Miniaturized hairpin resonator filters and their application toreceiver front-end MICs |
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Authors: | Sagawa M Takahashi K Makimoto M |
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Affiliation: | Matsushita Electr. Ind. Co. Ltd., Kawasaki; |
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Abstract: | The authors describe the fundamental characteristics of miniaturized hairpin resonators having parallel coupled lines and show their applications to bandpass filters and receiver front-end microwave integrated circuits (MICs). A method for calculating filter coupling parameters using a general-purpose microwave circuit simulator is presented. The bandpass filters have a suitable structure for MICs, and their size is one-half that of conventional hairpin resonators without increasing insertion losses. Trial receiver front-end MICs using these filters have been developed and have shown good characteristics such as low noise and a high image suppression ratio. They are applicable to a frequency range above the L-band |
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