In fact, before I talk about all these things let me tell you in fact, we had actually got one of the problem and the problem which was given to us by one of the labs was that they wanted a very broad band filter, ok.
असल में इन सब चीजों को बताने के पहले,आपको बताना चाहता हूं, कि एक  प्रयोगशाला के द्वारा हमें एक समस्या दी गई थी  वह एक बहुत ही बड़े बैंड का फिल्टर  चाहते थे ठीक है.