Patent ID: 7142836
Filing Date: 2006-11-28
Classification: H01P,H05K

Abstract:
1. A microwave filter distributed on a circuit board of a wireless communication product, comprising an input terminal, a resonant chamber of double frequencies, and an output terminal of the microwave filter directly distributed on the circuit board of the wireless communication product as a plurality of microstrips by utilizing a manufacturing technique of printed circuit board, wherein a microstrip circuit of the resonant chamber of double frequencies comprises: wherein the input terminal of the microstrip circuit, the first microstrip circuit, and the second microstrip circuit are provided at a top layer of the circuit board, the third microstrip circuit, the fourth microstrip circuit, and the output terminal of the microstrip circuit are provided at a bottom layer of the circuit board, and two through vias are provided on the circuit board for interconnecting the top and the bottom layers of the circuit board.