Kazumi Shiikuma
NEC
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Publication
Featured researches published by Kazumi Shiikuma.
compound semiconductor integrated circuit symposium | 2013
Makoto Hayakawa; Kazumi Shiikuma; Tomoya Kaneko
This paper presents a new theoretical concept, design implementation and experimental results of a compact dual-band GaN-HEMT Doherty power amplifier (DPA) with broad bandwidths. Measured results well agree with simulation. Small signal 3 dB bandwidths at 700 MHz band and 2.1 GHz band are 300MHz and 450 MHz, respectively. Total bandwidth of 750 MHz which covers the IM3 bandwidth of LTE-A signal is achieved. Drain efficiency at 6 dB back off exceeds 43% over 100 MHz bandwidths at both bands. The fabricated dual-band DPA is 135 × 65 mm2.
Archive | 2010
Shingo Yamanouchi; Kazuaki Kunihiro; Kazumi Shiikuma
Archive | 2009
Kazuaki Kunihiro; Shingo Yamanouchi; Kazumi Shiikuma
Archive | 2005
Kazumi Shiikuma
Archive | 2012
Makoto Hayakawa; 早川 誠; Kazumi Shiikuma; 一実 椎熊
Archive | 1999
Kazumi Shiikuma; Toyosaka Yamasaki
Archive | 2009
Kazuaki Kunihiro; Shingo Yamanouchi; Kazumi Shiikuma
Archive | 2003
Kazumi Shiikuma
Archive | 2007
Kazumi Shiikuma
Archive | 2009
Keijirou Kadomatsu; Hiroshi Takahashi; Kazumi Shiikuma
