Mobile TV Standard Antenna Mads Sager Antenna Technology Manager Commercial Products Division Template 2.2
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 Molex‟s Passive, Internal Mobile TV Standard Antenna (Series 47951)
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 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) Location-pin Nickel-over- recess Copper plated Hook traces (pin 2) Location-pin recess Antenna carrier Nickel-over- Copper plated Hook traces (pin 1) Figure 1. Design features of a Mobile TV Standard Antenna
Product Features (continued) Locating pins on the cover fit the recesses neatly Easy „plug -and- play‟ integration with „snap -in hook‟ interlocking system Snap-in hooks at the sides of the antenna snap into a matching set of apertures at the inner ends of the device cover Locating pins of the Locating pins of the device device cover lie cover fit snugly into the directly beneath each recesses of the antenna recess of the antenna mobile device cover Figure 2. Alignment and interlocking features of Figure 3. Easy integration of the Mobile TV the antenna and mobile device cover Antenna into a mobile device cover
Features and Benefits Simple 50-ohm passive Complete CMMB band coverage without the antenna interface 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 Hollowing-out of plastic material reduces the antenna’s radiation loss slots Vertical rib housing support Reduces antenna warpage during molding RoHS compliant and Environmental sustainability halogen-free
Markets and Applications Telecommunications – Mobile phones – Smartphones – Tablet PCs – Notebooks and netbooks Mobile phones and smart phones Other Markets – GPS navigation devices with CMMB functionality – Other CMMB-enabled devices Tablet PC CMMB-enabled device Notebook PC
Specifications Reference Information Electrical Packaging: Tray f_start (MHz): 470 Use With: CMMB receiver f_end (MHz): 800 Designed In: mm Return Loss S11 (dB): < -2 RoHS: Yes Total Efficiency at 470 MHz (dB): > -10 dB Halogen Free: Yes Glow Wire Compliant: No Total Efficiency at 800 MHz (dB): > -5.9 dB Polarization: Linear Input Impedance (Ohms): 50 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
RF Performance Return Loss Return Loss 0.00 -1.00 -2.00 Return Loss (dB) -3.00 -4.00 -5.00 Nominal Antenna on -6.00 Ref. PCB Spec -7.00 -8.00 400 500 600 700 800 900 Frequency (MHz) Figure 4: Return Loss (S11) measured on reference PCB with cover
RF Performance Efficiency Figure 5: Total Efficiency (including Mismatch Loss) measured on reference PCB with cover
RF Performance Radiation Plots – 635MHz 0 0 330 30 -5 -10 X 300 60 Z -15 X -20 50 mm 270 90 Y -25 Y 240 120 110 mm 210 150 180 Figure 6a: Antenna on reference PCB Figure 6b: Radiation diagram of X-Y plane with cover shows combined polarizations at 635 MHz
RF Performance Radiation Plots – 635MHz 0 0 0 0 330 30 330 30 -5 -5 -10 -10 300 60 300 60 -15 -15 Z X -20 -20 270 90 -25 270 90 -25 Y Z 240 120 240 120 210 150 210 150 180 180 Figure 6c: Radiation diagram of X-Z plane Figure 6d: Radiation diagram of Z-Y plane shows combined polarizations at 635 MHz shows combined polarizations at 635 MHz
Ordering Information Order No. Description 47951-0001 Mobile TV Antenna, 50.00mm (1.97") Length, 50 Ohms, Snap Mount
Recommend
More recommend
