Affiliation:
1. Key Laboratory of Radio Frequency Circuits and Systems, Ministry of Education, Hangzhou Dianzi University, Hangzhou 310018, China
Abstract
A 30~60 GHz broadband down-conversion mixer driven by low local oscillator (LO) power is presented. The down-conversion mixer utilizes an input signal coupling technique based on the Marchand balun to achieve broadband operation and achieves low LO power drive and low DC power consumption through the use of a weak inversion bias with Gilbert switching devices. The broadband conversion of single-ended to differential signals is achieved using the Marchand balun with compensation lines, and an equivalent circuit analysis is performed. For the intermediate frequency (IF) output, a self-biased IF trans-impedance amplifier with current reusing and an active IF balun structure are used to achieve signal amplification and single-ended signal output. Test results show that the proposed mixer achieves a conversion gain of −1.2 to 6.4 dB in an IF output bandwidth of 0.1 to 5 GHz at radio frequency (RF) input frequencies of 30 to 60 GHz and LO driving power of −10 dBm. The DC power consumption of the core mixing unit of the proposed mixer is 4.8 mW, and the DC power consumption including the IF amplifier is 28.3 mW. The proposed mixer uses a 65 nm CMOS technology with a chip area of 0.26 mm2.
Funder
National Natural Science Foundation of China
Reference12 articles.
1. A broadband low-power millimeter-wave CMOS downconversion mixer with improved linearity;Zhu;IEEE Trans. Circuits Syst. II Exp. Briefs,2014
2. A novel 30–90-GHz singly balanced mixer with broadband LO/IF;Wu;IEEE Trans. Microw. Theory Technol.,2016
3. A 5 to 45 GHz distributed mixer with cascoded complementary switching pairs;Lin;IEEE Microw. Wirel. Compon. Lett.,2013
4. Nguyen, T.T., Fujii, K., and Pham, A.V. (2017, January 4–9). A 7–42 GHz dual-mode reconfigurable mixer with an integrated active IF balun. Proceedings of the 2017 IEEE/MTT-S International Microwave Symposium-IMS, Honololu, HI, USA.
5. 24–40 GHz MmWave Down-Conversion Mixer with Broadband Capacitor-Tuned Coupled Resonators for 5G New Radio Cellular Applications;Lee;IEEE Access,2022