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Radar and communications systems require frequency references with ultimate noise performance with the aim of improving the sensitivity of the advanced devices. In order to achieve a very low noise floor combined with a high level output, AR-Electronique has studied and developed a new filter generation. In this paper, we present a specific filter design using monolithic crystal resonators technology...
When very small size, microwave frequency and high quality factor resonators are required, bulk acoustic wave (BAW) resonators are generally used. However, in devices such as oscillators, the use of two stacked BAW resonators, a structure known as stacked crystal filter, can help to overcome the fundamental trade-off between tunability and phase-noise performance. For that reason, this paper evaluates...
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