general characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 how to order? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 applica tion notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 3-1 vol. 1 sales offices: visit our web site at http://www.temex.net ceramic coaxial resonators contents ceramic coaxial resonators main features frequency: 300 mhz to 6 ghz size: 2 to 12 mm dielectric constant: 21, 37, 90 quarter wavelength or half wavelength with or without connection contents contents page spirit of new technology all speci?ations contained in that catalog are subject to change without notice.
3-2 vol. 1 sales offices: visit our web site at http://www.temex.net ceramic coaxial resonators general characteristics r = 90 dimensions and configurations the temex coaxial resonators are available over a frequency range of 300 mhz to 6 ghz with four preferred square cross section sizes, having side length of 2, 4, 6 and 12 mm. other square section dimensions 3, 8 and 10 mm (s) information can be obtained upon request. t able 1 summarizes the choice of sizes and dielectric materials available. the length of the component (l) can be determined from the chosen frequency (f) and dielectric constant ( r) as follows: o 4 r o 2 r 300 f r = 37 l = r = 21 l = 12.3 f 16.37 f impedance z the coaxial resonator impedance used in tem mode is a direct function of its dimensions and of the dielectric material permittivity. t able 2 indicates for each standard side length, and for each dielectric constant, the impedance value, independent of the resonator length a simpli?d formula for /4 applications: ( /4 application) ( /2 application) l = with o = l = l = 7. 9 f o in mm l in mm f in ghz general characteristics
section 2346812 (mm) l1 (mm) 0.5 0.8 0.8 1.5 1.5 2.0 l2 (mm) 1.0 1.2 1.3 1.7 2.0 2.5 e (mm) 0.5 0.5 0.5 0.5 0.7 1.0 3-3 vol. 1 sales offices: visit our web site at http://www.temex.net ceramic coaxial resonators general characteristics applications temex coaxial ceramic resonators provide the users with ?igh q?higher parallel resonant impedance and better temperature characteristics than inductor coils and associated lumped constant elements used in rf ampli?rs and oscillators circuits. these coaxial resonators are perfectly suitable for: ?dro/vco oscillators cordless telephone ?cellular telephone ?tuned oscillators ?uhf (lc) coupled ampli?rs narrow band ?ters ?global positioning systems (gps) ?duplexers section s 2.0 3.0 4.0 4.0 6.0 6.0 8.0 10.0 12.0 12.0 (mm) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 hole d 0.65 0.95 1.5 2.0 2.0 2.5 2.7 3.3 3.55 4.0 (mm) 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.2 0.2 0.5 temex ref. crs02 crs03 crs04 crs24 crs06 crs26 crs08 crs10 crs12 crs412 table 1: dimensions e l l1 l2 d s note: ( /4 application): all faces but (1) are metallized ( /2 application): all faces but (1) and (2) are metallized table 2: impedance temex ref. r =21 r = 37 r = 90 crs02 16.5 12.5 8.0 crs03 16.0 12.0 7.5 crs04 14.0 10.5 6.5 crs24 10.0 7.5 5.0 crs06 15.5 11.5 7.5 crs26 12.5 9.5 6.0 crs08 15.0 11.5 7.0 crs10 15.5 11.5 7.5 crs12 17.0 12.5 8.0 crs412 15.5 11.5 7.5 table 3: general characteristics cross section square standard s = 2, 3, 4, 6, 8, 12 mm dielectric constant r 21 2 37 1 90 2 temperature coefficient 21: 5 5 ppm of the dielectric f 37: 0 3 ppm (standard values) 90: 0 10 ppm resonant freq. range fo s ee tables standard: 1 % (f) frequency tolerance 0.5 % (d) and other on request quality factor q s ee curves impedance z see table 2 metallization standard: silver
3-4 vol. 1 sales offices: visit our web site at http://www.temex.net ceramic coaxial resonators how to order? for special request, please consult your local sales office. cr s 06 t q 1500 f s 1 e coaxial shape size material application resonant frequency metallization connection tape resonator s: square in n: r = 90 q: / 4 frequency tolerance s: silver 1: one & mm t: r = 37 h: / 2 (mhz) f = 1 % 0: none reel v: r = 21 d = 0.5 % x: special 5 = 5 mhz 1 = 1 mhz 2 mm 3 mm 4 mm 6 mm 12 mm 21 2000 - 4000 1500 - 4000 1000 - 4000 600 - 2500 600 - 1250 37 1500 - 3000 1500 - 3000 800 - 3000 500 - 2000 450 - 1000 90 900 - 2000 650 - 2000 450 - 2000 450 - 1000 300 - 650 table 4: standard frequency range /4 in mhz how to order?
3-5 vol. 1 sales offices: visit our web site at http://www.temex.net ceramic coaxial resonators application notes soldering recommendations before any soldering operation is implemented, the coaxial resonator must be preheated in order to avoid a thermal shock and a subsequent mechanical stress liable to initiate failure mechanism. temex recommends a minimum preheating time of 2 minutes at 120 c with a maximum heating rate of 2 c / sec. frequency adjustment when the frequency tuning adjustment is needed, two solutions can be adopted: a) mechanical lapping of the ceramic, or mechanical grinding of metallization, depending where metallization will be grinded off. b) using a temex air or sapphire dielectric tuning capacitor ( air trimmer ?or gig atrim ?: in this case, the frequency will decrease when capacitance will increase. this provides an additional advantage of mounting / terminating resonator to the assembly by utilizing the leg con?uration of the tuning capacitor. quality factor q the q factor of a coaxial resonator is essentially determined by the metallization. the dielectric material, having low losses, does not have a direct effect on the ??(secondary in?ence). the curves show the range of ??factor versus resonator size and frequency range. curves show that q min. increases as frequency increases (proportionally to fo ). application notes
3-6 vol. 1 sales offices: visit our web site at http://www.temex.net ceramic coaxial resonators application notes dielectric constant = 21 q factor frequency (mhz) 2 500 2 000 1 500 1 000 500 0 0 500 1 000 1 500 2 000 2 500 3 000 12x12 6x6 4x4 2x2 3x3 dielectric constant = 37 1 800 1 600 1 400 1 200 1 000 800 600 400 200 0 0 500 1 000 1 500 2 000 2 500 3 000 frequency (mhz) 12x12 6x6 4x4 3x3 2x2 q factor dielectric constant = 90 frequency (mhz) 0 500 1 000 1 500 2 000 2 500 3 000 1 600 1 400 1 200 1 000 800 600 400 200 0 12x12 6x6 4x4 3x3 2x2 q factor
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