Mobile TV Standard Antenna Mads Sager Antenna Technology Manager - - PowerPoint PPT Presentation

Mobile TV Standard Antenna

Mads Sager Antenna Technology Manager Commercial Products Division

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Molex‟s Passive, Internal Mobile TV Standard Antenna (Series 47951)

With built-in „plug-and-play‟ functionality, Molex‟s Mobile TV Standard Antenna integrates LDS technology to eliminate the need for external attachments or active CMMB control chips

Key Strengths of Mobile TV Antenna

The first of its kind offered by Molex – internal, passive Developed specially for the China Multimedia Mobile Broadcasting (CMMB) format “Plug-and-Play” integration without the need for: external whip antennas costly active circuitry, switches, tuning components or any complex interface to the mobile device receiver for active frequency tuning engineering resources to integrate tunable antenna with the CMMB receiver Integral snap-in hooks mounts antenna precisely and securely to mobile device cover Antenna is RoHS-compliant and halogen-free

Product Features

Figure 1. Design features of a Mobile TV Standard Antenna Nickel-over- Copper plated traces (pin 2) Location-pin recess Location-pin recess Antenna carrier Nickel-over- Copper plated traces (pin 1) Hook Hook

LDS-grade carrier (antenna housing) Nickel (Ni) over Copper (Cu) circuit traces Contact area (pin 1 and 2) connects to source and ground inductors of the matching network Antenna with integral location pin recesses and snap-in hooks (Fig. 1)

Product Features (continued)

Figure 2. Alignment and interlocking features of the antenna and mobile device cover Locating pins of the device cover lie directly beneath each recess of the antenna mobile device cover Figure 3. Easy integration of the Mobile TV Antenna into a mobile device cover Snap-in hooks at the sides

• f the antenna snap into a

matching set of apertures at the inner ends of the device cover Locating pins of the device cover fit snugly into the recesses of the antenna

Locating pins on the cover fit the recesses neatly Easy „plug-and-play‟ integration with „snap-in hook‟ interlocking system

Features and Benefits

Simple 50-ohm passive antenna interface Complete CMMB band coverage without the need for costly active circuitry, switches or controls Reduced engineering costs due to simple interface between antenna and CMMB receiver Internal antenna design Enhances mobile device appearance when integrated Eliminates concerns over durability and functionality of external antennas Specially-designed housing slots Hollowing-out of plastic material reduces the antenna’s radiation loss Vertical rib housing support Reduces antenna warpage during molding RoHS compliant and halogen-free Environmental sustainability

Markets and Applications

Telecommunications

– Mobile phones – Smartphones – Tablet PCs – Notebooks and netbooks

Other Markets

– GPS navigation devices with CMMB functionality – Other CMMB-enabled devices

Tablet PC Notebook PC CMMB-enabled device Mobile phones and smart phones

Specifications

Reference Information Packaging: Tray Use With: CMMB receiver Designed In: mm RoHS: Yes Halogen Free: Yes Glow Wire Compliant: No Physical Housing Material: LCP Vectra E8401 Contact: Two SMD contact springs Plating: Contact Area — Nickel (Ni) Underplating — Copper (Cu) Operating Temperature: -30 to +75°C Electrical f_start (MHz): 470 f_end (MHz): 800 Return Loss S11 (dB): < -2 Total Efficiency at 470 MHz (dB): > -10 dB Total Efficiency at 800 MHz (dB): > -5.9 dB Polarization: Linear Input Impedance (Ohms): 50

RF Performance

Figure 4: Return Loss (S11) measured on reference PCB with cover

• 8.00
• 7.00
• 6.00
• 5.00
• 4.00
• 3.00
• 2.00
• 1.00

0.00 400 500 600 700 800 900

Return Loss (dB) Frequency (MHz)

Return Loss

Nominal Antenna on

• Ref. PCB

Spec

Return Loss

Figure 5: Total Efficiency (including Mismatch Loss) measured on reference PCB with cover

Efficiency

RF Performance

• 25
• 20
• 15
• 10
• 5

30 60 90 120 150 180 210 240 270 300 330

X Y Figure 6b: Radiation diagram of X-Y plane shows combined polarizations at 635 MHz Z Y X

110 mm 50 mm

Radiation Plots – 635MHz

RF Performance

Figure 6a: Antenna on reference PCB with cover

• 25
• 20
• 15
• 10
• 5

30 60 90 120 150 180 210 240 270 300 330

• 25
• 20
• 15
• 10
• 5

30 60 90 120 150 180 210 240 270 300 330

Z Y X Z Figure 6c: Radiation diagram of X-Z plane shows combined polarizations at 635 MHz Figure 6d: Radiation diagram of Z-Y plane shows combined polarizations at 635 MHz

Radiation Plots – 635MHz

RF Performance

Ordering Information

Order No. Description 47951-0001 Mobile TV Antenna, 50.00mm (1.97") Length, 50 Ohms, Snap Mount