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We report on high efficiency, high power and low phase noise resonant tunneling diode (RTD) oscillators operating at around 30 GHz. By employing a bias stabilization network which does not draw any direct current (DC), the oscillators exhibit over a 10-fold improvement in the DC-to-RF conversion efficiency (of up to 14.7%) compared to conventional designs (0.9%). The oscillators provide a high maximum output power of around 2 dBm, and low phase noise of-100 dBc/Hz and-113 dBc/Hz at 100 kHz and 1 MHz offset frequencies, respectively. The proposed approach will be invaluable for realizing very high efficiency, low phase noise and high-power millimeter-wave (mmwave) and terahertz (THz) RTD-based sources.

The paper reports on a 15 Gbps wireless link that employs a high power resonant tunneling diode (RTD) oscillator as a transmitter. The fundamental carrier frequency is 84 GHz and the maximum output power is 2 mW without any power amplifier. The reported performance is over a 50 cm link, with simple amplitude shift keying (ASK) modulation utilized. The 15 Gbps data link shows correctable bit error rate (BER) of 4.1×10-3 , while lower data rates of 10 Gbps and 5 Gbps shows BER of 3.6×10-4 and 1.0×10-6 , respectively. These results demonstrate that the RTD transmitter is a promising candidate for the next generation low cost, compact, ultra-high data rates wireless communication systems. Index Terms-resonant tunneling diode, wireless communication systems, amplitude shift keying, oscillator, high power transmitter.

Thick film hydrogen silsesquioxane planarization for passive component technology associated with electronic-photonic integrated circuits.