Patent ID: 7194245
Filing Date: 2007-03-20
Classification: H04B

Abstract:
1. A high-frequency signal receiver comprising: a first local oscillator including a first phase-locked-loop (PLL) circuit; a second local oscillator including a second phase-locked-loop (PLL) circuit; a first mixer formed of a balanced circuit having one port for receiving a high-frequency signal and another port for receiving an output from said first local oscillator; a filter formed of a balanced circuit for receiving an output from said first mixer; a second mixer formed of a balanced circuit having one port for receiving an output from said filter and another port for receiving an output from said second local oscillator; a board having said first and second local oscillators, said first and second mixers, and said filter mounted thereto; and a crystal oscillator mounted on said board, for oscillating a reference signal for said first and second PLL circuits; wherein said first mixer, said filter, and said second mixer are located to form a letter L, and said filter is located at a corner of said letter L; and wherein said crystal oscillator, said first mixer, said filter, and said second mixer are located at four corners of a substantial rectangle, respectively.