A 0.9GHz self-packaged power amplifier based on SISL platform

In this paper, a novel 20W self-packaged power amplifier (PA) based on substrate integrated suspended line (SISL) platform is proposed. Dual-layer inductors, capacitors and feedlines are proposed to minimize loss and size, all of them are embedded inside the multi-layer SISL structure, and the implemented PA becomes self-packaged. The simulated PA operates at 0.9GHz, with a fractional bandwidth of 22.2%, the maximum PAE is 49.74% with an output power of 43dBm, the maximum gain is 18.91dB, the in-band gain flatness is better than 0.5dB and the total size is only 0.7λ_g × 0.37λ_g × 0.03λ_g, λ_g represents the guided wavelength at center frequency 0.9GHz.