MICROSTRIP FILTER AND MICROPHONE DEVICE USING SAME

A microstrip filter is provided in the present disclosure. The microstrip filter includes a substrate having a first surface and a second surface opposite to each other, a first spiral metal line formed on the first surface of the substrate, and a second spiral metal line formed on the second surfac...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	Chi Sijie
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS INDUCTANCES LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MAGNETS PUBLIC ADDRESS SYSTEMS RESONATORS RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS WAVEGUIDES
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