Why did cell phones used to have external antennas? Why are they no longer needed?
It has a lot to do with the carrier frequency between the towers and your phone. The antenna size is pretty much related to the frequency of the carrier wave that transmits the information. Old phones used stuff close to 900 mhz, systems now a'days use frequencies closer to 1900 mhz which allows …
The Short Answer
It has a lot to do with the carrier frequency between the towers and your phone. The antenna size is pretty much related to the frequency of the carrier wave that transmits the information. Old phones used stuff close to 900 mhz, systems now a'days use frequencies closer to 1900 mhz which allows for smaller antenna to be used. Changes in antenna design have also impacted their size. Old phones used simple linear dipole antenna designs (as far as I know), now a'days more complex designs are used which allow for the same intensity of signal while taking up less linear space.
Analysis
Key Concepts: Antenna, used, carrier
This explanation focuses on antenna, used, carrier and spans 100 words across 5 sentences. At 39% above the average Biology explanation (72 words), this is one of the more thorough answers in this category, reflecting the complexity of the underlying question.
What This Answer Covers
The explanation opens with: “It has a lot to do with the carrier frequency between the towers and your phone.” It then elaboratesultimately building toward a complete picture across 5 connected points.
How This Compares in Biology
Ranked #128 of 500 Biology questions by answer depth (top 26%). This falls in the detailed tier — above average depth. The explanation goes beyond surface-level but keeps things accessible.
Frequently Asked Questions
Is there a simple explanation for why cell phones used to have external antennas? why are they no longer needed?
It has a lot to do with the carrier frequency between the towers and your phone. The antenna size is pretty much related to the frequency of the carrier wave that transmits the information. Old phones used stuff close to 900 mhz, systems now a'days…
How detailed is this explanation compared to similar Biology questions?
This is an above-average answer at 100 words, ranked #128 of 500 Biology questions by depth. The key concepts covered are antenna, used, carrier.
What approach does this answer take to explain cell phones used to have external antennas? why are they no ?
The explanation uses direct explanation across 100 words. It is categorized under Biology and addresses the question through 1 analytical lens.