June,7 2016

『Report on Sales Activities and R&D of Tamagawa Electronics Co., Ltd. for theBusiness Year Ending in March 2017』
The business result of Tamagawa Electronics Co., Ltd. of the business year ending in March 2016 wassignificant decrease of revenue and profit due to the effect by drastic investment control in mobile phone
communication infrastructure market. However, as a result of focusing on acquirement of orders fromgovernmental agencies, communication and broadcasting industries of other public domain to recover thebusiness result, order balance as of the end of May 2016 as the latest increased up to 54.3% compared tothe same period of the previous year. Since this period started, furthermore, inquiries from suchindustries have been increasing and order balance has been accordingly recovering at a good rate.
Responding to order recover since the previous period, Tamagawa Electronics Co., Ltd. began to workon active research and development based on high-frequency and analog technologies which we haveelaborated in the following industries for 48 years since our foundation to lead to order acquirement, as
well as focusing on order acquirement activities of device for overseas mobile communication
infrastructure based on low price proposal by Tamagawa Electronics Vietnam Co., Ltd., our subsidiary
which began production activities in October of last year in order to respond to our stakeholders’expectations and contribute to fulfillment of advanced information society by creating new value andaiming for continuous growth with our best effort.
1． Mobile phone infrastructure market
5G (next generation mobile system) of which
research and development have been accelerated worldwide forcommercialization in 2020 is planning to newly have technologies of SHF
band, quasi-millimeter to millimeter band frequency use, and “carrier
aggregation,” “Massive-MIMO,” “beam forming,” “NOMA,” etc. in order toaccomplish transmission speed 100 times as fast as the existing system, andwe are working on the following development themes to meet these technicalneeds.
・Development of quasi-millimeter to millimeter band analog frontend
modules・Development of multiple transmission frequency compatible
multichannel filters (multiple wave duplexer)
・Development of electromagnetic field measurement / electric fieldsensor for field test of beam forming
・Development of next generation high efficiency power amplifier for portable base station
・Development of reliability evaluation test device for next generation mobile terminals

2． Governmental agency infrastructure market
We are working on the following development themes as a major electric
appliance manufacturer participating in the projects such as security, disasterprevention, space / satellite, weather observation in the “national territorystrengthen plan” aiming for self-defense in rationality with neighboring countries
and nation-building having resistance to act of God and natural disaster.
・Development of digital signal board which enables high-speedtransmission of large capacity in the latest weather observationand electric wave monitoring system
・Development of optical transmission device for radar detection
system and extension unit for subsystem
・Development of quasi-millimeter band wireless device for blindzones in remote areas
3． Wireless for professional use
Infrastructure construction along with digitalization and enlargement ofcommunication has been active in wireless for professional use, and more of
our optical transmission systems have been employed for railways andwireless for professional use in airport for its future expandability andconvenience for laying. We are working on the following development
themes in order to respond to further needs for smaller scale and highfrequency.
・Development of small-size C band optical transmission device
4． Infrastructure construction for the Olympics in 2020
Communication and broadcasting infrastructure constructions have been
accelerated along with express way construction in the capital region.
Furthermore, as terrestrial digital broadcasting system renewal has been
started and such demand has been increasing due to the Olympics
Although we have large share in the existing system, we are also working onthe following development themes in order to respond to the needs for thenext generation system.
・Development of AM / FM retransmission device for blind zones
・Development of subsystem for the next generation terrestrial digital
broadcasting5． Measuring devices, etc.
It has become very important to accurately measure and grasp
electromagnetic compatibility (EMC) which induces malfunction of electronic
devices in today’s car electronics which has become a lump of electroni
control devices by improvement of fuel cost and safety system such as crashprevention and automatic driving system, etc. starting from hybrid cars.
In order to respond to further arising needs for accurate measurement, we areworking on the following development themes
We are emphasizing its validity through presentation at academic conferences and industrial paper sothat it becomes the industry’s standard measurement
・Development of low frequency optical power feeding for automobiles RoF system