Time gain compensation circuit and related apparatus and methods

K Chen, TS Ralston - US Patent 10,082,488, 2018 - Google Patents
An ultrasound device, including a profile generator, an encoder configured to receive a
profile signal from the profile generator, and an attenuator configured to receive a signal …

Analog-to-digital drive circuitry having built-in time gain compensation functionality for ultrasound applications

K Chen, KG Fife - US Patent 10,231,713, 2019 - Google Patents
(57) ABSTRACT A time gain compensation (TGC) circuit for an ultrasound device includes a
first amplifier having an integrating capacitor and a control circuit configured to generate a …

Time gain compensation circuit and related apparatus and methods

K Chen, TS Ralston - US Patent 11,215,703, 2022 - Google Patents
An ultrasound device, including a profile generator, an encoder configured to receive a
profile signal from the profile generator, and an attenuator configured to receive a signal …

Integrated digitally controlled linear-in-decibels attenuator

HK Chiu - US Patent 8,076,995, 2011 - Google Patents
An integrated digitally controlled linear-in-decibels attenuator circuit in which one or more
sets of selection switches establish a desired attenuation by selectively connecting the input …

Analog-to-digital drive circuitry having built-in time gain compensation functionality for ultrasound applications

K Chen, KG Fife - US Patent 10,398,414, 2019 - Google Patents
A time gain compensation (TGC) circuit for an ultrasound device includes a first amplifier
having an integrating capacitor and a control circuit configured to generate a TGC control …

Differential source follower having 6dB gain with applications to WiGig baseband filters

Z Soe - US Patent 8,487,695, 2013 - Google Patents
A differential amplifier comprising a first upper device and a first lower device series coupled
between two power supplies and a second upper device and a second lower device series …

Differential source follower having 6dB gain with applications to WiGig baseband filters

Z Soe - US Patent 8,803,596, 2014 - Google Patents
Sallen-Key filters require an operational amplifier with a large input impedance and a Small
output impedance to meet the external filter characteristics. This invention eliminates the …

Differential amplifier circuit and frequency mixer for improving linearity

BS Kim, TS Kim - US Patent 7,808,319, 2010 - Google Patents
A differential amplifier circuit and a frequency mixer for improving linearity are disclosed. The
disclosed differential amplifier circuit includes first and second loads, a first output terminal …

High performance divider using feed forward, clock amplification and series peaking inductors

Z Soe - US Patent 8,680,899, 2014 - Google Patents
A phase lock loop (PLL) is an important component in wireless systems. CMOS technology
offers voltage controlled oscillator designs operating at 60 GHz. One of the difficulties is …

Method and apparatus of minimizing extrinsic parasitic resistance in 60 GHz power amplifier circuits

Z Soe - US Patent 8,406,710, 2013 - Google Patents
Very high frequency circuits suffer from parasitic resistances. At 60 GHz, conventional layout
techniques can introduce loss into the circuit at critical locations. One critical interconnect …