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This paper presents, for the first time, a microfluidic tuning solution on a multilayer organic substrate to tune the frequency response of a GaN-based power amplifier (PA) from 2.4 GHz to 5.8 GHz and vice versa. By changing the fluid inside the matching networks microchannels, the packaged PA large signal response can be tuned allowing it to work optimally at the two specified frequencies based on...
This paper presents, for the first time, a tunable microstrip microfluidic bandpass filter, with a center frequency of 1 GHz, on liquid crystal polymer (LCP). A 60 mil cavity, initially filled with distilled (DI) water (εr = 80), is placed below a 2 mil LCP layer. Based on this multilayer structure, the dimensions of microstrip lines are determined. In order to tune the filter center frequency, DI...
This paper presents a microfluidic cooling solution for passive and active devices on liquid crystal polymer (LCP). Distilled (DI) water circulates inside a 15 mil micromachined channel and takes away the dissipated heat from passive and active heat sources. A micropump is used to provide enough pressure to inject the fluid and to ensure its circulation. A 20 W surface mount resistor is cooled with...
This paper presents, for the first time, an integrated microfluidic cooling scheme on multilayer organic liquid crystal polymer (LCP) substrate for high power X-band gallium nitride (GaN) devices and amplifiers. The channel is micromachined on LCP and a mixture of water and ethylene glycol is used as a coolant. A 3D electro-thermal model of the microfluidic channel has been created, which illustrates...
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