Investing.com – The dollar Thursday pushed above 105 yen for the first time in three weeks.
The dollar was up 1.07% at 105.62 yen at 04:20 ET after a high of 105.75.
There is speculation of aggressive stimulus measures by Japan to reflate the economy.
Former Fed chief Ben Bernanke reportedly has floated the idea of Japan issuing perpetual bonds.
Japanese officials have ruled out using helicopter money, or flooding the market with yen.