US 12,034,407 B2
Up/down frequency converter with millimeter-wave low-phase-noise local oscillator
Jaeyong Ko, Gyeonggi-do (KR); Namkyoung Kim, Gyeonggi-do (KR); Chanwook An, Gyeonggi-do (KR); Kyungho Yoo, Gyeonggi-do (KR); and Tongho Chung, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd, (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Oct. 20, 2022, as Appl. No. 17/970,256.
Application 17/970,256 is a continuation of application No. PCT/KR2022/007473, filed on May 26, 2022.
Claims priority of application No. 10-2021-0083677 (KR), filed on Jun. 28, 2021; and application No. 10-2021-0139254 (KR), filed on Oct. 19, 2021.
Prior Publication US 2023/0043914 A1, Feb. 9, 2023
Int. Cl. H03D 7/14 (2006.01); H04B 1/00 (2006.01); H04B 1/04 (2006.01)
CPC H03D 7/1466 (2013.01) [H03D 7/1441 (2013.01); H04B 1/0096 (2013.01); H04B 2001/0416 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
an intermediate frequency (IF) port configured to input or output a signal in a first frequency band;
a radio frequency (RF) port configured to input or output a signal in a second frequency band higher than the signal in the first frequency band;
a passive mixer configured to convert the signal in the first frequency band into the signal in the second frequency band or convert the signal in the second frequency band into the signal in the first frequency band;
a local oscillator (LO) configured to generate an LO signal in one of a plurality of frequency bands based on a phase locked loop (PLL) comprising a third-order passive filter and provide the LO signal to the passive mixer; and
a bi-directional amplifier arranged between the IF port and the passive mixer and comprising a gain equalizer configured to control gain flatness of a signal input to or output from the IF port.