$E$ -Band Mixer With IP1dB Design Consideration for Radio Astronomical Instrumentation
$E$ -Band Mixer With IP1dB Design Consideration for Radio Astronomical Instrumentation
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$E$ -带 IP1dB 设计考虑的频带混频器，适用于射电天文仪器
DOI：
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发表时间：
2018
影响因子：
3
通讯作者：
Zuo‐Min Tsai
中科院分区：
文献类型：
--
作者：
Jhe;Chau;Yuh;Zuo‐Min Tsai
考虑功率压缩，设计了一种用于射电天文的低频e带混频器。对一种天文用e波段接收机进行了分析，得出了混频器的功率线性度指标。推导了由功率压缩引起的噪声-温度误差理论。分析表明，低噪声温度下的接收机对功率饱和更为敏感。根据分析，将混频器的功率压缩设置为小于2% (0.088 dB)，则混频器IP1dB应比输入功率至少高11db，以满足噪声温度为30 - 60 k的接收机的要求。在改进级联混频器的设计中，探讨了晶体管的尺寸，以提供足够的IP1dB和转换增益。所设计的宽带混频器IP1dB高于3dbm。该性能适用于e波段天文外差接收机应用。
A lower sideband E-band mixer for radio astronomy is designed with consideration of the power compression. An E-band receiver for astronomy is analyzed to derive the power linearity specification of the mixer. The theory of noise-temperature error due to the power compression is derived. The analysis reveal that receiver with very low noise temperature is much more sensitive to the power saturation. Based on the analysis, the power compression of the mixer is set to less than 2% (0.088 dB), thus the mixer IP1dB should be at least 11 dB higher than the input power to meet the requirement of the receiver with 30–60-K noise temperature. The transistor sizes were explored in the design of the modified cascode mixer to provide sufficient IP1dB and conversion gain. The designed broadband mixer is with IP1dB higher than 3 dBm. This performance is suitable for the E-band astronomical heterodyne receiver applications.
DOI：
10.1109/tmtt.2016.2639018
发表时间：
2017-01
影响因子：
4.3
作者：
D. Cuadrado-Calle;D. George;G. Fuller;K. Cleary;L. Samoska;P. Kangaslahti;J. Kooi;M. Soria;M. Varonen;R. Lai;X. Mei
通讯作者：
D. Cuadrado-Calle;D. George;G. Fuller;K. Cleary;L. Samoska;P. Kangaslahti;J. Kooi;M. Soria;M. Varonen;R. Lai;X. Mei