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Liquid crystal polymer is a promising substrate for mm-wave packaging. In this work, we present the characterization of liquid crystal polymer from 110 GHz to 170 GHz. The microstrip ring resonator method is used for the relative permittivity and loss tangent extraction at mm-wave frequencies. The effect of radiation loss in the extraction of loss tangent is analyzed through full electromagnetic 3D...
The high-power operation of a modular and compact power amplifier (PA) is demonstrated using gallium nitride (GaN) transistors and power-combining networks implemented on an aluminum nitride (AlN) substrate. The power-combining network, tuned for X-Band operation, includes matching circuits and Wilkinson power dividers (WPDs) with tantalum nitride (TaN) thin-film resistors. PA efficiency is increased...
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...
The design and implementation of a compact, flexible and lightweight X-band transmitter (Tx) module based on high-power gallium nitride (GaN) transistor technology and a low-cost organic package made from liquid crystal polymer (LCP) is presented. In-package measurements of the power amplifier (PA) at 8 GHz show a P.A.E.max of >31%, P1dB of 20 dBm and gain of 11.42 dB. A 4×1 patch antenna array...
The design and implementation of a compact, flexible and lightweight X-band transmitter (Tx) module based on high-power gallium nitride (GaN) transistor technology and a low-cost organic package made from liquid crystal polymer (LCP) is presented. In-package measurements of the power amplifier (PA) at 8 GHz show a P.A.E.max of >31%, P1dB of 20 dBm and gain of 11.42 dB. A 4×1 patch antenna array...
This work presents the design and implementation of a compact, three-pole, bandpass filter at 9.75GHz using evanescent-mode, quartz-loaded, rectangular-waveguide resonators arranged in a novel manufacturing topology. The simplicity of the proposed design results in a fast and low-cost manufacturing process, which is easily extendible for high-yield commercial deployment using wire electrical discharge...
This work shows the design of stripline beam-former network components at 9.5GHz in liquid crystal polymer. Particular emphasis is placed in the implementation of via fences to minimize radiation loss and cross coupling of radio frequency (RF) signals to other bias and digital lines that would feed multiple chips in a single antenna package. Additionally, a Coplanar-Waveguide-to-Stripline transition...
For the first time, a transmit-receive (TR), 64-element phased array fully driven by Silicon Germanium (SiGe) integrated circuits and implemented on organic substrates is demonstrated at 9.5GHz. The array was realized on a duroid and liquid crystal polymer substrate stack-up. The radiating elements are driven by SiGe-based TR modules and power amplifiers. Additionally, radio-frequency micro-electromechanical...
RXP is a novel and emerging low loss thin core experimental material that has shown promising results as an RF dielectric substrate. In this paper, Ring Resonator Method was utilized to characterize its dielectric properties (relative permittivity and loss tangent) from 30 to 70 GHz frequency domain. BT, a PCB compatible substrate, and RO3003™, an RF organic material, were also characterized for the...
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