-
- HIRAI Akihito
- Mitsubishi Electric Corporation Information Technology R&D Center
-
- TSUKUI Yuki
- Mitsubishi Electric Engineering Company, Limited
-
- TSUTSUMI Koji
- Mitsubishi Electric Corporation Information Technology R&D Center
-
- MORI Kazutomi
- Mitsubishi Electric Corporation Information Technology R&D Center
抄録
<p>This paper demonstrates a phase compensation technique using varactors for variable-gain phase shifters (VGPSs). The VGPS consists of an I/Q generator and I/Q variable gain amplifiers (I/Q VGAs). I/Q VGAs based on common-emitter stages are enabled to control the gain by adjusting the collector current of the transistor. However, the phase control performance degenerates because the input capacitance varies with the collector current. The proposed phase compensation technique reduces the variation in the insertion phase of the I/Q VGA by adjusting the voltage of the varactor provided at its input and maintaining the input capacitance constant in any gain state. As a result, the VGPS can provide a low phase and amplitude error under phase control. A Ka-band VGPS with the proposed phase compensation technique, fabricated in a 130-nm SiGe BiCMOS process, demonstrates a 0.73° and 0.06 dB improvement in the RMS phase and amplitude error compared with the case without the compensation technique. The VGPS achieves measured RMS amplitude and phase errors of less than 0.19 dB and 0.75°, respectively, in an amplitude control range of more than 20 dB with a frequency range of 28 to 32 GHz.</p>
収録刊行物
-
- IEICE Transactions on Electronics
-
IEICE Transactions on Electronics E106.C (11), 677-688, 2023-11-01
一般社団法人 電子情報通信学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390297979838116224
-
- ISSN
- 17451353
- 09168524
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- Crossref
-
- 抄録ライセンスフラグ
- 使用不可