Input filed loses or Remove focus when soft keyboard open in Ionic and Angular js

This is my Code:

<ion-view>
    <ion-content class="login_bg">
        <div class="login_logo"><img src="img/login_logo.png" alt=""></div>
            <div class="register_page">
                <input type="email" name="name" placeholder="Email" ng-model="login_info.forgetmail" ng-enter="forgetPassword()" />
             <div class="clearfix">
                 <a class="signup" ng-click="forgetPassword()">Submit</a>
             </div>
        </div>
    </ion-content>
</ion-view>

Problem: When I input in the input field, the soft keyboard opens and it removes focus from the input field. I have to retype on the input field. Please help me for this issue. I have tried but cannot find the exact answer for this..