1. ANATOMY OF SMARTPHONE

2. d

3. The linear oscillating vibrator motor also known as linear resonant actuators have many
advantages over ERM (Eccentric rotating mass) vibrator motors:
 The can be used with an ac signal at various frequencies spread across its resonant
frequency, allowing various magnitudes of vibration.
 The resulting vibrations are not random as in ERM’s, but the LRA’s provide vibration in
single axis resulting in simple harmonic vibrations
 In ERM’s the motor brushes wear out, but the LRA’s have no direct moving contact parts
which provide durability
 LRA’s can be used to provide HAPTIC FEEDBACK
But however the size of LRA’s and the magnitude of vibrations produced is limited due to
magnetic actuation.
Link to understand how LRA’s work : https://vimeo.com/132533086

5. 8 megapixel rear-facing camera
and
1.3 megapixel front-facing camera
Standard 3.5 mm headphone jack.
It also houses the dual ambient
light sensors.
Proximity sensor or Ambient
light sensor is housed with
headphone jack
.
Probably, a WiFi antenna

6. All the parts of the phone of the smart-phone are shown together.
From left to right - 1) LCD screen along with digitizer
2) Smart-phone case
3) Motherboard, Daughter-Board and battery
4) Motherboard cover and speaker enclosure
5) Rear cover of the smart-phone
The various antennas present here are:
• Main Antenna
• Diversity antenna
• WiFi/BT antenna
• GPS antenna
• NFC antenna

7. The antenna over the speaker module is an inverted-F antenna, it is a type
of antenna used in wireless communication. It consists of a monopole
antenna running parallel to a ground plane and grounded at one end. The antenna is
fed from an intermediate point a distance from the grounded end.
The design has two advantages over a simple monopole
 The antenna is shorter and more compact,
 and the impedance matching can be controlled by the designer without the need
for extra matching components
Inverted F antennas are most commonly implemented as plannar inverted f antennas
(PIFA) , which is a type of microstrip antenna, but however various types of inverted F
antennas have evolved over time to provide multi-band support for communication in
mobile devices
Multi-band PIFA designs, A: nested PIFA patch antenna,
B: PIFA patch antenna with two spur lines producing a tri-
band antenna, C: a similar tri-band antenna with C-slots,
D: tightly meandered inverted-F

8. The diversity antenna, WiFi and bluetooth antenna and GPS antenna, highlighted in
the above image are all microstrip patch antennas.
A patch antenna is a narrowband, wide-beam antenna fabricated by etching the
antenna element pattern in metal trace bonded to an insulating dielectric substrate,
similar to a PCB, with a continuous metal layer bonded to the opposite side of the
substrate which forms a ground connection.

9. The advantages of the microstrip antennas are:
 Microstrip antennas are relatively inexpensive to manufacture and design because
of the simple 2-dimensional physical geometry.
 They are usually employed at UHF (300 MHz to 3 GHz)and higher frequencies
because the size of the antenna is directly tied to the wavelength at the resonant
frequency
 Patch arrays can provide much higher gains than a single patch at little additional
cost
The relative permitivity of substrate in the microstrip patch antenna varies from
2.2≤ ≤12. Lower the permittivity of dielectric material larger the size of the antennaƐ
but it achieves better efficiency and larger bandwidth.
The dielectric height( ) is the width of the substrateḫ
The relation between various parameters of the microstrip antenna is given as follows
:
By suitable assuming suitable values of permitivity of substrate and dieletric height
the resonant frequency of the WiFi/BT antenna can be extrapolated to be 2.4Ghz

10. The advantages of the microstrip antennas are:
 Microstrip antennas are relatively inexpensive to manufacture and design because
of the simple 2-dimensional physical geometry.
 They are usually employed at UHF (300 MHz to 3 GHz)and higher frequencies
because the size of the antenna is directly tied to the wavelength at the resonant
frequency
 Patch arrays can provide much higher gains than a single patch at little additional
cost
The relative permitivity of substrate in the microstrip patch antenna varies from
2.2≤ ≤12. Lower the permittivity of dielectric material larger the size of the antennaƐ
but it achieves better efficiency and larger bandwidth.
The dielectric height( ) is the width of the substrateḫ
The relation between various parameters of the microstrip antenna is given as follows
:
By suitable assuming suitable values of permitivity of substrate and dieletric height
the resonant frequency of the WiFi/BT antenna can be extrapolated to be 2.4Ghz