A LEO Satellite Mounted 256-element 19GHz CMOS Phased-Array Transmitter with On-chip Amplitude and Phase Monitor | Zendy

Xiaolin Wang | Zendy; Dongwon You | Zendy; Xi Fu | Zendy; Gao Yuan | Zendy; Takeshi Ota | Zendy; Jill Mayeda | Zendy; Jun Sakamaki | Zendy; Ashbir Aviat Fadila | Zendy; Makoto Higaki | Zendy; Jumpei Sudo | Zendy; Hiroshi Takizawa | Zendy; Masashi Shirakura | Zendy; Takashi Tomura | Zendy; Hiroyuki Sakai | Zendy; Kazuaki Kunihiro | Zendy; Kenichi Okada | Zendy; Atsushi Shirane | Zendy

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A LEO Satellite Mounted 256-element 19GHz CMOS Phased-Array Transmitter with On-chip Amplitude and Phase Monitor

Author(s) -

Xiaolin Wang,

Dongwon You,

Xi Fu,

Gao Yuan,

Takeshi Ota,

Jill Mayeda,

Jun Sakamaki,

Ashbir Aviat Fadila,

Makoto Higaki,

Jumpei Sudo,

Hiroshi Takizawa,

Masashi Shirakura,

Takashi Tomura,

Hiroyuki Sakai,

Kazuaki Kunihiro,

Kenichi Okada,

Atsushi Shirane

Publication year - 2025

Publication title -

ieee access

Language(s) - English

Resource type - Magazines

SCImago Journal Rank - 0.587

H-Index - 127

eISSN - 2169-3536

DOI - 10.1109/access.2025.3597989

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

This article presents a 256-element CMOS active phased-array transmitter (TX) that works in Ka-band downlink for low earth orbit (LEO) small satellite communication (SATCOM) applications. The phased array adapts an on-chip monitor circuit which can be used to detect the amplitude and phase for calibration. The TX chip’s output 1 dB compression point (OP1dB) is 11dBm and saturated output power (Psat) is 12dBm for every path. The phased array can support single circular polarization (CP) and dual circular polarization modes. The maximum effective isotropic radiated power (EIRP) for the single CP wave can reach 64.6 dBm under a power consumption of 37.4W. The error vector magnitude (EVM) of this work can support 256APSK modulation in both single CP mode (at 2 Gbaud symbol rate) and dual CP modes (at 250Mbaud symbol rate). As for beam steering ability, the phased array can cover a beam angle of ±66°. Compared to the conventional TX, this work has a larger beam angle and EIRP without sacrificing too much power consumption.

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