论文信息 - A High Isolation Linear Subharmonic Mixer for Q-Band Application

A High Isolation Linear Subharmonic Mixer for Q-Band Application

An mm-wave sub-harmonic mixer using double- balanced Gilbert-cell topology in a stacked configuration is presented. The circuit applies source degenerate configuration for LO(local oscillator) input and RF (radio frequency) input in order to attain high linearity. The proposed mixer uses a switch transconductance(Sw-Gm) configuration to reduce noise Figure (NF) and obtain frequency doubling. It also helps in achieving high isolation between 2LO-to-RF (local oscillator input to radio frequency input). The proposed mixer attains more than 6 dB of conversion gain, IIP3 (third-order intercept point) of 7.94 dBm, and less than −14 dB of S11 for 40 GHz RF frequency with isolation between 2LO-to-RF of 120 dB.

Darshak Bhatt | Gaurav Srivastava

[1] Jeng‐Han Tsai,et al. A 27–44 GHz CMOS Dual-Ring Subharmonic Up-Conversion Mixer With Linearization Technique , 2022, IEEE Microwave and Wireless Components Letters.

[2] Abdolreza Nabavi,et al. Design of an active CMOS subharmonic mixer with enhanced transconductance , 2017 .

[3] Chien-Hung Liu,et al. A 24–44 GHz Broadband Subharmonic Mixer With Novel Isolation-Enhanced Circuit , 2015, IEEE Microwave and Wireless Components Letters.

[4] Huei Wang,et al. A Compact 60 GHz Integrated Up-Converter Using Miniature Transformer Couplers With 5 dB Conversion Gain , 2008, IEEE Microwave and Wireless Components Letters.

[5] Guo-Wei Huang,et al. GaInP/GaAs HBT Sub-Harmonic Gilbert Mixers Using Stacked-LO and Leveled-LO Topologies , 2007, IEEE Transactions on Microwave Theory and Techniques.

[6] Yeong-Her Wang,et al. A 10–40 GHz Broadband Subharmonic Monolithic Mixer in 0.18 $\mu$ m CMOS Technology , 2009, IEEE Microwave and Wireless Components Letters.