摘 要：網(wǎng)絡(luò)分析儀為測(cè)量變頻器件提供了快速而準(zhǔn)確的測(cè)量方法，根據(jù)標(biāo)量網(wǎng)絡(luò)分析儀和矢量網(wǎng)絡(luò)分析儀的測(cè)量原理，詳細(xì)介紹了用標(biāo)網(wǎng)測(cè)量變頻器變頻損耗的方法，以及用矢網(wǎng)測(cè)量變頻損耗和相位的方法。分析了兩種儀器在測(cè)量中的適用范圍和優(yōu)缺點(diǎn)在變頻器測(cè)量中的優(yōu)缺點(diǎn)。以正交混頻器為例，提供了測(cè)量其幅度不平衡和相位不平衡的網(wǎng)絡(luò)分析儀測(cè)量方法；以本振與射頻信號(hào)頻率范圍重合的特殊應(yīng)用為例，介紹了簡(jiǎn)單準(zhǔn)確的測(cè)量方法。
關(guān)鍵詞：變頻器；標(biāo)量網(wǎng)絡(luò)分析儀；矢量網(wǎng)絡(luò)分析儀；幅頻特性；相頻特性
中圖分類號(hào)：TN711.3 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1672-4984（2007）04-0040-04
Flexible application of network analyzer for measurement of frequency translating devices
ZHANG Na， LI Yuan， JIN Bao-long
（Shanghai Institute of Microwave Equipments，Shanghai 201802，China）
Abstract: Network analyzers provide a method for measurement of frequency translating devices and these methods are more accurate and can save more time. According the principles of scalar network analyzer and vector network analyzer the authors introduced methods to measure conversion loss of frequency translating devices using scalar network analyzer and methods to measure conversion loss and phase using vector network analyzer. They concluded the advantages and disadvantages of them and proposed proper situations for every method. They also gave a quarter mixers as an example and provided measurements for amplitude unbalance and phase unbalance. Simple and accurate measurements were also mentioned as when local oscillator of mixers covers the same frequency range as RF.
Key words: Frequency translating device； Scalar network analyzer； Vector network analyzer； Characteristics of amplitude frequency； Characteristics of phase frequency
