Akademik Veri Yönetim Sistemi
IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS, 2025 (SCI-Expanded)
This letter introduces a novel thermal management system for RF applications using a suspended finite ground coplanar waveguide (FG-CPW) line, fabricated via laser-enhanced direct print additive manufacturing (LE-DPAM). Polyether ether ketone (PEEK) bridges that support the FG-CPW lines are printed using fused deposition modeling (FDM), and Dupont CB028 conductive paste and Creative Materials 127-03 insulator paste are deposited with microdispensing. The FG-CPW geometry is defined with a 351 nm femtosecond laser by machining slots into the conductor before insulator deposition. To enhance thermal management without compromising RF performance, the system employs mineral oil in direct contact with the FG-CPW. Measurements show that immersion in static mineral oil increases the power handling limit by similar to 4.2 dB compared to air exposure. Simulations predict up to 50 dBm power handling at a similar to 33 cm(3)/s mineral oil flow rate. This direct coolant approach demonstrates strong potential for improving the RF power handling performance of high-power RF circuits.