- 著者
-
Ryo KITAMURA
Koichiro TANAKA
Tadashi MORITA
Takayuki TSUKIZAWA
Koji TAKINAMI
Noriaki SAITO
- 出版者
- 一般社団法人 電子情報通信学会
- 雑誌
- IEICE Transactions on Electronics (ISSN:09168524)
- 巻号頁・発行日
- vol.E96.C, no.10, pp.1301-1310, 2013-10-01 (Released:2013-10-01)
- 参考文献数
- 14
- 被引用文献数
-
3
4
1
This paper presents an automatic gain control (AGC) system suitable for 60GHz direct conversion receivers. By using a two step gain control algorithm with high-pass filter cutoff frequency switching, the proposed AGC system realizes fast settling time and wide dynamic range simultaneously. The paper also discusses wide-bandwidth variable gain amplifier (VGA) design. By introducing digitally-controlled resistors and gain flattening capacitors, the proposed VGA realizes wide gain range while compensating gain variations due to parasitic capacitance of MOS switches. The AGC system is implemented in a transceiver chipset where RFIC and BBIC are fabricated in 90nm CMOS and 40nm CMOS respectively. The measurement shows excellent dynamic range of 47dB with +/-1dB gain accuracy within 1µs settling time, which satisfies the stringent requirements of the IEEE802.11ad standard.