大多数双平衡二极管混频器采用环形(二极管)结构,星形结构虽然用得还不普遍,但它有若干重大优点,包括 IF 带宽宽,平衡性好,互调抑制和寄生信号响应的抑制能力强。理论上,环形结构混频器可用在 IF 频段与 RF 或 LO 交叠的情况下,但这一优点更多的是理论上的实际并不如此。本文叙述了星形混频器的设计。 Most double-balanced diode mixers have a ring (diode) structure. Star-shaped structures, although not commonly used, have several significant advantages including wide bandwidth IF, good balance, suppression of intermodulation and suppression of parasitic signal responses strong ability. In theory, a ring structure mixer can be used where the IF band overlaps RF or LO, but this advantage is more theoretical in nature than the case. This article describes the design of the star mixer.