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 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …