Objective To determine the relative effectiveness of second generation ablation techniques in the treatment of heavy menstrual bleeding. Design Network meta-analysis on the primary outcome measures of amenorrhoea, heavy bleeding, and patients’ dissatisfaction with treatment. Data sources Nineteen randomised controlled trials (involving 3287 women) were identified through electronic searches of ...

M icrowave equivalent-circuit theory is like a grand old building: elegant, carefully crafted, passed from generation to generation, and rooted in history. Traveling waves, the measureable electromagnetic field solutions of Maxwell’s equations in a transmission line, form the foundation of the theory. You must descend into the basement to see them; not many people do so. It is in this “basement...

In the development of microwave-to-optical (MO) quantum transducers, suppressing added noise induced by optical excitation remains a major challenge. Here we report an integrated superconducting cavity electro-optic circuit based on single crystalline thin-film aluminum nitride ultralow microwave and losses. We demonstrate efficient bi-directional MO conversion at milli-Kelvin temperatures, wit...

This paper presents a high-power microwave oscillator using recursive balanced amplification technique. The proposed architecture is configured by power amplifier (BPA) with class-AB operation and two feedback networks. Each circuit consists of phase shifter high-Q bandpass filter (BPF). BPA an input hybrid coupler (IHC) output (OHC) to divide recombine signals amplified through amplifiers (PAs...