the simplest design for a radio/microwave transmitter antenna is a vertical conducting rod about one quarter-wavelength long. a mobile-phone manufacturer wants to build such an antenna into a gsm-900 (900 mhz) phone. how small can the phone be?

Question

21-10-2022
Physics

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the simplest design for a radio/microwave transmitter antenna is a vertical conducting rod about one quarter-wavelength long. a mobile-phone manufacturer wants to build such an antenna into a gsm-900 (900 mhz) phone. how small can the phone be?

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kjuli1766 kjuli1766 · Answer 1 · 2022-10-26T00:18:42-04:00

The phone can be 8.35cm small.

Frequency is the variety of occurrences of a repeating occasion in line with a unit of time. it is also from time to time referred to as temporal frequency to emphasize the assessment of spatial frequency, and regular frequency to emphasize the evaluation of angular frequency.

Frequency is an expression of ways regularly a periodic wave shape or signal repeats itself at a given amplitude. it is able to be expressed in hertz (Hz), kilohertz (kHz), megahertz (MHz), and so on.

Frequency is a vital parameter used in technological know-how and engineering to specify the temporal rate of trade discovered in oscillatory and periodic phenomena, such as mechanical vibrations, audio alerts (sound), radio waves, and mild.

GSM 900 band corresponds to a wavelength (\lambda) of

λ= c/f

where c is the speed of light and frequency is f which is 900 MHz

This gives \lambda=33.4cm

Antenna length L=\lambda/4=8.35cm

So the phone should at least be 8.35cm long.

Learn more about frequency here:-https://brainly.com/question/254161

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