Patents
BACKGROUND Typical communication systems, employing communication standards such
as GSM (Global System for Mobile Communication), GPRS (General Packet Radio Service) …

Mixer architecture

LHM Hesen, J Van Sinderen - US Patent App. 12/739,153, 2010 - Google Patents
This invention relates to a device, a method, a system, wherein at least two mixer units are
associated with at least two different mixer frequencies, and wherein each of said mixer units …

Common Local Oscillator For Multiple Transceivers

R Morris - US Patent App. 13/673,268, 2014 - Google Patents
The specification and drawings present a new apparatus and method for using a common
local oscillator for multiple transceivers (eg, in a BST unit). One or two shared local …

Configurable harmonic rejection mixer (HRM)

KD Holland, JJ Lee, PT EGAMBARAM… - US Patent …, 2024 - Google Patents
This disclosure provides systems, methods, and devices for wireless communication that
support reconfiguring degeneration components in a converged RF transceiver supporting …

Programmable driver for frequency mixer

LE Connell, K Jaeger - US Patent 11,595,003, 2023 - Google Patents
US11595003B2 - Programmable driver for frequency mixer - Google Patents
US11595003B2 - Programmable driver for frequency mixer - Google Patents …